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