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 #ifdef ENABLE_LE_CENTRAL 213 // called from test/ble_client/advertising_data_parser.c 214 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 215 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 216 static void hci_whitelist_free(void); 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 handle_command_complete_event(packet, size); 2870 break; 2871 2872 case HCI_EVENT_COMMAND_STATUS: 2873 // get num cmd packets - limit to 1 to reduce complexity 2874 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2875 2876 // check command status to detected failed outgoing connections 2877 create_connection_cmd = 0; 2878 #ifdef ENABLE_CLASSIC 2879 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_create_connection)){ 2880 create_connection_cmd = 1; 2881 } 2882 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_accept_synchronous_connection)){ 2883 create_connection_cmd = 1; 2884 } 2885 #endif 2886 #ifdef ENABLE_LE_CENTRAL 2887 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_create_connection)){ 2888 create_connection_cmd = 1; 2889 } 2890 #endif 2891 if (create_connection_cmd) { 2892 uint8_t status = hci_event_command_status_get_status(packet); 2893 addr_type = hci_stack->outgoing_addr_type; 2894 conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2895 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); 2896 2897 // reset outgoing address info 2898 memset(hci_stack->outgoing_addr, 0, 6); 2899 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2900 2901 // on error 2902 if (status != ERROR_CODE_SUCCESS){ 2903 #ifdef ENABLE_LE_CENTRAL 2904 if (hci_is_le_connection_type(addr_type)){ 2905 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2906 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2907 } 2908 #endif 2909 // error => outgoing connection failed 2910 if (conn != NULL){ 2911 hci_handle_connection_failed(conn, status); 2912 } 2913 } 2914 } 2915 2916 #ifdef ENABLE_CLASSIC 2917 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_inquiry)){ 2918 uint8_t status = hci_event_command_status_get_status(packet); 2919 log_info("command status (inquiry), status %x", status); 2920 if (status == ERROR_CODE_SUCCESS) { 2921 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2922 } else { 2923 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2924 } 2925 } 2926 if (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_periodic_inquiry_mode)) { 2927 uint8_t status = hci_event_command_status_get_status(packet); 2928 log_info("command status (inquiry), status %x", status); 2929 if (status == ERROR_CODE_SUCCESS) { 2930 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2931 } else { 2932 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2933 } 2934 } 2935 #endif 2936 break; 2937 2938 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 2939 if (size < 3) return; 2940 uint16_t num_handles = packet[2]; 2941 if (size != (3u + num_handles * 4u)) return; 2942 uint16_t offset = 3; 2943 for (i=0; i<num_handles;i++){ 2944 handle = little_endian_read_16(packet, offset) & 0x0fffu; 2945 offset += 2u; 2946 uint16_t num_packets = little_endian_read_16(packet, offset); 2947 offset += 2u; 2948 2949 conn = hci_connection_for_handle(handle); 2950 if (!conn){ 2951 log_error("hci_number_completed_packet lists unused con handle %u", handle); 2952 continue; 2953 } 2954 2955 if (conn->num_packets_sent >= num_packets){ 2956 conn->num_packets_sent -= num_packets; 2957 } else { 2958 log_error("hci_number_completed_packets, more packet slots freed then sent."); 2959 conn->num_packets_sent = 0; 2960 } 2961 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 2962 2963 #ifdef ENABLE_CLASSIC 2964 // For SCO, we do the can_send_now_check here 2965 hci_notify_if_sco_can_send_now(); 2966 #endif 2967 } 2968 break; 2969 } 2970 2971 #ifdef ENABLE_CLASSIC 2972 case HCI_EVENT_FLUSH_OCCURRED: 2973 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 2974 handle = hci_event_flush_occurred_get_handle(packet); 2975 conn = hci_connection_for_handle(handle); 2976 if (conn) { 2977 log_info("Flush occurred, disconnect 0x%04x", handle); 2978 conn->state = SEND_DISCONNECT; 2979 } 2980 break; 2981 2982 case HCI_EVENT_INQUIRY_COMPLETE: 2983 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 2984 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2985 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2986 hci_emit_event(event, sizeof(event), 1); 2987 } 2988 break; 2989 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 2990 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 2991 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 2992 } 2993 break; 2994 case HCI_EVENT_CONNECTION_REQUEST: 2995 reverse_bd_addr(&packet[2], addr); 2996 link_type = (hci_link_type_t) packet[11]; 2997 2998 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 2999 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3000 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3001 bd_addr_copy(hci_stack->decline_addr, addr); 3002 break; 3003 } 3004 3005 if (hci_stack->gap_classic_accept_callback != NULL){ 3006 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3007 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3008 bd_addr_copy(hci_stack->decline_addr, addr); 3009 break; 3010 } 3011 } 3012 3013 // TODO: eval COD 8-10 3014 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3015 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3016 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3017 if (!conn) { 3018 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3019 } 3020 if (!conn) { 3021 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3022 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3023 bd_addr_copy(hci_stack->decline_addr, addr); 3024 hci_run(); 3025 // avoid event to higher layer 3026 return; 3027 } 3028 conn->role = HCI_ROLE_SLAVE; 3029 conn->state = RECEIVED_CONNECTION_REQUEST; 3030 // store info about eSCO 3031 if (link_type == HCI_LINK_TYPE_ESCO){ 3032 conn->remote_supported_features[0] |= 1; 3033 } 3034 hci_run(); 3035 break; 3036 3037 case HCI_EVENT_CONNECTION_COMPLETE: 3038 // Connection management 3039 reverse_bd_addr(&packet[5], addr); 3040 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3041 addr_type = BD_ADDR_TYPE_ACL; 3042 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3043 if (conn) { 3044 if (!packet[2]){ 3045 conn->state = OPEN; 3046 conn->con_handle = little_endian_read_16(packet, 3); 3047 3048 // trigger write supervision timeout if we're master 3049 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3050 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3051 } 3052 3053 // trigger write automatic flush timeout 3054 if (hci_stack->automatic_flush_timeout != 0){ 3055 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3056 } 3057 3058 // restart timer 3059 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3060 btstack_run_loop_add_timer(&conn->timeout); 3061 3062 // trigger remote features for dedicated bonding 3063 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3064 hci_trigger_remote_features_for_connection(conn); 3065 } 3066 3067 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3068 3069 hci_emit_nr_connections_changed(); 3070 } else { 3071 // connection failed 3072 hci_handle_connection_failed(conn, packet[2]); 3073 } 3074 } 3075 break; 3076 3077 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3078 reverse_bd_addr(&packet[5], addr); 3079 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3080 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3081 if (packet[2]){ 3082 // connection failed 3083 if (conn){ 3084 hci_handle_connection_failed(conn, packet[2]); 3085 } 3086 break; 3087 } 3088 if (!conn) { 3089 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3090 } 3091 if (!conn) { 3092 break; 3093 } 3094 conn->state = OPEN; 3095 conn->con_handle = little_endian_read_16(packet, 3); 3096 3097 #ifdef ENABLE_SCO_OVER_HCI 3098 // update SCO 3099 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3100 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3101 } 3102 // trigger can send now 3103 if (hci_have_usb_transport()){ 3104 hci_stack->sco_can_send_now = true; 3105 } 3106 #endif 3107 #ifdef HAVE_SCO_TRANSPORT 3108 // configure sco transport 3109 if (hci_stack->sco_transport != NULL){ 3110 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3111 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3112 } 3113 #endif 3114 break; 3115 3116 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3117 handle = little_endian_read_16(packet, 3); 3118 conn = hci_connection_for_handle(handle); 3119 if (!conn) break; 3120 if (!packet[2]){ 3121 const uint8_t * features = &packet[5]; 3122 hci_handle_remote_features_page_0(conn, features); 3123 3124 // read extended features if possible 3125 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3126 && ((conn->remote_supported_features[0] & 2) != 0)) { 3127 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3128 break; 3129 } 3130 } 3131 hci_handle_remote_features_received(conn); 3132 break; 3133 3134 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3135 handle = little_endian_read_16(packet, 3); 3136 conn = hci_connection_for_handle(handle); 3137 if (!conn) break; 3138 // status = ok, page = 1 3139 if (!packet[2]) { 3140 uint8_t page_number = packet[5]; 3141 uint8_t maximum_page_number = packet[6]; 3142 const uint8_t * features = &packet[7]; 3143 bool done = false; 3144 switch (page_number){ 3145 case 1: 3146 hci_handle_remote_features_page_1(conn, features); 3147 if (maximum_page_number >= 2){ 3148 // get Secure Connections (Controller) from Page 2 if available 3149 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3150 } else { 3151 // otherwise, assume SC (Controller) == SC (Host) 3152 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3153 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3154 } 3155 done = true; 3156 } 3157 break; 3158 case 2: 3159 hci_handle_remote_features_page_2(conn, features); 3160 done = true; 3161 break; 3162 default: 3163 break; 3164 } 3165 if (!done) break; 3166 } 3167 hci_handle_remote_features_received(conn); 3168 break; 3169 3170 case HCI_EVENT_LINK_KEY_REQUEST: 3171 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3172 hci_event_link_key_request_get_bd_addr(packet, addr); 3173 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3174 if (!conn) break; 3175 3176 // lookup link key in db if not cached 3177 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3178 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3179 } 3180 3181 // response sent by hci_run() 3182 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3183 #endif 3184 break; 3185 3186 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3187 hci_event_link_key_request_get_bd_addr(packet, addr); 3188 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3189 if (!conn) break; 3190 3191 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3192 3193 // CVE-2020-26555: ignore NULL link key 3194 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3195 if (btstack_is_null(&packet[8], 16)) break; 3196 3197 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3198 // Change Connection Encryption keeps link key type 3199 if (link_key_type != CHANGED_COMBINATION_KEY){ 3200 conn->link_key_type = link_key_type; 3201 } 3202 3203 // cache link key. link keys stored in little-endian format for legacy reasons 3204 memcpy(&conn->link_key, &packet[8], 16); 3205 3206 // only store link key: 3207 // - if bondable enabled 3208 if (hci_stack->bondable == false) break; 3209 // - if security level sufficient 3210 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3211 // - for SSP, also check if remote side requested bonding as well 3212 if (conn->link_key_type != COMBINATION_KEY){ 3213 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3214 if (!remote_bonding){ 3215 break; 3216 } 3217 } 3218 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3219 break; 3220 } 3221 3222 case HCI_EVENT_PIN_CODE_REQUEST: 3223 hci_event_pin_code_request_get_bd_addr(packet, addr); 3224 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3225 if (!conn) break; 3226 3227 hci_pairing_started(conn, false); 3228 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3229 if (!hci_stack->bondable ){ 3230 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3231 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3232 hci_run(); 3233 return; 3234 } 3235 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3236 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3237 log_info("Level 4 required, but SC not supported -> abort"); 3238 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3239 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3240 hci_run(); 3241 return; 3242 } 3243 break; 3244 3245 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3246 hci_event_io_capability_response_get_bd_addr(packet, addr); 3247 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3248 if (!conn) break; 3249 3250 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3251 hci_pairing_started(conn, true); 3252 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3253 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3254 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3255 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3256 #endif 3257 break; 3258 3259 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3260 hci_event_io_capability_response_get_bd_addr(packet, addr); 3261 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3262 if (!conn) break; 3263 3264 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3265 hci_connection_timestamp(conn); 3266 hci_pairing_started(conn, true); 3267 break; 3268 3269 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3270 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3271 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3272 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3273 if (!conn) break; 3274 3275 hci_connection_timestamp(conn); 3276 3277 hci_pairing_started(conn, true); 3278 3279 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3280 break; 3281 #endif 3282 3283 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3284 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3285 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3286 if (!conn) break; 3287 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3288 if (hci_stack->ssp_auto_accept){ 3289 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3290 }; 3291 } else { 3292 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3293 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3294 // don't forward event to app 3295 hci_run(); 3296 return; 3297 } 3298 break; 3299 3300 case HCI_EVENT_USER_PASSKEY_REQUEST: 3301 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3302 if (hci_stack->ssp_auto_accept){ 3303 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3304 }; 3305 break; 3306 3307 case HCI_EVENT_MODE_CHANGE: 3308 handle = hci_event_mode_change_get_handle(packet); 3309 conn = hci_connection_for_handle(handle); 3310 if (!conn) break; 3311 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3312 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3313 break; 3314 #endif 3315 3316 case HCI_EVENT_ENCRYPTION_CHANGE: 3317 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3318 handle = hci_event_encryption_change_get_connection_handle(packet); 3319 conn = hci_connection_for_handle(handle); 3320 if (!conn) break; 3321 if (hci_event_encryption_change_get_status(packet) == 0u) { 3322 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3323 if (encryption_enabled){ 3324 if (hci_is_le_connection(conn)){ 3325 // For LE, we accept connection as encrypted 3326 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3327 } 3328 #ifdef ENABLE_CLASSIC 3329 else { 3330 3331 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3332 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3333 bool connected_uses_aes_ccm = encryption_enabled == 2; 3334 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3335 log_info("SC during pairing, but only E0 now -> abort"); 3336 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3337 break; 3338 } 3339 3340 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3341 if (connected_uses_aes_ccm){ 3342 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3343 } 3344 3345 #ifdef ENABLE_TESTING_SUPPORT 3346 // work around for issue with PTS dongle 3347 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3348 #endif 3349 // validate encryption key size 3350 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3351 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3352 // already got encryption key size 3353 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3354 } else { 3355 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3356 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3357 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3358 } else { 3359 // if not, pretend everything is perfect 3360 hci_handle_read_encryption_key_size_complete(conn, 16); 3361 } 3362 } 3363 } 3364 #endif 3365 } else { 3366 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3367 } 3368 } else { 3369 uint8_t status = hci_event_encryption_change_get_status(packet); 3370 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3371 conn->bonding_flags &= ~BONDING_DEDICATED; 3372 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3373 conn->bonding_status = status; 3374 } 3375 } 3376 3377 break; 3378 3379 #ifdef ENABLE_CLASSIC 3380 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3381 handle = hci_event_authentication_complete_get_connection_handle(packet); 3382 conn = hci_connection_for_handle(handle); 3383 if (!conn) break; 3384 3385 // clear authentication active flag 3386 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3387 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3388 3389 // authenticated only if auth status == 0 3390 if (hci_event_authentication_complete_get_status(packet) == 0){ 3391 // authenticated 3392 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3393 3394 // If not already encrypted, start encryption 3395 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3396 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3397 break; 3398 } 3399 } 3400 3401 // emit updated security level 3402 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3403 break; 3404 3405 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3406 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3407 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3408 if (!conn) break; 3409 3410 // treat successfully paired connection as authenticated 3411 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3412 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3413 } 3414 3415 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3416 break; 3417 #endif 3418 3419 // HCI_EVENT_DISCONNECTION_COMPLETE 3420 // has been split, to first notify stack before shutting connection down 3421 // see end of function, too. 3422 case HCI_EVENT_DISCONNECTION_COMPLETE: 3423 if (packet[2]) break; // status != 0 3424 handle = little_endian_read_16(packet, 3); 3425 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3426 if (hci_stack->acl_fragmentation_total_size > 0u) { 3427 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3428 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3429 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3430 hci_stack->acl_fragmentation_total_size = 0; 3431 hci_stack->acl_fragmentation_pos = 0; 3432 if (release_buffer){ 3433 hci_release_packet_buffer(); 3434 } 3435 } 3436 } 3437 3438 conn = hci_connection_for_handle(handle); 3439 if (!conn) break; 3440 #ifdef ENABLE_CLASSIC 3441 // pairing failed if it was ongoing 3442 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3443 #endif 3444 3445 // emit dedicatd bonding event 3446 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3447 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3448 } 3449 3450 // mark connection for shutdown, stop timers, reset state 3451 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3452 hci_connection_stop_timer(conn); 3453 hci_connection_init(conn); 3454 3455 #ifdef ENABLE_BLE 3456 #ifdef ENABLE_LE_PERIPHERAL 3457 // re-enable advertisements for le connections if active 3458 if (hci_is_le_connection(conn)){ 3459 hci_update_advertisements_enabled_for_current_roles(); 3460 } 3461 #endif 3462 #endif 3463 break; 3464 3465 case HCI_EVENT_HARDWARE_ERROR: 3466 log_error("Hardware Error: 0x%02x", packet[2]); 3467 if (hci_stack->hardware_error_callback){ 3468 (*hci_stack->hardware_error_callback)(packet[2]); 3469 } else { 3470 // if no special requests, just reboot stack 3471 hci_power_control_off(); 3472 hci_power_control_on(); 3473 } 3474 break; 3475 3476 #ifdef ENABLE_CLASSIC 3477 case HCI_EVENT_ROLE_CHANGE: 3478 if (packet[2]) break; // status != 0 3479 reverse_bd_addr(&packet[3], addr); 3480 addr_type = BD_ADDR_TYPE_ACL; 3481 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3482 if (!conn) break; 3483 conn->role = packet[9]; 3484 break; 3485 #endif 3486 3487 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3488 // release packet buffer only for asynchronous transport and if there are not further fragements 3489 if (hci_transport_synchronous()) { 3490 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3491 return; // instead of break: to avoid re-entering hci_run() 3492 } 3493 hci_stack->acl_fragmentation_tx_active = 0; 3494 if (hci_stack->acl_fragmentation_total_size) break; 3495 hci_release_packet_buffer(); 3496 3497 // L2CAP receives this event via the hci_emit_event below 3498 3499 #ifdef ENABLE_CLASSIC 3500 // For SCO, we do the can_send_now_check here 3501 hci_notify_if_sco_can_send_now(); 3502 #endif 3503 break; 3504 3505 #ifdef ENABLE_CLASSIC 3506 case HCI_EVENT_SCO_CAN_SEND_NOW: 3507 // For SCO, we do the can_send_now_check here 3508 hci_stack->sco_can_send_now = true; 3509 hci_notify_if_sco_can_send_now(); 3510 return; 3511 3512 // explode inquriy results for easier consumption 3513 case HCI_EVENT_INQUIRY_RESULT: 3514 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3515 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3516 gap_inquiry_explode(packet, size); 3517 break; 3518 #endif 3519 3520 #ifdef ENABLE_BLE 3521 case HCI_EVENT_LE_META: 3522 switch (packet[2]){ 3523 #ifdef ENABLE_LE_CENTRAL 3524 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3525 if (!hci_stack->le_scanning_enabled) break; 3526 le_handle_advertisement_report(packet, size); 3527 break; 3528 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3529 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3530 if (!hci_stack->le_scanning_enabled) break; 3531 le_handle_extended_advertisement_report(packet, size); 3532 break; 3533 #endif 3534 #endif 3535 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3536 event_handle_le_connection_complete(packet); 3537 break; 3538 3539 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3540 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3541 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3542 conn = hci_connection_for_handle(handle); 3543 if (!conn) break; 3544 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3545 break; 3546 3547 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3548 // connection 3549 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3550 conn = hci_connection_for_handle(handle); 3551 if (conn) { 3552 // read arguments 3553 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3554 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3555 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3556 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3557 3558 // validate against current connection parameter range 3559 le_connection_parameter_range_t existing_range; 3560 gap_get_connection_parameter_range(&existing_range); 3561 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3562 if (update_parameter){ 3563 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3564 conn->le_conn_interval_min = le_conn_interval_min; 3565 conn->le_conn_interval_max = le_conn_interval_max; 3566 conn->le_conn_latency = le_conn_latency; 3567 conn->le_supervision_timeout = le_supervision_timeout; 3568 } else { 3569 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3570 } 3571 } 3572 break; 3573 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3574 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3575 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3576 conn = hci_connection_for_handle(handle); 3577 if (conn) { 3578 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3579 } 3580 break; 3581 #endif 3582 default: 3583 break; 3584 } 3585 break; 3586 #endif 3587 case HCI_EVENT_VENDOR_SPECIFIC: 3588 // Vendor specific commands often create vendor specific event instead of num completed packets 3589 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3590 switch (hci_stack->manufacturer){ 3591 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3592 hci_stack->num_cmd_packets = 1; 3593 break; 3594 default: 3595 break; 3596 } 3597 break; 3598 default: 3599 break; 3600 } 3601 3602 handle_event_for_current_stack_state(packet, size); 3603 3604 // notify upper stack 3605 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3606 3607 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3608 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3609 handle = little_endian_read_16(packet, 3); 3610 hci_connection_t * aConn = hci_connection_for_handle(handle); 3611 // discard connection if app did not trigger a reconnect in the event handler 3612 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3613 hci_shutdown_connection(aConn); 3614 } 3615 } 3616 3617 // execute main loop 3618 hci_run(); 3619 } 3620 3621 #ifdef ENABLE_CLASSIC 3622 3623 #ifdef ENABLE_SCO_OVER_HCI 3624 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3625 static void sco_schedule_tx(hci_connection_t * conn); 3626 3627 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3628 log_debug("SCO TX Timeout"); 3629 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3630 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3631 if (!conn) return; 3632 3633 // trigger send 3634 conn->sco_tx_ready = 1; 3635 // extra packet if CVSD but SCO buffer is too short 3636 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3637 conn->sco_tx_ready++; 3638 } 3639 hci_notify_if_sco_can_send_now(); 3640 } 3641 3642 3643 #define SCO_TX_AFTER_RX_MS (6) 3644 3645 static void sco_schedule_tx(hci_connection_t * conn){ 3646 3647 uint32_t now = btstack_run_loop_get_time_ms(); 3648 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 3649 int time_delta_ms = sco_tx_ms - now; 3650 3651 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 3652 3653 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 3654 btstack_run_loop_remove_timer(timer); 3655 btstack_run_loop_set_timer(timer, time_delta_ms); 3656 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 3657 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 3658 btstack_run_loop_add_timer(timer); 3659 } 3660 #endif 3661 3662 static void sco_handler(uint8_t * packet, uint16_t size){ 3663 // lookup connection struct 3664 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 3665 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3666 if (!conn) return; 3667 3668 #ifdef ENABLE_SCO_OVER_HCI 3669 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 3670 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 3671 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 3672 packet[2] = 0x3c; 3673 memmove(&packet[3], &packet[23], 63); 3674 size = 63; 3675 } 3676 } 3677 3678 if (hci_have_usb_transport()){ 3679 // Nothing to do 3680 } else { 3681 // 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); 3682 if (hci_stack->synchronous_flow_control_enabled == 0){ 3683 uint32_t now = btstack_run_loop_get_time_ms(); 3684 3685 if (!conn->sco_rx_valid){ 3686 // ignore first 10 packets 3687 conn->sco_rx_count++; 3688 // log_debug("sco rx count %u", conn->sco_rx_count); 3689 if (conn->sco_rx_count == 10) { 3690 // use first timestamp as is and pretent it just started 3691 conn->sco_rx_ms = now; 3692 conn->sco_rx_valid = 1; 3693 conn->sco_rx_count = 0; 3694 sco_schedule_tx(conn); 3695 } 3696 } else { 3697 // track expected arrival timme 3698 conn->sco_rx_count++; 3699 conn->sco_rx_ms += 7; 3700 int delta = (int32_t) (now - conn->sco_rx_ms); 3701 if (delta > 0){ 3702 conn->sco_rx_ms++; 3703 } 3704 // log_debug("sco rx %u", conn->sco_rx_ms); 3705 sco_schedule_tx(conn); 3706 } 3707 } 3708 } 3709 #endif 3710 3711 // deliver to app 3712 if (hci_stack->sco_packet_handler) { 3713 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 3714 } 3715 3716 #ifdef HAVE_SCO_TRANSPORT 3717 // We can send one packet for each received packet 3718 conn->sco_tx_ready++; 3719 hci_notify_if_sco_can_send_now(); 3720 #endif 3721 3722 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 3723 conn->num_packets_completed++; 3724 hci_stack->host_completed_packets = 1; 3725 hci_run(); 3726 #endif 3727 } 3728 #endif 3729 3730 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 3731 hci_dump_packet(packet_type, 1, packet, size); 3732 switch (packet_type) { 3733 case HCI_EVENT_PACKET: 3734 event_handler(packet, size); 3735 break; 3736 case HCI_ACL_DATA_PACKET: 3737 acl_handler(packet, size); 3738 break; 3739 #ifdef ENABLE_CLASSIC 3740 case HCI_SCO_DATA_PACKET: 3741 sco_handler(packet, size); 3742 break; 3743 #endif 3744 #ifdef ENABLE_BLE 3745 case HCI_ISO_DATA_PACKET: 3746 if (hci_stack->iso_packet_handler != NULL){ 3747 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 3748 } 3749 break; 3750 #endif 3751 default: 3752 break; 3753 } 3754 } 3755 3756 /** 3757 * @brief Add event packet handler. 3758 */ 3759 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3760 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3761 } 3762 3763 /** 3764 * @brief Remove event packet handler. 3765 */ 3766 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3767 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3768 } 3769 3770 /** Register HCI packet handlers */ 3771 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 3772 hci_stack->acl_packet_handler = handler; 3773 } 3774 3775 #ifdef ENABLE_CLASSIC 3776 /** 3777 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 3778 */ 3779 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 3780 hci_stack->sco_packet_handler = handler; 3781 } 3782 #endif 3783 3784 #ifdef ENABLE_BLE 3785 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 3786 hci_stack->iso_packet_handler = handler; 3787 } 3788 #endif 3789 3790 static void hci_state_reset(void){ 3791 // no connections yet 3792 hci_stack->connections = NULL; 3793 3794 // keep discoverable/connectable as this has been requested by the client(s) 3795 // hci_stack->discoverable = 0; 3796 // hci_stack->connectable = 0; 3797 // hci_stack->bondable = 1; 3798 // hci_stack->own_addr_type = 0; 3799 3800 // buffer is free 3801 hci_stack->hci_packet_buffer_reserved = false; 3802 3803 // no pending cmds 3804 hci_stack->decline_reason = 0; 3805 3806 hci_stack->secure_connections_active = false; 3807 3808 #ifdef ENABLE_CLASSIC 3809 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 3810 hci_stack->page_timeout = 0x6000; // ca. 15 sec 3811 3812 hci_stack->gap_tasks_classic = 3813 GAP_TASK_SET_DEFAULT_LINK_POLICY | 3814 GAP_TASK_SET_CLASS_OF_DEVICE | 3815 GAP_TASK_SET_LOCAL_NAME | 3816 GAP_TASK_SET_EIR_DATA | 3817 GAP_TASK_WRITE_SCAN_ENABLE | 3818 GAP_TASK_WRITE_PAGE_TIMEOUT; 3819 #endif 3820 3821 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3822 hci_stack->classic_read_local_oob_data = false; 3823 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3824 #endif 3825 3826 // LE 3827 #ifdef ENABLE_BLE 3828 memset(hci_stack->le_random_address, 0, 6); 3829 hci_stack->le_random_address_set = 0; 3830 #endif 3831 #ifdef ENABLE_LE_CENTRAL 3832 hci_stack->le_scanning_active = false; 3833 hci_stack->le_scanning_param_update = true; 3834 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3835 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3836 hci_stack->le_whitelist_capacity = 0; 3837 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3838 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 3839 #endif 3840 #endif 3841 #ifdef ENABLE_LE_PERIPHERAL 3842 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3843 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 3844 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 3845 } 3846 if (hci_stack->le_advertisements_data != NULL){ 3847 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 3848 } 3849 #endif 3850 } 3851 3852 #ifdef ENABLE_CLASSIC 3853 /** 3854 * @brief Configure Bluetooth hardware control. Has to be called before power on. 3855 */ 3856 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 3857 // store and open remote device db 3858 hci_stack->link_key_db = link_key_db; 3859 if (hci_stack->link_key_db) { 3860 hci_stack->link_key_db->open(); 3861 } 3862 } 3863 #endif 3864 3865 void hci_init(const hci_transport_t *transport, const void *config){ 3866 3867 #ifdef HAVE_MALLOC 3868 if (!hci_stack) { 3869 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 3870 } 3871 #else 3872 hci_stack = &hci_stack_static; 3873 #endif 3874 memset(hci_stack, 0, sizeof(hci_stack_t)); 3875 3876 // reference to use transport layer implementation 3877 hci_stack->hci_transport = transport; 3878 3879 // reference to used config 3880 hci_stack->config = config; 3881 3882 // setup pointer for outgoing packet buffer 3883 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 3884 3885 // max acl payload size defined in config.h 3886 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 3887 3888 // register packet handlers with transport 3889 transport->register_packet_handler(&packet_handler); 3890 3891 hci_stack->state = HCI_STATE_OFF; 3892 3893 // class of device 3894 hci_stack->class_of_device = 0x007a020c; // Smartphone 3895 3896 // bondable by default 3897 hci_stack->bondable = 1; 3898 3899 #ifdef ENABLE_CLASSIC 3900 // classic name 3901 hci_stack->local_name = default_classic_name; 3902 3903 // Master slave policy 3904 hci_stack->master_slave_policy = 1; 3905 3906 // Allow Role Switch 3907 hci_stack->allow_role_switch = 1; 3908 3909 // Default / minimum security level = 2 3910 hci_stack->gap_security_level = LEVEL_2; 3911 3912 // Default Security Mode 4 3913 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 3914 3915 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 3916 hci_stack->gap_required_encyrption_key_size = 7; 3917 3918 // Link Supervision Timeout 3919 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 3920 3921 #endif 3922 3923 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 3924 hci_stack->ssp_enable = 1; 3925 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 3926 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 3927 hci_stack->ssp_auto_accept = 1; 3928 3929 // Secure Connections: enable (requires support from Controller) 3930 hci_stack->secure_connections_enable = true; 3931 3932 // voice setting - signed 16 bit pcm data with CVSD over the air 3933 hci_stack->sco_voice_setting = 0x60; 3934 3935 #ifdef ENABLE_LE_CENTRAL 3936 // connection parameter to use for outgoing connections 3937 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 3938 hci_stack->le_connection_scan_window = 0x0030; // 30ms 3939 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 3940 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 3941 hci_stack->le_connection_latency = 4; // 4 3942 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 3943 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 3944 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 3945 3946 // default LE Scanning 3947 hci_stack->le_scan_type = 0x1; // active 3948 hci_stack->le_scan_interval = 0x1e0; // 300 ms 3949 hci_stack->le_scan_window = 0x30; // 30 ms 3950 #endif 3951 3952 #ifdef ENABLE_LE_PERIPHERAL 3953 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 3954 #endif 3955 3956 // connection parameter range used to answer connection parameter update requests in l2cap 3957 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 3958 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 3959 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 3960 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 3961 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 3962 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 3963 3964 hci_state_reset(); 3965 } 3966 3967 void hci_deinit(void){ 3968 btstack_run_loop_remove_timer(&hci_stack->timeout); 3969 #ifdef HAVE_MALLOC 3970 if (hci_stack) { 3971 free(hci_stack); 3972 } 3973 #endif 3974 hci_stack = NULL; 3975 3976 #ifdef ENABLE_CLASSIC 3977 disable_l2cap_timeouts = 0; 3978 #endif 3979 } 3980 3981 /** 3982 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 3983 */ 3984 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 3985 hci_stack->chipset = chipset_driver; 3986 3987 // reset chipset driver - init is also called on power_up 3988 if (hci_stack->chipset && hci_stack->chipset->init){ 3989 hci_stack->chipset->init(hci_stack->config); 3990 } 3991 } 3992 3993 /** 3994 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 3995 */ 3996 void hci_set_control(const btstack_control_t *hardware_control){ 3997 // references to used control implementation 3998 hci_stack->control = hardware_control; 3999 // init with transport config 4000 hardware_control->init(hci_stack->config); 4001 } 4002 4003 static void hci_discard_connections(void){ 4004 btstack_linked_list_iterator_t lit; 4005 btstack_linked_list_iterator_init(&lit, &hci_stack->connections); 4006 while (btstack_linked_list_iterator_has_next(&lit)){ 4007 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4008 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&lit); 4009 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4010 hci_shutdown_connection(connection); 4011 } 4012 } 4013 4014 void hci_close(void){ 4015 4016 #ifdef ENABLE_CLASSIC 4017 // close remote device db 4018 if (hci_stack->link_key_db) { 4019 hci_stack->link_key_db->close(); 4020 } 4021 #endif 4022 4023 hci_discard_connections(); 4024 4025 hci_power_control(HCI_POWER_OFF); 4026 4027 #ifdef HAVE_MALLOC 4028 free(hci_stack); 4029 #endif 4030 hci_stack = NULL; 4031 } 4032 4033 #ifdef HAVE_SCO_TRANSPORT 4034 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4035 hci_stack->sco_transport = sco_transport; 4036 sco_transport->register_packet_handler(&packet_handler); 4037 } 4038 #endif 4039 4040 #ifdef ENABLE_CLASSIC 4041 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4042 // validate ranage and set 4043 if (encryption_key_size < 7) return; 4044 if (encryption_key_size > 16) return; 4045 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4046 } 4047 4048 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4049 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4050 hci_stack->gap_security_mode = security_mode; 4051 return ERROR_CODE_SUCCESS; 4052 } else { 4053 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4054 } 4055 } 4056 4057 gap_security_mode_t gap_get_security_mode(void){ 4058 return hci_stack->gap_security_mode; 4059 } 4060 4061 void gap_set_security_level(gap_security_level_t security_level){ 4062 hci_stack->gap_security_level = security_level; 4063 } 4064 4065 gap_security_level_t gap_get_security_level(void){ 4066 if (hci_stack->gap_secure_connections_only_mode){ 4067 return LEVEL_4; 4068 } 4069 return hci_stack->gap_security_level; 4070 } 4071 4072 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4073 hci_stack->gap_minimal_service_security_level = security_level; 4074 } 4075 4076 void gap_set_secure_connections_only_mode(bool enable){ 4077 hci_stack->gap_secure_connections_only_mode = enable; 4078 } 4079 4080 bool gap_get_secure_connections_only_mode(void){ 4081 return hci_stack->gap_secure_connections_only_mode; 4082 } 4083 #endif 4084 4085 #ifdef ENABLE_CLASSIC 4086 void gap_set_class_of_device(uint32_t class_of_device){ 4087 hci_stack->class_of_device = class_of_device; 4088 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4089 hci_run(); 4090 } 4091 4092 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4093 hci_stack->default_link_policy_settings = default_link_policy_settings; 4094 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4095 hci_run(); 4096 } 4097 4098 void gap_set_allow_role_switch(bool allow_role_switch){ 4099 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4100 } 4101 4102 uint8_t hci_get_allow_role_switch(void){ 4103 return hci_stack->allow_role_switch; 4104 } 4105 4106 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4107 hci_stack->link_supervision_timeout = link_supervision_timeout; 4108 } 4109 4110 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4111 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4112 } 4113 4114 uint16_t hci_automatic_flush_timeout(void){ 4115 return hci_stack->automatic_flush_timeout; 4116 } 4117 4118 void hci_disable_l2cap_timeout_check(void){ 4119 disable_l2cap_timeouts = 1; 4120 } 4121 #endif 4122 4123 #ifndef HAVE_HOST_CONTROLLER_API 4124 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4125 void hci_set_bd_addr(bd_addr_t addr){ 4126 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4127 hci_stack->custom_bd_addr_set = 1; 4128 } 4129 #endif 4130 4131 // State-Module-Driver overview 4132 // state module low-level 4133 // HCI_STATE_OFF off close 4134 // HCI_STATE_INITIALIZING, on open 4135 // HCI_STATE_WORKING, on open 4136 // HCI_STATE_HALTING, on open 4137 // HCI_STATE_SLEEPING, off/sleep close 4138 // HCI_STATE_FALLING_ASLEEP on open 4139 4140 static int hci_power_control_on(void){ 4141 4142 // power on 4143 int err = 0; 4144 if (hci_stack->control && hci_stack->control->on){ 4145 err = (*hci_stack->control->on)(); 4146 } 4147 if (err){ 4148 log_error( "POWER_ON failed"); 4149 hci_emit_hci_open_failed(); 4150 return err; 4151 } 4152 4153 // int chipset driver 4154 if (hci_stack->chipset && hci_stack->chipset->init){ 4155 hci_stack->chipset->init(hci_stack->config); 4156 } 4157 4158 // init transport 4159 if (hci_stack->hci_transport->init){ 4160 hci_stack->hci_transport->init(hci_stack->config); 4161 } 4162 4163 // open transport 4164 err = hci_stack->hci_transport->open(); 4165 if (err){ 4166 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4167 if (hci_stack->control && hci_stack->control->off){ 4168 (*hci_stack->control->off)(); 4169 } 4170 hci_emit_hci_open_failed(); 4171 return err; 4172 } 4173 return 0; 4174 } 4175 4176 static void hci_power_control_off(void){ 4177 4178 log_info("hci_power_control_off"); 4179 4180 // close low-level device 4181 hci_stack->hci_transport->close(); 4182 4183 log_info("hci_power_control_off - hci_transport closed"); 4184 4185 // power off 4186 if (hci_stack->control && hci_stack->control->off){ 4187 (*hci_stack->control->off)(); 4188 } 4189 4190 log_info("hci_power_control_off - control closed"); 4191 4192 hci_stack->state = HCI_STATE_OFF; 4193 } 4194 4195 static void hci_power_control_sleep(void){ 4196 4197 log_info("hci_power_control_sleep"); 4198 4199 #if 0 4200 // don't close serial port during sleep 4201 4202 // close low-level device 4203 hci_stack->hci_transport->close(hci_stack->config); 4204 #endif 4205 4206 // sleep mode 4207 if (hci_stack->control && hci_stack->control->sleep){ 4208 (*hci_stack->control->sleep)(); 4209 } 4210 4211 hci_stack->state = HCI_STATE_SLEEPING; 4212 } 4213 4214 static int hci_power_control_wake(void){ 4215 4216 log_info("hci_power_control_wake"); 4217 4218 // wake on 4219 if (hci_stack->control && hci_stack->control->wake){ 4220 (*hci_stack->control->wake)(); 4221 } 4222 4223 #if 0 4224 // open low-level device 4225 int err = hci_stack->hci_transport->open(hci_stack->config); 4226 if (err){ 4227 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4228 if (hci_stack->control && hci_stack->control->off){ 4229 (*hci_stack->control->off)(); 4230 } 4231 hci_emit_hci_open_failed(); 4232 return err; 4233 } 4234 #endif 4235 4236 return 0; 4237 } 4238 4239 static void hci_power_enter_initializing_state(void){ 4240 // set up state machine 4241 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4242 hci_stack->hci_packet_buffer_reserved = false; 4243 hci_stack->state = HCI_STATE_INITIALIZING; 4244 hci_stack->substate = HCI_INIT_SEND_RESET; 4245 } 4246 4247 static void hci_power_enter_halting_state(void){ 4248 #ifdef ENABLE_BLE 4249 hci_whitelist_free(); 4250 #endif 4251 // see hci_run 4252 hci_stack->state = HCI_STATE_HALTING; 4253 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4254 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4255 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4256 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4257 btstack_run_loop_add_timer(&hci_stack->timeout); 4258 } 4259 4260 // returns error 4261 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4262 int err; 4263 switch (power_mode){ 4264 case HCI_POWER_ON: 4265 err = hci_power_control_on(); 4266 if (err != 0) { 4267 log_error("hci_power_control_on() error %d", err); 4268 return err; 4269 } 4270 hci_power_enter_initializing_state(); 4271 break; 4272 case HCI_POWER_OFF: 4273 // do nothing 4274 break; 4275 case HCI_POWER_SLEEP: 4276 // do nothing (with SLEEP == OFF) 4277 break; 4278 default: 4279 btstack_assert(false); 4280 break; 4281 } 4282 return ERROR_CODE_SUCCESS; 4283 } 4284 4285 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4286 switch (power_mode){ 4287 case HCI_POWER_ON: 4288 // do nothing 4289 break; 4290 case HCI_POWER_OFF: 4291 // no connections yet, just turn it off 4292 hci_power_control_off(); 4293 break; 4294 case HCI_POWER_SLEEP: 4295 // no connections yet, just turn it off 4296 hci_power_control_sleep(); 4297 break; 4298 default: 4299 btstack_assert(false); 4300 break; 4301 } 4302 return ERROR_CODE_SUCCESS; 4303 } 4304 4305 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4306 switch (power_mode){ 4307 case HCI_POWER_ON: 4308 // do nothing 4309 break; 4310 case HCI_POWER_OFF: 4311 hci_power_enter_halting_state(); 4312 break; 4313 case HCI_POWER_SLEEP: 4314 // see hci_run 4315 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4316 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4317 break; 4318 default: 4319 btstack_assert(false); 4320 break; 4321 } 4322 return ERROR_CODE_SUCCESS; 4323 } 4324 4325 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4326 switch (power_mode){ 4327 case HCI_POWER_ON: 4328 hci_power_enter_initializing_state(); 4329 break; 4330 case HCI_POWER_OFF: 4331 // do nothing 4332 break; 4333 case HCI_POWER_SLEEP: 4334 // see hci_run 4335 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4336 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4337 break; 4338 default: 4339 btstack_assert(false); 4340 break; 4341 } 4342 return ERROR_CODE_SUCCESS; 4343 } 4344 4345 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4346 switch (power_mode){ 4347 case HCI_POWER_ON: 4348 hci_power_enter_initializing_state(); 4349 break; 4350 case HCI_POWER_OFF: 4351 hci_power_enter_halting_state(); 4352 break; 4353 case HCI_POWER_SLEEP: 4354 // do nothing 4355 break; 4356 default: 4357 btstack_assert(false); 4358 break; 4359 } 4360 return ERROR_CODE_SUCCESS; 4361 } 4362 4363 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4364 int err; 4365 switch (power_mode){ 4366 case HCI_POWER_ON: 4367 err = hci_power_control_wake(); 4368 if (err) return err; 4369 hci_power_enter_initializing_state(); 4370 break; 4371 case HCI_POWER_OFF: 4372 hci_power_enter_halting_state(); 4373 break; 4374 case HCI_POWER_SLEEP: 4375 // do nothing 4376 break; 4377 default: 4378 btstack_assert(false); 4379 break; 4380 } 4381 return ERROR_CODE_SUCCESS; 4382 } 4383 4384 int hci_power_control(HCI_POWER_MODE power_mode){ 4385 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4386 int err = 0; 4387 switch (hci_stack->state){ 4388 case HCI_STATE_OFF: 4389 err = hci_power_control_state_off(power_mode); 4390 break; 4391 case HCI_STATE_INITIALIZING: 4392 err = hci_power_control_state_initializing(power_mode); 4393 break; 4394 case HCI_STATE_WORKING: 4395 err = hci_power_control_state_working(power_mode); 4396 break; 4397 case HCI_STATE_HALTING: 4398 err = hci_power_control_state_halting(power_mode); 4399 break; 4400 case HCI_STATE_FALLING_ASLEEP: 4401 err = hci_power_control_state_falling_asleep(power_mode); 4402 break; 4403 case HCI_STATE_SLEEPING: 4404 err = hci_power_control_state_sleeping(power_mode); 4405 break; 4406 default: 4407 btstack_assert(false); 4408 break; 4409 } 4410 if (err != 0){ 4411 return err; 4412 } 4413 4414 // create internal event 4415 hci_emit_state(); 4416 4417 // trigger next/first action 4418 hci_run(); 4419 4420 return 0; 4421 } 4422 4423 4424 static void hci_halting_run(void) { 4425 4426 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4427 4428 hci_connection_t *connection; 4429 #ifdef ENABLE_BLE 4430 #ifdef ENABLE_LE_PERIPHERAL 4431 bool stop_advertismenets; 4432 #endif 4433 #endif 4434 4435 switch (hci_stack->substate) { 4436 case HCI_HALTING_CLASSIC_STOP: 4437 #ifdef ENABLE_CLASSIC 4438 if (!hci_can_send_command_packet_now()) return; 4439 4440 if (hci_stack->connectable || hci_stack->discoverable){ 4441 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4442 hci_send_cmd(&hci_write_scan_enable, 0); 4443 return; 4444 } 4445 #endif 4446 /* fall through */ 4447 4448 case HCI_HALTING_LE_ADV_STOP: 4449 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4450 4451 #ifdef ENABLE_BLE 4452 #ifdef ENABLE_LE_PERIPHERAL 4453 if (!hci_can_send_command_packet_now()) return; 4454 4455 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4456 4457 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4458 if (hci_extended_advertising_supported()){ 4459 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4460 btstack_linked_list_iterator_t it; 4461 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4462 // stop all periodic advertisements and check if an extended set is active 4463 while (btstack_linked_list_iterator_has_next(&it)){ 4464 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4465 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4466 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4467 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4468 return; 4469 } 4470 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4471 stop_advertismenets = true; 4472 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4473 } 4474 } 4475 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4476 if (stop_advertismenets){ 4477 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4478 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4479 return; 4480 } 4481 } 4482 else 4483 #else 4484 { 4485 if (stop_advertismenets) { 4486 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4487 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4488 return; 4489 } 4490 } 4491 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4492 #endif /* ENABLE_LE_PERIPHERAL */ 4493 #endif /* ENABLE_BLE */ 4494 4495 /* fall through */ 4496 4497 case HCI_HALTING_LE_SCAN_STOP: 4498 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4499 if (!hci_can_send_command_packet_now()) return; 4500 4501 #ifdef ENABLE_BLE 4502 #ifdef ENABLE_LE_CENTRAL 4503 if (hci_stack->le_scanning_active){ 4504 hci_le_scan_stop(); 4505 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4506 return; 4507 } 4508 #endif 4509 #endif 4510 4511 /* fall through */ 4512 4513 case HCI_HALTING_DISCONNECT_ALL: 4514 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4515 if (!hci_can_send_command_packet_now()) return; 4516 4517 // close all open connections 4518 connection = (hci_connection_t *) hci_stack->connections; 4519 if (connection) { 4520 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4521 4522 // check state 4523 if (connection->state == SENT_DISCONNECT) return; 4524 connection->state = SENT_DISCONNECT; 4525 4526 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4527 4528 // finally, send the disconnect command 4529 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4530 return; 4531 } 4532 4533 btstack_run_loop_remove_timer(&hci_stack->timeout); 4534 4535 hci_stack->substate = HCI_HALTING_READY_FOR_CLOSE; 4536 4537 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4538 log_info("HCI_STATE_HALTING: wait 50 ms"); 4539 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4540 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4541 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4542 btstack_run_loop_add_timer(&hci_stack->timeout); 4543 break; 4544 4545 case HCI_HALTING_CLOSE: 4546 // close left over connections (that had not been properly closed before) 4547 hci_discard_connections(); 4548 4549 log_info("HCI_STATE_HALTING, calling off"); 4550 4551 // switch mode 4552 hci_power_control_off(); 4553 4554 log_info("HCI_STATE_HALTING, emitting state"); 4555 hci_emit_state(); 4556 log_info("HCI_STATE_HALTING, done"); 4557 break; 4558 4559 case HCI_HALTING_W4_CLOSE_TIMER: 4560 // keep waiting 4561 4562 break; 4563 default: 4564 break; 4565 } 4566 }; 4567 4568 static void hci_falling_asleep_run(void){ 4569 hci_connection_t * connection; 4570 switch(hci_stack->substate) { 4571 case HCI_FALLING_ASLEEP_DISCONNECT: 4572 log_info("HCI_STATE_FALLING_ASLEEP"); 4573 // close all open connections 4574 connection = (hci_connection_t *) hci_stack->connections; 4575 if (connection){ 4576 4577 // send disconnect 4578 if (!hci_can_send_command_packet_now()) return; 4579 4580 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4581 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4582 4583 // send disconnected event right away - causes higher layer connections to get closed, too. 4584 hci_shutdown_connection(connection); 4585 return; 4586 } 4587 4588 if (hci_classic_supported()){ 4589 // disable page and inquiry scan 4590 if (!hci_can_send_command_packet_now()) return; 4591 4592 log_info("HCI_STATE_HALTING, disabling inq scans"); 4593 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4594 4595 // continue in next sub state 4596 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4597 break; 4598 } 4599 4600 /* fall through */ 4601 4602 case HCI_FALLING_ASLEEP_COMPLETE: 4603 log_info("HCI_STATE_HALTING, calling sleep"); 4604 // switch mode 4605 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4606 hci_emit_state(); 4607 break; 4608 4609 default: 4610 break; 4611 } 4612 } 4613 4614 #ifdef ENABLE_CLASSIC 4615 4616 static void hci_update_scan_enable(void){ 4617 // 2 = page scan, 1 = inq scan 4618 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4619 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4620 hci_run(); 4621 } 4622 4623 void gap_discoverable_control(uint8_t enable){ 4624 if (enable) enable = 1; // normalize argument 4625 4626 if (hci_stack->discoverable == enable){ 4627 hci_emit_discoverable_enabled(hci_stack->discoverable); 4628 return; 4629 } 4630 4631 hci_stack->discoverable = enable; 4632 hci_update_scan_enable(); 4633 } 4634 4635 void gap_connectable_control(uint8_t enable){ 4636 if (enable) enable = 1; // normalize argument 4637 4638 // don't emit event 4639 if (hci_stack->connectable == enable) return; 4640 4641 hci_stack->connectable = enable; 4642 hci_update_scan_enable(); 4643 } 4644 #endif 4645 4646 void gap_local_bd_addr(bd_addr_t address_buffer){ 4647 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 4648 } 4649 4650 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4651 static void hci_host_num_completed_packets(void){ 4652 4653 // create packet manually as arrays are not supported and num_commands should not get reduced 4654 hci_reserve_packet_buffer(); 4655 uint8_t * packet = hci_get_outgoing_packet_buffer(); 4656 4657 uint16_t size = 0; 4658 uint16_t num_handles = 0; 4659 packet[size++] = 0x35; 4660 packet[size++] = 0x0c; 4661 size++; // skip param len 4662 size++; // skip num handles 4663 4664 // add { handle, packets } entries 4665 btstack_linked_item_t * it; 4666 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 4667 hci_connection_t * connection = (hci_connection_t *) it; 4668 if (connection->num_packets_completed){ 4669 little_endian_store_16(packet, size, connection->con_handle); 4670 size += 2; 4671 little_endian_store_16(packet, size, connection->num_packets_completed); 4672 size += 2; 4673 // 4674 num_handles++; 4675 connection->num_packets_completed = 0; 4676 } 4677 } 4678 4679 packet[2] = size - 3; 4680 packet[3] = num_handles; 4681 4682 hci_stack->host_completed_packets = 0; 4683 4684 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 4685 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 4686 4687 // release packet buffer for synchronous transport implementations 4688 if (hci_transport_synchronous()){ 4689 hci_release_packet_buffer(); 4690 hci_emit_transport_packet_sent(); 4691 } 4692 } 4693 #endif 4694 4695 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 4696 UNUSED(ds); 4697 hci_stack->substate = HCI_HALTING_CLOSE; 4698 // allow packet handlers to defer final shutdown 4699 hci_emit_state(); 4700 hci_run(); 4701 } 4702 4703 static bool hci_run_acl_fragments(void){ 4704 if (hci_stack->acl_fragmentation_total_size > 0u) { 4705 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 4706 hci_connection_t *connection = hci_connection_for_handle(con_handle); 4707 if (connection) { 4708 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 4709 hci_send_acl_packet_fragments(connection); 4710 return true; 4711 } 4712 } else { 4713 // connection gone -> discard further fragments 4714 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 4715 hci_stack->acl_fragmentation_total_size = 0; 4716 hci_stack->acl_fragmentation_pos = 0; 4717 } 4718 } 4719 return false; 4720 } 4721 4722 #ifdef ENABLE_CLASSIC 4723 4724 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4725 static bool hci_classic_operation_active(void) { 4726 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 4727 return true; 4728 } 4729 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 4730 return true; 4731 } 4732 btstack_linked_item_t * it; 4733 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 4734 hci_connection_t *connection = (hci_connection_t *) it; 4735 switch (connection->state) { 4736 case SENT_CREATE_CONNECTION: 4737 case SENT_CANCEL_CONNECTION: 4738 case SENT_DISCONNECT: 4739 return true; 4740 default: 4741 break; 4742 } 4743 } 4744 return false; 4745 } 4746 #endif 4747 4748 static bool hci_run_general_gap_classic(void){ 4749 4750 // assert stack is working and classic is active 4751 if (hci_classic_supported() == false) return false; 4752 if (hci_stack->state != HCI_STATE_WORKING) return false; 4753 4754 // decline incoming connections 4755 if (hci_stack->decline_reason){ 4756 uint8_t reason = hci_stack->decline_reason; 4757 hci_stack->decline_reason = 0; 4758 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 4759 return true; 4760 } 4761 4762 if (hci_stack->gap_tasks_classic != 0){ 4763 hci_run_gap_tasks_classic(); 4764 return true; 4765 } 4766 4767 // start/stop inquiry 4768 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 4769 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4770 if (hci_classic_operation_active() == false) 4771 #endif 4772 { 4773 uint8_t duration = hci_stack->inquiry_state; 4774 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 4775 if (hci_stack->inquiry_max_period_length != 0){ 4776 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); 4777 } else { 4778 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 4779 } 4780 return true; 4781 } 4782 } 4783 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 4784 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 4785 hci_send_cmd(&hci_inquiry_cancel); 4786 return true; 4787 } 4788 4789 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 4790 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_EXIT_PERIODIC_COMPLETE; 4791 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 4792 return true; 4793 } 4794 4795 // remote name request 4796 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 4797 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4798 if (hci_classic_operation_active() == false) 4799 #endif 4800 { 4801 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 4802 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 4803 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 4804 return true; 4805 } 4806 } 4807 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4808 // Local OOB data 4809 if (hci_stack->classic_read_local_oob_data){ 4810 hci_stack->classic_read_local_oob_data = false; 4811 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 4812 hci_send_cmd(&hci_read_local_extended_oob_data); 4813 } else { 4814 hci_send_cmd(&hci_read_local_oob_data); 4815 } 4816 } 4817 #endif 4818 // pairing 4819 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 4820 uint8_t state = hci_stack->gap_pairing_state; 4821 uint8_t pin_code[16]; 4822 switch (state){ 4823 case GAP_PAIRING_STATE_SEND_PIN: 4824 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4825 memset(pin_code, 0, 16); 4826 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 4827 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 4828 break; 4829 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 4830 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4831 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 4832 break; 4833 case GAP_PAIRING_STATE_SEND_PASSKEY: 4834 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4835 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 4836 break; 4837 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 4838 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4839 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 4840 break; 4841 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 4842 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4843 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 4844 break; 4845 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 4846 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4847 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 4848 break; 4849 default: 4850 break; 4851 } 4852 return true; 4853 } 4854 return false; 4855 } 4856 #endif 4857 4858 #ifdef ENABLE_BLE 4859 4860 #ifdef ENABLE_LE_CENTRAL 4861 static void hci_le_scan_stop(void){ 4862 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4863 if (hci_extended_advertising_supported()) { 4864 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 4865 } else 4866 #endif 4867 { 4868 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 4869 } 4870 } 4871 #endif 4872 4873 #ifdef ENABLE_LE_PERIPHERAL 4874 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4875 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 4876 uint8_t operation = 0; 4877 if (pos == 0){ 4878 // first fragment or complete data 4879 operation |= 1; 4880 } 4881 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 4882 // last fragment or complete data 4883 operation |= 2; 4884 } 4885 return operation; 4886 } 4887 #endif 4888 #endif 4889 4890 static bool hci_run_general_gap_le(void){ 4891 4892 btstack_linked_list_iterator_t lit; 4893 4894 // Phase 1: collect what to stop 4895 4896 #ifdef ENABLE_LE_CENTRAL 4897 bool scanning_stop = false; 4898 bool connecting_stop = false; 4899 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4900 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4901 bool periodic_sync_stop = false; 4902 #endif 4903 #endif 4904 #endif 4905 4906 #ifdef ENABLE_LE_PERIPHERAL 4907 bool advertising_stop = false; 4908 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4909 le_advertising_set_t * advertising_stop_set = NULL; 4910 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4911 bool periodic_advertising_stop = false; 4912 #endif 4913 #endif 4914 #endif 4915 4916 // check if own address changes 4917 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 4918 4919 // check if whitelist needs modification 4920 bool whitelist_modification_pending = false; 4921 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 4922 while (btstack_linked_list_iterator_has_next(&lit)){ 4923 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 4924 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 4925 whitelist_modification_pending = true; 4926 break; 4927 } 4928 } 4929 4930 // check if resolving list needs modification 4931 bool resolving_list_modification_pending = false; 4932 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4933 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 4934 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 4935 resolving_list_modification_pending = true; 4936 } 4937 #endif 4938 4939 #ifdef ENABLE_LE_CENTRAL 4940 4941 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4942 // check if periodic advertiser list needs modification 4943 bool periodic_list_modification_pending = false; 4944 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 4945 while (btstack_linked_list_iterator_has_next(&lit)){ 4946 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 4947 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 4948 periodic_list_modification_pending = true; 4949 break; 4950 } 4951 } 4952 #endif 4953 4954 // scanning control 4955 if (hci_stack->le_scanning_active) { 4956 // stop if: 4957 // - parameter change required 4958 // - it's disabled 4959 // - whitelist change required but used for scanning 4960 // - resolving list modified 4961 // - own address changes 4962 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 4963 if ((hci_stack->le_scanning_param_update) || 4964 !hci_stack->le_scanning_enabled || 4965 (scanning_uses_whitelist && whitelist_modification_pending) || 4966 resolving_list_modification_pending || 4967 random_address_change){ 4968 4969 scanning_stop = true; 4970 } 4971 } 4972 4973 // connecting control 4974 bool connecting_with_whitelist; 4975 switch (hci_stack->le_connecting_state){ 4976 case LE_CONNECTING_DIRECT: 4977 case LE_CONNECTING_WHITELIST: 4978 // stop connecting if: 4979 // - connecting uses white and whitelist modification pending 4980 // - if it got disabled 4981 // - resolving list modified 4982 // - own address changes 4983 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 4984 if ((connecting_with_whitelist && whitelist_modification_pending) || 4985 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 4986 resolving_list_modification_pending || 4987 random_address_change) { 4988 4989 connecting_stop = true; 4990 } 4991 break; 4992 default: 4993 break; 4994 } 4995 4996 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4997 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4998 // periodic sync control 4999 bool sync_with_advertiser_list; 5000 switch(hci_stack->le_periodic_sync_state){ 5001 case LE_CONNECTING_DIRECT: 5002 case LE_CONNECTING_WHITELIST: 5003 // stop sync if: 5004 // - sync with advertiser list and advertiser list modification pending 5005 // - if it got disabled 5006 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5007 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5008 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5009 periodic_sync_stop = true; 5010 } 5011 break; 5012 default: 5013 break; 5014 } 5015 #endif 5016 #endif 5017 5018 #endif /* ENABLE_LE_CENTRAL */ 5019 5020 #ifdef ENABLE_LE_PERIPHERAL 5021 // le advertisement control 5022 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5023 // stop if: 5024 // - parameter change required 5025 // - random address used in advertising and changes 5026 // - it's disabled 5027 // - whitelist change required but used for advertisement filter policy 5028 // - resolving list modified 5029 // - own address changes 5030 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5031 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5032 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5033 if (advertising_change || 5034 (advertising_uses_random_address && random_address_change) || 5035 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5036 (advertising_uses_whitelist && whitelist_modification_pending) || 5037 resolving_list_modification_pending || 5038 random_address_change) { 5039 5040 advertising_stop = true; 5041 } 5042 } 5043 5044 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5045 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5046 btstack_linked_list_iterator_t it; 5047 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5048 while (btstack_linked_list_iterator_has_next(&it)){ 5049 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5050 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5051 // stop if: 5052 // - parameter change required 5053 // - random address used in connectable advertising and changes 5054 // - it's disabled 5055 // - whitelist change required but used for advertisement filter policy 5056 // - resolving list modified 5057 // - own address changes 5058 // - advertisement set will be removed 5059 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5060 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5061 bool advertising_uses_random_address = 5062 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5063 advertising_connectable; 5064 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5065 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5066 bool advertising_set_random_address_change = 5067 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5068 bool advertising_set_will_be_removed = 5069 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5070 if (advertising_parameter_change || 5071 (advertising_uses_random_address && advertising_set_random_address_change) || 5072 (advertising_enabled == false) || 5073 (advertising_uses_whitelist && whitelist_modification_pending) || 5074 resolving_list_modification_pending || 5075 advertising_set_will_be_removed) { 5076 5077 advertising_stop = true; 5078 advertising_stop_set = advertising_set; 5079 break; 5080 } 5081 } 5082 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5083 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5084 // stop if: 5085 // - it's disabled 5086 // - parameter change required 5087 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5088 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5089 if ((periodic_enabled == false) || periodic_parameter_change){ 5090 periodic_advertising_stop = true; 5091 advertising_stop_set = advertising_set; 5092 } 5093 } 5094 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5095 } 5096 } 5097 #endif 5098 5099 #endif 5100 5101 5102 // Phase 2: stop everything that should be off during modifications 5103 5104 #ifdef ENABLE_LE_CENTRAL 5105 if (scanning_stop){ 5106 hci_stack->le_scanning_active = false; 5107 hci_le_scan_stop(); 5108 return true; 5109 } 5110 5111 if (connecting_stop){ 5112 hci_send_cmd(&hci_le_create_connection_cancel); 5113 return true; 5114 } 5115 5116 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5117 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5118 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5119 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5120 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5121 return true; 5122 } 5123 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5124 if (periodic_sync_stop){ 5125 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5126 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5127 return true; 5128 } 5129 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5130 #endif 5131 #endif 5132 5133 #ifdef ENABLE_LE_PERIPHERAL 5134 if (advertising_stop){ 5135 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5136 if (hci_extended_advertising_supported()) { 5137 uint8_t advertising_stop_handle; 5138 if (advertising_stop_set != NULL){ 5139 advertising_stop_handle = advertising_stop_set->advertising_handle; 5140 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5141 } else { 5142 advertising_stop_handle = 0; 5143 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5144 } 5145 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5146 const uint16_t durations[] = { 0 }; 5147 const uint16_t max_events[] = { 0 }; 5148 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5149 } else 5150 #endif 5151 { 5152 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5153 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5154 } 5155 return true; 5156 } 5157 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5158 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5159 if (periodic_advertising_stop){ 5160 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5161 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5162 return true; 5163 } 5164 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5165 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5166 #endif 5167 5168 // Phase 3: modify 5169 5170 if (random_address_change){ 5171 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5172 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5173 if (hci_extended_advertising_supported()) { 5174 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5175 } 5176 #endif 5177 { 5178 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5179 } 5180 return true; 5181 } 5182 5183 #ifdef ENABLE_LE_CENTRAL 5184 if (hci_stack->le_scanning_param_update){ 5185 hci_stack->le_scanning_param_update = false; 5186 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5187 if (hci_extended_advertising_supported()){ 5188 // prepare arrays for all PHYs 5189 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5190 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5191 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5192 uint8_t scanning_phys = 1; // LE 1M PHY 5193 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5194 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5195 } else 5196 #endif 5197 { 5198 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5199 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5200 } 5201 return true; 5202 } 5203 #endif 5204 5205 #ifdef ENABLE_LE_PERIPHERAL 5206 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5207 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5208 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5209 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5210 if (hci_extended_advertising_supported()){ 5211 // map advertisment type to advertising event properties 5212 uint16_t adv_event_properties = 0; 5213 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5214 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5215 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5216 } 5217 hci_stack->le_advertising_set_in_current_command = 0; 5218 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5219 0, 5220 adv_event_properties, 5221 hci_stack->le_advertisements_interval_min, 5222 hci_stack->le_advertisements_interval_max, 5223 hci_stack->le_advertisements_channel_map, 5224 hci_stack->le_advertisements_own_addr_type, 5225 hci_stack->le_advertisements_direct_address_type, 5226 hci_stack->le_advertisements_direct_address, 5227 hci_stack->le_advertisements_filter_policy, 5228 0x7f, // tx power: no preference 5229 0x01, // primary adv phy: LE 1M 5230 0, // secondary adv max skip 5231 0, // secondary adv phy 5232 0, // adv sid 5233 0 // scan request notification 5234 ); 5235 } 5236 #endif 5237 { 5238 hci_send_cmd(&hci_le_set_advertising_parameters, 5239 hci_stack->le_advertisements_interval_min, 5240 hci_stack->le_advertisements_interval_max, 5241 hci_stack->le_advertisements_type, 5242 hci_stack->le_advertisements_own_addr_type, 5243 hci_stack->le_advertisements_direct_address_type, 5244 hci_stack->le_advertisements_direct_address, 5245 hci_stack->le_advertisements_channel_map, 5246 hci_stack->le_advertisements_filter_policy); 5247 } 5248 return true; 5249 } 5250 5251 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5252 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5253 uint8_t adv_data_clean[31]; 5254 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5255 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5256 hci_stack->le_advertisements_data_len); 5257 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5258 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5259 if (hci_extended_advertising_supported()){ 5260 hci_stack->le_advertising_set_in_current_command = 0; 5261 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5262 } else 5263 #endif 5264 { 5265 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5266 } 5267 return true; 5268 } 5269 5270 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5271 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5272 uint8_t scan_data_clean[31]; 5273 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5274 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5275 hci_stack->le_scan_response_data_len); 5276 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5277 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5278 if (hci_extended_advertising_supported()){ 5279 hci_stack->le_advertising_set_in_current_command = 0; 5280 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5281 } else 5282 #endif 5283 { 5284 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5285 } 5286 return true; 5287 } 5288 5289 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5290 if (hci_extended_advertising_supported()) { 5291 btstack_linked_list_iterator_t it; 5292 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5293 while (btstack_linked_list_iterator_has_next(&it)){ 5294 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5295 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5296 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5297 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5298 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5299 return true; 5300 } 5301 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5302 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5303 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5304 return true; 5305 } 5306 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5307 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5308 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5309 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5310 advertising_set->advertising_handle, 5311 advertising_set->extended_params.advertising_event_properties, 5312 advertising_set->extended_params.primary_advertising_interval_min, 5313 advertising_set->extended_params.primary_advertising_interval_max, 5314 advertising_set->extended_params.primary_advertising_channel_map, 5315 advertising_set->extended_params.own_address_type, 5316 advertising_set->extended_params.peer_address_type, 5317 advertising_set->extended_params.peer_address, 5318 advertising_set->extended_params.advertising_filter_policy, 5319 advertising_set->extended_params.advertising_tx_power, 5320 advertising_set->extended_params.primary_advertising_phy, 5321 advertising_set->extended_params.secondary_advertising_max_skip, 5322 advertising_set->extended_params.secondary_advertising_phy, 5323 advertising_set->extended_params.advertising_sid, 5324 advertising_set->extended_params.scan_request_notification_enable 5325 ); 5326 return true; 5327 } 5328 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5329 uint16_t pos = advertising_set->adv_data_pos; 5330 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5331 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5332 if ((operation & 0x02) != 0){ 5333 // last fragment or complete data 5334 operation |= 2; 5335 advertising_set->adv_data_pos = 0; 5336 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5337 } else { 5338 advertising_set->adv_data_pos += data_to_upload; 5339 } 5340 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5341 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5342 return true; 5343 } 5344 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5345 uint16_t pos = advertising_set->scan_data_pos; 5346 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5347 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5348 if ((operation & 0x02) != 0){ 5349 advertising_set->scan_data_pos = 0; 5350 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5351 } else { 5352 advertising_set->scan_data_pos += data_to_upload; 5353 } 5354 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5355 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5356 return true; 5357 } 5358 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5359 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5360 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5361 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5362 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5363 advertising_set->advertising_handle, 5364 advertising_set->periodic_params.periodic_advertising_interval_min, 5365 advertising_set->periodic_params.periodic_advertising_interval_max, 5366 advertising_set->periodic_params.periodic_advertising_properties); 5367 return true; 5368 } 5369 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5370 uint16_t pos = advertising_set->periodic_data_pos; 5371 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5372 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5373 if ((operation & 0x02) != 0){ 5374 // last fragment or complete data 5375 operation |= 2; 5376 advertising_set->periodic_data_pos = 0; 5377 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5378 } else { 5379 advertising_set->periodic_data_pos += data_to_upload; 5380 } 5381 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5382 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5383 return true; 5384 } 5385 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5386 } 5387 } 5388 #endif 5389 5390 #endif 5391 5392 #ifdef ENABLE_LE_CENTRAL 5393 // if connect with whitelist was active and is not cancelled yet, wait until next time 5394 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5395 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5396 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5397 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5398 #endif 5399 #endif 5400 5401 // LE Whitelist Management 5402 if (whitelist_modification_pending){ 5403 // add/remove entries 5404 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5405 while (btstack_linked_list_iterator_has_next(&lit)){ 5406 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5407 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5408 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5409 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5410 return true; 5411 } 5412 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5413 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5414 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5415 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5416 return true; 5417 } 5418 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5419 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5420 btstack_memory_whitelist_entry_free(entry); 5421 } 5422 } 5423 } 5424 5425 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5426 // LE Resolving List Management 5427 if (resolving_list_supported) { 5428 uint16_t i; 5429 switch (hci_stack->le_resolving_list_state) { 5430 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5431 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5432 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5433 return true; 5434 case LE_RESOLVING_LIST_READ_SIZE: 5435 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5436 hci_send_cmd(&hci_le_read_resolving_list_size); 5437 return true; 5438 case LE_RESOLVING_LIST_SEND_CLEAR: 5439 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5440 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5441 sizeof(hci_stack->le_resolving_list_add_entries)); 5442 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5443 sizeof(hci_stack->le_resolving_list_remove_entries)); 5444 hci_send_cmd(&hci_le_clear_resolving_list); 5445 return true; 5446 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5447 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5448 uint8_t offset = i >> 3; 5449 uint8_t mask = 1 << (i & 7); 5450 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5451 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5452 bd_addr_t peer_identity_addreses; 5453 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5454 sm_key_t peer_irk; 5455 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5456 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5457 5458 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5459 // trigger whitelist entry 'update' (work around for controller bug) 5460 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5461 while (btstack_linked_list_iterator_has_next(&lit)) { 5462 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5463 if (entry->address_type != peer_identity_addr_type) continue; 5464 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5465 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5466 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5467 } 5468 #endif 5469 5470 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5471 peer_identity_addreses); 5472 return true; 5473 } 5474 5475 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5476 5477 /* fall through */ 5478 5479 case LE_RESOLVING_LIST_ADD_ENTRIES: 5480 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5481 uint8_t offset = i >> 3; 5482 uint8_t mask = 1 << (i & 7); 5483 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5484 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5485 bd_addr_t peer_identity_addreses; 5486 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5487 sm_key_t peer_irk; 5488 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5489 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5490 const uint8_t *local_irk = gap_get_persistent_irk(); 5491 // command uses format specifier 'P' that stores 16-byte value without flip 5492 uint8_t local_irk_flipped[16]; 5493 uint8_t peer_irk_flipped[16]; 5494 reverse_128(local_irk, local_irk_flipped); 5495 reverse_128(peer_irk, peer_irk_flipped); 5496 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5497 peer_irk_flipped, local_irk_flipped); 5498 return true; 5499 } 5500 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5501 break; 5502 5503 default: 5504 break; 5505 } 5506 } 5507 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5508 #endif 5509 5510 #ifdef ENABLE_LE_CENTRAL 5511 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5512 // LE Whitelist Management 5513 if (periodic_list_modification_pending){ 5514 // add/remove entries 5515 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5516 while (btstack_linked_list_iterator_has_next(&lit)){ 5517 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5518 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5519 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5520 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5521 return true; 5522 } 5523 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5524 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5525 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5526 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address); 5527 return true; 5528 } 5529 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5530 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5531 btstack_memory_periodic_advertiser_list_entry_free(entry); 5532 } 5533 } 5534 } 5535 #endif 5536 #endif 5537 5538 // post-pone all actions until stack is fully working 5539 if (hci_stack->state != HCI_STATE_WORKING) return false; 5540 5541 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5542 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5543 5544 // Phase 4: restore state 5545 5546 #ifdef ENABLE_LE_CENTRAL 5547 // re-start scanning 5548 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5549 hci_stack->le_scanning_active = true; 5550 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5551 if (hci_extended_advertising_supported()){ 5552 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5553 } else 5554 #endif 5555 { 5556 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5557 } 5558 return true; 5559 } 5560 #endif 5561 5562 #ifdef ENABLE_LE_CENTRAL 5563 // re-start connecting 5564 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5565 bd_addr_t null_addr; 5566 memset(null_addr, 0, 6); 5567 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5568 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5569 hci_send_cmd(&hci_le_create_connection, 5570 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5571 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5572 1, // use whitelist 5573 0, // peer address type 5574 null_addr, // peer bd addr 5575 hci_stack->le_connection_own_addr_type, // our addr type: 5576 hci_stack->le_connection_interval_min, // conn interval min 5577 hci_stack->le_connection_interval_max, // conn interval max 5578 hci_stack->le_connection_latency, // conn latency 5579 hci_stack->le_supervision_timeout, // conn latency 5580 hci_stack->le_minimum_ce_length, // min ce length 5581 hci_stack->le_maximum_ce_length // max ce length 5582 ); 5583 return true; 5584 } 5585 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5586 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5587 switch(hci_stack->le_periodic_sync_request){ 5588 case LE_CONNECTING_DIRECT: 5589 case LE_CONNECTING_WHITELIST: 5590 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5591 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5592 hci_stack->le_periodic_sync_options, 5593 hci_stack->le_periodic_sync_advertising_sid, 5594 hci_stack->le_periodic_sync_advertiser_address_type, 5595 hci_stack->le_periodic_sync_advertiser_address, 5596 hci_stack->le_periodic_sync_skip, 5597 hci_stack->le_periodic_sync_timeout, 5598 hci_stack->le_periodic_sync_cte_type); 5599 return true; 5600 default: 5601 break; 5602 } 5603 } 5604 #endif 5605 #endif 5606 5607 #ifdef ENABLE_LE_PERIPHERAL 5608 // re-start advertising 5609 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5610 // check if advertisements should be enabled given 5611 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5612 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 5613 5614 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5615 if (hci_extended_advertising_supported()){ 5616 const uint8_t advertising_handles[] = { 0 }; 5617 const uint16_t durations[] = { 0 }; 5618 const uint16_t max_events[] = { 0 }; 5619 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5620 } else 5621 #endif 5622 { 5623 hci_send_cmd(&hci_le_set_advertise_enable, 1); 5624 } 5625 return true; 5626 } 5627 5628 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5629 if (hci_extended_advertising_supported()) { 5630 btstack_linked_list_iterator_t it; 5631 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5632 while (btstack_linked_list_iterator_has_next(&it)) { 5633 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 5634 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5635 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5636 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 5637 const uint16_t durations[] = { advertising_set->enable_timeout }; 5638 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 5639 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5640 return true; 5641 } 5642 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5643 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 5644 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5645 uint8_t enable = 1; 5646 if (advertising_set->periodic_include_adi){ 5647 enable |= 2; 5648 } 5649 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 5650 return true; 5651 } 5652 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5653 } 5654 } 5655 #endif 5656 #endif 5657 5658 return false; 5659 } 5660 #endif 5661 5662 static bool hci_run_general_pending_commands(void){ 5663 btstack_linked_item_t * it; 5664 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 5665 hci_connection_t * connection = (hci_connection_t *) it; 5666 5667 switch(connection->state){ 5668 case SEND_CREATE_CONNECTION: 5669 switch(connection->address_type){ 5670 #ifdef ENABLE_CLASSIC 5671 case BD_ADDR_TYPE_ACL: 5672 log_info("sending hci_create_connection"); 5673 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 5674 break; 5675 #endif 5676 default: 5677 #ifdef ENABLE_BLE 5678 #ifdef ENABLE_LE_CENTRAL 5679 log_info("sending hci_le_create_connection"); 5680 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5681 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5682 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5683 if (hci_extended_advertising_supported()) { 5684 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 5685 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 5686 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 5687 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 5688 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 5689 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 5690 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 5691 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 5692 hci_send_cmd(&hci_le_extended_create_connection, 5693 0, // don't use whitelist 5694 hci_stack->le_connection_own_addr_type, // our addr type: 5695 connection->address_type, // peer address type 5696 connection->address, // peer bd addr 5697 1, // initiating PHY - 1M 5698 le_connection_scan_interval, // conn scan interval 5699 le_connection_scan_window, // conn scan windows 5700 le_connection_interval_min, // conn interval min 5701 le_connection_interval_max, // conn interval max 5702 le_connection_latency, // conn latency 5703 le_supervision_timeout, // conn latency 5704 le_minimum_ce_length, // min ce length 5705 le_maximum_ce_length // max ce length 5706 ); } 5707 else 5708 #endif 5709 { 5710 hci_send_cmd(&hci_le_create_connection, 5711 hci_stack->le_connection_scan_interval, // conn scan interval 5712 hci_stack->le_connection_scan_window, // conn scan windows 5713 0, // don't use whitelist 5714 connection->address_type, // peer address type 5715 connection->address, // peer bd addr 5716 hci_stack->le_connection_own_addr_type, // our addr type: 5717 hci_stack->le_connection_interval_min, // conn interval min 5718 hci_stack->le_connection_interval_max, // conn interval max 5719 hci_stack->le_connection_latency, // conn latency 5720 hci_stack->le_supervision_timeout, // conn latency 5721 hci_stack->le_minimum_ce_length, // min ce length 5722 hci_stack->le_maximum_ce_length // max ce length 5723 ); 5724 } 5725 connection->state = SENT_CREATE_CONNECTION; 5726 #endif 5727 #endif 5728 break; 5729 } 5730 return true; 5731 5732 #ifdef ENABLE_CLASSIC 5733 case RECEIVED_CONNECTION_REQUEST: 5734 connection->role = HCI_ROLE_SLAVE; 5735 if (connection->address_type == BD_ADDR_TYPE_ACL){ 5736 log_info("sending hci_accept_connection_request"); 5737 connection->state = ACCEPTED_CONNECTION_REQUEST; 5738 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 5739 return true; 5740 } 5741 break; 5742 #endif 5743 5744 #ifdef ENABLE_BLE 5745 #ifdef ENABLE_LE_CENTRAL 5746 case SEND_CANCEL_CONNECTION: 5747 connection->state = SENT_CANCEL_CONNECTION; 5748 hci_send_cmd(&hci_le_create_connection_cancel); 5749 return true; 5750 #endif 5751 #endif 5752 case SEND_DISCONNECT: 5753 connection->state = SENT_DISCONNECT; 5754 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5755 return true; 5756 5757 default: 5758 break; 5759 } 5760 5761 // no further commands if connection is about to get shut down 5762 if (connection->state == SENT_DISCONNECT) continue; 5763 5764 #ifdef ENABLE_CLASSIC 5765 5766 // Handling link key request requires remote supported features 5767 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 5768 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 5769 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 5770 5771 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 5772 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 5773 if (have_link_key && security_level_sufficient){ 5774 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 5775 } else { 5776 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 5777 } 5778 return true; 5779 } 5780 5781 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 5782 log_info("denying to pin request"); 5783 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 5784 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 5785 return true; 5786 } 5787 5788 // security assessment requires remote features 5789 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 5790 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 5791 hci_ssp_assess_security_on_io_cap_request(connection); 5792 // 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 5793 } 5794 5795 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 5796 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 5797 // set authentication requirements: 5798 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 5799 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 5800 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 5801 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 5802 authreq |= 1; 5803 } 5804 bool bonding = hci_stack->bondable; 5805 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 5806 // if we have received IO Cap Response, we're in responder role 5807 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5808 if (bonding && !remote_bonding){ 5809 log_info("Remote not bonding, dropping local flag"); 5810 bonding = false; 5811 } 5812 } 5813 if (bonding){ 5814 if (connection->bonding_flags & BONDING_DEDICATED){ 5815 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5816 } else { 5817 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5818 } 5819 } 5820 uint8_t have_oob_data = 0; 5821 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5822 if (connection->classic_oob_c_192 != NULL){ 5823 have_oob_data |= 1; 5824 } 5825 if (connection->classic_oob_c_256 != NULL){ 5826 have_oob_data |= 2; 5827 } 5828 #endif 5829 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 5830 return true; 5831 } 5832 5833 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 5834 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 5835 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 5836 return true; 5837 } 5838 5839 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5840 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 5841 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 5842 const uint8_t zero[16] = { 0 }; 5843 const uint8_t * r_192 = zero; 5844 const uint8_t * c_192 = zero; 5845 const uint8_t * r_256 = zero; 5846 const uint8_t * c_256 = zero; 5847 // verify P-256 OOB 5848 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 5849 c_256 = connection->classic_oob_c_256; 5850 if (connection->classic_oob_r_256 != NULL) { 5851 r_256 = connection->classic_oob_r_256; 5852 } 5853 } 5854 // verify P-192 OOB 5855 if ((connection->classic_oob_c_192 != NULL)) { 5856 c_192 = connection->classic_oob_c_192; 5857 if (connection->classic_oob_r_192 != NULL) { 5858 r_192 = connection->classic_oob_r_192; 5859 } 5860 } 5861 5862 // assess security 5863 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 5864 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 5865 if (need_level_4 && !can_reach_level_4){ 5866 log_info("Level 4 required, but not possible -> abort"); 5867 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 5868 // send oob negative reply 5869 c_256 = NULL; 5870 c_192 = NULL; 5871 } 5872 5873 // Reply 5874 if (c_256 != zero) { 5875 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 5876 } else if (c_192 != zero){ 5877 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 5878 } else { 5879 hci_stack->classic_oob_con_handle = connection->con_handle; 5880 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 5881 } 5882 return true; 5883 } 5884 #endif 5885 5886 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 5887 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 5888 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 5889 return true; 5890 } 5891 5892 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 5893 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 5894 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 5895 return true; 5896 } 5897 5898 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 5899 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 5900 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 5901 return true; 5902 } 5903 5904 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 5905 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 5906 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 5907 connection->state = SENT_DISCONNECT; 5908 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5909 return true; 5910 } 5911 5912 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 5913 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 5914 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 5915 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 5916 return true; 5917 } 5918 5919 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 5920 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 5921 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 5922 return true; 5923 } 5924 5925 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 5926 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 5927 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 5928 return true; 5929 } 5930 5931 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 5932 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 5933 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 5934 return true; 5935 } 5936 5937 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 5938 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 5939 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 5940 return true; 5941 } 5942 5943 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 5944 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 5945 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 5946 return true; 5947 } 5948 #endif 5949 5950 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 5951 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 5952 #ifdef ENABLE_CLASSIC 5953 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 5954 #endif 5955 if (connection->state != SENT_DISCONNECT){ 5956 connection->state = SENT_DISCONNECT; 5957 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 5958 return true; 5959 } 5960 } 5961 5962 #ifdef ENABLE_CLASSIC 5963 uint16_t sniff_min_interval; 5964 switch (connection->sniff_min_interval){ 5965 case 0: 5966 break; 5967 case 0xffff: 5968 connection->sniff_min_interval = 0; 5969 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 5970 return true; 5971 default: 5972 sniff_min_interval = connection->sniff_min_interval; 5973 connection->sniff_min_interval = 0; 5974 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 5975 return true; 5976 } 5977 5978 if (connection->sniff_subrating_max_latency != 0xffff){ 5979 uint16_t max_latency = connection->sniff_subrating_max_latency; 5980 connection->sniff_subrating_max_latency = 0; 5981 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 5982 return true; 5983 } 5984 5985 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 5986 uint8_t service_type = (uint8_t) connection->qos_service_type; 5987 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 5988 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); 5989 return true; 5990 } 5991 5992 if (connection->request_role != HCI_ROLE_INVALID){ 5993 hci_role_t role = connection->request_role; 5994 connection->request_role = HCI_ROLE_INVALID; 5995 hci_send_cmd(&hci_switch_role_command, connection->address, role); 5996 return true; 5997 } 5998 #endif 5999 6000 if (connection->gap_connection_tasks != 0){ 6001 #ifdef ENABLE_CLASSIC 6002 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6003 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6004 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6005 return true; 6006 } 6007 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6008 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6009 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6010 return true; 6011 } 6012 #endif 6013 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6014 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6015 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6016 return true; 6017 } 6018 } 6019 6020 #ifdef ENABLE_BLE 6021 switch (connection->le_con_parameter_update_state){ 6022 // response to L2CAP CON PARAMETER UPDATE REQUEST 6023 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6024 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6025 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6026 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6027 0x0000, 0xffff); 6028 return true; 6029 case CON_PARAMETER_UPDATE_REPLY: 6030 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6031 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6032 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6033 0x0000, 0xffff); 6034 return true; 6035 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6036 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6037 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, ERROR_CODE_UNSUPPORTED_LMP_PARAMETER_VALUE_UNSUPPORTED_LL_PARAMETER_VALUE); 6038 return true; 6039 default: 6040 break; 6041 } 6042 if (connection->le_phy_update_all_phys != 0xffu){ 6043 uint8_t all_phys = connection->le_phy_update_all_phys; 6044 connection->le_phy_update_all_phys = 0xff; 6045 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); 6046 return true; 6047 } 6048 #endif 6049 } 6050 return false; 6051 } 6052 6053 static void hci_run(void){ 6054 6055 // stack state sub statemachines 6056 // halting needs to be called even if we cannot send command packet now 6057 switch (hci_stack->state) { 6058 case HCI_STATE_INITIALIZING: 6059 hci_initializing_run(); 6060 return; 6061 case HCI_STATE_HALTING: 6062 hci_halting_run(); 6063 return; 6064 case HCI_STATE_FALLING_ASLEEP: 6065 hci_falling_asleep_run(); 6066 return; 6067 default: 6068 break; 6069 } 6070 6071 bool done; 6072 6073 // send continuation fragments first, as they block the prepared packet buffer 6074 done = hci_run_acl_fragments(); 6075 if (done) return; 6076 6077 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6078 // send host num completed packets next as they don't require num_cmd_packets > 0 6079 if (!hci_can_send_comand_packet_transport()) return; 6080 if (hci_stack->host_completed_packets){ 6081 hci_host_num_completed_packets(); 6082 return; 6083 } 6084 #endif 6085 6086 if (!hci_can_send_command_packet_now()) return; 6087 6088 // global/non-connection oriented commands 6089 6090 6091 #ifdef ENABLE_CLASSIC 6092 // general gap classic 6093 done = hci_run_general_gap_classic(); 6094 if (done) return; 6095 #endif 6096 6097 #ifdef ENABLE_BLE 6098 // general gap le 6099 done = hci_run_general_gap_le(); 6100 if (done) return; 6101 #endif 6102 6103 // send pending HCI commands 6104 hci_run_general_pending_commands(); 6105 } 6106 6107 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6108 // house-keeping 6109 6110 #ifdef ENABLE_CLASSIC 6111 bd_addr_t addr; 6112 hci_connection_t * conn; 6113 #endif 6114 #ifdef ENABLE_LE_CENTRAL 6115 uint8_t initiator_filter_policy; 6116 #endif 6117 6118 uint16_t opcode = little_endian_read_16(packet, 0); 6119 switch (opcode) { 6120 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6121 hci_stack->loopback_mode = packet[3]; 6122 break; 6123 6124 #ifdef ENABLE_CLASSIC 6125 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6126 reverse_bd_addr(&packet[3], addr); 6127 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6128 6129 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6130 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6131 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6132 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6133 } 6134 6135 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6136 if (!conn) { 6137 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6138 if (!conn) { 6139 // notify client that alloc failed 6140 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6141 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6142 } 6143 conn->state = SEND_CREATE_CONNECTION; 6144 conn->role = HCI_ROLE_MASTER; 6145 } 6146 6147 log_info("conn state %u", conn->state); 6148 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6149 switch (conn->state) { 6150 // if connection active exists 6151 case OPEN: 6152 // and OPEN, emit connection complete command 6153 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6154 // packet not sent to controller 6155 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6156 case RECEIVED_DISCONNECTION_COMPLETE: 6157 // create connection triggered in disconnect complete event, let's do it now 6158 break; 6159 case SEND_CREATE_CONNECTION: 6160 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6161 if (hci_classic_operation_active()){ 6162 return ERROR_CODE_SUCCESS; 6163 } 6164 #endif 6165 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6166 break; 6167 default: 6168 // otherwise, just ignore as it is already in the open process 6169 // packet not sent to controller 6170 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6171 } 6172 conn->state = SENT_CREATE_CONNECTION; 6173 6174 // track outgoing connection 6175 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6176 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6177 break; 6178 6179 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6180 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6181 // setup_synchronous_connection? Voice setting at offset 22 6182 // TODO: compare to current setting if sco connection already active 6183 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6184 break; 6185 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6186 // accept_synchronous_connection? Voice setting at offset 18 6187 // TODO: compare to current setting if sco connection already active 6188 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6189 // track outgoing connection 6190 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6191 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6192 break; 6193 #endif 6194 #endif 6195 6196 #ifdef ENABLE_BLE 6197 #ifdef ENABLE_LE_CENTRAL 6198 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6199 // white list used? 6200 initiator_filter_policy = packet[7]; 6201 switch (initiator_filter_policy) { 6202 case 0: 6203 // whitelist not used 6204 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6205 break; 6206 case 1: 6207 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6208 break; 6209 default: 6210 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6211 break; 6212 } 6213 // track outgoing connection 6214 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6215 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6216 break; 6217 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6218 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6219 break; 6220 #endif 6221 #endif 6222 default: 6223 break; 6224 } 6225 6226 hci_stack->num_cmd_packets--; 6227 6228 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6229 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6230 if (err != 0){ 6231 return ERROR_CODE_HARDWARE_FAILURE; 6232 } 6233 return ERROR_CODE_SUCCESS; 6234 } 6235 6236 // disconnect because of security block 6237 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6238 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6239 if (!connection) return; 6240 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6241 } 6242 6243 6244 // Configure Secure Simple Pairing 6245 6246 #ifdef ENABLE_CLASSIC 6247 6248 // enable will enable SSP during init 6249 void gap_ssp_set_enable(int enable){ 6250 hci_stack->ssp_enable = enable; 6251 } 6252 6253 static int hci_local_ssp_activated(void){ 6254 return gap_ssp_supported() && hci_stack->ssp_enable; 6255 } 6256 6257 // if set, BTstack will respond to io capability request using authentication requirement 6258 void gap_ssp_set_io_capability(int io_capability){ 6259 hci_stack->ssp_io_capability = io_capability; 6260 } 6261 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6262 hci_stack->ssp_authentication_requirement = authentication_requirement; 6263 } 6264 6265 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6266 void gap_ssp_set_auto_accept(int auto_accept){ 6267 hci_stack->ssp_auto_accept = auto_accept; 6268 } 6269 6270 void gap_secure_connections_enable(bool enable){ 6271 hci_stack->secure_connections_enable = enable; 6272 } 6273 bool gap_secure_connections_active(void){ 6274 return hci_stack->secure_connections_active; 6275 } 6276 6277 #endif 6278 6279 // va_list part of hci_send_cmd 6280 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6281 if (!hci_can_send_command_packet_now()){ 6282 log_error("hci_send_cmd called but cannot send packet now"); 6283 return ERROR_CODE_COMMAND_DISALLOWED; 6284 } 6285 6286 // for HCI INITIALIZATION 6287 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6288 hci_stack->last_cmd_opcode = cmd->opcode; 6289 6290 hci_reserve_packet_buffer(); 6291 uint8_t * packet = hci_stack->hci_packet_buffer; 6292 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6293 uint8_t status = hci_send_cmd_packet(packet, size); 6294 6295 // release packet buffer on error or for synchronous transport implementations 6296 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6297 hci_release_packet_buffer(); 6298 hci_emit_transport_packet_sent(); 6299 } 6300 6301 return status; 6302 } 6303 6304 /** 6305 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6306 */ 6307 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6308 va_list argptr; 6309 va_start(argptr, cmd); 6310 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6311 va_end(argptr); 6312 return status; 6313 } 6314 6315 // Create various non-HCI events. 6316 // TODO: generalize, use table similar to hci_create_command 6317 6318 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6319 // dump packet 6320 if (dump) { 6321 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6322 } 6323 6324 // dispatch to all event handlers 6325 btstack_linked_list_iterator_t it; 6326 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6327 while (btstack_linked_list_iterator_has_next(&it)){ 6328 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6329 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6330 } 6331 } 6332 6333 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6334 if (!hci_stack->acl_packet_handler) return; 6335 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6336 } 6337 6338 #ifdef ENABLE_CLASSIC 6339 static void hci_notify_if_sco_can_send_now(void){ 6340 // notify SCO sender if waiting 6341 if (!hci_stack->sco_waiting_for_can_send_now) return; 6342 if (hci_can_send_sco_packet_now()){ 6343 hci_stack->sco_waiting_for_can_send_now = 0; 6344 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6345 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6346 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6347 } 6348 } 6349 6350 // parsing end emitting has been merged to reduce code size 6351 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6352 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6353 6354 uint8_t * eir_data; 6355 ad_context_t context; 6356 const uint8_t * name; 6357 uint8_t name_len; 6358 6359 if (size < 3) return; 6360 6361 int event_type = hci_event_packet_get_type(packet); 6362 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6363 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6364 6365 switch (event_type){ 6366 case HCI_EVENT_INQUIRY_RESULT: 6367 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6368 if (size != (3 + (num_responses * 14))) return; 6369 break; 6370 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6371 if (size != 257) return; 6372 if (num_responses != 1) return; 6373 break; 6374 default: 6375 return; 6376 } 6377 6378 // event[1] is set at the end 6379 int i; 6380 for (i=0; i<num_responses;i++){ 6381 memset(event, 0, sizeof(event)); 6382 event[0] = GAP_EVENT_INQUIRY_RESULT; 6383 uint8_t event_size = 27; // if name is not set by EIR 6384 6385 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6386 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6387 (void)memcpy(&event[9], 6388 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6389 3); // class of device 6390 (void)memcpy(&event[12], 6391 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6392 2); // clock offset 6393 6394 switch (event_type){ 6395 case HCI_EVENT_INQUIRY_RESULT: 6396 // 14,15,16,17 = 0, size 18 6397 break; 6398 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6399 event[14] = 1; 6400 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6401 // 16,17 = 0, size 18 6402 break; 6403 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6404 event[14] = 1; 6405 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6406 // EIR packets only contain a single inquiry response 6407 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6408 name = NULL; 6409 // Iterate over EIR data 6410 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6411 uint8_t data_type = ad_iterator_get_data_type(&context); 6412 uint8_t data_size = ad_iterator_get_data_len(&context); 6413 const uint8_t * data = ad_iterator_get_data(&context); 6414 // Prefer Complete Local Name over Shortened Local Name 6415 switch (data_type){ 6416 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6417 if (name) continue; 6418 /* fall through */ 6419 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6420 name = data; 6421 name_len = data_size; 6422 break; 6423 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6424 if (data_size != 8) break; 6425 event[16] = 1; 6426 memcpy(&event[17], data, 8); 6427 break; 6428 default: 6429 break; 6430 } 6431 } 6432 if (name){ 6433 event[25] = 1; 6434 // truncate name if needed 6435 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6436 event[26] = len; 6437 (void)memcpy(&event[27], name, len); 6438 event_size += len; 6439 } 6440 break; 6441 default: 6442 return; 6443 } 6444 event[1] = event_size - 2; 6445 hci_emit_event(event, event_size, 1); 6446 } 6447 } 6448 #endif 6449 6450 void hci_emit_state(void){ 6451 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6452 uint8_t event[3]; 6453 event[0] = BTSTACK_EVENT_STATE; 6454 event[1] = sizeof(event) - 2u; 6455 event[2] = hci_stack->state; 6456 hci_emit_event(event, sizeof(event), 1); 6457 } 6458 6459 #ifdef ENABLE_CLASSIC 6460 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6461 uint8_t event[13]; 6462 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6463 event[1] = sizeof(event) - 2; 6464 event[2] = status; 6465 little_endian_store_16(event, 3, con_handle); 6466 reverse_bd_addr(address, &event[5]); 6467 event[11] = 1; // ACL connection 6468 event[12] = 0; // encryption disabled 6469 hci_emit_event(event, sizeof(event), 1); 6470 } 6471 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 6472 if (disable_l2cap_timeouts) return; 6473 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 6474 uint8_t event[4]; 6475 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 6476 event[1] = sizeof(event) - 2; 6477 little_endian_store_16(event, 2, conn->con_handle); 6478 hci_emit_event(event, sizeof(event), 1); 6479 } 6480 #endif 6481 6482 #ifdef ENABLE_BLE 6483 #ifdef ENABLE_LE_CENTRAL 6484 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){ 6485 uint8_t event[21]; 6486 event[0] = HCI_EVENT_LE_META; 6487 event[1] = sizeof(event) - 2u; 6488 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 6489 event[3] = status; 6490 little_endian_store_16(event, 4, con_handle); 6491 event[6] = 0; // TODO: role 6492 event[7] = address_type; 6493 reverse_bd_addr(address, &event[8]); 6494 little_endian_store_16(event, 14, 0); // interval 6495 little_endian_store_16(event, 16, 0); // latency 6496 little_endian_store_16(event, 18, 0); // supervision timeout 6497 event[20] = 0; // master clock accuracy 6498 hci_emit_event(event, sizeof(event), 1); 6499 } 6500 #endif 6501 #endif 6502 6503 static void hci_emit_transport_packet_sent(void){ 6504 // notify upper stack that it might be possible to send again 6505 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 6506 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 6507 } 6508 6509 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 6510 uint8_t event[6]; 6511 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 6512 event[1] = sizeof(event) - 2u; 6513 event[2] = 0; // status = OK 6514 little_endian_store_16(event, 3, con_handle); 6515 event[5] = reason; 6516 hci_emit_event(event, sizeof(event), 1); 6517 } 6518 6519 static void hci_emit_nr_connections_changed(void){ 6520 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 6521 uint8_t event[3]; 6522 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 6523 event[1] = sizeof(event) - 2u; 6524 event[2] = nr_hci_connections(); 6525 hci_emit_event(event, sizeof(event), 1); 6526 } 6527 6528 static void hci_emit_hci_open_failed(void){ 6529 log_info("BTSTACK_EVENT_POWERON_FAILED"); 6530 uint8_t event[2]; 6531 event[0] = BTSTACK_EVENT_POWERON_FAILED; 6532 event[1] = sizeof(event) - 2u; 6533 hci_emit_event(event, sizeof(event), 1); 6534 } 6535 6536 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 6537 log_info("hci_emit_dedicated_bonding_result %u ", status); 6538 uint8_t event[9]; 6539 int pos = 0; 6540 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 6541 event[pos++] = sizeof(event) - 2u; 6542 event[pos++] = status; 6543 reverse_bd_addr(address, &event[pos]); 6544 hci_emit_event(event, sizeof(event), 1); 6545 } 6546 6547 6548 #ifdef ENABLE_CLASSIC 6549 6550 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 6551 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 6552 uint8_t event[5]; 6553 int pos = 0; 6554 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 6555 event[pos++] = sizeof(event) - 2; 6556 little_endian_store_16(event, 2, con_handle); 6557 pos += 2; 6558 event[pos++] = level; 6559 hci_emit_event(event, sizeof(event), 1); 6560 } 6561 6562 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 6563 if (!connection) return LEVEL_0; 6564 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 6565 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 6566 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 6567 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 6568 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 6569 // LEVEL 4 always requires 128 bit encrytion key size 6570 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 6571 security_level = LEVEL_3; 6572 } 6573 return security_level; 6574 } 6575 6576 static void hci_emit_discoverable_enabled(uint8_t enabled){ 6577 log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled); 6578 uint8_t event[3]; 6579 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 6580 event[1] = sizeof(event) - 2; 6581 event[2] = enabled; 6582 hci_emit_event(event, sizeof(event), 1); 6583 } 6584 6585 // query if remote side supports eSCO 6586 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 6587 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6588 if (!connection) return false; 6589 return (connection->remote_supported_features[0] & 1) != 0; 6590 } 6591 6592 static bool hci_ssp_supported(hci_connection_t * connection){ 6593 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 6594 return (connection->bonding_flags & mask) == mask; 6595 } 6596 6597 // query if remote side supports SSP 6598 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 6599 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6600 if (!connection) return false; 6601 return hci_ssp_supported(connection) ? 1 : 0; 6602 } 6603 6604 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 6605 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 6606 } 6607 6608 /** 6609 * Check if remote supported features query has completed 6610 */ 6611 bool hci_remote_features_available(hci_con_handle_t handle){ 6612 hci_connection_t * connection = hci_connection_for_handle(handle); 6613 if (!connection) return false; 6614 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 6615 } 6616 6617 /** 6618 * Trigger remote supported features query 6619 */ 6620 6621 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 6622 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 6623 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6624 } 6625 } 6626 6627 void hci_remote_features_query(hci_con_handle_t con_handle){ 6628 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6629 if (!connection) return; 6630 hci_trigger_remote_features_for_connection(connection); 6631 hci_run(); 6632 } 6633 6634 // GAP API 6635 /** 6636 * @bbrief enable/disable bonding. default is enabled 6637 * @praram enabled 6638 */ 6639 void gap_set_bondable_mode(int enable){ 6640 hci_stack->bondable = enable ? 1 : 0; 6641 } 6642 /** 6643 * @brief Get bondable mode. 6644 * @return 1 if bondable 6645 */ 6646 int gap_get_bondable_mode(void){ 6647 return hci_stack->bondable; 6648 } 6649 6650 /** 6651 * @brief map link keys to security levels 6652 */ 6653 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 6654 switch (link_key_type){ 6655 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6656 return LEVEL_4; 6657 case COMBINATION_KEY: 6658 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6659 return LEVEL_3; 6660 default: 6661 return LEVEL_2; 6662 } 6663 } 6664 6665 /** 6666 * @brief map link keys to secure connection yes/no 6667 */ 6668 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 6669 switch (link_key_type){ 6670 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6671 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6672 return true; 6673 default: 6674 return false; 6675 } 6676 } 6677 6678 /** 6679 * @brief map link keys to authenticated 6680 */ 6681 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 6682 switch (link_key_type){ 6683 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6684 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6685 return true; 6686 default: 6687 return false; 6688 } 6689 } 6690 6691 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 6692 log_info("gap_mitm_protection_required_for_security_level %u", level); 6693 return level > LEVEL_2; 6694 } 6695 6696 /** 6697 * @brief get current security level 6698 */ 6699 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 6700 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6701 if (!connection) return LEVEL_0; 6702 return gap_security_level_for_connection(connection); 6703 } 6704 6705 /** 6706 * @brief request connection to device to 6707 * @result GAP_AUTHENTICATION_RESULT 6708 */ 6709 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 6710 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6711 if (!connection){ 6712 hci_emit_security_level(con_handle, LEVEL_0); 6713 return; 6714 } 6715 6716 btstack_assert(hci_is_le_connection(connection) == false); 6717 6718 // 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) 6719 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 6720 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 6721 requested_level = LEVEL_4; 6722 } 6723 6724 gap_security_level_t current_level = gap_security_level(con_handle); 6725 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 6726 requested_level, connection->requested_security_level, current_level); 6727 6728 // authentication active if authentication request was sent or planned level > 0 6729 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 6730 if (authentication_active){ 6731 // authentication already active 6732 if (connection->requested_security_level < requested_level){ 6733 // increase requested level as new level is higher 6734 // TODO: handle re-authentication when done 6735 connection->requested_security_level = requested_level; 6736 } 6737 } else { 6738 // no request active, notify if security sufficient 6739 if (requested_level <= current_level){ 6740 hci_emit_security_level(con_handle, current_level); 6741 return; 6742 } 6743 6744 // store request 6745 connection->requested_security_level = requested_level; 6746 6747 // request remote features if not already active 6748 hci_remote_features_query(con_handle); 6749 6750 // start to authenticate connection 6751 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 6752 hci_run(); 6753 } 6754 } 6755 6756 /** 6757 * @brief start dedicated bonding with device. disconnect after bonding 6758 * @param device 6759 * @param request MITM protection 6760 * @result GAP_DEDICATED_BONDING_COMPLETE 6761 */ 6762 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 6763 6764 // create connection state machine 6765 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 6766 6767 if (!connection){ 6768 return BTSTACK_MEMORY_ALLOC_FAILED; 6769 } 6770 6771 // delete linkn key 6772 gap_drop_link_key_for_bd_addr(device); 6773 6774 // configure LEVEL_2/3, dedicated bonding 6775 connection->state = SEND_CREATE_CONNECTION; 6776 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 6777 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 6778 connection->bonding_flags = BONDING_DEDICATED; 6779 6780 // wait for GAP Security Result and send GAP Dedicated Bonding complete 6781 6782 // handle: connnection failure (connection complete != ok) 6783 // handle: authentication failure 6784 // handle: disconnect on done 6785 6786 hci_run(); 6787 6788 return 0; 6789 } 6790 6791 void gap_set_local_name(const char * local_name){ 6792 hci_stack->local_name = local_name; 6793 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 6794 // also update EIR if not set by user 6795 if (hci_stack->eir_data == NULL){ 6796 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 6797 } 6798 hci_run(); 6799 } 6800 #endif 6801 6802 6803 #ifdef ENABLE_BLE 6804 6805 #ifdef ENABLE_LE_CENTRAL 6806 void gap_start_scan(void){ 6807 hci_stack->le_scanning_enabled = true; 6808 hci_run(); 6809 } 6810 6811 void gap_stop_scan(void){ 6812 hci_stack->le_scanning_enabled = false; 6813 hci_run(); 6814 } 6815 6816 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 6817 hci_stack->le_scan_type = scan_type; 6818 hci_stack->le_scan_filter_policy = scanning_filter_policy; 6819 hci_stack->le_scan_interval = scan_interval; 6820 hci_stack->le_scan_window = scan_window; 6821 hci_stack->le_scanning_param_update = true; 6822 hci_run(); 6823 } 6824 6825 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 6826 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 6827 } 6828 6829 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 6830 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 6831 if (!conn){ 6832 // disallow if le connection is already outgoing 6833 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 6834 log_error("le connection already active"); 6835 return ERROR_CODE_COMMAND_DISALLOWED; 6836 } 6837 6838 log_info("gap_connect: no connection exists yet, creating context"); 6839 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 6840 if (!conn){ 6841 // notify client that alloc failed 6842 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6843 log_info("gap_connect: failed to alloc hci_connection_t"); 6844 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 6845 } 6846 6847 // set le connecting state 6848 if (hci_is_le_connection_type(addr_type)){ 6849 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 6850 } 6851 6852 conn->state = SEND_CREATE_CONNECTION; 6853 log_info("gap_connect: send create connection next"); 6854 hci_run(); 6855 return ERROR_CODE_SUCCESS; 6856 } 6857 6858 if (!hci_is_le_connection(conn) || 6859 (conn->state == SEND_CREATE_CONNECTION) || 6860 (conn->state == SENT_CREATE_CONNECTION)) { 6861 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 6862 log_error("gap_connect: classic connection or connect is already being created"); 6863 return GATT_CLIENT_IN_WRONG_STATE; 6864 } 6865 6866 // check if connection was just disconnected 6867 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 6868 log_info("gap_connect: send create connection (again)"); 6869 conn->state = SEND_CREATE_CONNECTION; 6870 hci_run(); 6871 return ERROR_CODE_SUCCESS; 6872 } 6873 6874 log_info("gap_connect: context exists with state %u", conn->state); 6875 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 6876 hci_run(); 6877 return ERROR_CODE_SUCCESS; 6878 } 6879 6880 // @assumption: only a single outgoing LE Connection exists 6881 static hci_connection_t * gap_get_outgoing_connection(void){ 6882 btstack_linked_item_t *it; 6883 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6884 hci_connection_t * conn = (hci_connection_t *) it; 6885 if (!hci_is_le_connection(conn)) continue; 6886 switch (conn->state){ 6887 case SEND_CREATE_CONNECTION: 6888 case SENT_CREATE_CONNECTION: 6889 case SENT_CANCEL_CONNECTION: 6890 return conn; 6891 default: 6892 break; 6893 }; 6894 } 6895 return NULL; 6896 } 6897 6898 uint8_t gap_connect_cancel(void){ 6899 hci_connection_t * conn = gap_get_outgoing_connection(); 6900 if (!conn) return 0; 6901 switch (conn->state){ 6902 case SEND_CREATE_CONNECTION: 6903 // skip sending create connection and emit event instead 6904 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 6905 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 6906 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 6907 btstack_memory_hci_connection_free( conn ); 6908 break; 6909 case SENT_CREATE_CONNECTION: 6910 // request to send cancel connection 6911 conn->state = SEND_CANCEL_CONNECTION; 6912 hci_run(); 6913 break; 6914 default: 6915 break; 6916 } 6917 return 0; 6918 } 6919 6920 /** 6921 * @brief Set connection parameters for outgoing connections 6922 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 6923 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 6924 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 6925 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 6926 * @param conn_latency, default: 4 6927 * @param supervision_timeout (unit: 10ms), default: 720 ms 6928 * @param min_ce_length (unit: 0.625ms), default: 10 ms 6929 * @param max_ce_length (unit: 0.625ms), default: 30 ms 6930 */ 6931 6932 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 6933 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 6934 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 6935 hci_stack->le_connection_scan_interval = conn_scan_interval; 6936 hci_stack->le_connection_scan_window = conn_scan_window; 6937 hci_stack->le_connection_interval_min = conn_interval_min; 6938 hci_stack->le_connection_interval_max = conn_interval_max; 6939 hci_stack->le_connection_latency = conn_latency; 6940 hci_stack->le_supervision_timeout = supervision_timeout; 6941 hci_stack->le_minimum_ce_length = min_ce_length; 6942 hci_stack->le_maximum_ce_length = max_ce_length; 6943 } 6944 #endif 6945 6946 /** 6947 * @brief Updates the connection parameters for a given LE connection 6948 * @param handle 6949 * @param conn_interval_min (unit: 1.25ms) 6950 * @param conn_interval_max (unit: 1.25ms) 6951 * @param conn_latency 6952 * @param supervision_timeout (unit: 10ms) 6953 * @return 0 if ok 6954 */ 6955 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 6956 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 6957 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6958 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6959 connection->le_conn_interval_min = conn_interval_min; 6960 connection->le_conn_interval_max = conn_interval_max; 6961 connection->le_conn_latency = conn_latency; 6962 connection->le_supervision_timeout = supervision_timeout; 6963 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 6964 hci_run(); 6965 return 0; 6966 } 6967 6968 /** 6969 * @brief Request an update of the connection parameter for a given LE connection 6970 * @param handle 6971 * @param conn_interval_min (unit: 1.25ms) 6972 * @param conn_interval_max (unit: 1.25ms) 6973 * @param conn_latency 6974 * @param supervision_timeout (unit: 10ms) 6975 * @return 0 if ok 6976 */ 6977 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 6978 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 6979 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6980 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6981 connection->le_conn_interval_min = conn_interval_min; 6982 connection->le_conn_interval_max = conn_interval_max; 6983 connection->le_conn_latency = conn_latency; 6984 connection->le_supervision_timeout = supervision_timeout; 6985 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 6986 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 6987 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 6988 return 0; 6989 } 6990 6991 #ifdef ENABLE_LE_PERIPHERAL 6992 6993 /** 6994 * @brief Set Advertisement Data 6995 * @param advertising_data_length 6996 * @param advertising_data (max 31 octets) 6997 * @note data is not copied, pointer has to stay valid 6998 */ 6999 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7000 hci_stack->le_advertisements_data_len = advertising_data_length; 7001 hci_stack->le_advertisements_data = advertising_data; 7002 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7003 hci_run(); 7004 } 7005 7006 /** 7007 * @brief Set Scan Response Data 7008 * @param advertising_data_length 7009 * @param advertising_data (max 31 octets) 7010 * @note data is not copied, pointer has to stay valid 7011 */ 7012 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7013 hci_stack->le_scan_response_data_len = scan_response_data_length; 7014 hci_stack->le_scan_response_data = scan_response_data; 7015 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7016 hci_run(); 7017 } 7018 7019 /** 7020 * @brief Set Advertisement Parameters 7021 * @param adv_int_min 7022 * @param adv_int_max 7023 * @param adv_type 7024 * @param direct_address_type 7025 * @param direct_address 7026 * @param channel_map 7027 * @param filter_policy 7028 * 7029 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7030 */ 7031 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7032 uint8_t direct_address_typ, bd_addr_t direct_address, 7033 uint8_t channel_map, uint8_t filter_policy) { 7034 7035 hci_stack->le_advertisements_interval_min = adv_int_min; 7036 hci_stack->le_advertisements_interval_max = adv_int_max; 7037 hci_stack->le_advertisements_type = adv_type; 7038 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7039 hci_stack->le_advertisements_channel_map = channel_map; 7040 hci_stack->le_advertisements_filter_policy = filter_policy; 7041 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7042 6); 7043 7044 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7045 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7046 hci_run(); 7047 } 7048 7049 /** 7050 * @brief Enable/Disable Advertisements 7051 * @param enabled 7052 */ 7053 void gap_advertisements_enable(int enabled){ 7054 if (enabled == 0){ 7055 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7056 } else { 7057 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7058 } 7059 hci_update_advertisements_enabled_for_current_roles(); 7060 hci_run(); 7061 } 7062 7063 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7064 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7065 btstack_linked_list_iterator_t it; 7066 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7067 while (btstack_linked_list_iterator_has_next(&it)){ 7068 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7069 if ( item->advertising_handle == advertising_handle ) { 7070 return item; 7071 } 7072 } 7073 return NULL; 7074 } 7075 7076 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7077 // find free advertisement handle 7078 uint8_t advertisement_handle; 7079 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7080 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7081 } 7082 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7083 // clear 7084 memset(storage, 0, sizeof(le_advertising_set_t)); 7085 // copy params 7086 storage->advertising_handle = advertisement_handle; 7087 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7088 // add to list 7089 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7090 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7091 *out_advertising_handle = advertisement_handle; 7092 // set tasks and start 7093 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7094 hci_run(); 7095 return ERROR_CODE_SUCCESS; 7096 } 7097 7098 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7099 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7100 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7101 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7102 // set tasks and start 7103 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7104 hci_run(); 7105 return ERROR_CODE_SUCCESS; 7106 } 7107 7108 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7109 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7110 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7111 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7112 return ERROR_CODE_SUCCESS; 7113 } 7114 7115 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7116 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7117 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7118 memcpy(advertising_set->random_address, random_address, 6); 7119 // set tasks and start 7120 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7121 hci_run(); 7122 return ERROR_CODE_SUCCESS; 7123 } 7124 7125 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7126 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7127 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7128 advertising_set->adv_data = advertising_data; 7129 advertising_set->adv_data_len = advertising_data_length; 7130 // set tasks and start 7131 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7132 hci_run(); 7133 return ERROR_CODE_SUCCESS; 7134 } 7135 7136 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){ 7137 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7138 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7139 advertising_set->scan_data = scan_response_data; 7140 advertising_set->scan_data_len = scan_response_data_length; 7141 // set tasks and start 7142 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7143 hci_run(); 7144 return ERROR_CODE_SUCCESS; 7145 } 7146 7147 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7148 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7149 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7150 advertising_set->enable_timeout = timeout; 7151 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7152 // set tasks and start 7153 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7154 hci_run(); 7155 return ERROR_CODE_SUCCESS; 7156 } 7157 7158 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7159 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7160 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7161 // set tasks and start 7162 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7163 hci_run(); 7164 return ERROR_CODE_SUCCESS; 7165 } 7166 7167 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7168 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7169 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7170 // set tasks and start 7171 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7172 hci_run(); 7173 return ERROR_CODE_SUCCESS; 7174 } 7175 7176 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7177 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7178 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7179 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7180 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7181 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7182 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7183 // set tasks and start 7184 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7185 hci_run(); 7186 return ERROR_CODE_SUCCESS; 7187 } 7188 7189 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7190 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7191 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7192 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7193 return ERROR_CODE_SUCCESS; 7194 } 7195 7196 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7197 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7198 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7199 advertising_set->periodic_data = periodic_data; 7200 advertising_set->periodic_data_len = periodic_data_length; 7201 // set tasks and start 7202 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7203 hci_run(); 7204 return ERROR_CODE_SUCCESS; 7205 } 7206 7207 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7208 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7209 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7210 // set tasks and start 7211 advertising_set->periodic_include_adi = include_adi; 7212 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7213 hci_run(); 7214 return ERROR_CODE_SUCCESS; 7215 } 7216 7217 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7218 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7219 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7220 // set tasks and start 7221 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7222 hci_run(); 7223 return ERROR_CODE_SUCCESS; 7224 } 7225 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7226 7227 #endif 7228 7229 #endif 7230 7231 void hci_le_set_own_address_type(uint8_t own_address_type){ 7232 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7233 if (own_address_type == hci_stack->le_own_addr_type) return; 7234 hci_stack->le_own_addr_type = own_address_type; 7235 7236 #ifdef ENABLE_LE_PERIPHERAL 7237 // update advertisement parameters, too 7238 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7239 hci_run(); 7240 #endif 7241 #ifdef ENABLE_LE_CENTRAL 7242 // note: we don't update scan parameters or modify ongoing connection attempts 7243 #endif 7244 } 7245 7246 void hci_le_random_address_set(const bd_addr_t random_address){ 7247 memcpy(hci_stack->le_random_address, random_address, 6); 7248 hci_stack->le_random_address_set = true; 7249 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7250 hci_run(); 7251 } 7252 7253 #endif 7254 7255 uint8_t gap_disconnect(hci_con_handle_t handle){ 7256 hci_connection_t * conn = hci_connection_for_handle(handle); 7257 if (!conn){ 7258 hci_emit_disconnection_complete(handle, 0); 7259 return 0; 7260 } 7261 // ignore if already disconnected 7262 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7263 return 0; 7264 } 7265 conn->state = SEND_DISCONNECT; 7266 hci_run(); 7267 return 0; 7268 } 7269 7270 int gap_read_rssi(hci_con_handle_t con_handle){ 7271 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7272 if (hci_connection == NULL) return 0; 7273 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7274 hci_run(); 7275 return 1; 7276 } 7277 7278 /** 7279 * @brief Get connection type 7280 * @param con_handle 7281 * @result connection_type 7282 */ 7283 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7284 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7285 if (!conn) return GAP_CONNECTION_INVALID; 7286 switch (conn->address_type){ 7287 case BD_ADDR_TYPE_LE_PUBLIC: 7288 case BD_ADDR_TYPE_LE_RANDOM: 7289 return GAP_CONNECTION_LE; 7290 case BD_ADDR_TYPE_SCO: 7291 return GAP_CONNECTION_SCO; 7292 case BD_ADDR_TYPE_ACL: 7293 return GAP_CONNECTION_ACL; 7294 default: 7295 return GAP_CONNECTION_INVALID; 7296 } 7297 } 7298 7299 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7300 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7301 if (!conn) return HCI_ROLE_INVALID; 7302 return (hci_role_t) conn->role; 7303 } 7304 7305 7306 #ifdef ENABLE_CLASSIC 7307 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7308 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7309 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7310 conn->request_role = role; 7311 hci_run(); 7312 return ERROR_CODE_SUCCESS; 7313 } 7314 #endif 7315 7316 #ifdef ENABLE_BLE 7317 7318 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){ 7319 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7320 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7321 7322 conn->le_phy_update_all_phys = all_phys; 7323 conn->le_phy_update_tx_phys = tx_phys; 7324 conn->le_phy_update_rx_phys = rx_phys; 7325 conn->le_phy_update_phy_options = phy_options; 7326 7327 hci_run(); 7328 7329 return 0; 7330 } 7331 7332 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7333 // check if already in list 7334 btstack_linked_list_iterator_t it; 7335 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7336 while (btstack_linked_list_iterator_has_next(&it)) { 7337 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7338 if (entry->address_type != address_type) { 7339 continue; 7340 } 7341 if (memcmp(entry->address, address, 6) != 0) { 7342 continue; 7343 } 7344 // disallow if already scheduled to add 7345 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7346 return ERROR_CODE_COMMAND_DISALLOWED; 7347 } 7348 // still on controller, but scheduled to remove -> re-add 7349 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7350 return ERROR_CODE_SUCCESS; 7351 } 7352 // alloc and add to list 7353 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7354 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7355 entry->address_type = address_type; 7356 (void)memcpy(entry->address, address, 6); 7357 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7358 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7359 return ERROR_CODE_SUCCESS; 7360 } 7361 7362 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7363 btstack_linked_list_iterator_t it; 7364 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7365 while (btstack_linked_list_iterator_has_next(&it)){ 7366 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7367 if (entry->address_type != address_type) { 7368 continue; 7369 } 7370 if (memcmp(entry->address, address, 6) != 0) { 7371 continue; 7372 } 7373 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7374 // remove from controller if already present 7375 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7376 } else { 7377 // directly remove entry from whitelist 7378 btstack_linked_list_iterator_remove(&it); 7379 btstack_memory_whitelist_entry_free(entry); 7380 } 7381 return ERROR_CODE_SUCCESS; 7382 } 7383 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7384 } 7385 7386 static void hci_whitelist_clear(void){ 7387 btstack_linked_list_iterator_t it; 7388 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7389 while (btstack_linked_list_iterator_has_next(&it)){ 7390 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7391 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7392 // remove from controller if already present 7393 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7394 continue; 7395 } 7396 // directly remove entry from whitelist 7397 btstack_linked_list_iterator_remove(&it); 7398 btstack_memory_whitelist_entry_free(entry); 7399 } 7400 } 7401 7402 // free all entries unconditionally 7403 static void hci_whitelist_free(void){ 7404 btstack_linked_list_iterator_t lit; 7405 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7406 while (btstack_linked_list_iterator_has_next(&lit)){ 7407 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7408 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7409 btstack_memory_whitelist_entry_free(entry); 7410 } 7411 } 7412 7413 /** 7414 * @brief Clear Whitelist 7415 * @return 0 if ok 7416 */ 7417 uint8_t gap_whitelist_clear(void){ 7418 hci_whitelist_clear(); 7419 hci_run(); 7420 return ERROR_CODE_SUCCESS; 7421 } 7422 7423 /** 7424 * @brief Add Device to Whitelist 7425 * @param address_typ 7426 * @param address 7427 * @return 0 if ok 7428 */ 7429 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7430 uint8_t status = hci_whitelist_add(address_type, address); 7431 if (status){ 7432 return status; 7433 } 7434 hci_run(); 7435 return ERROR_CODE_SUCCESS; 7436 } 7437 7438 /** 7439 * @brief Remove Device from Whitelist 7440 * @param address_typ 7441 * @param address 7442 * @return 0 if ok 7443 */ 7444 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7445 uint8_t status = hci_whitelist_remove(address_type, address); 7446 if (status){ 7447 return status; 7448 } 7449 hci_run(); 7450 return ERROR_CODE_SUCCESS; 7451 } 7452 7453 #ifdef ENABLE_LE_CENTRAL 7454 /** 7455 * @brief Connect with Whitelist 7456 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 7457 * @return - if ok 7458 */ 7459 uint8_t gap_connect_with_whitelist(void){ 7460 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7461 return ERROR_CODE_COMMAND_DISALLOWED; 7462 } 7463 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7464 hci_run(); 7465 return ERROR_CODE_SUCCESS; 7466 } 7467 7468 /** 7469 * @brief Auto Connection Establishment - Start Connecting to device 7470 * @param address_typ 7471 * @param address 7472 * @return 0 if ok 7473 */ 7474 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 7475 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7476 return ERROR_CODE_COMMAND_DISALLOWED; 7477 } 7478 7479 uint8_t status = hci_whitelist_add(address_type, address); 7480 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 7481 return status; 7482 } 7483 7484 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7485 7486 hci_run(); 7487 return ERROR_CODE_SUCCESS; 7488 } 7489 7490 /** 7491 * @brief Auto Connection Establishment - Stop Connecting to device 7492 * @param address_typ 7493 * @param address 7494 * @return 0 if ok 7495 */ 7496 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 7497 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7498 return ERROR_CODE_COMMAND_DISALLOWED; 7499 } 7500 7501 hci_whitelist_remove(address_type, address); 7502 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 7503 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7504 } 7505 hci_run(); 7506 return 0; 7507 } 7508 7509 /** 7510 * @brief Auto Connection Establishment - Stop everything 7511 * @note Convenience function to stop all active auto connection attempts 7512 */ 7513 uint8_t gap_auto_connection_stop_all(void){ 7514 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 7515 return ERROR_CODE_COMMAND_DISALLOWED; 7516 } 7517 hci_whitelist_clear(); 7518 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7519 hci_run(); 7520 return ERROR_CODE_SUCCESS; 7521 } 7522 7523 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 7524 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7525 if (!conn) return 0; 7526 return conn->le_connection_interval; 7527 } 7528 #endif 7529 #endif 7530 7531 #ifdef ENABLE_CLASSIC 7532 /** 7533 * @brief Set Extended Inquiry Response data 7534 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 7535 * @note has to be done before stack starts up 7536 */ 7537 void gap_set_extended_inquiry_response(const uint8_t * data){ 7538 hci_stack->eir_data = data; 7539 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7540 hci_run(); 7541 } 7542 7543 /** 7544 * @brief Start GAP Classic Inquiry 7545 * @param duration in 1.28s units 7546 * @return 0 if ok 7547 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 7548 */ 7549 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 7550 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7551 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7552 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 7553 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7554 } 7555 hci_stack->inquiry_state = duration_in_1280ms_units; 7556 hci_stack->inquiry_max_period_length = 0; 7557 hci_stack->inquiry_min_period_length = 0; 7558 hci_run(); 7559 return 0; 7560 } 7561 7562 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 7563 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7564 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7565 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7566 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7567 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7568 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7569 7570 hci_stack->inquiry_state = duration; 7571 hci_stack->inquiry_max_period_length = max_period_length; 7572 hci_stack->inquiry_min_period_length = min_period_length; 7573 hci_run(); 7574 return 0; 7575 } 7576 7577 /** 7578 * @brief Stop GAP Classic Inquiry 7579 * @return 0 if ok 7580 */ 7581 int gap_inquiry_stop(void){ 7582 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 7583 // emit inquiry complete event, before it even started 7584 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 7585 hci_emit_event(event, sizeof(event), 1); 7586 return 0; 7587 } 7588 switch (hci_stack->inquiry_state){ 7589 case GAP_INQUIRY_STATE_ACTIVE: 7590 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 7591 hci_run(); 7592 return ERROR_CODE_SUCCESS; 7593 case GAP_INQUIRY_STATE_PERIODIC: 7594 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 7595 hci_run(); 7596 return ERROR_CODE_SUCCESS; 7597 default: 7598 return ERROR_CODE_COMMAND_DISALLOWED; 7599 } 7600 } 7601 7602 void gap_inquiry_set_lap(uint32_t lap){ 7603 hci_stack->inquiry_lap = lap; 7604 } 7605 7606 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 7607 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 7608 hci_stack->inquiry_scan_window = inquiry_scan_window; 7609 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 7610 hci_run(); 7611 } 7612 7613 7614 /** 7615 * @brief Remote Name Request 7616 * @param addr 7617 * @param page_scan_repetition_mode 7618 * @param clock_offset only used when bit 15 is set 7619 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 7620 */ 7621 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 7622 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7623 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 7624 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 7625 hci_stack->remote_name_clock_offset = clock_offset; 7626 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 7627 hci_run(); 7628 return 0; 7629 } 7630 7631 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 7632 hci_stack->gap_pairing_state = state; 7633 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 7634 hci_run(); 7635 return 0; 7636 } 7637 7638 /** 7639 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 7640 * @param addr 7641 * @param pin_data 7642 * @param pin_len 7643 * @return 0 if ok 7644 */ 7645 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 7646 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7647 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 7648 hci_stack->gap_pairing_pin_len = pin_len; 7649 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 7650 } 7651 7652 /** 7653 * @brief Legacy Pairing Pin Code Response 7654 * @param addr 7655 * @param pin 7656 * @return 0 if ok 7657 */ 7658 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 7659 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, strlen(pin)); 7660 } 7661 7662 /** 7663 * @brief Abort Legacy Pairing 7664 * @param addr 7665 * @param pin 7666 * @return 0 if ok 7667 */ 7668 int gap_pin_code_negative(bd_addr_t addr){ 7669 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7670 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 7671 } 7672 7673 /** 7674 * @brief SSP Passkey Response 7675 * @param addr 7676 * @param passkey 7677 * @return 0 if ok 7678 */ 7679 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 7680 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7681 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 7682 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 7683 } 7684 7685 /** 7686 * @brief Abort SSP Passkey Entry/Pairing 7687 * @param addr 7688 * @param pin 7689 * @return 0 if ok 7690 */ 7691 int gap_ssp_passkey_negative(const bd_addr_t addr){ 7692 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7693 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 7694 } 7695 7696 /** 7697 * @brief Accept SSP Numeric Comparison 7698 * @param addr 7699 * @param passkey 7700 * @return 0 if ok 7701 */ 7702 int gap_ssp_confirmation_response(const bd_addr_t addr){ 7703 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7704 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 7705 } 7706 7707 /** 7708 * @brief Abort SSP Numeric Comparison/Pairing 7709 * @param addr 7710 * @param pin 7711 * @return 0 if ok 7712 */ 7713 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 7714 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7715 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 7716 } 7717 7718 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 7719 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 7720 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7721 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7722 connectionSetAuthenticationFlags(conn, flag); 7723 hci_run(); 7724 return ERROR_CODE_SUCCESS; 7725 } 7726 #endif 7727 7728 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 7729 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 7730 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7731 } 7732 7733 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 7734 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7735 } 7736 #endif 7737 7738 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7739 /** 7740 * @brief Report Remote OOB Data 7741 * @param bd_addr 7742 * @param c_192 Simple Pairing Hash C derived from P-192 public key 7743 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 7744 * @param c_256 Simple Pairing Hash C derived from P-256 public key 7745 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 7746 */ 7747 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){ 7748 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7749 if (connection == NULL) { 7750 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7751 } 7752 connection->classic_oob_c_192 = c_192; 7753 connection->classic_oob_r_192 = r_192; 7754 7755 // ignore P-256 if not supported by us 7756 if (hci_stack->secure_connections_active){ 7757 connection->classic_oob_c_256 = c_256; 7758 connection->classic_oob_r_256 = r_256; 7759 } 7760 7761 return ERROR_CODE_SUCCESS; 7762 } 7763 /** 7764 * @brief Generate new OOB data 7765 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 7766 */ 7767 void gap_ssp_generate_oob_data(void){ 7768 hci_stack->classic_read_local_oob_data = true; 7769 hci_run(); 7770 } 7771 7772 #endif 7773 7774 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 7775 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 7776 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7777 if (connection == NULL) { 7778 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7779 } 7780 7781 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 7782 connection->link_key_type = type; 7783 7784 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7785 } 7786 7787 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 7788 /** 7789 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 7790 * @param inquiry_mode see bluetooth_defines.h 7791 */ 7792 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 7793 hci_stack->inquiry_mode = inquiry_mode; 7794 } 7795 7796 /** 7797 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 7798 */ 7799 void hci_set_sco_voice_setting(uint16_t voice_setting){ 7800 hci_stack->sco_voice_setting = voice_setting; 7801 } 7802 7803 /** 7804 * @brief Get SCO Voice Setting 7805 * @return current voice setting 7806 */ 7807 uint16_t hci_get_sco_voice_setting(void){ 7808 return hci_stack->sco_voice_setting; 7809 } 7810 7811 static int hci_have_usb_transport(void){ 7812 if (!hci_stack->hci_transport) return 0; 7813 const char * transport_name = hci_stack->hci_transport->name; 7814 if (!transport_name) return 0; 7815 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 7816 } 7817 7818 /** @brief Get SCO packet length for current SCO Voice setting 7819 * @note Using SCO packets of the exact length is required for USB transfer 7820 * @return Length of SCO packets in bytes (not audio frames) 7821 */ 7822 uint16_t hci_get_sco_packet_length(void){ 7823 uint16_t sco_packet_length = 0; 7824 7825 #ifdef ENABLE_SCO_OVER_HCI 7826 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 7827 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 7828 7829 if (hci_have_usb_transport()){ 7830 // see Core Spec for H2 USB Transfer. 7831 // 3 byte SCO header + 24 bytes per connection 7832 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 7833 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 7834 } else { 7835 // 3 byte SCO header + SCO packet size over the air (60 bytes) 7836 sco_packet_length = 3 + 60 * multiplier; 7837 // assert that it still fits inside an SCO buffer 7838 if (sco_packet_length > hci_stack->sco_data_packet_length){ 7839 sco_packet_length = 3 + 60; 7840 } 7841 } 7842 #endif 7843 7844 #ifdef HAVE_SCO_TRANSPORT 7845 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 7846 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 7847 sco_packet_length = 3 + 60 * multiplier; 7848 #endif 7849 return sco_packet_length; 7850 } 7851 7852 /** 7853 * @brief Sets the master/slave policy 7854 * @param policy (0: attempt to become master, 1: let connecting device decide) 7855 */ 7856 void hci_set_master_slave_policy(uint8_t policy){ 7857 hci_stack->master_slave_policy = policy; 7858 } 7859 7860 #endif 7861 7862 HCI_STATE hci_get_state(void){ 7863 return hci_stack->state; 7864 } 7865 7866 #ifdef ENABLE_CLASSIC 7867 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 7868 hci_stack->gap_classic_accept_callback = accept_callback; 7869 } 7870 #endif 7871 7872 /** 7873 * @brief Set callback for Bluetooth Hardware Error 7874 */ 7875 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 7876 hci_stack->hardware_error_callback = fn; 7877 } 7878 7879 void hci_disconnect_all(void){ 7880 btstack_linked_list_iterator_t it; 7881 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 7882 while (btstack_linked_list_iterator_has_next(&it)){ 7883 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 7884 if (con->state == SENT_DISCONNECT) continue; 7885 con->state = SEND_DISCONNECT; 7886 } 7887 hci_run(); 7888 } 7889 7890 uint16_t hci_get_manufacturer(void){ 7891 return hci_stack->manufacturer; 7892 } 7893 7894 #ifdef ENABLE_BLE 7895 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 7896 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 7897 if (!hci_con) return NULL; 7898 return &hci_con->sm_connection; 7899 } 7900 7901 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 7902 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 7903 #endif 7904 7905 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 7906 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7907 if (hci_connection == NULL) return 0; 7908 if (hci_is_le_connection(hci_connection)){ 7909 #ifdef ENABLE_BLE 7910 sm_connection_t * sm_conn = &hci_connection->sm_connection; 7911 if (sm_conn->sm_connection_encrypted) { 7912 return sm_conn->sm_actual_encryption_key_size; 7913 } 7914 #endif 7915 } else { 7916 #ifdef ENABLE_CLASSIC 7917 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 7918 return hci_connection->encryption_key_size; 7919 } 7920 #endif 7921 } 7922 return 0; 7923 } 7924 7925 bool gap_authenticated(hci_con_handle_t con_handle){ 7926 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7927 if (hci_connection == NULL) return false; 7928 7929 switch (hci_connection->address_type){ 7930 #ifdef ENABLE_BLE 7931 case BD_ADDR_TYPE_LE_PUBLIC: 7932 case BD_ADDR_TYPE_LE_RANDOM: 7933 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 7934 return hci_connection->sm_connection.sm_connection_authenticated != 0; 7935 #endif 7936 #ifdef ENABLE_CLASSIC 7937 case BD_ADDR_TYPE_SCO: 7938 case BD_ADDR_TYPE_ACL: 7939 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 7940 #endif 7941 default: 7942 return false; 7943 } 7944 } 7945 7946 bool gap_secure_connection(hci_con_handle_t con_handle){ 7947 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7948 if (hci_connection == NULL) return 0; 7949 7950 switch (hci_connection->address_type){ 7951 #ifdef ENABLE_BLE 7952 case BD_ADDR_TYPE_LE_PUBLIC: 7953 case BD_ADDR_TYPE_LE_RANDOM: 7954 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 7955 return hci_connection->sm_connection.sm_connection_sc != 0; 7956 #endif 7957 #ifdef ENABLE_CLASSIC 7958 case BD_ADDR_TYPE_SCO: 7959 case BD_ADDR_TYPE_ACL: 7960 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 7961 #endif 7962 default: 7963 return false; 7964 } 7965 } 7966 7967 bool gap_bonded(hci_con_handle_t con_handle){ 7968 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7969 if (hci_connection == NULL) return 0; 7970 7971 #ifdef ENABLE_CLASSIC 7972 link_key_t link_key; 7973 link_key_type_t link_key_type; 7974 #endif 7975 switch (hci_connection->address_type){ 7976 #ifdef ENABLE_BLE 7977 case BD_ADDR_TYPE_LE_PUBLIC: 7978 case BD_ADDR_TYPE_LE_RANDOM: 7979 return hci_connection->sm_connection.sm_le_db_index >= 0; 7980 #endif 7981 #ifdef ENABLE_CLASSIC 7982 case BD_ADDR_TYPE_SCO: 7983 case BD_ADDR_TYPE_ACL: 7984 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 7985 #endif 7986 default: 7987 return false; 7988 } 7989 } 7990 7991 #ifdef ENABLE_BLE 7992 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 7993 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 7994 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 7995 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 7996 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 7997 return sm_conn->sm_connection_authorization_state; 7998 } 7999 #endif 8000 8001 #ifdef ENABLE_CLASSIC 8002 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){ 8003 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8004 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8005 conn->sniff_min_interval = sniff_min_interval; 8006 conn->sniff_max_interval = sniff_max_interval; 8007 conn->sniff_attempt = sniff_attempt; 8008 conn->sniff_timeout = sniff_timeout; 8009 hci_run(); 8010 return 0; 8011 } 8012 8013 /** 8014 * @brief Exit Sniff mode 8015 * @param con_handle 8016 @ @return 0 if ok 8017 */ 8018 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8019 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8020 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8021 conn->sniff_min_interval = 0xffff; 8022 hci_run(); 8023 return 0; 8024 } 8025 8026 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){ 8027 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8028 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8029 conn->sniff_subrating_max_latency = max_latency; 8030 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8031 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8032 hci_run(); 8033 return ERROR_CODE_SUCCESS; 8034 } 8035 8036 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){ 8037 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8038 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8039 conn->qos_service_type = service_type; 8040 conn->qos_token_rate = token_rate; 8041 conn->qos_peak_bandwidth = peak_bandwidth; 8042 conn->qos_latency = latency; 8043 conn->qos_delay_variation = delay_variation; 8044 hci_run(); 8045 return ERROR_CODE_SUCCESS; 8046 } 8047 8048 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8049 hci_stack->new_page_scan_interval = page_scan_interval; 8050 hci_stack->new_page_scan_window = page_scan_window; 8051 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8052 hci_run(); 8053 } 8054 8055 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8056 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8057 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8058 hci_run(); 8059 } 8060 8061 void gap_set_page_timeout(uint16_t page_timeout){ 8062 hci_stack->page_timeout = page_timeout; 8063 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8064 hci_run(); 8065 } 8066 8067 #endif 8068 8069 void hci_halting_defer(void){ 8070 if (hci_stack->state != HCI_STATE_HALTING) return; 8071 switch (hci_stack->substate){ 8072 case HCI_HALTING_READY_FOR_CLOSE: 8073 hci_stack->substate = HCI_HALTING_DEFER_CLOSE; 8074 break; 8075 default: 8076 break; 8077 } 8078 } 8079 8080 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8081 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8082 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8083 if (le_device_db_index >= le_device_db_max_count()) return; 8084 uint8_t offset = le_device_db_index >> 3; 8085 uint8_t mask = 1 << (le_device_db_index & 7); 8086 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8087 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8088 // note: go back to remove entries, otherwise, a remove + add will skip the add 8089 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8090 } 8091 } 8092 8093 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8094 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8095 if (le_device_db_index >= le_device_db_max_count()) return; 8096 uint8_t offset = le_device_db_index >> 3; 8097 uint8_t mask = 1 << (le_device_db_index & 7); 8098 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8099 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8100 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8101 } 8102 } 8103 8104 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8105 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8106 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8107 } 8108 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8109 // restart le resolving list update 8110 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8111 } 8112 return ERROR_CODE_SUCCESS; 8113 } 8114 #endif 8115 8116 #ifdef ENABLE_BLE 8117 #ifdef ENABLE_LE_CENTRAL 8118 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8119 8120 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8121 // check if already in list 8122 btstack_linked_list_iterator_t it; 8123 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8124 while (btstack_linked_list_iterator_has_next(&it)) { 8125 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8126 if (entry->sid != advertising_sid) { 8127 continue; 8128 } 8129 if (entry->address_type != address_type) { 8130 continue; 8131 } 8132 if (memcmp(entry->address, address, 6) != 0) { 8133 continue; 8134 } 8135 // disallow if already scheduled to add 8136 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8137 return ERROR_CODE_COMMAND_DISALLOWED; 8138 } 8139 // still on controller, but scheduled to remove -> re-add 8140 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8141 return ERROR_CODE_SUCCESS; 8142 } 8143 // alloc and add to list 8144 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8145 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8146 entry->sid = advertising_sid; 8147 entry->address_type = address_type; 8148 (void)memcpy(entry->address, address, 6); 8149 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8150 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8151 return ERROR_CODE_SUCCESS; 8152 } 8153 8154 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8155 btstack_linked_list_iterator_t it; 8156 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8157 while (btstack_linked_list_iterator_has_next(&it)){ 8158 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8159 if (entry->sid != advertising_sid) { 8160 continue; 8161 } 8162 if (entry->address_type != address_type) { 8163 continue; 8164 } 8165 if (memcmp(entry->address, address, 6) != 0) { 8166 continue; 8167 } 8168 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8169 // remove from controller if already present 8170 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8171 } else { 8172 // directly remove entry from whitelist 8173 btstack_linked_list_iterator_remove(&it); 8174 btstack_memory_periodic_advertiser_list_entry_free(entry); 8175 } 8176 return ERROR_CODE_SUCCESS; 8177 } 8178 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8179 } 8180 8181 static void hci_periodic_advertiser_list_clear(void){ 8182 btstack_linked_list_iterator_t it; 8183 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8184 while (btstack_linked_list_iterator_has_next(&it)){ 8185 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8186 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8187 // remove from controller if already present 8188 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8189 continue; 8190 } 8191 // directly remove entry from whitelist 8192 btstack_linked_list_iterator_remove(&it); 8193 btstack_memory_periodic_advertiser_list_entry_free(entry); 8194 } 8195 } 8196 8197 // free all entries unconditionally 8198 static void hci_periodic_advertiser_list_free(void){ 8199 btstack_linked_list_iterator_t lit; 8200 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8201 while (btstack_linked_list_iterator_has_next(&lit)){ 8202 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8203 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8204 btstack_memory_periodic_advertiser_list_entry_free(entry); 8205 } 8206 } 8207 8208 uint8_t gap_periodic_advertiser_list_clear(void){ 8209 hci_periodic_advertiser_list_clear(); 8210 hci_run(); 8211 return ERROR_CODE_SUCCESS; 8212 } 8213 8214 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8215 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8216 if (status){ 8217 return status; 8218 } 8219 hci_run(); 8220 return ERROR_CODE_SUCCESS; 8221 } 8222 8223 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8224 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8225 if (status){ 8226 return status; 8227 } 8228 hci_run(); 8229 return ERROR_CODE_SUCCESS; 8230 } 8231 8232 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8233 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8234 // abort if already active 8235 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8236 return ERROR_CODE_COMMAND_DISALLOWED; 8237 } 8238 // store request 8239 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8240 hci_stack->le_periodic_sync_options = options; 8241 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8242 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8243 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8244 hci_stack->le_periodic_sync_skip = skip; 8245 hci_stack->le_periodic_sync_timeout = sync_timeout; 8246 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8247 8248 hci_run(); 8249 return ERROR_CODE_SUCCESS; 8250 } 8251 8252 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8253 // abort if not requested 8254 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8255 return ERROR_CODE_COMMAND_DISALLOWED; 8256 } 8257 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8258 hci_run(); 8259 return ERROR_CODE_SUCCESS; 8260 } 8261 8262 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8263 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8264 return ERROR_CODE_COMMAND_DISALLOWED; 8265 } 8266 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8267 hci_run(); 8268 return ERROR_CODE_SUCCESS; 8269 } 8270 8271 #endif 8272 #endif 8273 #endif 8274 8275 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 8276 void hci_setup_test_connections_fuzz(void){ 8277 hci_connection_t * conn; 8278 8279 // default address: 66:55:44:33:00:01 8280 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 8281 8282 // setup Controller info 8283 hci_stack->num_cmd_packets = 255; 8284 hci_stack->acl_packets_total_num = 255; 8285 8286 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 8287 addr[5] = 0x01; 8288 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8289 conn->con_handle = addr[5]; 8290 conn->role = HCI_ROLE_SLAVE; 8291 conn->state = RECEIVED_CONNECTION_REQUEST; 8292 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8293 8294 // setup incoming Classic SCO connection with con handle 0x0002 8295 addr[5] = 0x02; 8296 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8297 conn->con_handle = addr[5]; 8298 conn->role = HCI_ROLE_SLAVE; 8299 conn->state = RECEIVED_CONNECTION_REQUEST; 8300 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8301 8302 // setup ready Classic ACL connection with con handle 0x0003 8303 addr[5] = 0x03; 8304 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8305 conn->con_handle = addr[5]; 8306 conn->role = HCI_ROLE_SLAVE; 8307 conn->state = OPEN; 8308 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8309 8310 // setup ready Classic SCO connection with con handle 0x0004 8311 addr[5] = 0x04; 8312 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8313 conn->con_handle = addr[5]; 8314 conn->role = HCI_ROLE_SLAVE; 8315 conn->state = OPEN; 8316 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8317 8318 // setup ready LE ACL connection with con handle 0x005 and public address 8319 addr[5] = 0x05; 8320 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 8321 conn->con_handle = addr[5]; 8322 conn->role = HCI_ROLE_SLAVE; 8323 conn->state = OPEN; 8324 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8325 conn->sm_connection.sm_connection_encrypted = 1; 8326 } 8327 8328 void hci_free_connections_fuzz(void){ 8329 btstack_linked_list_iterator_t it; 8330 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8331 while (btstack_linked_list_iterator_has_next(&it)){ 8332 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8333 btstack_linked_list_iterator_remove(&it); 8334 btstack_memory_hci_connection_free(con); 8335 } 8336 } 8337 void hci_simulate_working_fuzz(void){ 8338 hci_stack->le_scanning_param_update = false; 8339 hci_init_done(); 8340 hci_stack->num_cmd_packets = 255; 8341 } 8342 #endif 8343