1 /* 2 * Copyright (C) 2014 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BLUEKITCHEN 24 * GMBH OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 #define BTSTACK_FILE__ "hci.c" 39 40 /* 41 * hci.c 42 * 43 * Created by Matthias Ringwald on 4/29/09. 44 * 45 */ 46 47 #include "btstack_config.h" 48 49 50 #ifdef ENABLE_CLASSIC 51 #ifdef HAVE_EMBEDDED_TICK 52 #include "btstack_run_loop_embedded.h" 53 #endif 54 #endif 55 56 #ifdef ENABLE_BLE 57 #include "gap.h" 58 #include "ble/le_device_db.h" 59 #endif 60 61 #include <stdarg.h> 62 #include <string.h> 63 #include <inttypes.h> 64 65 #include "btstack_debug.h" 66 #include "btstack_event.h" 67 #include "btstack_linked_list.h" 68 #include "btstack_memory.h" 69 #include "bluetooth_company_id.h" 70 #include "bluetooth_data_types.h" 71 #include "gap.h" 72 #include "hci.h" 73 #include "hci_cmd.h" 74 #include "hci_dump.h" 75 #include "ad_parser.h" 76 77 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 78 #ifndef HCI_HOST_ACL_PACKET_NUM 79 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 80 #endif 81 #ifndef HCI_HOST_ACL_PACKET_LEN 82 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 83 #endif 84 #ifndef HCI_HOST_SCO_PACKET_NUM 85 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 86 #endif 87 #ifndef HCI_HOST_SCO_PACKET_LEN 88 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 89 #endif 90 #endif 91 92 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 93 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM." 94 #endif 95 96 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 97 #error "SCO data can either be routed over HCI or over PCM, but not over both. Please only enable ENABLE_SCO_OVER_HCI or HAVE_SCO_TRANSPORT." 98 #endif 99 100 #define HCI_CONNECTION_TIMEOUT_MS 10000 101 102 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 103 #define HCI_RESET_RESEND_TIMEOUT_MS 200 104 #endif 105 106 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 107 #ifndef GAP_INQUIRY_MAX_NAME_LEN 108 #define GAP_INQUIRY_MAX_NAME_LEN 32 109 #endif 110 111 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 112 #define GAP_INQUIRY_DURATION_MIN 0x01 113 #define GAP_INQUIRY_DURATION_MAX 0x30 114 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 115 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 116 #define GAP_INQUIRY_STATE_IDLE 0x00 117 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 118 #define GAP_INQUIRY_STATE_ACTIVE 0x81 119 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 120 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 121 #define GAP_INQUIRY_STATE_PERIODIC 0x84 122 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 123 #define GAP_INQUIRY_STATE_W4_EXIT_PERIODIC_COMPLETE 0x86 124 125 // GAP Remote Name Request 126 #define GAP_REMOTE_NAME_STATE_IDLE 0 127 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 128 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 129 130 // GAP Pairing 131 #define GAP_PAIRING_STATE_IDLE 0 132 #define GAP_PAIRING_STATE_SEND_PIN 1 133 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 134 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 135 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 136 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 137 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 138 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 139 140 // 141 // compact storage of relevant supported HCI Commands. 142 // X-Macro below provides enumeration and mapping table into the supported 143 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 144 // 145 146 // format: command name, byte offset, bit nr in 64-byte supported commands 147 // currently stored in 32-bit variable 148 #define SUPPORTED_HCI_COMMANDS \ 149 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 150 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 151 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 152 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 153 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 154 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 155 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 156 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 157 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 158 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 159 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 160 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 161 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 162 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 163 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 164 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 165 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 166 167 // enumerate supported commands 168 #define X(name, offset, bit) name, 169 enum { 170 SUPPORTED_HCI_COMMANDS 171 SUPPORTED_HCI_COMMANDS_COUNT 172 }; 173 #undef X 174 175 // prototypes 176 #ifdef ENABLE_CLASSIC 177 static void hci_update_scan_enable(void); 178 static void hci_emit_discoverable_enabled(uint8_t enabled); 179 static int hci_local_ssp_activated(void); 180 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 181 static bool hci_ssp_supported(hci_connection_t * connection); 182 static void hci_notify_if_sco_can_send_now(void); 183 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 184 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 185 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 186 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 187 static void hci_connection_timestamp(hci_connection_t *connection); 188 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 189 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 190 #endif 191 192 static int hci_power_control_on(void); 193 static void hci_power_control_off(void); 194 static void hci_state_reset(void); 195 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 196 static void hci_emit_transport_packet_sent(void); 197 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 198 static void hci_emit_nr_connections_changed(void); 199 static void hci_emit_hci_open_failed(void); 200 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 201 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 202 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 203 static void hci_run(void); 204 static int hci_is_le_connection(hci_connection_t * connection); 205 206 #ifdef ENABLE_CLASSIC 207 static int hci_have_usb_transport(void); 208 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 209 #endif 210 211 #ifdef ENABLE_BLE 212 static void hci_whitelist_free(void); 213 #ifdef ENABLE_LE_CENTRAL 214 // called from test/ble_client/advertising_data_parser.c 215 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 216 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 217 static hci_connection_t * gap_get_outgoing_connection(void); 218 static void hci_le_scan_stop(void); 219 static bool hci_run_general_gap_le(void); 220 #endif 221 #ifdef ENABLE_LE_PERIPHERAL 222 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 223 static void hci_periodic_advertiser_list_free(void); 224 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 225 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 226 #endif /* ENABLE_LE_PERIPHERAL */ 227 #endif /* ENABLE_BLE */ 228 229 // the STACK is here 230 #ifndef HAVE_MALLOC 231 static hci_stack_t hci_stack_static; 232 #endif 233 static hci_stack_t * hci_stack = NULL; 234 235 #ifdef ENABLE_CLASSIC 236 // default name 237 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 238 239 // test helper 240 static uint8_t disable_l2cap_timeouts = 0; 241 #endif 242 243 // reset connection state on create and on reconnect 244 // don't overwrite addr, con handle, role 245 static void hci_connection_init(hci_connection_t * conn){ 246 conn->authentication_flags = AUTH_FLAG_NONE; 247 conn->bonding_flags = 0; 248 conn->requested_security_level = LEVEL_0; 249 #ifdef ENABLE_CLASSIC 250 conn->request_role = HCI_ROLE_INVALID; 251 conn->sniff_subrating_max_latency = 0xffff; 252 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 253 conn->link_key_type = INVALID_LINK_KEY; 254 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 255 btstack_run_loop_set_timer_context(&conn->timeout, conn); 256 hci_connection_timestamp(conn); 257 #endif 258 conn->acl_recombination_length = 0; 259 conn->acl_recombination_pos = 0; 260 conn->num_packets_sent = 0; 261 262 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 263 #ifdef ENABLE_BLE 264 conn->le_phy_update_all_phys = 0xff; 265 #endif 266 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 267 conn->le_max_tx_octets = 27; 268 #endif 269 #ifdef ENABLE_CLASSIC_PAIRING_OOB 270 conn->classic_oob_c_192 = NULL; 271 conn->classic_oob_r_192 = NULL; 272 conn->classic_oob_c_256 = NULL; 273 conn->classic_oob_r_256 = NULL; 274 #endif 275 } 276 277 /** 278 * create connection for given address 279 * 280 * @return connection OR NULL, if no memory left 281 */ 282 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 283 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 284 285 hci_connection_t * conn = btstack_memory_hci_connection_get(); 286 if (!conn) return NULL; 287 hci_connection_init(conn); 288 289 bd_addr_copy(conn->address, addr); 290 conn->address_type = addr_type; 291 conn->con_handle = HCI_CON_HANDLE_INVALID; 292 conn->role = HCI_ROLE_INVALID; 293 294 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 295 296 return conn; 297 } 298 299 300 /** 301 * get le connection parameter range 302 * 303 * @return le connection parameter range struct 304 */ 305 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 306 *range = hci_stack->le_connection_parameter_range; 307 } 308 309 /** 310 * set le connection parameter range 311 * 312 */ 313 314 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 315 hci_stack->le_connection_parameter_range = *range; 316 } 317 318 /** 319 * @brief Test if connection parameters are inside in existing rage 320 * @param conn_interval_min (unit: 1.25ms) 321 * @param conn_interval_max (unit: 1.25ms) 322 * @param conn_latency 323 * @param supervision_timeout (unit: 10ms) 324 * @return 1 if included 325 */ 326 int gap_connection_parameter_range_included(le_connection_parameter_range_t * existing_range, uint16_t le_conn_interval_min, uint16_t le_conn_interval_max, uint16_t le_conn_latency, uint16_t le_supervision_timeout){ 327 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 328 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 329 330 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 331 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 332 333 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 334 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 335 336 return 1; 337 } 338 339 /** 340 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 341 * @note: default: 1 342 * @param max_peripheral_connections 343 */ 344 #ifdef ENABLE_LE_PERIPHERAL 345 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 346 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 347 } 348 #endif 349 350 /** 351 * get hci connections iterator 352 * 353 * @return hci connections iterator 354 */ 355 356 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 357 btstack_linked_list_iterator_init(it, &hci_stack->connections); 358 } 359 360 /** 361 * get connection for a given handle 362 * 363 * @return connection OR NULL, if not found 364 */ 365 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 366 btstack_linked_list_iterator_t it; 367 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 368 while (btstack_linked_list_iterator_has_next(&it)){ 369 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 370 if ( item->con_handle == con_handle ) { 371 return item; 372 } 373 } 374 return NULL; 375 } 376 377 /** 378 * get connection for given address 379 * 380 * @return connection OR NULL, if not found 381 */ 382 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 383 btstack_linked_list_iterator_t it; 384 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 385 while (btstack_linked_list_iterator_has_next(&it)){ 386 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 387 if (connection->address_type != addr_type) continue; 388 if (memcmp(addr, connection->address, 6) != 0) continue; 389 return connection; 390 } 391 return NULL; 392 } 393 394 #ifdef ENABLE_CLASSIC 395 396 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 397 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 398 } 399 400 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 401 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 402 } 403 404 #ifdef ENABLE_SCO_OVER_HCI 405 static int hci_number_sco_connections(void){ 406 int connections = 0; 407 btstack_linked_list_iterator_t it; 408 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 409 while (btstack_linked_list_iterator_has_next(&it)){ 410 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 411 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 412 connections++; 413 } 414 return connections; 415 } 416 #endif 417 418 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 419 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 420 #ifdef HAVE_EMBEDDED_TICK 421 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 422 // connections might be timed out 423 hci_emit_l2cap_check_timeout(connection); 424 } 425 #else 426 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 427 // connections might be timed out 428 hci_emit_l2cap_check_timeout(connection); 429 } 430 #endif 431 } 432 433 static void hci_connection_timestamp(hci_connection_t *connection){ 434 #ifdef HAVE_EMBEDDED_TICK 435 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 436 #else 437 connection->timestamp = btstack_run_loop_get_time_ms(); 438 #endif 439 } 440 441 /** 442 * add authentication flags and reset timer 443 * @note: assumes classic connection 444 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 445 */ 446 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 447 bd_addr_t addr; 448 reverse_bd_addr(bd_addr, addr); 449 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 450 if (conn) { 451 connectionSetAuthenticationFlags(conn, flags); 452 hci_connection_timestamp(conn); 453 } 454 } 455 456 static bool hci_pairing_active(hci_connection_t * hci_connection){ 457 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 458 } 459 460 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 461 if (hci_pairing_active(hci_connection)) return; 462 if (ssp){ 463 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 464 } else { 465 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 466 } 467 // if we are initiator, we have sent an HCI Authenticate Request 468 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 469 470 // if we are responder, use minimal service security level as required level 471 if (!initiator){ 472 hci_connection->requested_security_level = (gap_security_level_t) btstack_max((uint32_t) hci_connection->requested_security_level, (uint32_t) hci_stack->gap_minimal_service_security_level); 473 } 474 475 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 476 477 uint8_t event[12]; 478 event[0] = GAP_EVENT_PAIRING_STARTED; 479 event[1] = 10; 480 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 481 reverse_bd_addr(hci_connection->address, &event[4]); 482 event[10] = (uint8_t) ssp; 483 event[11] = (uint8_t) initiator; 484 hci_emit_event(event, sizeof(event), 1); 485 } 486 487 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 488 hci_connection->requested_security_level = LEVEL_0; 489 if (!hci_pairing_active(hci_connection)) return; 490 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 491 #ifdef ENABLE_CLASSIC_PAIRING_OOB 492 hci_connection->classic_oob_c_192 = NULL; 493 hci_connection->classic_oob_r_192 = NULL; 494 hci_connection->classic_oob_c_256 = NULL; 495 hci_connection->classic_oob_r_256 = NULL; 496 #endif 497 log_info("pairing complete, status %02x", status); 498 499 uint8_t event[11]; 500 event[0] = GAP_EVENT_PAIRING_COMPLETE; 501 event[1] = 9; 502 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 503 reverse_bd_addr(hci_connection->address, &event[4]); 504 event[10] = status; 505 hci_emit_event(event, sizeof(event), 1); 506 507 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 508 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 509 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 510 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 511 hci_connection->bonding_status = status; 512 } 513 } 514 515 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 516 hci_connection_t * conn = hci_connection_for_handle(handle); 517 if (!conn) return false; 518 return hci_pairing_active(conn); 519 } 520 521 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 522 if (!hci_stack->link_key_db) return; 523 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 524 hci_stack->link_key_db->delete_link_key(addr); 525 } 526 527 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 528 if (!hci_stack->link_key_db) return; 529 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 530 hci_stack->link_key_db->put_link_key(addr, link_key, type); 531 } 532 533 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 534 if (!hci_stack->link_key_db) return false; 535 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 536 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 537 return result; 538 } 539 540 void gap_delete_all_link_keys(void){ 541 bd_addr_t addr; 542 link_key_t link_key; 543 link_key_type_t type; 544 btstack_link_key_iterator_t it; 545 int ok = gap_link_key_iterator_init(&it); 546 if (!ok) { 547 log_error("could not initialize iterator"); 548 return; 549 } 550 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 551 gap_drop_link_key_for_bd_addr(addr); 552 } 553 gap_link_key_iterator_done(&it); 554 } 555 556 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 557 if (!hci_stack->link_key_db) return 0; 558 if (!hci_stack->link_key_db->iterator_init) return 0; 559 return hci_stack->link_key_db->iterator_init(it); 560 } 561 int gap_link_key_iterator_get_next(btstack_link_key_iterator_t * it, bd_addr_t bd_addr, link_key_t link_key, link_key_type_t * type){ 562 if (!hci_stack->link_key_db) return 0; 563 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 564 } 565 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 566 if (!hci_stack->link_key_db) return; 567 hci_stack->link_key_db->iterator_done(it); 568 } 569 #endif 570 571 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 572 switch (address_type){ 573 case BD_ADDR_TYPE_LE_PUBLIC: 574 case BD_ADDR_TYPE_LE_RANDOM: 575 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 576 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 577 return true; 578 default: 579 return false; 580 } 581 } 582 583 static int hci_is_le_connection(hci_connection_t * connection){ 584 return hci_is_le_connection_type(connection->address_type); 585 } 586 587 /** 588 * count connections 589 */ 590 static int nr_hci_connections(void){ 591 int count = 0; 592 btstack_linked_item_t *it; 593 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 594 count++; 595 } 596 return count; 597 } 598 599 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 600 601 unsigned int num_packets_sent_classic = 0; 602 unsigned int num_packets_sent_le = 0; 603 604 btstack_linked_item_t *it; 605 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 606 hci_connection_t * connection = (hci_connection_t *) it; 607 if (hci_is_le_connection(connection)){ 608 num_packets_sent_le += connection->num_packets_sent; 609 } 610 if (connection->address_type == BD_ADDR_TYPE_ACL){ 611 num_packets_sent_classic += connection->num_packets_sent; 612 } 613 } 614 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 615 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 616 int free_slots_le = 0; 617 618 if (free_slots_classic < 0){ 619 log_error("hci_number_free_acl_slots: outgoing classic packets (%u) > total classic packets (%u)", num_packets_sent_classic, hci_stack->acl_packets_total_num); 620 return 0; 621 } 622 623 if (hci_stack->le_acl_packets_total_num){ 624 // if we have LE slots, they are used 625 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 626 if (free_slots_le < 0){ 627 log_error("hci_number_free_acl_slots: outgoing le packets (%u) > total le packets (%u)", num_packets_sent_le, hci_stack->le_acl_packets_total_num); 628 return 0; 629 } 630 } else { 631 // otherwise, classic slots are used for LE, too 632 free_slots_classic -= num_packets_sent_le; 633 if (free_slots_classic < 0){ 634 log_error("hci_number_free_acl_slots: outgoing classic + le packets (%u + %u) > total packets (%u)", num_packets_sent_classic, num_packets_sent_le, hci_stack->acl_packets_total_num); 635 return 0; 636 } 637 } 638 639 switch (address_type){ 640 case BD_ADDR_TYPE_UNKNOWN: 641 log_error("hci_number_free_acl_slots: unknown address type"); 642 return 0; 643 644 case BD_ADDR_TYPE_ACL: 645 return (uint16_t) free_slots_classic; 646 647 default: 648 if (hci_stack->le_acl_packets_total_num > 0){ 649 return (uint16_t) free_slots_le; 650 } 651 return (uint16_t) free_slots_classic; 652 } 653 } 654 655 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 656 // get connection type 657 hci_connection_t * connection = hci_connection_for_handle(con_handle); 658 if (!connection){ 659 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 660 return 0; 661 } 662 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 663 } 664 665 #ifdef ENABLE_CLASSIC 666 static int hci_number_free_sco_slots(void){ 667 unsigned int num_sco_packets_sent = 0; 668 btstack_linked_item_t *it; 669 if (hci_stack->synchronous_flow_control_enabled){ 670 // explicit flow control 671 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 672 hci_connection_t * connection = (hci_connection_t *) it; 673 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 674 num_sco_packets_sent += connection->num_packets_sent; 675 } 676 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 677 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 678 return 0; 679 } 680 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 681 } else { 682 // implicit flow control -- TODO 683 int num_ready = 0; 684 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 685 hci_connection_t * connection = (hci_connection_t *) it; 686 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 687 if (connection->sco_tx_ready == 0) continue; 688 num_ready++; 689 } 690 return num_ready; 691 } 692 } 693 #endif 694 695 // only used to send HCI Host Number Completed Packets 696 static int hci_can_send_comand_packet_transport(void){ 697 if (hci_stack->hci_packet_buffer_reserved) return 0; 698 699 // check for async hci transport implementations 700 if (hci_stack->hci_transport->can_send_packet_now){ 701 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 702 return 0; 703 } 704 } 705 return 1; 706 } 707 708 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 709 bool hci_can_send_command_packet_now(void){ 710 if (hci_can_send_comand_packet_transport() == 0) return false; 711 return hci_stack->num_cmd_packets > 0u; 712 } 713 714 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 715 // check for async hci transport implementations 716 if (!hci_stack->hci_transport->can_send_packet_now) return true; 717 return hci_stack->hci_transport->can_send_packet_now(packet_type); 718 } 719 720 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 721 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 722 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 723 } 724 725 bool hci_can_send_acl_le_packet_now(void){ 726 if (hci_stack->hci_packet_buffer_reserved) return false; 727 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 728 } 729 730 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 731 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 732 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 733 } 734 735 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 736 if (hci_stack->hci_packet_buffer_reserved) return false; 737 return hci_can_send_prepared_acl_packet_now(con_handle); 738 } 739 740 #ifdef ENABLE_CLASSIC 741 bool hci_can_send_acl_classic_packet_now(void){ 742 if (hci_stack->hci_packet_buffer_reserved) return false; 743 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 744 } 745 746 bool hci_can_send_prepared_sco_packet_now(void){ 747 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 748 if (hci_have_usb_transport()){ 749 return hci_stack->sco_can_send_now; 750 } else { 751 return hci_number_free_sco_slots() > 0; 752 } 753 } 754 755 bool hci_can_send_sco_packet_now(void){ 756 if (hci_stack->hci_packet_buffer_reserved) return false; 757 return hci_can_send_prepared_sco_packet_now(); 758 } 759 760 void hci_request_sco_can_send_now_event(void){ 761 hci_stack->sco_waiting_for_can_send_now = 1; 762 hci_notify_if_sco_can_send_now(); 763 } 764 #endif 765 766 // used for internal checks in l2cap.c 767 bool hci_is_packet_buffer_reserved(void){ 768 return hci_stack->hci_packet_buffer_reserved; 769 } 770 771 // reserves outgoing packet buffer. 772 // @return 1 if successful 773 bool hci_reserve_packet_buffer(void){ 774 if (hci_stack->hci_packet_buffer_reserved) { 775 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 776 return false; 777 } 778 hci_stack->hci_packet_buffer_reserved = true; 779 return true; 780 } 781 782 void hci_release_packet_buffer(void){ 783 hci_stack->hci_packet_buffer_reserved = false; 784 } 785 786 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 787 static int hci_transport_synchronous(void){ 788 return hci_stack->hci_transport->can_send_packet_now == NULL; 789 } 790 791 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 792 793 // log_info("hci_send_acl_packet_fragments %u/%u (con 0x%04x)", hci_stack->acl_fragmentation_pos, hci_stack->acl_fragmentation_total_size, connection->con_handle); 794 795 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 796 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 797 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 798 max_acl_data_packet_length = hci_stack->le_data_packets_length; 799 } 800 801 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 802 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 803 max_acl_data_packet_length = connection->le_max_tx_octets; 804 } 805 #endif 806 807 log_debug("hci_send_acl_packet_fragments entered"); 808 809 uint8_t status = ERROR_CODE_SUCCESS; 810 // multiple packets could be send on a synchronous HCI transport 811 while (true){ 812 813 log_debug("hci_send_acl_packet_fragments loop entered"); 814 815 // get current data 816 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 817 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 818 bool more_fragments = false; 819 820 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 821 if (current_acl_data_packet_length > max_acl_data_packet_length){ 822 more_fragments = true; 823 current_acl_data_packet_length = max_acl_data_packet_length; 824 } 825 826 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 827 if (acl_header_pos > 0u){ 828 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 829 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 830 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 831 } 832 833 // update header len 834 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 835 836 // count packet 837 connection->num_packets_sent++; 838 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 839 840 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 841 if (more_fragments){ 842 // update start of next fragment to send 843 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 844 } else { 845 // done 846 hci_stack->acl_fragmentation_pos = 0; 847 hci_stack->acl_fragmentation_total_size = 0; 848 } 849 850 // send packet 851 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 852 const int size = current_acl_data_packet_length + 4; 853 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 854 hci_stack->acl_fragmentation_tx_active = 1; 855 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 856 if (err != 0){ 857 // no error from HCI Transport expected 858 status = ERROR_CODE_HARDWARE_FAILURE; 859 } 860 861 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 862 863 // done yet? 864 if (!more_fragments) break; 865 866 // can send more? 867 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 868 } 869 870 log_debug("hci_send_acl_packet_fragments loop over"); 871 872 // release buffer now for synchronous transport 873 if (hci_transport_synchronous()){ 874 hci_stack->acl_fragmentation_tx_active = 0; 875 hci_release_packet_buffer(); 876 hci_emit_transport_packet_sent(); 877 } 878 879 return status; 880 } 881 882 // pre: caller has reserved the packet buffer 883 uint8_t hci_send_acl_packet_buffer(int size){ 884 btstack_assert(hci_stack->hci_packet_buffer_reserved); 885 886 uint8_t * packet = hci_stack->hci_packet_buffer; 887 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 888 889 // check for free places on Bluetooth module 890 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 891 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 892 hci_release_packet_buffer(); 893 hci_emit_transport_packet_sent(); 894 return BTSTACK_ACL_BUFFERS_FULL; 895 } 896 897 hci_connection_t *connection = hci_connection_for_handle( con_handle); 898 if (!connection) { 899 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 900 hci_release_packet_buffer(); 901 hci_emit_transport_packet_sent(); 902 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 903 } 904 905 #ifdef ENABLE_CLASSIC 906 hci_connection_timestamp(connection); 907 #endif 908 909 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 910 911 // setup data 912 hci_stack->acl_fragmentation_total_size = size; 913 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 914 915 return hci_send_acl_packet_fragments(connection); 916 } 917 918 #ifdef ENABLE_CLASSIC 919 // pre: caller has reserved the packet buffer 920 uint8_t hci_send_sco_packet_buffer(int size){ 921 btstack_assert(hci_stack->hci_packet_buffer_reserved); 922 923 uint8_t * packet = hci_stack->hci_packet_buffer; 924 925 // skip checks in loopback mode 926 if (!hci_stack->loopback_mode){ 927 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 928 929 // check for free places on Bluetooth module 930 if (!hci_can_send_prepared_sco_packet_now()) { 931 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 932 hci_release_packet_buffer(); 933 hci_emit_transport_packet_sent(); 934 return BTSTACK_ACL_BUFFERS_FULL; 935 } 936 937 // track send packet in connection struct 938 hci_connection_t *connection = hci_connection_for_handle( con_handle); 939 if (!connection) { 940 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 941 hci_release_packet_buffer(); 942 hci_emit_transport_packet_sent(); 943 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 944 } 945 946 if (hci_have_usb_transport()){ 947 // token used 948 hci_stack->sco_can_send_now = false; 949 } else { 950 if (hci_stack->synchronous_flow_control_enabled){ 951 connection->num_packets_sent++; 952 } else { 953 connection->sco_tx_ready--; 954 } 955 } 956 } 957 958 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 959 960 #ifdef HAVE_SCO_TRANSPORT 961 hci_stack->sco_transport->send_packet(packet, size); 962 hci_release_packet_buffer(); 963 hci_emit_transport_packet_sent(); 964 965 return 0; 966 #else 967 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 968 if (hci_transport_synchronous()){ 969 hci_release_packet_buffer(); 970 hci_emit_transport_packet_sent(); 971 } 972 973 if (err != 0){ 974 return ERROR_CODE_HARDWARE_FAILURE; 975 } 976 return ERROR_CODE_SUCCESS; 977 #endif 978 } 979 #endif 980 981 #ifdef ENABLE_BLE 982 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 983 btstack_assert(hci_stack->hci_packet_buffer_reserved); 984 985 uint8_t * packet = hci_stack->hci_packet_buffer; 986 // TODO: check for space on controller 987 // TODO: track outgoing packet sent 988 hci_dump_packet( HCI_ISO_DATA_PACKET, 0, packet, size); 989 990 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 991 return (err == 0) ? ERROR_CODE_SUCCESS : ERROR_CODE_HARDWARE_FAILURE; 992 } 993 #endif 994 995 static void acl_handler(uint8_t *packet, uint16_t size){ 996 997 // get info 998 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 999 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1000 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1001 uint16_t acl_length = READ_ACL_LENGTH(packet); 1002 1003 // ignore non-registered handle 1004 if (!conn){ 1005 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1006 return; 1007 } 1008 1009 // assert packet is complete 1010 if ((acl_length + 4u) != size){ 1011 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1012 return; 1013 } 1014 1015 #ifdef ENABLE_CLASSIC 1016 // update idle timestamp 1017 hci_connection_timestamp(conn); 1018 #endif 1019 1020 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1021 hci_stack->host_completed_packets = 1; 1022 conn->num_packets_completed++; 1023 #endif 1024 1025 // handle different packet types 1026 switch (acl_flags & 0x03u) { 1027 1028 case 0x01: // continuation fragment 1029 1030 // sanity checks 1031 if (conn->acl_recombination_pos == 0u) { 1032 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1033 return; 1034 } 1035 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1036 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1037 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1038 conn->acl_recombination_pos = 0; 1039 return; 1040 } 1041 1042 // append fragment payload (header already stored) 1043 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1044 &packet[4], acl_length); 1045 conn->acl_recombination_pos += acl_length; 1046 1047 // forward complete L2CAP packet if complete. 1048 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1049 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1050 // reset recombination buffer 1051 conn->acl_recombination_length = 0; 1052 conn->acl_recombination_pos = 0; 1053 } 1054 break; 1055 1056 case 0x02: { // first fragment 1057 1058 // sanity check 1059 if (conn->acl_recombination_pos) { 1060 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1061 conn->acl_recombination_pos = 0; 1062 } 1063 1064 // peek into L2CAP packet! 1065 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1066 1067 // compare fragment size to L2CAP packet size 1068 if (acl_length >= (l2cap_length + 4u)){ 1069 // forward fragment as L2CAP packet 1070 hci_emit_acl_packet(packet, acl_length + 4u); 1071 } else { 1072 1073 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1074 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1075 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1076 return; 1077 } 1078 1079 // store first fragment and tweak acl length for complete package 1080 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1081 packet, acl_length + 4u); 1082 conn->acl_recombination_pos = acl_length + 4u; 1083 conn->acl_recombination_length = l2cap_length; 1084 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1085 } 1086 break; 1087 1088 } 1089 default: 1090 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1091 return; 1092 } 1093 1094 // execute main loop 1095 hci_run(); 1096 } 1097 1098 static void hci_connection_stop_timer(hci_connection_t * conn){ 1099 btstack_run_loop_remove_timer(&conn->timeout); 1100 #ifdef ENABLE_CLASSIC 1101 btstack_run_loop_remove_timer(&conn->timeout_sco); 1102 #endif 1103 } 1104 1105 static void hci_shutdown_connection(hci_connection_t *conn){ 1106 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1107 1108 #ifdef ENABLE_CLASSIC 1109 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1110 bd_addr_type_t addr_type = conn->address_type; 1111 #endif 1112 #ifdef HAVE_SCO_TRANSPORT 1113 hci_con_handle_t con_handle = conn->con_handle; 1114 #endif 1115 #endif 1116 1117 hci_connection_stop_timer(conn); 1118 1119 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1120 btstack_memory_hci_connection_free( conn ); 1121 1122 // now it's gone 1123 hci_emit_nr_connections_changed(); 1124 1125 #ifdef ENABLE_CLASSIC 1126 #ifdef ENABLE_SCO_OVER_HCI 1127 // update SCO 1128 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1129 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1130 } 1131 #endif 1132 #ifdef HAVE_SCO_TRANSPORT 1133 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1134 hci_stack->sco_transport->close(con_handle); 1135 } 1136 #endif 1137 #endif 1138 } 1139 1140 #ifdef ENABLE_CLASSIC 1141 1142 static const uint16_t packet_type_sizes[] = { 1143 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1144 HCI_ACL_DH1_SIZE, 0, 0, 0, 1145 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1146 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1147 }; 1148 static const uint8_t packet_type_feature_requirement_bit[] = { 1149 0, // 3 slot packets 1150 1, // 5 slot packets 1151 25, // EDR 2 mpbs 1152 26, // EDR 3 mbps 1153 39, // 3 slot EDR packts 1154 40, // 5 slot EDR packet 1155 }; 1156 static const uint16_t packet_type_feature_packet_mask[] = { 1157 0x0f00, // 3 slot packets 1158 0xf000, // 5 slot packets 1159 0x1102, // EDR 2 mpbs 1160 0x2204, // EDR 3 mbps 1161 0x0300, // 3 slot EDR packts 1162 0x3000, // 5 slot EDR packet 1163 }; 1164 1165 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1166 // enable packet types based on size 1167 uint16_t packet_types = 0; 1168 unsigned int i; 1169 for (i=0;i<16;i++){ 1170 if (packet_type_sizes[i] == 0) continue; 1171 if (packet_type_sizes[i] <= buffer_size){ 1172 packet_types |= 1 << i; 1173 } 1174 } 1175 // disable packet types due to missing local supported features 1176 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1177 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1178 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1179 if (feature_set) continue; 1180 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1181 packet_types &= ~packet_type_feature_packet_mask[i]; 1182 } 1183 // flip bits for "may not be used" 1184 packet_types ^= 0x3306; 1185 return packet_types; 1186 } 1187 1188 uint16_t hci_usable_acl_packet_types(void){ 1189 return hci_stack->packet_types; 1190 } 1191 #endif 1192 1193 uint8_t* hci_get_outgoing_packet_buffer(void){ 1194 // hci packet buffer is >= acl data packet length 1195 return hci_stack->hci_packet_buffer; 1196 } 1197 1198 uint16_t hci_max_acl_data_packet_length(void){ 1199 return hci_stack->acl_data_packet_length; 1200 } 1201 1202 #ifdef ENABLE_CLASSIC 1203 bool hci_extended_sco_link_supported(void){ 1204 // No. 31, byte 3, bit 7 1205 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1206 } 1207 #endif 1208 1209 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1210 // No. 54, byte 6, bit 6 1211 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1212 } 1213 1214 #ifdef ENABLE_CLASSIC 1215 static int gap_ssp_supported(void){ 1216 // No. 51, byte 6, bit 3 1217 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1218 } 1219 #endif 1220 1221 static int hci_classic_supported(void){ 1222 #ifdef ENABLE_CLASSIC 1223 // No. 37, byte 4, bit 5, = No BR/EDR Support 1224 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1225 #else 1226 return 0; 1227 #endif 1228 } 1229 1230 static int hci_le_supported(void){ 1231 #ifdef ENABLE_BLE 1232 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1233 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1234 #else 1235 return 0; 1236 #endif 1237 } 1238 1239 static bool hci_command_supported(uint8_t command_index){ 1240 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1241 } 1242 1243 #ifdef ENABLE_BLE 1244 1245 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1246 static bool hci_extended_advertising_supported(void){ 1247 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1248 } 1249 #endif 1250 1251 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1252 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1253 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1254 } else { 1255 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1256 } 1257 } 1258 1259 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1260 *addr_type = hci_stack->le_own_addr_type; 1261 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1262 } 1263 1264 #ifdef ENABLE_LE_PERIPHERAL 1265 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1266 *addr_type = hci_stack->le_advertisements_own_addr_type; 1267 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1268 }; 1269 #endif 1270 1271 #ifdef ENABLE_LE_CENTRAL 1272 1273 /** 1274 * @brief Get own addr type and address used for LE connections (Central) 1275 */ 1276 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1277 *addr_type = hci_stack->le_connection_own_addr_type; 1278 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1279 } 1280 1281 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1282 1283 uint16_t offset = 3; 1284 uint8_t num_reports = packet[offset]; 1285 offset += 1; 1286 1287 uint16_t i; 1288 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1289 for (i=0; (i<num_reports) && (offset < size);i++){ 1290 // sanity checks on data_length: 1291 uint8_t data_length = packet[offset + 8]; 1292 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1293 if ((offset + 9u + data_length + 1u) > size) return; 1294 // setup event 1295 uint8_t event_size = 10u + data_length; 1296 uint16_t pos = 0; 1297 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1298 event[pos++] = event_size; 1299 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1300 offset += 8; 1301 pos += 8; 1302 event[pos++] = packet[offset + 1 + data_length]; // rssi 1303 event[pos++] = data_length; 1304 offset++; 1305 (void)memcpy(&event[pos], &packet[offset], data_length); 1306 pos += data_length; 1307 offset += data_length + 1u; // rssi 1308 hci_emit_event(event, pos, 1); 1309 } 1310 } 1311 1312 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1313 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1314 uint16_t offset = 3; 1315 uint8_t num_reports = packet[offset++]; 1316 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1317 uint8_t i; 1318 for (i=0; (i<num_reports) && (offset < size);i++){ 1319 // sanity checks on data_length: 1320 uint16_t data_length = packet[offset + 23]; 1321 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1322 if ((offset + 24u + data_length) > size) return; 1323 uint16_t event_type = little_endian_read_16(packet, offset); 1324 offset += 2; 1325 if ((event_type & 0x10) != 0) { 1326 // setup legacy event 1327 uint8_t legacy_event_type; 1328 switch (event_type){ 1329 case 0b0010011: 1330 // ADV_IND 1331 legacy_event_type = 0; 1332 break; 1333 case 0b0010101: 1334 // ADV_DIRECT_IND 1335 legacy_event_type = 1; 1336 break; 1337 case 0b0010010: 1338 // ADV_SCAN_IND 1339 legacy_event_type = 2; 1340 break; 1341 case 0b0010000: 1342 // ADV_NONCONN_IND 1343 legacy_event_type = 3; 1344 break; 1345 case 0b0011011: 1346 case 0b0011010: 1347 // SCAN_RSP 1348 legacy_event_type = 4; 1349 break; 1350 default: 1351 legacy_event_type = 0; 1352 break; 1353 } 1354 uint16_t pos = 0; 1355 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1356 event[pos++] = 10u + data_length; 1357 event[pos++] = legacy_event_type; 1358 // copy address type + address 1359 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1360 offset += 7; 1361 pos += 7; 1362 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1363 offset += 4; 1364 // copy rssi 1365 event[pos++] = packet[offset++]; 1366 // skip periodic advertising interval and direct address 1367 offset += 9; 1368 // copy data len + data; 1369 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1370 pos += 1 +data_length; 1371 offset += 1+ data_length; 1372 hci_emit_event(event, pos, 1); 1373 } else { 1374 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1375 uint8_t report_len = 24 + data_length; 1376 event[1] = report_len; 1377 little_endian_store_16(event, 2, event_type); 1378 memcpy(&event[4], &packet[offset], report_len); 1379 offset += report_len; 1380 hci_emit_event(event, 2 + report_len, 1); 1381 } 1382 } 1383 } 1384 #endif 1385 1386 #endif 1387 #endif 1388 1389 #ifdef ENABLE_BLE 1390 #ifdef ENABLE_LE_PERIPHERAL 1391 static void hci_update_advertisements_enabled_for_current_roles(void){ 1392 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1393 // get number of active le slave connections 1394 int num_slave_connections = 0; 1395 btstack_linked_list_iterator_t it; 1396 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1397 while (btstack_linked_list_iterator_has_next(&it)){ 1398 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1399 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1400 if (con->state != OPEN) continue; 1401 if (con->role != HCI_ROLE_SLAVE) continue; 1402 if (!hci_is_le_connection(con)) continue; 1403 num_slave_connections++; 1404 } 1405 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1406 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1407 } else { 1408 hci_stack->le_advertisements_enabled_for_current_roles = false; 1409 } 1410 } 1411 #endif 1412 #endif 1413 1414 #ifdef ENABLE_CLASSIC 1415 static void gap_run_set_local_name(void){ 1416 hci_reserve_packet_buffer(); 1417 uint8_t * packet = hci_stack->hci_packet_buffer; 1418 // construct HCI Command and send 1419 uint16_t opcode = hci_write_local_name.opcode; 1420 hci_stack->last_cmd_opcode = opcode; 1421 packet[0] = opcode & 0xff; 1422 packet[1] = opcode >> 8; 1423 packet[2] = DEVICE_NAME_LEN; 1424 memset(&packet[3], 0, DEVICE_NAME_LEN); 1425 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1426 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1427 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1428 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1429 // expand '00:00:00:00:00:00' in name with bd_addr 1430 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1431 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1432 } 1433 1434 static void gap_run_set_eir_data(void){ 1435 hci_reserve_packet_buffer(); 1436 uint8_t * packet = hci_stack->hci_packet_buffer; 1437 // construct HCI Command in-place and send 1438 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1439 hci_stack->last_cmd_opcode = opcode; 1440 uint16_t offset = 0; 1441 packet[offset++] = opcode & 0xff; 1442 packet[offset++] = opcode >> 8; 1443 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1444 packet[offset++] = 0; // FEC not required 1445 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1446 if (hci_stack->eir_data){ 1447 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1448 ad_context_t context; 1449 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1450 uint8_t data_type = ad_iterator_get_data_type(&context); 1451 uint8_t size = ad_iterator_get_data_len(&context); 1452 const uint8_t *data = ad_iterator_get_data(&context); 1453 // copy item 1454 packet[offset++] = size + 1; 1455 packet[offset++] = data_type; 1456 memcpy(&packet[offset], data, size); 1457 // update name item 1458 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1459 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1460 } 1461 offset += size; 1462 } 1463 } else { 1464 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1465 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1466 packet[offset++] = bytes_to_copy + 1; 1467 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1468 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1469 // expand '00:00:00:00:00:00' in name with bd_addr 1470 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1471 } 1472 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1473 } 1474 1475 static void hci_run_gap_tasks_classic(void){ 1476 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1477 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1478 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1479 return; 1480 } 1481 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1482 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1483 gap_run_set_local_name(); 1484 return; 1485 } 1486 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1487 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1488 gap_run_set_eir_data(); 1489 return; 1490 } 1491 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1492 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1493 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1494 return; 1495 } 1496 // write page scan activity 1497 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1498 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1499 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1500 return; 1501 } 1502 // write page scan type 1503 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1504 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1505 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1506 return; 1507 } 1508 // write page timeout 1509 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1510 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1511 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1512 return; 1513 } 1514 // send scan enable 1515 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1516 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1517 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1518 return; 1519 } 1520 // send write scan activity 1521 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1522 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1523 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1524 return; 1525 } 1526 } 1527 #endif 1528 1529 #ifndef HAVE_HOST_CONTROLLER_API 1530 1531 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1532 if (!hci_stack->config) return 0; 1533 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1534 // Limit baud rate for Broadcom chipsets to 3 mbps 1535 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1536 baud_rate = 3000000; 1537 } 1538 return baud_rate; 1539 } 1540 1541 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1542 UNUSED(ds); 1543 1544 switch (hci_stack->substate){ 1545 case HCI_INIT_W4_SEND_RESET: 1546 log_info("Resend HCI Reset"); 1547 hci_stack->substate = HCI_INIT_SEND_RESET; 1548 hci_stack->num_cmd_packets = 1; 1549 hci_run(); 1550 break; 1551 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1552 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1553 if (hci_stack->hci_transport->reset_link){ 1554 hci_stack->hci_transport->reset_link(); 1555 } 1556 1557 /* fall through */ 1558 1559 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1560 log_info("Resend HCI Reset - CSR Warm Boot"); 1561 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1562 hci_stack->num_cmd_packets = 1; 1563 hci_run(); 1564 break; 1565 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1566 if (hci_stack->hci_transport->set_baudrate){ 1567 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1568 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1569 hci_stack->hci_transport->set_baudrate(baud_rate); 1570 } 1571 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1572 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1573 if (hci_stack->hci_transport->reset_link){ 1574 log_info("Link Reset"); 1575 hci_stack->hci_transport->reset_link(); 1576 } 1577 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1578 hci_run(); 1579 } 1580 break; 1581 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1582 // otherwise continue 1583 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1584 hci_send_cmd(&hci_read_local_supported_commands); 1585 break; 1586 default: 1587 break; 1588 } 1589 } 1590 #endif 1591 1592 static void hci_initializing_next_state(void){ 1593 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1594 } 1595 1596 static void hci_init_done(void){ 1597 // done. tell the app 1598 log_info("hci_init_done -> HCI_STATE_WORKING"); 1599 hci_stack->state = HCI_STATE_WORKING; 1600 hci_emit_state(); 1601 } 1602 1603 // assumption: hci_can_send_command_packet_now() == true 1604 static void hci_initializing_run(void){ 1605 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1606 1607 if (!hci_can_send_command_packet_now()) return; 1608 1609 #ifndef HAVE_HOST_CONTROLLER_API 1610 bool need_baud_change = hci_stack->config 1611 && hci_stack->chipset 1612 && hci_stack->chipset->set_baudrate_command 1613 && hci_stack->hci_transport->set_baudrate 1614 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1615 #endif 1616 1617 switch (hci_stack->substate){ 1618 case HCI_INIT_SEND_RESET: 1619 hci_state_reset(); 1620 1621 #ifndef HAVE_HOST_CONTROLLER_API 1622 // prepare reset if command complete not received in 100ms 1623 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1624 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1625 btstack_run_loop_add_timer(&hci_stack->timeout); 1626 #endif 1627 // send command 1628 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1629 hci_send_cmd(&hci_reset); 1630 break; 1631 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1632 hci_send_cmd(&hci_read_local_version_information); 1633 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1634 break; 1635 1636 #ifndef HAVE_HOST_CONTROLLER_API 1637 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1638 hci_state_reset(); 1639 // prepare reset if command complete not received in 100ms 1640 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1641 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1642 btstack_run_loop_add_timer(&hci_stack->timeout); 1643 // send command 1644 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1645 hci_send_cmd(&hci_reset); 1646 break; 1647 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1648 hci_state_reset(); 1649 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1650 hci_send_cmd(&hci_reset); 1651 break; 1652 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1653 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1654 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1655 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1656 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1657 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1658 break; 1659 } 1660 case HCI_INIT_SET_BD_ADDR: 1661 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1662 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1663 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1664 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1665 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1666 break; 1667 case HCI_INIT_SEND_READ_LOCAL_NAME: 1668 #ifdef ENABLE_CLASSIC 1669 hci_send_cmd(&hci_read_local_name); 1670 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1671 break; 1672 #endif 1673 /* fall through */ 1674 1675 case HCI_INIT_SEND_BAUD_CHANGE: 1676 if (need_baud_change) { 1677 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1678 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1679 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1680 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1681 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1682 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1683 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1684 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1685 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1686 btstack_run_loop_add_timer(&hci_stack->timeout); 1687 } 1688 break; 1689 } 1690 1691 /* fall through */ 1692 1693 case HCI_INIT_CUSTOM_INIT: 1694 // Custom initialization 1695 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1696 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1697 bool send_cmd = false; 1698 switch (hci_stack->chipset_result){ 1699 case BTSTACK_CHIPSET_VALID_COMMAND: 1700 send_cmd = true; 1701 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1702 break; 1703 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1704 send_cmd = true; 1705 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1706 log_info("CSR Warm Boot"); 1707 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1708 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1709 btstack_run_loop_add_timer(&hci_stack->timeout); 1710 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1711 && hci_stack->config 1712 && hci_stack->chipset 1713 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1714 && hci_stack->hci_transport->set_baudrate 1715 && hci_transport_uart_get_main_baud_rate()){ 1716 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1717 } else { 1718 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1719 } 1720 break; 1721 default: 1722 break; 1723 } 1724 1725 if (send_cmd){ 1726 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1727 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1728 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1729 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1730 break; 1731 } 1732 log_info("Init script done"); 1733 1734 // Init script download on Broadcom chipsets causes: 1735 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1736 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1737 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1738 1739 // - baud rate to reset, restore UART baud rate if needed 1740 if (need_baud_change) { 1741 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1742 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1743 hci_stack->hci_transport->set_baudrate(baud_rate); 1744 } 1745 1746 uint16_t bcm_delay_ms = 300; 1747 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1748 // -> Work around: wait here. 1749 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1750 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1751 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1752 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1753 btstack_run_loop_add_timer(&hci_stack->timeout); 1754 break; 1755 } 1756 } 1757 #endif 1758 /* fall through */ 1759 1760 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1761 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1762 hci_send_cmd(&hci_read_local_supported_commands); 1763 break; 1764 case HCI_INIT_READ_BD_ADDR: 1765 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1766 hci_send_cmd(&hci_read_bd_addr); 1767 break; 1768 case HCI_INIT_READ_BUFFER_SIZE: 1769 // only read buffer size if supported 1770 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1771 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1772 hci_send_cmd(&hci_read_buffer_size); 1773 break; 1774 } 1775 1776 /* fall through */ 1777 1778 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1779 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1780 hci_send_cmd(&hci_read_local_supported_features); 1781 break; 1782 1783 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1784 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1785 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1786 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1787 break; 1788 case HCI_INIT_HOST_BUFFER_SIZE: 1789 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1790 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1791 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1792 break; 1793 #endif 1794 1795 case HCI_INIT_SET_EVENT_MASK: 1796 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1797 if (hci_le_supported()){ 1798 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1799 } else { 1800 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1801 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1802 } 1803 break; 1804 1805 case HCI_INIT_SET_EVENT_MASK_2: 1806 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2)){ 1807 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1808 // Encryption Change Event v2 - bit 25 1809 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1810 break; 1811 } 1812 1813 #ifdef ENABLE_CLASSIC 1814 /* fall through */ 1815 1816 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1817 if (hci_classic_supported() && gap_ssp_supported()){ 1818 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1819 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1820 break; 1821 } 1822 1823 /* fall through */ 1824 1825 case HCI_INIT_WRITE_INQUIRY_MODE: 1826 if (hci_classic_supported()){ 1827 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1828 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1829 break; 1830 } 1831 1832 /* fall through */ 1833 1834 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1835 // skip write secure connections host support if not supported or disabled 1836 if (hci_classic_supported() && hci_stack->secure_connections_enable 1837 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1838 hci_stack->secure_connections_active = true; 1839 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1840 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1841 break; 1842 } 1843 1844 /* fall through */ 1845 1846 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 1847 // skip set min encryption key size 1848 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 1849 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 1850 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 1851 break; 1852 } 1853 1854 #ifdef ENABLE_SCO_OVER_HCI 1855 /* fall through */ 1856 1857 // only sent if ENABLE_SCO_OVER_HCI is defined 1858 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1859 // skip write synchronous flow control if not supported 1860 if (hci_classic_supported() 1861 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 1862 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1863 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1864 break; 1865 } 1866 /* fall through */ 1867 1868 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1869 // skip write default erroneous data reporting if not supported 1870 if (hci_classic_supported() 1871 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 1872 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1873 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1874 break; 1875 } 1876 #endif 1877 1878 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 1879 /* fall through */ 1880 1881 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1882 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1883 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1884 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1885 #ifdef ENABLE_SCO_OVER_HCI 1886 log_info("BCM: Route SCO data via HCI transport"); 1887 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1888 #endif 1889 #ifdef ENABLE_SCO_OVER_PCM 1890 log_info("BCM: Route SCO data via PCM interface"); 1891 #ifdef ENABLE_BCM_PCM_WBS 1892 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 1893 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1894 #else 1895 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1896 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1897 #endif 1898 #endif 1899 break; 1900 } 1901 #endif 1902 1903 #ifdef ENABLE_SCO_OVER_PCM 1904 /* fall through */ 1905 1906 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 1907 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1908 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 1909 log_info("BCM: Config PCM interface for I2S"); 1910 #ifdef ENABLE_BCM_PCM_WBS 1911 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 1912 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 1913 #else 1914 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1915 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 1916 #endif 1917 break; 1918 } 1919 #endif 1920 #endif 1921 1922 #ifdef ENABLE_BLE 1923 /* fall through */ 1924 1925 // LE INIT 1926 case HCI_INIT_LE_READ_BUFFER_SIZE: 1927 if (hci_le_supported()){ 1928 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 1929 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 1930 hci_send_cmd(&hci_le_read_buffer_size_v2); 1931 } else { 1932 hci_send_cmd(&hci_le_read_buffer_size); 1933 } 1934 break; 1935 } 1936 1937 /* fall through */ 1938 1939 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 1940 // skip write le host if not supported (e.g. on LE only EM9301) 1941 if (hci_le_supported() 1942 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 1943 // LE Supported Host = 1, Simultaneous Host = 0 1944 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 1945 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 1946 break; 1947 } 1948 1949 /* fall through */ 1950 1951 case HCI_INIT_LE_SET_EVENT_MASK: 1952 if (hci_le_supported()){ 1953 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 1954 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 1955 break; 1956 } 1957 #endif 1958 1959 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 1960 /* fall through */ 1961 1962 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 1963 if (hci_le_supported() 1964 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 1965 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 1966 hci_send_cmd(&hci_le_read_maximum_data_length); 1967 break; 1968 } 1969 1970 /* fall through */ 1971 1972 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 1973 if (hci_le_supported() 1974 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 1975 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 1976 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 1977 break; 1978 } 1979 #endif 1980 1981 #ifdef ENABLE_LE_CENTRAL 1982 /* fall through */ 1983 1984 case HCI_INIT_READ_WHITE_LIST_SIZE: 1985 if (hci_le_supported()){ 1986 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 1987 hci_send_cmd(&hci_le_read_white_list_size); 1988 break; 1989 } 1990 1991 #endif 1992 1993 #ifdef ENABLE_LE_PERIPHERAL 1994 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1995 /* fall through */ 1996 1997 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 1998 if (hci_extended_advertising_supported()){ 1999 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2000 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2001 break; 2002 } 2003 #endif 2004 #endif 2005 /* fall through */ 2006 2007 case HCI_INIT_DONE: 2008 hci_stack->substate = HCI_INIT_DONE; 2009 // main init sequence complete 2010 #ifdef ENABLE_CLASSIC 2011 // check if initial Classic GAP Tasks are completed 2012 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2013 hci_run_gap_tasks_classic(); 2014 break; 2015 } 2016 #endif 2017 #ifdef ENABLE_BLE 2018 #ifdef ENABLE_LE_CENTRAL 2019 // check if initial LE GAP Tasks are completed 2020 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2021 hci_run_general_gap_le(); 2022 break; 2023 } 2024 #endif 2025 #endif 2026 hci_init_done(); 2027 break; 2028 2029 default: 2030 return; 2031 } 2032 } 2033 2034 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2035 bool command_completed = false; 2036 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2037 uint16_t opcode = little_endian_read_16(packet,3); 2038 if (opcode == hci_stack->last_cmd_opcode){ 2039 command_completed = true; 2040 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2041 } else { 2042 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2043 } 2044 } 2045 2046 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2047 uint8_t status = packet[2]; 2048 uint16_t opcode = little_endian_read_16(packet,4); 2049 if (opcode == hci_stack->last_cmd_opcode){ 2050 if (status){ 2051 command_completed = true; 2052 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2053 } else { 2054 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2055 } 2056 } else { 2057 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2058 } 2059 } 2060 #ifndef HAVE_HOST_CONTROLLER_API 2061 // Vendor == CSR 2062 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2063 // TODO: track actual command 2064 command_completed = true; 2065 } 2066 2067 // Vendor == Toshiba 2068 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2069 // TODO: track actual command 2070 command_completed = true; 2071 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2072 hci_stack->num_cmd_packets = 1; 2073 } 2074 #endif 2075 2076 return command_completed; 2077 } 2078 2079 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2080 2081 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2082 2083 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2084 2085 #ifndef HAVE_HOST_CONTROLLER_API 2086 2087 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2088 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2089 // 2090 // HCI Reset 2091 // Timeout 100 ms 2092 // HCI Reset 2093 // Command Complete Reset 2094 // HCI Read Local Version Information 2095 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2096 // hang... 2097 // 2098 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2099 if (!command_completed 2100 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2101 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2102 2103 uint16_t opcode = little_endian_read_16(packet,3); 2104 if (opcode == hci_reset.opcode){ 2105 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2106 return; 2107 } 2108 } 2109 2110 // CSR & H5 2111 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2112 if (!command_completed 2113 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2114 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2115 2116 uint16_t opcode = little_endian_read_16(packet,3); 2117 if (opcode == hci_reset.opcode){ 2118 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2119 return; 2120 } 2121 } 2122 2123 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2124 // fix: Correct substate and behave as command below 2125 if (command_completed){ 2126 switch (hci_stack->substate){ 2127 case HCI_INIT_SEND_RESET: 2128 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2129 break; 2130 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2131 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2132 break; 2133 default: 2134 break; 2135 } 2136 } 2137 2138 #endif 2139 2140 if (!command_completed) return; 2141 2142 bool need_baud_change = false; 2143 bool need_addr_change = false; 2144 2145 #ifndef HAVE_HOST_CONTROLLER_API 2146 need_baud_change = hci_stack->config 2147 && hci_stack->chipset 2148 && hci_stack->chipset->set_baudrate_command 2149 && hci_stack->hci_transport->set_baudrate 2150 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2151 2152 need_addr_change = hci_stack->custom_bd_addr_set 2153 && hci_stack->chipset 2154 && hci_stack->chipset->set_bd_addr_command; 2155 #endif 2156 2157 switch(hci_stack->substate){ 2158 2159 #ifndef HAVE_HOST_CONTROLLER_API 2160 case HCI_INIT_SEND_RESET: 2161 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2162 // fix: just correct substate and behave as command below 2163 2164 /* fall through */ 2165 #endif 2166 2167 case HCI_INIT_W4_SEND_RESET: 2168 btstack_run_loop_remove_timer(&hci_stack->timeout); 2169 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2170 return; 2171 2172 #ifndef HAVE_HOST_CONTROLLER_API 2173 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2174 // for STLC2500D, baud rate change already happened. 2175 // for others, baud rate gets changed now 2176 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2177 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2178 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2179 hci_stack->hci_transport->set_baudrate(baud_rate); 2180 } 2181 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2182 return; 2183 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2184 btstack_run_loop_remove_timer(&hci_stack->timeout); 2185 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2186 return; 2187 case HCI_INIT_W4_CUSTOM_INIT: 2188 // repeat custom init 2189 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2190 return; 2191 #endif 2192 2193 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2194 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2195 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2196 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2197 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2198 return; 2199 } 2200 if (need_addr_change){ 2201 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2202 return; 2203 } 2204 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2205 return; 2206 #ifndef HAVE_HOST_CONTROLLER_API 2207 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2208 if (need_baud_change){ 2209 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2210 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2211 hci_stack->hci_transport->set_baudrate(baud_rate); 2212 } 2213 if (need_addr_change){ 2214 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2215 return; 2216 } 2217 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2218 return; 2219 case HCI_INIT_W4_SET_BD_ADDR: 2220 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2221 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2222 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2223 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2224 return; 2225 } 2226 // skipping st warm boot 2227 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2228 return; 2229 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2230 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2231 return; 2232 #endif 2233 2234 case HCI_INIT_DONE: 2235 // set state if we came here by fall through 2236 hci_stack->substate = HCI_INIT_DONE; 2237 return; 2238 2239 default: 2240 break; 2241 } 2242 hci_initializing_next_state(); 2243 } 2244 2245 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2246 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2247 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2248 // check if we have been aware of the HCI connection 2249 switch (conn->state){ 2250 case SENT_CREATE_CONNECTION: 2251 case RECEIVED_CONNECTION_REQUEST: 2252 break; 2253 default: 2254 return; 2255 } 2256 2257 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2258 bd_addr_t bd_address; 2259 (void)memcpy(&bd_address, conn->address, 6); 2260 2261 #ifdef ENABLE_CLASSIC 2262 // cache needed data 2263 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2264 #endif 2265 2266 // connection failed, remove entry 2267 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2268 btstack_memory_hci_connection_free( conn ); 2269 2270 #ifdef ENABLE_CLASSIC 2271 // notify client if dedicated bonding 2272 if (notify_dedicated_bonding_failed){ 2273 log_info("hci notify_dedicated_bonding_failed"); 2274 hci_emit_dedicated_bonding_result(bd_address, status); 2275 } 2276 2277 // if authentication error, also delete link key 2278 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2279 gap_drop_link_key_for_bd_addr(bd_address); 2280 } 2281 #else 2282 UNUSED(status); 2283 #endif 2284 } 2285 2286 #ifdef ENABLE_CLASSIC 2287 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2288 // SSP Controller 2289 if (features[6] & (1 << 3)){ 2290 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2291 } 2292 // eSCO 2293 if (features[3] & (1<<7)){ 2294 conn->remote_supported_features[0] |= 1; 2295 } 2296 // Extended features 2297 if (features[7] & (1<<7)){ 2298 conn->remote_supported_features[0] |= 2; 2299 } 2300 } 2301 2302 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2303 // SSP Host 2304 if (features[0] & (1 << 0)){ 2305 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2306 } 2307 // SC Host 2308 if (features[0] & (1 << 3)){ 2309 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2310 } 2311 } 2312 2313 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2314 // SC Controller 2315 if (features[1] & (1 << 0)){ 2316 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2317 } 2318 } 2319 2320 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2321 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2322 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2323 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2324 if (conn->bonding_flags & BONDING_DEDICATED){ 2325 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2326 } 2327 } 2328 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2329 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2330 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2331 } 2332 2333 #endif 2334 2335 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2336 // handle BT initialization 2337 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2338 hci_initializing_event_handler(packet, size); 2339 } 2340 2341 // help with BT sleep 2342 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2343 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2344 && (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_scan_enable))) { 2345 hci_initializing_next_state(); 2346 } 2347 } 2348 2349 #ifdef ENABLE_CLASSIC 2350 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2351 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2352 conn->encryption_key_size = encryption_key_size; 2353 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2354 2355 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2356 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2357 conn->bonding_flags &= ~BONDING_DEDICATED; 2358 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2359 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2360 return; 2361 } 2362 2363 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2364 conn->requested_security_level = LEVEL_0; 2365 hci_emit_security_level(conn->con_handle, security_level); 2366 return; 2367 } 2368 2369 // Request remote features if not already done 2370 hci_trigger_remote_features_for_connection(conn); 2371 2372 // Request Authentication if not already done 2373 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2374 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2375 } 2376 #endif 2377 2378 static void hci_store_local_supported_commands(const uint8_t * packet){ 2379 // create mapping table 2380 #define X(name, offset, bit) { offset, bit }, 2381 static struct { 2382 uint8_t byte_offset; 2383 uint8_t bit_position; 2384 } supported_hci_commands_map [] = { 2385 SUPPORTED_HCI_COMMANDS 2386 }; 2387 #undef X 2388 2389 // create names for debug purposes 2390 #ifdef ENABLE_LOG_DEBUG 2391 #define X(name, offset, bit) #name, 2392 static const char * command_names[] = { 2393 SUPPORTED_HCI_COMMANDS 2394 }; 2395 #undef X 2396 #endif 2397 2398 hci_stack->local_supported_commands = 0; 2399 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2400 uint16_t i; 2401 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2402 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2403 #ifdef ENABLE_LOG_DEBUG 2404 log_info("Command %s (%u) supported %u/%u", command_names[i], i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2405 #else 2406 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2407 #endif 2408 hci_stack->local_supported_commands |= (1LU << i); 2409 } 2410 } 2411 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2412 } 2413 2414 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2415 UNUSED(size); 2416 2417 uint16_t manufacturer; 2418 #ifdef ENABLE_CLASSIC 2419 hci_con_handle_t handle; 2420 hci_connection_t * conn; 2421 uint8_t status; 2422 #endif 2423 // get num cmd packets - limit to 1 to reduce complexity 2424 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2425 2426 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2427 switch (opcode){ 2428 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2429 if (packet[5]) break; 2430 // terminate, name 248 chars 2431 packet[6+248] = 0; 2432 log_info("local name: %s", &packet[6]); 2433 break; 2434 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2435 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2436 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2437 uint16_t acl_len = little_endian_read_16(packet, 6); 2438 uint16_t sco_len = packet[8]; 2439 2440 // determine usable ACL/SCO payload size 2441 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2442 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2443 2444 hci_stack->acl_packets_total_num = little_endian_read_16(packet, 9); 2445 hci_stack->sco_packets_total_num = little_endian_read_16(packet, 11); 2446 2447 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2448 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2449 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2450 } 2451 break; 2452 case HCI_OPCODE_HCI_READ_RSSI: 2453 if (packet[5] == ERROR_CODE_SUCCESS){ 2454 uint8_t event[5]; 2455 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2456 event[1] = 3; 2457 (void)memcpy(&event[2], &packet[6], 3); 2458 hci_emit_event(event, sizeof(event), 1); 2459 } 2460 break; 2461 #ifdef ENABLE_BLE 2462 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2463 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2464 hci_stack->le_iso_packets_total_num = packet[11]; 2465 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2466 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2467 2468 /* fall through */ 2469 2470 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2471 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2472 hci_stack->le_acl_packets_total_num = packet[8]; 2473 // determine usable ACL payload size 2474 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2475 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2476 } 2477 log_info("hci_le_read_buffer_size: acl size %u, acl count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2478 break; 2479 #endif 2480 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2481 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2482 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2483 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2484 log_info("hci_le_read_maximum_data_length: tx octets %u, tx time %u us", hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2485 break; 2486 #endif 2487 #ifdef ENABLE_LE_CENTRAL 2488 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2489 hci_stack->le_whitelist_capacity = packet[6]; 2490 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2491 break; 2492 #endif 2493 #ifdef ENABLE_LE_PERIPHERAL 2494 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2495 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2496 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2497 break; 2498 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2499 if (hci_stack->le_advertising_set_in_current_command != 0) { 2500 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2501 hci_stack->le_advertising_set_in_current_command = 0; 2502 if (advertising_set == NULL) break; 2503 uint8_t adv_status = packet[6]; 2504 uint8_t tx_power = packet[7]; 2505 uint8_t event[] = { HCI_EVENT_META_GAP, 4, GAP_SUBEVENT_ADVERTISING_SET_INSTALLED, hci_stack->le_advertising_set_in_current_command, adv_status, tx_power }; 2506 if (adv_status == 0){ 2507 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2508 } 2509 hci_emit_event(event, sizeof(event), 1); 2510 } 2511 break; 2512 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2513 if (hci_stack->le_advertising_set_in_current_command != 0) { 2514 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2515 hci_stack->le_advertising_set_in_current_command = 0; 2516 if (advertising_set == NULL) break; 2517 uint8_t adv_status = packet[5]; 2518 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2519 if (adv_status == 0){ 2520 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2521 } 2522 hci_emit_event(event, sizeof(event), 1); 2523 } 2524 break; 2525 #endif 2526 #endif 2527 case HCI_OPCODE_HCI_READ_BD_ADDR: 2528 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2529 log_info("Local Address, Status: 0x%02x: Addr: %s", packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE], bd_addr_to_str(hci_stack->local_bd_addr)); 2530 #ifdef ENABLE_CLASSIC 2531 if (hci_stack->link_key_db){ 2532 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2533 } 2534 #endif 2535 break; 2536 #ifdef ENABLE_CLASSIC 2537 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2538 hci_emit_discoverable_enabled(hci_stack->discoverable); 2539 break; 2540 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2541 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2542 if (status == ERROR_CODE_SUCCESS) { 2543 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2544 } else { 2545 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2546 } 2547 break; 2548 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2549 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2550 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2551 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2552 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2553 hci_emit_event(event, sizeof(event), 1); 2554 } 2555 break; 2556 #endif 2557 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2558 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2559 2560 #ifdef ENABLE_CLASSIC 2561 // determine usable ACL packet types based on host buffer size and supported features 2562 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2563 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2564 #endif 2565 // Classic/LE 2566 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2567 break; 2568 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2569 manufacturer = little_endian_read_16(packet, 10); 2570 // map Cypress to Broadcom 2571 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2572 log_info("Treat Cypress as Broadcom"); 2573 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2574 little_endian_store_16(packet, 10, manufacturer); 2575 } 2576 hci_stack->manufacturer = manufacturer; 2577 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2578 break; 2579 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2580 hci_store_local_supported_commands(packet); 2581 break; 2582 #ifdef ENABLE_CLASSIC 2583 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2584 if (packet[5]) return; 2585 hci_stack->synchronous_flow_control_enabled = 1; 2586 break; 2587 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2588 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2589 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2590 conn = hci_connection_for_handle(handle); 2591 if (conn != NULL) { 2592 uint8_t key_size = 0; 2593 if (status == 0){ 2594 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2595 log_info("Handle %04x key Size: %u", handle, key_size); 2596 } else { 2597 key_size = 1; 2598 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2599 } 2600 hci_handle_read_encryption_key_size_complete(conn, key_size); 2601 } 2602 break; 2603 // assert pairing complete event is emitted. 2604 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2605 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2606 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2607 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2608 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2609 // lookup connection by gap pairing addr 2610 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2611 if (conn == NULL) break; 2612 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2613 break; 2614 2615 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2616 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2617 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2618 uint8_t event[67]; 2619 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2620 event[1] = 65; 2621 (void)memset(&event[2], 0, 65); 2622 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2623 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2624 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2625 event[2] = 3; 2626 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2627 } else { 2628 event[2] = 1; 2629 } 2630 } 2631 hci_emit_event(event, sizeof(event), 0); 2632 break; 2633 } 2634 2635 // note: only needed if user does not provide OOB data 2636 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2637 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2638 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2639 if (conn == NULL) break; 2640 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2641 break; 2642 #endif 2643 #endif 2644 default: 2645 break; 2646 } 2647 } 2648 2649 #ifdef ENABLE_BLE 2650 static void event_handle_le_connection_complete(const uint8_t * packet){ 2651 bd_addr_t addr; 2652 bd_addr_type_t addr_type; 2653 hci_connection_t * conn; 2654 2655 // Connection management 2656 reverse_bd_addr(&packet[8], addr); 2657 addr_type = (bd_addr_type_t)packet[7]; 2658 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2659 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2660 2661 #ifdef ENABLE_LE_CENTRAL 2662 // handle error: error is reported only to the initiator -> outgoing connection 2663 if (packet[3]){ 2664 2665 // handle cancelled outgoing connection 2666 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2667 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2668 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2669 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2670 // reset state 2671 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2672 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2673 // get outgoing connection conn struct for direct connect 2674 conn = gap_get_outgoing_connection(); 2675 } 2676 2677 // outgoing le connection establishment is done 2678 if (conn){ 2679 // remove entry 2680 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2681 btstack_memory_hci_connection_free( conn ); 2682 } 2683 return; 2684 } 2685 #endif 2686 2687 // on success, both hosts receive connection complete event 2688 if (packet[6] == HCI_ROLE_MASTER){ 2689 #ifdef ENABLE_LE_CENTRAL 2690 // if we're master on an le connection, it was an outgoing connection and we're done with it 2691 // note: no hci_connection_t object exists yet for connect with whitelist 2692 if (hci_is_le_connection_type(addr_type)){ 2693 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2694 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2695 } 2696 #endif 2697 } else { 2698 #ifdef ENABLE_LE_PERIPHERAL 2699 // if we're slave, it was an incoming connection, advertisements have stopped 2700 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 2701 #endif 2702 } 2703 2704 // LE connections are auto-accepted, so just create a connection if there isn't one already 2705 if (!conn){ 2706 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2707 } 2708 2709 // no memory, sorry. 2710 if (!conn){ 2711 return; 2712 } 2713 2714 conn->state = OPEN; 2715 conn->role = packet[6]; 2716 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2717 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2718 2719 #ifdef ENABLE_LE_PERIPHERAL 2720 if (packet[6] == HCI_ROLE_SLAVE){ 2721 hci_update_advertisements_enabled_for_current_roles(); 2722 } 2723 #endif 2724 2725 // init unenhanced att bearer mtu 2726 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2727 conn->att_connection.mtu_exchanged = false; 2728 2729 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2730 2731 // restart timer 2732 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2733 // btstack_run_loop_add_timer(&conn->timeout); 2734 2735 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2736 2737 hci_emit_nr_connections_changed(); 2738 } 2739 #endif 2740 2741 #ifdef ENABLE_CLASSIC 2742 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){ 2743 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 2744 // LEVEL_4 is tested by l2cap 2745 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 2746 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 2747 if (level >= LEVEL_3){ 2748 // MITM not possible without keyboard or display 2749 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2750 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2751 2752 // MITM possible if one side has keyboard and the other has keyboard or display 2753 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2754 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2755 2756 // MITM not possible if one side has only display and other side has no keyboard 2757 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2758 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2759 } 2760 // LEVEL 2 requires SSP, which is a given 2761 return true; 2762 } 2763 2764 static bool btstack_is_null(uint8_t * data, uint16_t size){ 2765 uint16_t i; 2766 for (i=0; i < size ; i++){ 2767 if (data[i] != 0) { 2768 return false; 2769 } 2770 } 2771 return true; 2772 } 2773 2774 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 2775 // get requested security level 2776 gap_security_level_t requested_security_level = conn->requested_security_level; 2777 if (hci_stack->gap_secure_connections_only_mode){ 2778 requested_security_level = LEVEL_4; 2779 } 2780 2781 // assess security: LEVEL 4 requires SC 2782 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 2783 if ((requested_security_level == LEVEL_4) && 2784 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 2785 !hci_remote_sc_enabled(conn)){ 2786 log_info("Level 4 required, but SC not supported -> abort"); 2787 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2788 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2789 return; 2790 } 2791 2792 // assess security based on io capabilities 2793 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 2794 // responder: fully validate io caps of both sides as well as OOB data 2795 bool security_possible = false; 2796 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 2797 2798 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2799 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 2800 // so we merge the OOB data availability 2801 uint8_t have_oob_data = conn->io_cap_response_oob_data; 2802 if (conn->classic_oob_c_192 != NULL){ 2803 have_oob_data |= 1; 2804 } 2805 if (conn->classic_oob_c_256 != NULL){ 2806 have_oob_data |= 2; 2807 } 2808 // for up to Level 3, either P-192 as well as P-256 will do 2809 // 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 2810 // if remote does not SC, we should not receive P-256 data either 2811 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 2812 security_possible = true; 2813 } 2814 // for Level 4, P-256 is needed 2815 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 2816 security_possible = true; 2817 } 2818 #endif 2819 2820 if (security_possible == false){ 2821 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 2822 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2823 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2824 return; 2825 } 2826 } else { 2827 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 2828 #ifndef ENABLE_CLASSIC_PAIRING_OOB 2829 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 2830 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 2831 log_info("Level 3+ required, but no input/output -> abort"); 2832 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2833 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2834 return; 2835 } 2836 #endif 2837 #endif 2838 } 2839 2840 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 2841 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 2842 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 2843 } else { 2844 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2845 } 2846 #endif 2847 } 2848 2849 #endif 2850 2851 static void event_handler(uint8_t *packet, uint16_t size){ 2852 2853 uint16_t event_length = packet[1]; 2854 2855 // assert packet is complete 2856 if (size != (event_length + 2u)){ 2857 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 2858 return; 2859 } 2860 2861 bd_addr_type_t addr_type; 2862 hci_con_handle_t handle; 2863 hci_connection_t * conn; 2864 int i; 2865 int create_connection_cmd; 2866 2867 #ifdef ENABLE_CLASSIC 2868 hci_link_type_t link_type; 2869 bd_addr_t addr; 2870 #endif 2871 2872 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 2873 2874 switch (hci_event_packet_get_type(packet)) { 2875 2876 case HCI_EVENT_COMMAND_COMPLETE: 2877 handle_command_complete_event(packet, size); 2878 break; 2879 2880 case HCI_EVENT_COMMAND_STATUS: 2881 // get num cmd packets - limit to 1 to reduce complexity 2882 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2883 2884 // check command status to detected failed outgoing connections 2885 create_connection_cmd = 0; 2886 #ifdef ENABLE_CLASSIC 2887 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_create_connection)){ 2888 create_connection_cmd = 1; 2889 } 2890 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_accept_synchronous_connection)){ 2891 create_connection_cmd = 1; 2892 } 2893 #endif 2894 #ifdef ENABLE_LE_CENTRAL 2895 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_create_connection)){ 2896 create_connection_cmd = 1; 2897 } 2898 #endif 2899 if (create_connection_cmd) { 2900 uint8_t status = hci_event_command_status_get_status(packet); 2901 addr_type = hci_stack->outgoing_addr_type; 2902 conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2903 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); 2904 2905 // reset outgoing address info 2906 memset(hci_stack->outgoing_addr, 0, 6); 2907 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2908 2909 // on error 2910 if (status != ERROR_CODE_SUCCESS){ 2911 #ifdef ENABLE_LE_CENTRAL 2912 if (hci_is_le_connection_type(addr_type)){ 2913 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2914 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2915 } 2916 #endif 2917 // error => outgoing connection failed 2918 if (conn != NULL){ 2919 hci_handle_connection_failed(conn, status); 2920 } 2921 } 2922 } 2923 2924 #ifdef ENABLE_CLASSIC 2925 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_inquiry)){ 2926 uint8_t status = hci_event_command_status_get_status(packet); 2927 log_info("command status (inquiry), status %x", status); 2928 if (status == ERROR_CODE_SUCCESS) { 2929 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2930 } else { 2931 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2932 } 2933 } 2934 #endif 2935 break; 2936 2937 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 2938 if (size < 3) return; 2939 uint16_t num_handles = packet[2]; 2940 if (size != (3u + num_handles * 4u)) return; 2941 uint16_t offset = 3; 2942 for (i=0; i<num_handles;i++){ 2943 handle = little_endian_read_16(packet, offset) & 0x0fffu; 2944 offset += 2u; 2945 uint16_t num_packets = little_endian_read_16(packet, offset); 2946 offset += 2u; 2947 2948 conn = hci_connection_for_handle(handle); 2949 if (!conn){ 2950 log_error("hci_number_completed_packet lists unused con handle %u", handle); 2951 continue; 2952 } 2953 2954 if (conn->num_packets_sent >= num_packets){ 2955 conn->num_packets_sent -= num_packets; 2956 } else { 2957 log_error("hci_number_completed_packets, more packet slots freed then sent."); 2958 conn->num_packets_sent = 0; 2959 } 2960 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 2961 2962 #ifdef ENABLE_CLASSIC 2963 // For SCO, we do the can_send_now_check here 2964 hci_notify_if_sco_can_send_now(); 2965 #endif 2966 } 2967 break; 2968 } 2969 2970 #ifdef ENABLE_CLASSIC 2971 case HCI_EVENT_FLUSH_OCCURRED: 2972 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 2973 handle = hci_event_flush_occurred_get_handle(packet); 2974 conn = hci_connection_for_handle(handle); 2975 if (conn) { 2976 log_info("Flush occurred, disconnect 0x%04x", handle); 2977 conn->state = SEND_DISCONNECT; 2978 } 2979 break; 2980 2981 case HCI_EVENT_INQUIRY_COMPLETE: 2982 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 2983 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2984 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2985 hci_emit_event(event, sizeof(event), 1); 2986 } 2987 break; 2988 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 2989 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 2990 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 2991 } 2992 break; 2993 case HCI_EVENT_CONNECTION_REQUEST: 2994 reverse_bd_addr(&packet[2], addr); 2995 link_type = (hci_link_type_t) packet[11]; 2996 2997 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 2998 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 2999 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3000 bd_addr_copy(hci_stack->decline_addr, addr); 3001 break; 3002 } 3003 3004 if (hci_stack->gap_classic_accept_callback != NULL){ 3005 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3006 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3007 bd_addr_copy(hci_stack->decline_addr, addr); 3008 break; 3009 } 3010 } 3011 3012 // TODO: eval COD 8-10 3013 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3014 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3015 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3016 if (!conn) { 3017 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3018 } 3019 if (!conn) { 3020 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3021 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3022 bd_addr_copy(hci_stack->decline_addr, addr); 3023 hci_run(); 3024 // avoid event to higher layer 3025 return; 3026 } 3027 conn->role = HCI_ROLE_SLAVE; 3028 conn->state = RECEIVED_CONNECTION_REQUEST; 3029 // store info about eSCO 3030 if (link_type == HCI_LINK_TYPE_ESCO){ 3031 conn->remote_supported_features[0] |= 1; 3032 } 3033 hci_run(); 3034 break; 3035 3036 case HCI_EVENT_CONNECTION_COMPLETE: 3037 // Connection management 3038 reverse_bd_addr(&packet[5], addr); 3039 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3040 addr_type = BD_ADDR_TYPE_ACL; 3041 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3042 if (conn) { 3043 if (!packet[2]){ 3044 conn->state = OPEN; 3045 conn->con_handle = little_endian_read_16(packet, 3); 3046 3047 // trigger write supervision timeout if we're master 3048 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3049 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3050 } 3051 3052 // trigger write automatic flush timeout 3053 if (hci_stack->automatic_flush_timeout != 0){ 3054 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3055 } 3056 3057 // restart timer 3058 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3059 btstack_run_loop_add_timer(&conn->timeout); 3060 3061 // trigger remote features for dedicated bonding 3062 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3063 hci_trigger_remote_features_for_connection(conn); 3064 } 3065 3066 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3067 3068 hci_emit_nr_connections_changed(); 3069 } else { 3070 // connection failed 3071 hci_handle_connection_failed(conn, packet[2]); 3072 } 3073 } 3074 break; 3075 3076 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3077 reverse_bd_addr(&packet[5], addr); 3078 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3079 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3080 if (packet[2]){ 3081 // connection failed 3082 if (conn){ 3083 hci_handle_connection_failed(conn, packet[2]); 3084 } 3085 break; 3086 } 3087 if (!conn) { 3088 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3089 } 3090 if (!conn) { 3091 break; 3092 } 3093 conn->state = OPEN; 3094 conn->con_handle = little_endian_read_16(packet, 3); 3095 3096 #ifdef ENABLE_SCO_OVER_HCI 3097 // update SCO 3098 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3099 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3100 } 3101 // trigger can send now 3102 if (hci_have_usb_transport()){ 3103 hci_stack->sco_can_send_now = true; 3104 } 3105 #endif 3106 #ifdef HAVE_SCO_TRANSPORT 3107 // configure sco transport 3108 if (hci_stack->sco_transport != NULL){ 3109 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3110 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3111 } 3112 #endif 3113 break; 3114 3115 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3116 handle = little_endian_read_16(packet, 3); 3117 conn = hci_connection_for_handle(handle); 3118 if (!conn) break; 3119 if (!packet[2]){ 3120 const uint8_t * features = &packet[5]; 3121 hci_handle_remote_features_page_0(conn, features); 3122 3123 // read extended features if possible 3124 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3125 && ((conn->remote_supported_features[0] & 2) != 0)) { 3126 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3127 break; 3128 } 3129 } 3130 hci_handle_remote_features_received(conn); 3131 break; 3132 3133 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3134 handle = little_endian_read_16(packet, 3); 3135 conn = hci_connection_for_handle(handle); 3136 if (!conn) break; 3137 // status = ok, page = 1 3138 if (!packet[2]) { 3139 uint8_t page_number = packet[5]; 3140 uint8_t maximum_page_number = packet[6]; 3141 const uint8_t * features = &packet[7]; 3142 bool done = false; 3143 switch (page_number){ 3144 case 1: 3145 hci_handle_remote_features_page_1(conn, features); 3146 if (maximum_page_number >= 2){ 3147 // get Secure Connections (Controller) from Page 2 if available 3148 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3149 } else { 3150 // otherwise, assume SC (Controller) == SC (Host) 3151 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3152 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3153 } 3154 done = true; 3155 } 3156 break; 3157 case 2: 3158 hci_handle_remote_features_page_2(conn, features); 3159 done = true; 3160 break; 3161 default: 3162 break; 3163 } 3164 if (!done) break; 3165 } 3166 hci_handle_remote_features_received(conn); 3167 break; 3168 3169 case HCI_EVENT_LINK_KEY_REQUEST: 3170 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3171 hci_event_link_key_request_get_bd_addr(packet, addr); 3172 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3173 if (!conn) break; 3174 3175 // lookup link key in db if not cached 3176 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3177 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3178 } 3179 3180 // response sent by hci_run() 3181 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3182 #endif 3183 break; 3184 3185 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3186 hci_event_link_key_request_get_bd_addr(packet, addr); 3187 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3188 if (!conn) break; 3189 3190 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3191 3192 // CVE-2020-26555: ignore NULL link key 3193 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3194 if (btstack_is_null(&packet[8], 16)) break; 3195 3196 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3197 // Change Connection Encryption keeps link key type 3198 if (link_key_type != CHANGED_COMBINATION_KEY){ 3199 conn->link_key_type = link_key_type; 3200 } 3201 3202 // cache link key. link keys stored in little-endian format for legacy reasons 3203 memcpy(&conn->link_key, &packet[8], 16); 3204 3205 // only store link key: 3206 // - if bondable enabled 3207 if (hci_stack->bondable == false) break; 3208 // - if security level sufficient 3209 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3210 // - for SSP, also check if remote side requested bonding as well 3211 if (conn->link_key_type != COMBINATION_KEY){ 3212 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3213 if (!remote_bonding){ 3214 break; 3215 } 3216 } 3217 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3218 break; 3219 } 3220 3221 case HCI_EVENT_PIN_CODE_REQUEST: 3222 hci_event_pin_code_request_get_bd_addr(packet, addr); 3223 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3224 if (!conn) break; 3225 3226 hci_pairing_started(conn, false); 3227 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3228 if (!hci_stack->bondable ){ 3229 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3230 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3231 hci_run(); 3232 return; 3233 } 3234 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3235 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3236 log_info("Level 4 required, but SC not supported -> abort"); 3237 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3238 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3239 hci_run(); 3240 return; 3241 } 3242 break; 3243 3244 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3245 hci_event_io_capability_response_get_bd_addr(packet, addr); 3246 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3247 if (!conn) break; 3248 3249 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3250 hci_pairing_started(conn, true); 3251 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3252 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3253 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3254 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3255 #endif 3256 break; 3257 3258 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3259 hci_event_io_capability_response_get_bd_addr(packet, addr); 3260 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3261 if (!conn) break; 3262 3263 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3264 hci_connection_timestamp(conn); 3265 hci_pairing_started(conn, true); 3266 break; 3267 3268 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3269 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3270 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3271 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3272 if (!conn) break; 3273 3274 hci_connection_timestamp(conn); 3275 3276 hci_pairing_started(conn, true); 3277 3278 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3279 break; 3280 #endif 3281 3282 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3283 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3284 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3285 if (!conn) break; 3286 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3287 if (hci_stack->ssp_auto_accept){ 3288 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3289 }; 3290 } else { 3291 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3292 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3293 // don't forward event to app 3294 hci_run(); 3295 return; 3296 } 3297 break; 3298 3299 case HCI_EVENT_USER_PASSKEY_REQUEST: 3300 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3301 if (hci_stack->ssp_auto_accept){ 3302 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3303 }; 3304 break; 3305 3306 case HCI_EVENT_MODE_CHANGE: 3307 handle = hci_event_mode_change_get_handle(packet); 3308 conn = hci_connection_for_handle(handle); 3309 if (!conn) break; 3310 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3311 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3312 break; 3313 #endif 3314 3315 case HCI_EVENT_ENCRYPTION_CHANGE: 3316 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3317 handle = hci_event_encryption_change_get_connection_handle(packet); 3318 conn = hci_connection_for_handle(handle); 3319 if (!conn) break; 3320 if (hci_event_encryption_change_get_status(packet) == 0u) { 3321 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3322 if (encryption_enabled){ 3323 if (hci_is_le_connection(conn)){ 3324 // For LE, we accept connection as encrypted 3325 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3326 } 3327 #ifdef ENABLE_CLASSIC 3328 else { 3329 3330 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3331 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3332 bool connected_uses_aes_ccm = encryption_enabled == 2; 3333 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3334 log_info("SC during pairing, but only E0 now -> abort"); 3335 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3336 break; 3337 } 3338 3339 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3340 if (connected_uses_aes_ccm){ 3341 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3342 } 3343 3344 #ifdef ENABLE_TESTING_SUPPORT 3345 // work around for issue with PTS dongle 3346 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3347 #endif 3348 // validate encryption key size 3349 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3350 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3351 // already got encryption key size 3352 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3353 } else { 3354 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3355 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3356 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3357 } else { 3358 // if not, pretend everything is perfect 3359 hci_handle_read_encryption_key_size_complete(conn, 16); 3360 } 3361 } 3362 } 3363 #endif 3364 } else { 3365 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3366 } 3367 } else { 3368 uint8_t status = hci_event_encryption_change_get_status(packet); 3369 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3370 conn->bonding_flags &= ~BONDING_DEDICATED; 3371 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3372 conn->bonding_status = status; 3373 } 3374 } 3375 3376 break; 3377 3378 #ifdef ENABLE_CLASSIC 3379 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3380 handle = hci_event_authentication_complete_get_connection_handle(packet); 3381 conn = hci_connection_for_handle(handle); 3382 if (!conn) break; 3383 3384 // clear authentication active flag 3385 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3386 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3387 3388 // authenticated only if auth status == 0 3389 if (hci_event_authentication_complete_get_status(packet) == 0){ 3390 // authenticated 3391 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3392 3393 // If not already encrypted, start encryption 3394 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3395 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3396 break; 3397 } 3398 } 3399 3400 // emit updated security level 3401 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3402 break; 3403 3404 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3405 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3406 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3407 if (!conn) break; 3408 3409 // treat successfully paired connection as authenticated 3410 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3411 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3412 } 3413 3414 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3415 break; 3416 #endif 3417 3418 // HCI_EVENT_DISCONNECTION_COMPLETE 3419 // has been split, to first notify stack before shutting connection down 3420 // see end of function, too. 3421 case HCI_EVENT_DISCONNECTION_COMPLETE: 3422 if (packet[2]) break; // status != 0 3423 handle = little_endian_read_16(packet, 3); 3424 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3425 if (hci_stack->acl_fragmentation_total_size > 0u) { 3426 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3427 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3428 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3429 hci_stack->acl_fragmentation_total_size = 0; 3430 hci_stack->acl_fragmentation_pos = 0; 3431 if (release_buffer){ 3432 hci_release_packet_buffer(); 3433 } 3434 } 3435 } 3436 3437 conn = hci_connection_for_handle(handle); 3438 if (!conn) break; 3439 #ifdef ENABLE_CLASSIC 3440 // pairing failed if it was ongoing 3441 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3442 #endif 3443 3444 // emit dedicatd bonding event 3445 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3446 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3447 } 3448 3449 // mark connection for shutdown, stop timers, reset state 3450 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3451 hci_connection_stop_timer(conn); 3452 hci_connection_init(conn); 3453 3454 #ifdef ENABLE_BLE 3455 #ifdef ENABLE_LE_PERIPHERAL 3456 // re-enable advertisements for le connections if active 3457 if (hci_is_le_connection(conn)){ 3458 hci_update_advertisements_enabled_for_current_roles(); 3459 } 3460 #endif 3461 #endif 3462 break; 3463 3464 case HCI_EVENT_HARDWARE_ERROR: 3465 log_error("Hardware Error: 0x%02x", packet[2]); 3466 if (hci_stack->hardware_error_callback){ 3467 (*hci_stack->hardware_error_callback)(packet[2]); 3468 } else { 3469 // if no special requests, just reboot stack 3470 hci_power_control_off(); 3471 hci_power_control_on(); 3472 } 3473 break; 3474 3475 #ifdef ENABLE_CLASSIC 3476 case HCI_EVENT_ROLE_CHANGE: 3477 if (packet[2]) break; // status != 0 3478 reverse_bd_addr(&packet[3], addr); 3479 addr_type = BD_ADDR_TYPE_ACL; 3480 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3481 if (!conn) break; 3482 conn->role = packet[9]; 3483 break; 3484 #endif 3485 3486 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3487 // release packet buffer only for asynchronous transport and if there are not further fragements 3488 if (hci_transport_synchronous()) { 3489 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3490 return; // instead of break: to avoid re-entering hci_run() 3491 } 3492 hci_stack->acl_fragmentation_tx_active = 0; 3493 if (hci_stack->acl_fragmentation_total_size) break; 3494 hci_release_packet_buffer(); 3495 3496 // L2CAP receives this event via the hci_emit_event below 3497 3498 #ifdef ENABLE_CLASSIC 3499 // For SCO, we do the can_send_now_check here 3500 hci_notify_if_sco_can_send_now(); 3501 #endif 3502 break; 3503 3504 #ifdef ENABLE_CLASSIC 3505 case HCI_EVENT_SCO_CAN_SEND_NOW: 3506 // For SCO, we do the can_send_now_check here 3507 hci_stack->sco_can_send_now = true; 3508 hci_notify_if_sco_can_send_now(); 3509 return; 3510 3511 // explode inquriy results for easier consumption 3512 case HCI_EVENT_INQUIRY_RESULT: 3513 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3514 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3515 gap_inquiry_explode(packet, size); 3516 break; 3517 #endif 3518 3519 #ifdef ENABLE_BLE 3520 case HCI_EVENT_LE_META: 3521 switch (packet[2]){ 3522 #ifdef ENABLE_LE_CENTRAL 3523 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3524 if (!hci_stack->le_scanning_enabled) break; 3525 le_handle_advertisement_report(packet, size); 3526 break; 3527 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3528 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3529 if (!hci_stack->le_scanning_enabled) break; 3530 le_handle_extended_advertisement_report(packet, size); 3531 break; 3532 #endif 3533 #endif 3534 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3535 event_handle_le_connection_complete(packet); 3536 break; 3537 3538 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3539 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3540 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3541 conn = hci_connection_for_handle(handle); 3542 if (!conn) break; 3543 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3544 break; 3545 3546 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3547 // connection 3548 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3549 conn = hci_connection_for_handle(handle); 3550 if (conn) { 3551 // read arguments 3552 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3553 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3554 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3555 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3556 3557 // validate against current connection parameter range 3558 le_connection_parameter_range_t existing_range; 3559 gap_get_connection_parameter_range(&existing_range); 3560 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3561 if (update_parameter){ 3562 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3563 conn->le_conn_interval_min = le_conn_interval_min; 3564 conn->le_conn_interval_max = le_conn_interval_max; 3565 conn->le_conn_latency = le_conn_latency; 3566 conn->le_supervision_timeout = le_supervision_timeout; 3567 } else { 3568 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3569 } 3570 } 3571 break; 3572 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3573 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3574 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3575 conn = hci_connection_for_handle(handle); 3576 if (conn) { 3577 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3578 } 3579 break; 3580 #endif 3581 default: 3582 break; 3583 } 3584 break; 3585 #endif 3586 case HCI_EVENT_VENDOR_SPECIFIC: 3587 // Vendor specific commands often create vendor specific event instead of num completed packets 3588 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3589 switch (hci_stack->manufacturer){ 3590 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3591 hci_stack->num_cmd_packets = 1; 3592 break; 3593 default: 3594 break; 3595 } 3596 break; 3597 default: 3598 break; 3599 } 3600 3601 handle_event_for_current_stack_state(packet, size); 3602 3603 // notify upper stack 3604 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3605 3606 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3607 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3608 handle = little_endian_read_16(packet, 3); 3609 hci_connection_t * aConn = hci_connection_for_handle(handle); 3610 // discard connection if app did not trigger a reconnect in the event handler 3611 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3612 hci_shutdown_connection(aConn); 3613 } 3614 } 3615 3616 // execute main loop 3617 hci_run(); 3618 } 3619 3620 #ifdef ENABLE_CLASSIC 3621 3622 #ifdef ENABLE_SCO_OVER_HCI 3623 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3624 static void sco_schedule_tx(hci_connection_t * conn); 3625 3626 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3627 log_debug("SCO TX Timeout"); 3628 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3629 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3630 if (!conn) return; 3631 3632 // trigger send 3633 conn->sco_tx_ready = 1; 3634 // extra packet if CVSD but SCO buffer is too short 3635 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3636 conn->sco_tx_ready++; 3637 } 3638 hci_notify_if_sco_can_send_now(); 3639 } 3640 3641 3642 #define SCO_TX_AFTER_RX_MS (6) 3643 3644 static void sco_schedule_tx(hci_connection_t * conn){ 3645 3646 uint32_t now = btstack_run_loop_get_time_ms(); 3647 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 3648 int time_delta_ms = sco_tx_ms - now; 3649 3650 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 3651 3652 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 3653 btstack_run_loop_remove_timer(timer); 3654 btstack_run_loop_set_timer(timer, time_delta_ms); 3655 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 3656 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 3657 btstack_run_loop_add_timer(timer); 3658 } 3659 #endif 3660 3661 static void sco_handler(uint8_t * packet, uint16_t size){ 3662 // lookup connection struct 3663 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 3664 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3665 if (!conn) return; 3666 3667 #ifdef ENABLE_SCO_OVER_HCI 3668 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 3669 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 3670 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 3671 packet[2] = 0x3c; 3672 memmove(&packet[3], &packet[23], 63); 3673 size = 63; 3674 } 3675 } 3676 3677 if (hci_have_usb_transport()){ 3678 // Nothing to do 3679 } else { 3680 // 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); 3681 if (hci_stack->synchronous_flow_control_enabled == 0){ 3682 uint32_t now = btstack_run_loop_get_time_ms(); 3683 3684 if (!conn->sco_rx_valid){ 3685 // ignore first 10 packets 3686 conn->sco_rx_count++; 3687 // log_debug("sco rx count %u", conn->sco_rx_count); 3688 if (conn->sco_rx_count == 10) { 3689 // use first timestamp as is and pretent it just started 3690 conn->sco_rx_ms = now; 3691 conn->sco_rx_valid = 1; 3692 conn->sco_rx_count = 0; 3693 sco_schedule_tx(conn); 3694 } 3695 } else { 3696 // track expected arrival timme 3697 conn->sco_rx_count++; 3698 conn->sco_rx_ms += 7; 3699 int delta = (int32_t) (now - conn->sco_rx_ms); 3700 if (delta > 0){ 3701 conn->sco_rx_ms++; 3702 } 3703 // log_debug("sco rx %u", conn->sco_rx_ms); 3704 sco_schedule_tx(conn); 3705 } 3706 } 3707 } 3708 #endif 3709 3710 // deliver to app 3711 if (hci_stack->sco_packet_handler) { 3712 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 3713 } 3714 3715 #ifdef HAVE_SCO_TRANSPORT 3716 // We can send one packet for each received packet 3717 conn->sco_tx_ready++; 3718 hci_notify_if_sco_can_send_now(); 3719 #endif 3720 3721 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 3722 conn->num_packets_completed++; 3723 hci_stack->host_completed_packets = 1; 3724 hci_run(); 3725 #endif 3726 } 3727 #endif 3728 3729 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 3730 hci_dump_packet(packet_type, 1, packet, size); 3731 switch (packet_type) { 3732 case HCI_EVENT_PACKET: 3733 event_handler(packet, size); 3734 break; 3735 case HCI_ACL_DATA_PACKET: 3736 acl_handler(packet, size); 3737 break; 3738 #ifdef ENABLE_CLASSIC 3739 case HCI_SCO_DATA_PACKET: 3740 sco_handler(packet, size); 3741 break; 3742 #endif 3743 #ifdef ENABLE_BLE 3744 case HCI_ISO_DATA_PACKET: 3745 if (hci_stack->iso_packet_handler != NULL){ 3746 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 3747 } 3748 break; 3749 #endif 3750 default: 3751 break; 3752 } 3753 } 3754 3755 /** 3756 * @brief Add event packet handler. 3757 */ 3758 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3759 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3760 } 3761 3762 /** 3763 * @brief Remove event packet handler. 3764 */ 3765 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3766 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3767 } 3768 3769 /** Register HCI packet handlers */ 3770 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 3771 hci_stack->acl_packet_handler = handler; 3772 } 3773 3774 #ifdef ENABLE_CLASSIC 3775 /** 3776 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 3777 */ 3778 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 3779 hci_stack->sco_packet_handler = handler; 3780 } 3781 #endif 3782 3783 #ifdef ENABLE_BLE 3784 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 3785 hci_stack->iso_packet_handler = handler; 3786 } 3787 #endif 3788 3789 static void hci_state_reset(void){ 3790 // no connections yet 3791 hci_stack->connections = NULL; 3792 3793 // keep discoverable/connectable as this has been requested by the client(s) 3794 // hci_stack->discoverable = 0; 3795 // hci_stack->connectable = 0; 3796 // hci_stack->bondable = 1; 3797 // hci_stack->own_addr_type = 0; 3798 3799 // buffer is free 3800 hci_stack->hci_packet_buffer_reserved = false; 3801 3802 // no pending cmds 3803 hci_stack->decline_reason = 0; 3804 3805 hci_stack->secure_connections_active = false; 3806 3807 #ifdef ENABLE_CLASSIC 3808 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 3809 hci_stack->page_timeout = 0x6000; // ca. 15 sec 3810 3811 hci_stack->gap_tasks_classic = 3812 GAP_TASK_SET_DEFAULT_LINK_POLICY | 3813 GAP_TASK_SET_CLASS_OF_DEVICE | 3814 GAP_TASK_SET_LOCAL_NAME | 3815 GAP_TASK_SET_EIR_DATA | 3816 GAP_TASK_WRITE_SCAN_ENABLE | 3817 GAP_TASK_WRITE_PAGE_TIMEOUT; 3818 #endif 3819 3820 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3821 hci_stack->classic_read_local_oob_data = false; 3822 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3823 #endif 3824 3825 // LE 3826 #ifdef ENABLE_BLE 3827 memset(hci_stack->le_random_address, 0, 6); 3828 hci_stack->le_random_address_set = 0; 3829 #endif 3830 #ifdef ENABLE_LE_CENTRAL 3831 hci_stack->le_scanning_active = false; 3832 hci_stack->le_scanning_param_update = true; 3833 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3834 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3835 hci_stack->le_whitelist_capacity = 0; 3836 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3837 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 3838 #endif 3839 #endif 3840 #ifdef ENABLE_LE_PERIPHERAL 3841 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3842 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 3843 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 3844 } 3845 if (hci_stack->le_advertisements_data != NULL){ 3846 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 3847 } 3848 #endif 3849 } 3850 3851 #ifdef ENABLE_CLASSIC 3852 /** 3853 * @brief Configure Bluetooth hardware control. Has to be called before power on. 3854 */ 3855 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 3856 // store and open remote device db 3857 hci_stack->link_key_db = link_key_db; 3858 if (hci_stack->link_key_db) { 3859 hci_stack->link_key_db->open(); 3860 } 3861 } 3862 #endif 3863 3864 void hci_init(const hci_transport_t *transport, const void *config){ 3865 3866 #ifdef HAVE_MALLOC 3867 if (!hci_stack) { 3868 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 3869 } 3870 #else 3871 hci_stack = &hci_stack_static; 3872 #endif 3873 memset(hci_stack, 0, sizeof(hci_stack_t)); 3874 3875 // reference to use transport layer implementation 3876 hci_stack->hci_transport = transport; 3877 3878 // reference to used config 3879 hci_stack->config = config; 3880 3881 // setup pointer for outgoing packet buffer 3882 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 3883 3884 // max acl payload size defined in config.h 3885 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 3886 3887 // register packet handlers with transport 3888 transport->register_packet_handler(&packet_handler); 3889 3890 hci_stack->state = HCI_STATE_OFF; 3891 3892 // class of device 3893 hci_stack->class_of_device = 0x007a020c; // Smartphone 3894 3895 // bondable by default 3896 hci_stack->bondable = 1; 3897 3898 #ifdef ENABLE_CLASSIC 3899 // classic name 3900 hci_stack->local_name = default_classic_name; 3901 3902 // Master slave policy 3903 hci_stack->master_slave_policy = 1; 3904 3905 // Allow Role Switch 3906 hci_stack->allow_role_switch = 1; 3907 3908 // Default / minimum security level = 2 3909 hci_stack->gap_security_level = LEVEL_2; 3910 3911 // Default Security Mode 4 3912 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 3913 3914 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 3915 hci_stack->gap_required_encyrption_key_size = 7; 3916 3917 // Link Supervision Timeout 3918 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 3919 3920 #endif 3921 3922 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 3923 hci_stack->ssp_enable = 1; 3924 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 3925 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 3926 hci_stack->ssp_auto_accept = 1; 3927 3928 // Secure Connections: enable (requires support from Controller) 3929 hci_stack->secure_connections_enable = true; 3930 3931 // voice setting - signed 16 bit pcm data with CVSD over the air 3932 hci_stack->sco_voice_setting = 0x60; 3933 3934 #ifdef ENABLE_LE_CENTRAL 3935 // connection parameter to use for outgoing connections 3936 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 3937 hci_stack->le_connection_scan_window = 0x0030; // 30ms 3938 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 3939 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 3940 hci_stack->le_connection_latency = 4; // 4 3941 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 3942 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 3943 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 3944 3945 // default LE Scanning 3946 hci_stack->le_scan_type = 0x1; // active 3947 hci_stack->le_scan_interval = 0x1e0; // 300 ms 3948 hci_stack->le_scan_window = 0x30; // 30 ms 3949 #endif 3950 3951 #ifdef ENABLE_LE_PERIPHERAL 3952 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 3953 #endif 3954 3955 // connection parameter range used to answer connection parameter update requests in l2cap 3956 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 3957 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 3958 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 3959 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 3960 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 3961 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 3962 3963 hci_state_reset(); 3964 } 3965 3966 void hci_deinit(void){ 3967 btstack_run_loop_remove_timer(&hci_stack->timeout); 3968 #ifdef HAVE_MALLOC 3969 if (hci_stack) { 3970 free(hci_stack); 3971 } 3972 #endif 3973 hci_stack = NULL; 3974 3975 #ifdef ENABLE_CLASSIC 3976 disable_l2cap_timeouts = 0; 3977 #endif 3978 } 3979 3980 /** 3981 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 3982 */ 3983 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 3984 hci_stack->chipset = chipset_driver; 3985 3986 // reset chipset driver - init is also called on power_up 3987 if (hci_stack->chipset && hci_stack->chipset->init){ 3988 hci_stack->chipset->init(hci_stack->config); 3989 } 3990 } 3991 3992 /** 3993 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 3994 */ 3995 void hci_set_control(const btstack_control_t *hardware_control){ 3996 // references to used control implementation 3997 hci_stack->control = hardware_control; 3998 // init with transport config 3999 hardware_control->init(hci_stack->config); 4000 } 4001 4002 static void hci_discard_connections(void){ 4003 btstack_linked_list_iterator_t lit; 4004 btstack_linked_list_iterator_init(&lit, &hci_stack->connections); 4005 while (btstack_linked_list_iterator_has_next(&lit)){ 4006 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4007 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&lit); 4008 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4009 hci_shutdown_connection(connection); 4010 } 4011 } 4012 4013 void hci_close(void){ 4014 4015 #ifdef ENABLE_CLASSIC 4016 // close remote device db 4017 if (hci_stack->link_key_db) { 4018 hci_stack->link_key_db->close(); 4019 } 4020 #endif 4021 4022 hci_discard_connections(); 4023 4024 hci_power_control(HCI_POWER_OFF); 4025 4026 #ifdef HAVE_MALLOC 4027 free(hci_stack); 4028 #endif 4029 hci_stack = NULL; 4030 } 4031 4032 #ifdef HAVE_SCO_TRANSPORT 4033 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4034 hci_stack->sco_transport = sco_transport; 4035 sco_transport->register_packet_handler(&packet_handler); 4036 } 4037 #endif 4038 4039 #ifdef ENABLE_CLASSIC 4040 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4041 // validate ranage and set 4042 if (encryption_key_size < 7) return; 4043 if (encryption_key_size > 16) return; 4044 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4045 } 4046 4047 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4048 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4049 hci_stack->gap_security_mode = security_mode; 4050 return ERROR_CODE_SUCCESS; 4051 } else { 4052 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4053 } 4054 } 4055 4056 gap_security_mode_t gap_get_security_mode(void){ 4057 return hci_stack->gap_security_mode; 4058 } 4059 4060 void gap_set_security_level(gap_security_level_t security_level){ 4061 hci_stack->gap_security_level = security_level; 4062 } 4063 4064 gap_security_level_t gap_get_security_level(void){ 4065 if (hci_stack->gap_secure_connections_only_mode){ 4066 return LEVEL_4; 4067 } 4068 return hci_stack->gap_security_level; 4069 } 4070 4071 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4072 hci_stack->gap_minimal_service_security_level = security_level; 4073 } 4074 4075 void gap_set_secure_connections_only_mode(bool enable){ 4076 hci_stack->gap_secure_connections_only_mode = enable; 4077 } 4078 4079 bool gap_get_secure_connections_only_mode(void){ 4080 return hci_stack->gap_secure_connections_only_mode; 4081 } 4082 #endif 4083 4084 #ifdef ENABLE_CLASSIC 4085 void gap_set_class_of_device(uint32_t class_of_device){ 4086 hci_stack->class_of_device = class_of_device; 4087 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4088 hci_run(); 4089 } 4090 4091 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4092 hci_stack->default_link_policy_settings = default_link_policy_settings; 4093 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4094 hci_run(); 4095 } 4096 4097 void gap_set_allow_role_switch(bool allow_role_switch){ 4098 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4099 } 4100 4101 uint8_t hci_get_allow_role_switch(void){ 4102 return hci_stack->allow_role_switch; 4103 } 4104 4105 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4106 hci_stack->link_supervision_timeout = link_supervision_timeout; 4107 } 4108 4109 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4110 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4111 } 4112 4113 uint16_t hci_automatic_flush_timeout(void){ 4114 return hci_stack->automatic_flush_timeout; 4115 } 4116 4117 void hci_disable_l2cap_timeout_check(void){ 4118 disable_l2cap_timeouts = 1; 4119 } 4120 #endif 4121 4122 #ifndef HAVE_HOST_CONTROLLER_API 4123 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4124 void hci_set_bd_addr(bd_addr_t addr){ 4125 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4126 hci_stack->custom_bd_addr_set = 1; 4127 } 4128 #endif 4129 4130 // State-Module-Driver overview 4131 // state module low-level 4132 // HCI_STATE_OFF off close 4133 // HCI_STATE_INITIALIZING, on open 4134 // HCI_STATE_WORKING, on open 4135 // HCI_STATE_HALTING, on open 4136 // HCI_STATE_SLEEPING, off/sleep close 4137 // HCI_STATE_FALLING_ASLEEP on open 4138 4139 static int hci_power_control_on(void){ 4140 4141 // power on 4142 int err = 0; 4143 if (hci_stack->control && hci_stack->control->on){ 4144 err = (*hci_stack->control->on)(); 4145 } 4146 if (err){ 4147 log_error( "POWER_ON failed"); 4148 hci_emit_hci_open_failed(); 4149 return err; 4150 } 4151 4152 // int chipset driver 4153 if (hci_stack->chipset && hci_stack->chipset->init){ 4154 hci_stack->chipset->init(hci_stack->config); 4155 } 4156 4157 // init transport 4158 if (hci_stack->hci_transport->init){ 4159 hci_stack->hci_transport->init(hci_stack->config); 4160 } 4161 4162 // open transport 4163 err = hci_stack->hci_transport->open(); 4164 if (err){ 4165 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4166 if (hci_stack->control && hci_stack->control->off){ 4167 (*hci_stack->control->off)(); 4168 } 4169 hci_emit_hci_open_failed(); 4170 return err; 4171 } 4172 return 0; 4173 } 4174 4175 static void hci_power_control_off(void){ 4176 4177 log_info("hci_power_control_off"); 4178 4179 // close low-level device 4180 hci_stack->hci_transport->close(); 4181 4182 log_info("hci_power_control_off - hci_transport closed"); 4183 4184 // power off 4185 if (hci_stack->control && hci_stack->control->off){ 4186 (*hci_stack->control->off)(); 4187 } 4188 4189 log_info("hci_power_control_off - control closed"); 4190 4191 hci_stack->state = HCI_STATE_OFF; 4192 } 4193 4194 static void hci_power_control_sleep(void){ 4195 4196 log_info("hci_power_control_sleep"); 4197 4198 #if 0 4199 // don't close serial port during sleep 4200 4201 // close low-level device 4202 hci_stack->hci_transport->close(hci_stack->config); 4203 #endif 4204 4205 // sleep mode 4206 if (hci_stack->control && hci_stack->control->sleep){ 4207 (*hci_stack->control->sleep)(); 4208 } 4209 4210 hci_stack->state = HCI_STATE_SLEEPING; 4211 } 4212 4213 static int hci_power_control_wake(void){ 4214 4215 log_info("hci_power_control_wake"); 4216 4217 // wake on 4218 if (hci_stack->control && hci_stack->control->wake){ 4219 (*hci_stack->control->wake)(); 4220 } 4221 4222 #if 0 4223 // open low-level device 4224 int err = hci_stack->hci_transport->open(hci_stack->config); 4225 if (err){ 4226 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4227 if (hci_stack->control && hci_stack->control->off){ 4228 (*hci_stack->control->off)(); 4229 } 4230 hci_emit_hci_open_failed(); 4231 return err; 4232 } 4233 #endif 4234 4235 return 0; 4236 } 4237 4238 static void hci_power_enter_initializing_state(void){ 4239 // set up state machine 4240 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4241 hci_stack->hci_packet_buffer_reserved = false; 4242 hci_stack->state = HCI_STATE_INITIALIZING; 4243 hci_stack->substate = HCI_INIT_SEND_RESET; 4244 } 4245 4246 static void hci_power_enter_halting_state(void){ 4247 #ifdef ENABLE_BLE 4248 hci_whitelist_free(); 4249 #endif 4250 // see hci_run 4251 hci_stack->state = HCI_STATE_HALTING; 4252 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4253 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4254 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4255 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4256 btstack_run_loop_add_timer(&hci_stack->timeout); 4257 } 4258 4259 // returns error 4260 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4261 int err; 4262 switch (power_mode){ 4263 case HCI_POWER_ON: 4264 err = hci_power_control_on(); 4265 if (err != 0) { 4266 log_error("hci_power_control_on() error %d", err); 4267 return err; 4268 } 4269 hci_power_enter_initializing_state(); 4270 break; 4271 case HCI_POWER_OFF: 4272 // do nothing 4273 break; 4274 case HCI_POWER_SLEEP: 4275 // do nothing (with SLEEP == OFF) 4276 break; 4277 default: 4278 btstack_assert(false); 4279 break; 4280 } 4281 return ERROR_CODE_SUCCESS; 4282 } 4283 4284 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4285 switch (power_mode){ 4286 case HCI_POWER_ON: 4287 // do nothing 4288 break; 4289 case HCI_POWER_OFF: 4290 // no connections yet, just turn it off 4291 hci_power_control_off(); 4292 break; 4293 case HCI_POWER_SLEEP: 4294 // no connections yet, just turn it off 4295 hci_power_control_sleep(); 4296 break; 4297 default: 4298 btstack_assert(false); 4299 break; 4300 } 4301 return ERROR_CODE_SUCCESS; 4302 } 4303 4304 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4305 switch (power_mode){ 4306 case HCI_POWER_ON: 4307 // do nothing 4308 break; 4309 case HCI_POWER_OFF: 4310 hci_power_enter_halting_state(); 4311 break; 4312 case HCI_POWER_SLEEP: 4313 // see hci_run 4314 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4315 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4316 break; 4317 default: 4318 btstack_assert(false); 4319 break; 4320 } 4321 return ERROR_CODE_SUCCESS; 4322 } 4323 4324 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4325 switch (power_mode){ 4326 case HCI_POWER_ON: 4327 hci_power_enter_initializing_state(); 4328 break; 4329 case HCI_POWER_OFF: 4330 // do nothing 4331 break; 4332 case HCI_POWER_SLEEP: 4333 // see hci_run 4334 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4335 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4336 break; 4337 default: 4338 btstack_assert(false); 4339 break; 4340 } 4341 return ERROR_CODE_SUCCESS; 4342 } 4343 4344 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4345 switch (power_mode){ 4346 case HCI_POWER_ON: 4347 hci_power_enter_initializing_state(); 4348 break; 4349 case HCI_POWER_OFF: 4350 hci_power_enter_halting_state(); 4351 break; 4352 case HCI_POWER_SLEEP: 4353 // do nothing 4354 break; 4355 default: 4356 btstack_assert(false); 4357 break; 4358 } 4359 return ERROR_CODE_SUCCESS; 4360 } 4361 4362 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4363 int err; 4364 switch (power_mode){ 4365 case HCI_POWER_ON: 4366 err = hci_power_control_wake(); 4367 if (err) return err; 4368 hci_power_enter_initializing_state(); 4369 break; 4370 case HCI_POWER_OFF: 4371 hci_power_enter_halting_state(); 4372 break; 4373 case HCI_POWER_SLEEP: 4374 // do nothing 4375 break; 4376 default: 4377 btstack_assert(false); 4378 break; 4379 } 4380 return ERROR_CODE_SUCCESS; 4381 } 4382 4383 int hci_power_control(HCI_POWER_MODE power_mode){ 4384 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4385 int err = 0; 4386 switch (hci_stack->state){ 4387 case HCI_STATE_OFF: 4388 err = hci_power_control_state_off(power_mode); 4389 break; 4390 case HCI_STATE_INITIALIZING: 4391 err = hci_power_control_state_initializing(power_mode); 4392 break; 4393 case HCI_STATE_WORKING: 4394 err = hci_power_control_state_working(power_mode); 4395 break; 4396 case HCI_STATE_HALTING: 4397 err = hci_power_control_state_halting(power_mode); 4398 break; 4399 case HCI_STATE_FALLING_ASLEEP: 4400 err = hci_power_control_state_falling_asleep(power_mode); 4401 break; 4402 case HCI_STATE_SLEEPING: 4403 err = hci_power_control_state_sleeping(power_mode); 4404 break; 4405 default: 4406 btstack_assert(false); 4407 break; 4408 } 4409 if (err != 0){ 4410 return err; 4411 } 4412 4413 // create internal event 4414 hci_emit_state(); 4415 4416 // trigger next/first action 4417 hci_run(); 4418 4419 return 0; 4420 } 4421 4422 4423 static void hci_halting_run(void) { 4424 4425 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4426 4427 hci_connection_t *connection; 4428 #ifdef ENABLE_BLE 4429 #ifdef ENABLE_LE_PERIPHERAL 4430 bool stop_advertismenets; 4431 #endif 4432 #endif 4433 4434 switch (hci_stack->substate) { 4435 case HCI_HALTING_CLASSIC_STOP: 4436 #ifdef ENABLE_CLASSIC 4437 if (!hci_can_send_command_packet_now()) return; 4438 4439 if (hci_stack->connectable || hci_stack->discoverable){ 4440 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4441 hci_send_cmd(&hci_write_scan_enable, 0); 4442 return; 4443 } 4444 #endif 4445 /* fall through */ 4446 4447 case HCI_HALTING_LE_ADV_STOP: 4448 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4449 4450 #ifdef ENABLE_BLE 4451 #ifdef ENABLE_LE_PERIPHERAL 4452 if (!hci_can_send_command_packet_now()) return; 4453 4454 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4455 4456 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4457 if (hci_extended_advertising_supported()){ 4458 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4459 btstack_linked_list_iterator_t it; 4460 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4461 // stop all periodic advertisements and check if an extended set is active 4462 while (btstack_linked_list_iterator_has_next(&it)){ 4463 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4464 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4465 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4466 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4467 return; 4468 } 4469 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4470 stop_advertismenets = true; 4471 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4472 } 4473 } 4474 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4475 if (stop_advertismenets){ 4476 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4477 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4478 return; 4479 } 4480 } 4481 else 4482 #else 4483 { 4484 if (stop_advertismenets) { 4485 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4486 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4487 return; 4488 } 4489 } 4490 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4491 #endif /* ENABLE_LE_PERIPHERAL */ 4492 #endif /* ENABLE_BLE */ 4493 4494 /* fall through */ 4495 4496 case HCI_HALTING_LE_SCAN_STOP: 4497 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4498 if (!hci_can_send_command_packet_now()) return; 4499 4500 #ifdef ENABLE_BLE 4501 #ifdef ENABLE_LE_CENTRAL 4502 if (hci_stack->le_scanning_active){ 4503 hci_le_scan_stop(); 4504 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4505 return; 4506 } 4507 #endif 4508 #endif 4509 4510 /* fall through */ 4511 4512 case HCI_HALTING_DISCONNECT_ALL: 4513 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4514 if (!hci_can_send_command_packet_now()) return; 4515 4516 // close all open connections 4517 connection = (hci_connection_t *) hci_stack->connections; 4518 if (connection) { 4519 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4520 4521 // check state 4522 if (connection->state == SENT_DISCONNECT) return; 4523 connection->state = SENT_DISCONNECT; 4524 4525 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4526 4527 // finally, send the disconnect command 4528 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4529 return; 4530 } 4531 4532 btstack_run_loop_remove_timer(&hci_stack->timeout); 4533 4534 hci_stack->substate = HCI_HALTING_READY_FOR_CLOSE; 4535 4536 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4537 log_info("HCI_STATE_HALTING: wait 50 ms"); 4538 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4539 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4540 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4541 btstack_run_loop_add_timer(&hci_stack->timeout); 4542 break; 4543 4544 case HCI_HALTING_CLOSE: 4545 // close left over connections (that had not been properly closed before) 4546 hci_discard_connections(); 4547 4548 log_info("HCI_STATE_HALTING, calling off"); 4549 4550 // switch mode 4551 hci_power_control_off(); 4552 4553 log_info("HCI_STATE_HALTING, emitting state"); 4554 hci_emit_state(); 4555 log_info("HCI_STATE_HALTING, done"); 4556 break; 4557 4558 case HCI_HALTING_W4_CLOSE_TIMER: 4559 // keep waiting 4560 4561 break; 4562 default: 4563 break; 4564 } 4565 }; 4566 4567 static void hci_falling_asleep_run(void){ 4568 hci_connection_t * connection; 4569 switch(hci_stack->substate) { 4570 case HCI_FALLING_ASLEEP_DISCONNECT: 4571 log_info("HCI_STATE_FALLING_ASLEEP"); 4572 // close all open connections 4573 connection = (hci_connection_t *) hci_stack->connections; 4574 if (connection){ 4575 4576 // send disconnect 4577 if (!hci_can_send_command_packet_now()) return; 4578 4579 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4580 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4581 4582 // send disconnected event right away - causes higher layer connections to get closed, too. 4583 hci_shutdown_connection(connection); 4584 return; 4585 } 4586 4587 if (hci_classic_supported()){ 4588 // disable page and inquiry scan 4589 if (!hci_can_send_command_packet_now()) return; 4590 4591 log_info("HCI_STATE_HALTING, disabling inq scans"); 4592 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4593 4594 // continue in next sub state 4595 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4596 break; 4597 } 4598 4599 /* fall through */ 4600 4601 case HCI_FALLING_ASLEEP_COMPLETE: 4602 log_info("HCI_STATE_HALTING, calling sleep"); 4603 // switch mode 4604 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4605 hci_emit_state(); 4606 break; 4607 4608 default: 4609 break; 4610 } 4611 } 4612 4613 #ifdef ENABLE_CLASSIC 4614 4615 static void hci_update_scan_enable(void){ 4616 // 2 = page scan, 1 = inq scan 4617 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4618 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4619 hci_run(); 4620 } 4621 4622 void gap_discoverable_control(uint8_t enable){ 4623 if (enable) enable = 1; // normalize argument 4624 4625 if (hci_stack->discoverable == enable){ 4626 hci_emit_discoverable_enabled(hci_stack->discoverable); 4627 return; 4628 } 4629 4630 hci_stack->discoverable = enable; 4631 hci_update_scan_enable(); 4632 } 4633 4634 void gap_connectable_control(uint8_t enable){ 4635 if (enable) enable = 1; // normalize argument 4636 4637 // don't emit event 4638 if (hci_stack->connectable == enable) return; 4639 4640 hci_stack->connectable = enable; 4641 hci_update_scan_enable(); 4642 } 4643 #endif 4644 4645 void gap_local_bd_addr(bd_addr_t address_buffer){ 4646 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 4647 } 4648 4649 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4650 static void hci_host_num_completed_packets(void){ 4651 4652 // create packet manually as arrays are not supported and num_commands should not get reduced 4653 hci_reserve_packet_buffer(); 4654 uint8_t * packet = hci_get_outgoing_packet_buffer(); 4655 4656 uint16_t size = 0; 4657 uint16_t num_handles = 0; 4658 packet[size++] = 0x35; 4659 packet[size++] = 0x0c; 4660 size++; // skip param len 4661 size++; // skip num handles 4662 4663 // add { handle, packets } entries 4664 btstack_linked_item_t * it; 4665 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 4666 hci_connection_t * connection = (hci_connection_t *) it; 4667 if (connection->num_packets_completed){ 4668 little_endian_store_16(packet, size, connection->con_handle); 4669 size += 2; 4670 little_endian_store_16(packet, size, connection->num_packets_completed); 4671 size += 2; 4672 // 4673 num_handles++; 4674 connection->num_packets_completed = 0; 4675 } 4676 } 4677 4678 packet[2] = size - 3; 4679 packet[3] = num_handles; 4680 4681 hci_stack->host_completed_packets = 0; 4682 4683 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 4684 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 4685 4686 // release packet buffer for synchronous transport implementations 4687 if (hci_transport_synchronous()){ 4688 hci_release_packet_buffer(); 4689 hci_emit_transport_packet_sent(); 4690 } 4691 } 4692 #endif 4693 4694 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 4695 UNUSED(ds); 4696 hci_stack->substate = HCI_HALTING_CLOSE; 4697 // allow packet handlers to defer final shutdown 4698 hci_emit_state(); 4699 hci_run(); 4700 } 4701 4702 static bool hci_run_acl_fragments(void){ 4703 if (hci_stack->acl_fragmentation_total_size > 0u) { 4704 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 4705 hci_connection_t *connection = hci_connection_for_handle(con_handle); 4706 if (connection) { 4707 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 4708 hci_send_acl_packet_fragments(connection); 4709 return true; 4710 } 4711 } else { 4712 // connection gone -> discard further fragments 4713 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 4714 hci_stack->acl_fragmentation_total_size = 0; 4715 hci_stack->acl_fragmentation_pos = 0; 4716 } 4717 } 4718 return false; 4719 } 4720 4721 #ifdef ENABLE_CLASSIC 4722 4723 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4724 static bool hci_classic_operation_active(void) { 4725 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 4726 return true; 4727 } 4728 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 4729 return true; 4730 } 4731 btstack_linked_item_t * it; 4732 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 4733 hci_connection_t *connection = (hci_connection_t *) it; 4734 switch (connection->state) { 4735 case SENT_CREATE_CONNECTION: 4736 case SENT_CANCEL_CONNECTION: 4737 case SENT_DISCONNECT: 4738 return true; 4739 default: 4740 break; 4741 } 4742 } 4743 return false; 4744 } 4745 #endif 4746 4747 static bool hci_run_general_gap_classic(void){ 4748 4749 // assert stack is working and classic is active 4750 if (hci_classic_supported() == false) return false; 4751 if (hci_stack->state != HCI_STATE_WORKING) return false; 4752 4753 // decline incoming connections 4754 if (hci_stack->decline_reason){ 4755 uint8_t reason = hci_stack->decline_reason; 4756 hci_stack->decline_reason = 0; 4757 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 4758 return true; 4759 } 4760 4761 if (hci_stack->gap_tasks_classic != 0){ 4762 hci_run_gap_tasks_classic(); 4763 return true; 4764 } 4765 4766 // start/stop inquiry 4767 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 4768 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4769 if (hci_classic_operation_active() == false) 4770 #endif 4771 { 4772 uint8_t duration = hci_stack->inquiry_state; 4773 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 4774 if (hci_stack->inquiry_max_period_length != 0){ 4775 hci_send_cmd(&hci_periodic_inquiry_mode, hci_stack->inquiry_max_period_length, hci_stack->inquiry_min_period_length, hci_stack->inquiry_lap, duration, 0); 4776 } else { 4777 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 4778 } 4779 return true; 4780 } 4781 } 4782 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 4783 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 4784 hci_send_cmd(&hci_inquiry_cancel); 4785 return true; 4786 } 4787 4788 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 4789 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_EXIT_PERIODIC_COMPLETE; 4790 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 4791 return true; 4792 } 4793 4794 // remote name request 4795 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 4796 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4797 if (hci_classic_operation_active() == false) 4798 #endif 4799 { 4800 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 4801 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 4802 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 4803 return true; 4804 } 4805 } 4806 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4807 // Local OOB data 4808 if (hci_stack->classic_read_local_oob_data){ 4809 hci_stack->classic_read_local_oob_data = false; 4810 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 4811 hci_send_cmd(&hci_read_local_extended_oob_data); 4812 } else { 4813 hci_send_cmd(&hci_read_local_oob_data); 4814 } 4815 } 4816 #endif 4817 // pairing 4818 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 4819 uint8_t state = hci_stack->gap_pairing_state; 4820 uint8_t pin_code[16]; 4821 switch (state){ 4822 case GAP_PAIRING_STATE_SEND_PIN: 4823 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4824 memset(pin_code, 0, 16); 4825 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 4826 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 4827 break; 4828 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 4829 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4830 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 4831 break; 4832 case GAP_PAIRING_STATE_SEND_PASSKEY: 4833 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4834 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 4835 break; 4836 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 4837 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4838 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 4839 break; 4840 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 4841 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4842 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 4843 break; 4844 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 4845 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4846 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 4847 break; 4848 default: 4849 break; 4850 } 4851 return true; 4852 } 4853 return false; 4854 } 4855 #endif 4856 4857 #ifdef ENABLE_BLE 4858 4859 #ifdef ENABLE_LE_CENTRAL 4860 static void hci_le_scan_stop(void){ 4861 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4862 if (hci_extended_advertising_supported()) { 4863 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 4864 } else 4865 #endif 4866 { 4867 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 4868 } 4869 } 4870 #endif 4871 4872 #ifdef ENABLE_LE_PERIPHERAL 4873 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4874 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 4875 uint8_t operation = 0; 4876 if (pos == 0){ 4877 // first fragment or complete data 4878 operation |= 1; 4879 } 4880 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 4881 // last fragment or complete data 4882 operation |= 2; 4883 } 4884 return operation; 4885 } 4886 #endif 4887 #endif 4888 4889 static bool hci_run_general_gap_le(void){ 4890 4891 btstack_linked_list_iterator_t lit; 4892 4893 // Phase 1: collect what to stop 4894 4895 #ifdef ENABLE_LE_CENTRAL 4896 bool scanning_stop = false; 4897 bool connecting_stop = false; 4898 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4899 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4900 bool periodic_sync_stop = false; 4901 #endif 4902 #endif 4903 #endif 4904 4905 #ifdef ENABLE_LE_PERIPHERAL 4906 bool advertising_stop = false; 4907 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4908 le_advertising_set_t * advertising_stop_set = NULL; 4909 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4910 bool periodic_advertising_stop = false; 4911 #endif 4912 #endif 4913 #endif 4914 4915 // check if own address changes 4916 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 4917 4918 // check if whitelist needs modification 4919 bool whitelist_modification_pending = false; 4920 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 4921 while (btstack_linked_list_iterator_has_next(&lit)){ 4922 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 4923 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 4924 whitelist_modification_pending = true; 4925 break; 4926 } 4927 } 4928 4929 // check if resolving list needs modification 4930 bool resolving_list_modification_pending = false; 4931 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 4932 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 4933 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 4934 resolving_list_modification_pending = true; 4935 } 4936 #endif 4937 4938 #ifdef ENABLE_LE_CENTRAL 4939 4940 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4941 // check if periodic advertiser list needs modification 4942 bool periodic_list_modification_pending = false; 4943 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 4944 while (btstack_linked_list_iterator_has_next(&lit)){ 4945 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 4946 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 4947 periodic_list_modification_pending = true; 4948 break; 4949 } 4950 } 4951 #endif 4952 4953 // scanning control 4954 if (hci_stack->le_scanning_active) { 4955 // stop if: 4956 // - parameter change required 4957 // - it's disabled 4958 // - whitelist change required but used for scanning 4959 // - resolving list modified 4960 // - own address changes 4961 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 4962 if ((hci_stack->le_scanning_param_update) || 4963 !hci_stack->le_scanning_enabled || 4964 (scanning_uses_whitelist && whitelist_modification_pending) || 4965 resolving_list_modification_pending || 4966 random_address_change){ 4967 4968 scanning_stop = true; 4969 } 4970 } 4971 4972 // connecting control 4973 bool connecting_with_whitelist; 4974 switch (hci_stack->le_connecting_state){ 4975 case LE_CONNECTING_DIRECT: 4976 case LE_CONNECTING_WHITELIST: 4977 // stop connecting if: 4978 // - connecting uses white and whitelist modification pending 4979 // - if it got disabled 4980 // - resolving list modified 4981 // - own address changes 4982 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 4983 if ((connecting_with_whitelist && whitelist_modification_pending) || 4984 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 4985 resolving_list_modification_pending || 4986 random_address_change) { 4987 4988 connecting_stop = true; 4989 } 4990 break; 4991 default: 4992 break; 4993 } 4994 4995 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4996 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4997 // periodic sync control 4998 bool sync_with_advertiser_list; 4999 switch(hci_stack->le_periodic_sync_state){ 5000 case LE_CONNECTING_DIRECT: 5001 case LE_CONNECTING_WHITELIST: 5002 // stop sync if: 5003 // - sync with advertiser list and advertiser list modification pending 5004 // - if it got disabled 5005 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5006 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5007 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5008 periodic_sync_stop = true; 5009 } 5010 break; 5011 default: 5012 break; 5013 } 5014 #endif 5015 #endif 5016 5017 #endif /* ENABLE_LE_CENTRAL */ 5018 5019 #ifdef ENABLE_LE_PERIPHERAL 5020 // le advertisement control 5021 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5022 // stop if: 5023 // - parameter change required 5024 // - random address used in advertising and changes 5025 // - it's disabled 5026 // - whitelist change required but used for advertisement filter policy 5027 // - resolving list modified 5028 // - own address changes 5029 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5030 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5031 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5032 if (advertising_change || 5033 (advertising_uses_random_address && random_address_change) || 5034 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5035 (advertising_uses_whitelist && whitelist_modification_pending) || 5036 resolving_list_modification_pending || 5037 random_address_change) { 5038 5039 advertising_stop = true; 5040 } 5041 } 5042 5043 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5044 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5045 btstack_linked_list_iterator_t it; 5046 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5047 while (btstack_linked_list_iterator_has_next(&it)){ 5048 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5049 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5050 // stop if: 5051 // - parameter change required 5052 // - random address used in connectable advertising and changes 5053 // - it's disabled 5054 // - whitelist change required but used for advertisement filter policy 5055 // - resolving list modified 5056 // - own address changes 5057 // - advertisement set will be removed 5058 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5059 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5060 bool advertising_uses_random_address = 5061 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5062 advertising_connectable; 5063 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5064 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5065 bool advertising_set_random_address_change = 5066 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5067 bool advertising_set_will_be_removed = 5068 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5069 if (advertising_parameter_change || 5070 (advertising_uses_random_address && advertising_set_random_address_change) || 5071 (advertising_enabled == false) || 5072 (advertising_uses_whitelist && whitelist_modification_pending) || 5073 resolving_list_modification_pending || 5074 advertising_set_will_be_removed) { 5075 5076 advertising_stop = true; 5077 advertising_stop_set = advertising_set; 5078 break; 5079 } 5080 } 5081 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5082 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5083 // stop if: 5084 // - it's disabled 5085 // - parameter change required 5086 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5087 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5088 if ((periodic_enabled == false) || periodic_parameter_change){ 5089 periodic_advertising_stop = true; 5090 advertising_stop_set = advertising_set; 5091 } 5092 } 5093 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5094 } 5095 } 5096 #endif 5097 5098 #endif 5099 5100 5101 // Phase 2: stop everything that should be off during modifications 5102 5103 #ifdef ENABLE_LE_CENTRAL 5104 if (scanning_stop){ 5105 hci_stack->le_scanning_active = false; 5106 hci_le_scan_stop(); 5107 return true; 5108 } 5109 5110 if (connecting_stop){ 5111 hci_send_cmd(&hci_le_create_connection_cancel); 5112 return true; 5113 } 5114 5115 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5116 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5117 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5118 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5119 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5120 return true; 5121 } 5122 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5123 if (periodic_sync_stop){ 5124 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5125 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5126 return true; 5127 } 5128 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5129 #endif 5130 #endif 5131 5132 #ifdef ENABLE_LE_PERIPHERAL 5133 if (advertising_stop){ 5134 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5135 if (hci_extended_advertising_supported()) { 5136 uint8_t advertising_stop_handle; 5137 if (advertising_stop_set != NULL){ 5138 advertising_stop_handle = advertising_stop_set->advertising_handle; 5139 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5140 } else { 5141 advertising_stop_handle = 0; 5142 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5143 } 5144 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5145 const uint16_t durations[] = { 0 }; 5146 const uint16_t max_events[] = { 0 }; 5147 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5148 } else 5149 #endif 5150 { 5151 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5152 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5153 } 5154 return true; 5155 } 5156 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5157 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5158 if (periodic_advertising_stop){ 5159 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5160 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5161 return true; 5162 } 5163 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5164 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5165 #endif 5166 5167 // Phase 3: modify 5168 5169 if (random_address_change){ 5170 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5171 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5172 if (hci_extended_advertising_supported()) { 5173 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5174 } 5175 #endif 5176 { 5177 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5178 } 5179 return true; 5180 } 5181 5182 #ifdef ENABLE_LE_CENTRAL 5183 if (hci_stack->le_scanning_param_update){ 5184 hci_stack->le_scanning_param_update = false; 5185 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5186 if (hci_extended_advertising_supported()){ 5187 // prepare arrays for all PHYs 5188 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5189 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5190 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5191 uint8_t scanning_phys = 1; // LE 1M PHY 5192 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5193 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5194 } else 5195 #endif 5196 { 5197 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5198 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5199 } 5200 return true; 5201 } 5202 #endif 5203 5204 #ifdef ENABLE_LE_PERIPHERAL 5205 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5206 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5207 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5208 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5209 if (hci_extended_advertising_supported()){ 5210 // map advertisment type to advertising event properties 5211 uint16_t adv_event_properties = 0; 5212 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5213 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5214 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5215 } 5216 hci_stack->le_advertising_set_in_current_command = 0; 5217 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5218 0, 5219 adv_event_properties, 5220 hci_stack->le_advertisements_interval_min, 5221 hci_stack->le_advertisements_interval_max, 5222 hci_stack->le_advertisements_channel_map, 5223 hci_stack->le_advertisements_own_addr_type, 5224 hci_stack->le_advertisements_direct_address_type, 5225 hci_stack->le_advertisements_direct_address, 5226 hci_stack->le_advertisements_filter_policy, 5227 0x7f, // tx power: no preference 5228 0x01, // primary adv phy: LE 1M 5229 0, // secondary adv max skip 5230 0, // secondary adv phy 5231 0, // adv sid 5232 0 // scan request notification 5233 ); 5234 } 5235 #endif 5236 { 5237 hci_send_cmd(&hci_le_set_advertising_parameters, 5238 hci_stack->le_advertisements_interval_min, 5239 hci_stack->le_advertisements_interval_max, 5240 hci_stack->le_advertisements_type, 5241 hci_stack->le_advertisements_own_addr_type, 5242 hci_stack->le_advertisements_direct_address_type, 5243 hci_stack->le_advertisements_direct_address, 5244 hci_stack->le_advertisements_channel_map, 5245 hci_stack->le_advertisements_filter_policy); 5246 } 5247 return true; 5248 } 5249 5250 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5251 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5252 uint8_t adv_data_clean[31]; 5253 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5254 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5255 hci_stack->le_advertisements_data_len); 5256 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5257 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5258 if (hci_extended_advertising_supported()){ 5259 hci_stack->le_advertising_set_in_current_command = 0; 5260 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5261 } else 5262 #endif 5263 { 5264 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5265 } 5266 return true; 5267 } 5268 5269 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5270 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5271 uint8_t scan_data_clean[31]; 5272 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5273 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5274 hci_stack->le_scan_response_data_len); 5275 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5276 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5277 if (hci_extended_advertising_supported()){ 5278 hci_stack->le_advertising_set_in_current_command = 0; 5279 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5280 } else 5281 #endif 5282 { 5283 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5284 } 5285 return true; 5286 } 5287 5288 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5289 if (hci_extended_advertising_supported()) { 5290 btstack_linked_list_iterator_t it; 5291 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5292 while (btstack_linked_list_iterator_has_next(&it)){ 5293 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5294 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5295 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5296 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5297 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5298 return true; 5299 } 5300 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5301 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5302 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5303 return true; 5304 } 5305 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5306 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5307 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5308 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5309 advertising_set->advertising_handle, 5310 advertising_set->extended_params.advertising_event_properties, 5311 advertising_set->extended_params.primary_advertising_interval_min, 5312 advertising_set->extended_params.primary_advertising_interval_max, 5313 advertising_set->extended_params.primary_advertising_channel_map, 5314 advertising_set->extended_params.own_address_type, 5315 advertising_set->extended_params.peer_address_type, 5316 advertising_set->extended_params.peer_address, 5317 advertising_set->extended_params.advertising_filter_policy, 5318 advertising_set->extended_params.advertising_tx_power, 5319 advertising_set->extended_params.primary_advertising_phy, 5320 advertising_set->extended_params.secondary_advertising_max_skip, 5321 advertising_set->extended_params.secondary_advertising_phy, 5322 advertising_set->extended_params.advertising_sid, 5323 advertising_set->extended_params.scan_request_notification_enable 5324 ); 5325 return true; 5326 } 5327 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5328 uint16_t pos = advertising_set->adv_data_pos; 5329 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5330 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5331 if ((operation & 0x02) != 0){ 5332 // last fragment or complete data 5333 operation |= 2; 5334 advertising_set->adv_data_pos = 0; 5335 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5336 } else { 5337 advertising_set->adv_data_pos += data_to_upload; 5338 } 5339 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5340 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5341 return true; 5342 } 5343 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5344 uint16_t pos = advertising_set->scan_data_pos; 5345 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5346 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5347 if ((operation & 0x02) != 0){ 5348 advertising_set->scan_data_pos = 0; 5349 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5350 } else { 5351 advertising_set->scan_data_pos += data_to_upload; 5352 } 5353 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5354 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5355 return true; 5356 } 5357 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5358 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5359 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5360 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5361 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5362 advertising_set->advertising_handle, 5363 advertising_set->periodic_params.periodic_advertising_interval_min, 5364 advertising_set->periodic_params.periodic_advertising_interval_max, 5365 advertising_set->periodic_params.periodic_advertising_properties); 5366 return true; 5367 } 5368 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5369 uint16_t pos = advertising_set->periodic_data_pos; 5370 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5371 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5372 if ((operation & 0x02) != 0){ 5373 // last fragment or complete data 5374 operation |= 2; 5375 advertising_set->periodic_data_pos = 0; 5376 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5377 } else { 5378 advertising_set->periodic_data_pos += data_to_upload; 5379 } 5380 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5381 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5382 return true; 5383 } 5384 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5385 } 5386 } 5387 #endif 5388 5389 #endif 5390 5391 #ifdef ENABLE_LE_CENTRAL 5392 // if connect with whitelist was active and is not cancelled yet, wait until next time 5393 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5394 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5395 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5396 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5397 #endif 5398 #endif 5399 5400 // LE Whitelist Management 5401 if (whitelist_modification_pending){ 5402 // add/remove entries 5403 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5404 while (btstack_linked_list_iterator_has_next(&lit)){ 5405 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5406 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5407 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5408 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5409 return true; 5410 } 5411 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5412 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5413 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5414 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5415 return true; 5416 } 5417 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5418 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5419 btstack_memory_whitelist_entry_free(entry); 5420 } 5421 } 5422 } 5423 5424 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5425 // LE Resolving List Management 5426 if (resolving_list_supported) { 5427 uint16_t i; 5428 switch (hci_stack->le_resolving_list_state) { 5429 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5430 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5431 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5432 return true; 5433 case LE_RESOLVING_LIST_READ_SIZE: 5434 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5435 hci_send_cmd(&hci_le_read_resolving_list_size); 5436 return true; 5437 case LE_RESOLVING_LIST_SEND_CLEAR: 5438 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5439 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5440 sizeof(hci_stack->le_resolving_list_add_entries)); 5441 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5442 sizeof(hci_stack->le_resolving_list_remove_entries)); 5443 hci_send_cmd(&hci_le_clear_resolving_list); 5444 return true; 5445 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5446 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5447 uint8_t offset = i >> 3; 5448 uint8_t mask = 1 << (i & 7); 5449 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5450 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5451 bd_addr_t peer_identity_addreses; 5452 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5453 sm_key_t peer_irk; 5454 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5455 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5456 5457 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5458 // trigger whitelist entry 'update' (work around for controller bug) 5459 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5460 while (btstack_linked_list_iterator_has_next(&lit)) { 5461 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5462 if (entry->address_type != peer_identity_addr_type) continue; 5463 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5464 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5465 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5466 } 5467 #endif 5468 5469 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5470 peer_identity_addreses); 5471 return true; 5472 } 5473 5474 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5475 5476 /* fall through */ 5477 5478 case LE_RESOLVING_LIST_ADD_ENTRIES: 5479 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5480 uint8_t offset = i >> 3; 5481 uint8_t mask = 1 << (i & 7); 5482 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5483 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5484 bd_addr_t peer_identity_addreses; 5485 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5486 sm_key_t peer_irk; 5487 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5488 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5489 const uint8_t *local_irk = gap_get_persistent_irk(); 5490 // command uses format specifier 'P' that stores 16-byte value without flip 5491 uint8_t local_irk_flipped[16]; 5492 uint8_t peer_irk_flipped[16]; 5493 reverse_128(local_irk, local_irk_flipped); 5494 reverse_128(peer_irk, peer_irk_flipped); 5495 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5496 peer_irk_flipped, local_irk_flipped); 5497 return true; 5498 } 5499 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5500 break; 5501 5502 default: 5503 break; 5504 } 5505 } 5506 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5507 #endif 5508 5509 #ifdef ENABLE_LE_CENTRAL 5510 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5511 // LE Whitelist Management 5512 if (periodic_list_modification_pending){ 5513 // add/remove entries 5514 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5515 while (btstack_linked_list_iterator_has_next(&lit)){ 5516 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5517 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5518 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5519 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5520 return true; 5521 } 5522 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5523 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5524 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5525 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address); 5526 return true; 5527 } 5528 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5529 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5530 btstack_memory_periodic_advertiser_list_entry_free(entry); 5531 } 5532 } 5533 } 5534 #endif 5535 #endif 5536 5537 // post-pone all actions until stack is fully working 5538 if (hci_stack->state != HCI_STATE_WORKING) return false; 5539 5540 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5541 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5542 5543 // Phase 4: restore state 5544 5545 #ifdef ENABLE_LE_CENTRAL 5546 // re-start scanning 5547 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5548 hci_stack->le_scanning_active = true; 5549 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5550 if (hci_extended_advertising_supported()){ 5551 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5552 } else 5553 #endif 5554 { 5555 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5556 } 5557 return true; 5558 } 5559 #endif 5560 5561 #ifdef ENABLE_LE_CENTRAL 5562 // re-start connecting 5563 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5564 bd_addr_t null_addr; 5565 memset(null_addr, 0, 6); 5566 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5567 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5568 hci_send_cmd(&hci_le_create_connection, 5569 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5570 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5571 1, // use whitelist 5572 0, // peer address type 5573 null_addr, // peer bd addr 5574 hci_stack->le_connection_own_addr_type, // our addr type: 5575 hci_stack->le_connection_interval_min, // conn interval min 5576 hci_stack->le_connection_interval_max, // conn interval max 5577 hci_stack->le_connection_latency, // conn latency 5578 hci_stack->le_supervision_timeout, // conn latency 5579 hci_stack->le_minimum_ce_length, // min ce length 5580 hci_stack->le_maximum_ce_length // max ce length 5581 ); 5582 return true; 5583 } 5584 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5585 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5586 switch(hci_stack->le_periodic_sync_request){ 5587 case LE_CONNECTING_DIRECT: 5588 case LE_CONNECTING_WHITELIST: 5589 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5590 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5591 hci_stack->le_periodic_sync_options, 5592 hci_stack->le_periodic_sync_advertising_sid, 5593 hci_stack->le_periodic_sync_advertiser_address_type, 5594 hci_stack->le_periodic_sync_advertiser_address, 5595 hci_stack->le_periodic_sync_skip, 5596 hci_stack->le_periodic_sync_timeout, 5597 hci_stack->le_periodic_sync_cte_type); 5598 return true; 5599 default: 5600 break; 5601 } 5602 } 5603 #endif 5604 #endif 5605 5606 #ifdef ENABLE_LE_PERIPHERAL 5607 // re-start advertising 5608 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5609 // check if advertisements should be enabled given 5610 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5611 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 5612 5613 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5614 if (hci_extended_advertising_supported()){ 5615 const uint8_t advertising_handles[] = { 0 }; 5616 const uint16_t durations[] = { 0 }; 5617 const uint16_t max_events[] = { 0 }; 5618 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5619 } else 5620 #endif 5621 { 5622 hci_send_cmd(&hci_le_set_advertise_enable, 1); 5623 } 5624 return true; 5625 } 5626 5627 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5628 if (hci_extended_advertising_supported()) { 5629 btstack_linked_list_iterator_t it; 5630 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5631 while (btstack_linked_list_iterator_has_next(&it)) { 5632 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 5633 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5634 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5635 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 5636 const uint16_t durations[] = { advertising_set->enable_timeout }; 5637 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 5638 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5639 return true; 5640 } 5641 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5642 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 5643 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5644 uint8_t enable = 1; 5645 if (advertising_set->periodic_include_adi){ 5646 enable |= 2; 5647 } 5648 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 5649 return true; 5650 } 5651 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5652 } 5653 } 5654 #endif 5655 #endif 5656 5657 return false; 5658 } 5659 #endif 5660 5661 static bool hci_run_general_pending_commands(void){ 5662 btstack_linked_item_t * it; 5663 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 5664 hci_connection_t * connection = (hci_connection_t *) it; 5665 5666 switch(connection->state){ 5667 case SEND_CREATE_CONNECTION: 5668 switch(connection->address_type){ 5669 #ifdef ENABLE_CLASSIC 5670 case BD_ADDR_TYPE_ACL: 5671 log_info("sending hci_create_connection"); 5672 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 5673 break; 5674 #endif 5675 default: 5676 #ifdef ENABLE_BLE 5677 #ifdef ENABLE_LE_CENTRAL 5678 log_info("sending hci_le_create_connection"); 5679 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5680 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5681 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5682 if (hci_extended_advertising_supported()) { 5683 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 5684 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 5685 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 5686 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 5687 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 5688 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 5689 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 5690 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 5691 hci_send_cmd(&hci_le_extended_create_connection, 5692 0, // don't use whitelist 5693 hci_stack->le_connection_own_addr_type, // our addr type: 5694 connection->address_type, // peer address type 5695 connection->address, // peer bd addr 5696 1, // initiating PHY - 1M 5697 le_connection_scan_interval, // conn scan interval 5698 le_connection_scan_window, // conn scan windows 5699 le_connection_interval_min, // conn interval min 5700 le_connection_interval_max, // conn interval max 5701 le_connection_latency, // conn latency 5702 le_supervision_timeout, // conn latency 5703 le_minimum_ce_length, // min ce length 5704 le_maximum_ce_length // max ce length 5705 ); } 5706 else 5707 #endif 5708 { 5709 hci_send_cmd(&hci_le_create_connection, 5710 hci_stack->le_connection_scan_interval, // conn scan interval 5711 hci_stack->le_connection_scan_window, // conn scan windows 5712 0, // don't use whitelist 5713 connection->address_type, // peer address type 5714 connection->address, // peer bd addr 5715 hci_stack->le_connection_own_addr_type, // our addr type: 5716 hci_stack->le_connection_interval_min, // conn interval min 5717 hci_stack->le_connection_interval_max, // conn interval max 5718 hci_stack->le_connection_latency, // conn latency 5719 hci_stack->le_supervision_timeout, // conn latency 5720 hci_stack->le_minimum_ce_length, // min ce length 5721 hci_stack->le_maximum_ce_length // max ce length 5722 ); 5723 } 5724 connection->state = SENT_CREATE_CONNECTION; 5725 #endif 5726 #endif 5727 break; 5728 } 5729 return true; 5730 5731 #ifdef ENABLE_CLASSIC 5732 case RECEIVED_CONNECTION_REQUEST: 5733 connection->role = HCI_ROLE_SLAVE; 5734 if (connection->address_type == BD_ADDR_TYPE_ACL){ 5735 log_info("sending hci_accept_connection_request"); 5736 connection->state = ACCEPTED_CONNECTION_REQUEST; 5737 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 5738 return true; 5739 } 5740 break; 5741 #endif 5742 5743 #ifdef ENABLE_BLE 5744 #ifdef ENABLE_LE_CENTRAL 5745 case SEND_CANCEL_CONNECTION: 5746 connection->state = SENT_CANCEL_CONNECTION; 5747 hci_send_cmd(&hci_le_create_connection_cancel); 5748 return true; 5749 #endif 5750 #endif 5751 case SEND_DISCONNECT: 5752 connection->state = SENT_DISCONNECT; 5753 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5754 return true; 5755 5756 default: 5757 break; 5758 } 5759 5760 // no further commands if connection is about to get shut down 5761 if (connection->state == SENT_DISCONNECT) continue; 5762 5763 #ifdef ENABLE_CLASSIC 5764 5765 // Handling link key request requires remote supported features 5766 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 5767 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 5768 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 5769 5770 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 5771 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 5772 if (have_link_key && security_level_sufficient){ 5773 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 5774 } else { 5775 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 5776 } 5777 return true; 5778 } 5779 5780 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 5781 log_info("denying to pin request"); 5782 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 5783 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 5784 return true; 5785 } 5786 5787 // security assessment requires remote features 5788 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 5789 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 5790 hci_ssp_assess_security_on_io_cap_request(connection); 5791 // 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 5792 } 5793 5794 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 5795 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 5796 // set authentication requirements: 5797 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 5798 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 5799 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 5800 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 5801 authreq |= 1; 5802 } 5803 bool bonding = hci_stack->bondable; 5804 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 5805 // if we have received IO Cap Response, we're in responder role 5806 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5807 if (bonding && !remote_bonding){ 5808 log_info("Remote not bonding, dropping local flag"); 5809 bonding = false; 5810 } 5811 } 5812 if (bonding){ 5813 if (connection->bonding_flags & BONDING_DEDICATED){ 5814 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5815 } else { 5816 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5817 } 5818 } 5819 uint8_t have_oob_data = 0; 5820 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5821 if (connection->classic_oob_c_192 != NULL){ 5822 have_oob_data |= 1; 5823 } 5824 if (connection->classic_oob_c_256 != NULL){ 5825 have_oob_data |= 2; 5826 } 5827 #endif 5828 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 5829 return true; 5830 } 5831 5832 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 5833 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 5834 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 5835 return true; 5836 } 5837 5838 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5839 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 5840 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 5841 const uint8_t zero[16] = { 0 }; 5842 const uint8_t * r_192 = zero; 5843 const uint8_t * c_192 = zero; 5844 const uint8_t * r_256 = zero; 5845 const uint8_t * c_256 = zero; 5846 // verify P-256 OOB 5847 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 5848 c_256 = connection->classic_oob_c_256; 5849 if (connection->classic_oob_r_256 != NULL) { 5850 r_256 = connection->classic_oob_r_256; 5851 } 5852 } 5853 // verify P-192 OOB 5854 if ((connection->classic_oob_c_192 != NULL)) { 5855 c_192 = connection->classic_oob_c_192; 5856 if (connection->classic_oob_r_192 != NULL) { 5857 r_192 = connection->classic_oob_r_192; 5858 } 5859 } 5860 5861 // assess security 5862 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 5863 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 5864 if (need_level_4 && !can_reach_level_4){ 5865 log_info("Level 4 required, but not possible -> abort"); 5866 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 5867 // send oob negative reply 5868 c_256 = NULL; 5869 c_192 = NULL; 5870 } 5871 5872 // Reply 5873 if (c_256 != zero) { 5874 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 5875 } else if (c_192 != zero){ 5876 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 5877 } else { 5878 hci_stack->classic_oob_con_handle = connection->con_handle; 5879 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 5880 } 5881 return true; 5882 } 5883 #endif 5884 5885 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 5886 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 5887 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 5888 return true; 5889 } 5890 5891 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 5892 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 5893 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 5894 return true; 5895 } 5896 5897 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 5898 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 5899 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 5900 return true; 5901 } 5902 5903 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 5904 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 5905 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 5906 connection->state = SENT_DISCONNECT; 5907 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5908 return true; 5909 } 5910 5911 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 5912 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 5913 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 5914 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 5915 return true; 5916 } 5917 5918 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 5919 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 5920 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 5921 return true; 5922 } 5923 5924 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 5925 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 5926 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 5927 return true; 5928 } 5929 5930 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 5931 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 5932 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 5933 return true; 5934 } 5935 5936 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 5937 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 5938 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 5939 return true; 5940 } 5941 5942 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 5943 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 5944 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 5945 return true; 5946 } 5947 #endif 5948 5949 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 5950 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 5951 #ifdef ENABLE_CLASSIC 5952 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 5953 #endif 5954 if (connection->state != SENT_DISCONNECT){ 5955 connection->state = SENT_DISCONNECT; 5956 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 5957 return true; 5958 } 5959 } 5960 5961 #ifdef ENABLE_CLASSIC 5962 uint16_t sniff_min_interval; 5963 switch (connection->sniff_min_interval){ 5964 case 0: 5965 break; 5966 case 0xffff: 5967 connection->sniff_min_interval = 0; 5968 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 5969 return true; 5970 default: 5971 sniff_min_interval = connection->sniff_min_interval; 5972 connection->sniff_min_interval = 0; 5973 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 5974 return true; 5975 } 5976 5977 if (connection->sniff_subrating_max_latency != 0xffff){ 5978 uint16_t max_latency = connection->sniff_subrating_max_latency; 5979 connection->sniff_subrating_max_latency = 0; 5980 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 5981 return true; 5982 } 5983 5984 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 5985 uint8_t service_type = (uint8_t) connection->qos_service_type; 5986 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 5987 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); 5988 return true; 5989 } 5990 5991 if (connection->request_role != HCI_ROLE_INVALID){ 5992 hci_role_t role = connection->request_role; 5993 connection->request_role = HCI_ROLE_INVALID; 5994 hci_send_cmd(&hci_switch_role_command, connection->address, role); 5995 return true; 5996 } 5997 #endif 5998 5999 if (connection->gap_connection_tasks != 0){ 6000 #ifdef ENABLE_CLASSIC 6001 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6002 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6003 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6004 return true; 6005 } 6006 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6007 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6008 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6009 return true; 6010 } 6011 #endif 6012 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6013 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6014 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6015 return true; 6016 } 6017 } 6018 6019 #ifdef ENABLE_BLE 6020 switch (connection->le_con_parameter_update_state){ 6021 // response to L2CAP CON PARAMETER UPDATE REQUEST 6022 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6023 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6024 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6025 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6026 0x0000, 0xffff); 6027 return true; 6028 case CON_PARAMETER_UPDATE_REPLY: 6029 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6030 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6031 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6032 0x0000, 0xffff); 6033 return true; 6034 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6035 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6036 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, ERROR_CODE_UNSUPPORTED_LMP_PARAMETER_VALUE_UNSUPPORTED_LL_PARAMETER_VALUE); 6037 return true; 6038 default: 6039 break; 6040 } 6041 if (connection->le_phy_update_all_phys != 0xffu){ 6042 uint8_t all_phys = connection->le_phy_update_all_phys; 6043 connection->le_phy_update_all_phys = 0xff; 6044 hci_send_cmd(&hci_le_set_phy, connection->con_handle, all_phys, connection->le_phy_update_tx_phys, connection->le_phy_update_rx_phys, connection->le_phy_update_phy_options); 6045 return true; 6046 } 6047 #endif 6048 } 6049 return false; 6050 } 6051 6052 static void hci_run(void){ 6053 6054 // stack state sub statemachines 6055 // halting needs to be called even if we cannot send command packet now 6056 switch (hci_stack->state) { 6057 case HCI_STATE_INITIALIZING: 6058 hci_initializing_run(); 6059 return; 6060 case HCI_STATE_HALTING: 6061 hci_halting_run(); 6062 return; 6063 case HCI_STATE_FALLING_ASLEEP: 6064 hci_falling_asleep_run(); 6065 return; 6066 default: 6067 break; 6068 } 6069 6070 bool done; 6071 6072 // send continuation fragments first, as they block the prepared packet buffer 6073 done = hci_run_acl_fragments(); 6074 if (done) return; 6075 6076 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6077 // send host num completed packets next as they don't require num_cmd_packets > 0 6078 if (!hci_can_send_comand_packet_transport()) return; 6079 if (hci_stack->host_completed_packets){ 6080 hci_host_num_completed_packets(); 6081 return; 6082 } 6083 #endif 6084 6085 if (!hci_can_send_command_packet_now()) return; 6086 6087 // global/non-connection oriented commands 6088 6089 6090 #ifdef ENABLE_CLASSIC 6091 // general gap classic 6092 done = hci_run_general_gap_classic(); 6093 if (done) return; 6094 #endif 6095 6096 #ifdef ENABLE_BLE 6097 // general gap le 6098 done = hci_run_general_gap_le(); 6099 if (done) return; 6100 #endif 6101 6102 // send pending HCI commands 6103 hci_run_general_pending_commands(); 6104 } 6105 6106 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6107 // house-keeping 6108 6109 #ifdef ENABLE_CLASSIC 6110 bd_addr_t addr; 6111 hci_connection_t * conn; 6112 #endif 6113 #ifdef ENABLE_LE_CENTRAL 6114 uint8_t initiator_filter_policy; 6115 #endif 6116 6117 uint16_t opcode = little_endian_read_16(packet, 0); 6118 switch (opcode) { 6119 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6120 hci_stack->loopback_mode = packet[3]; 6121 break; 6122 6123 #ifdef ENABLE_CLASSIC 6124 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6125 reverse_bd_addr(&packet[3], addr); 6126 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6127 6128 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6129 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6130 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6131 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6132 } 6133 6134 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6135 if (!conn) { 6136 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6137 if (!conn) { 6138 // notify client that alloc failed 6139 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6140 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6141 } 6142 conn->state = SEND_CREATE_CONNECTION; 6143 conn->role = HCI_ROLE_MASTER; 6144 } 6145 6146 log_info("conn state %u", conn->state); 6147 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6148 switch (conn->state) { 6149 // if connection active exists 6150 case OPEN: 6151 // and OPEN, emit connection complete command 6152 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6153 // packet not sent to controller 6154 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6155 case RECEIVED_DISCONNECTION_COMPLETE: 6156 // create connection triggered in disconnect complete event, let's do it now 6157 break; 6158 case SEND_CREATE_CONNECTION: 6159 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6160 if (hci_classic_operation_active()){ 6161 return ERROR_CODE_SUCCESS; 6162 } 6163 #endif 6164 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6165 break; 6166 default: 6167 // otherwise, just ignore as it is already in the open process 6168 // packet not sent to controller 6169 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6170 } 6171 conn->state = SENT_CREATE_CONNECTION; 6172 6173 // track outgoing connection 6174 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6175 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6176 break; 6177 6178 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6179 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6180 // setup_synchronous_connection? Voice setting at offset 22 6181 // TODO: compare to current setting if sco connection already active 6182 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6183 break; 6184 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6185 // accept_synchronous_connection? Voice setting at offset 18 6186 // TODO: compare to current setting if sco connection already active 6187 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6188 // track outgoing connection 6189 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6190 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6191 break; 6192 #endif 6193 #endif 6194 6195 #ifdef ENABLE_BLE 6196 #ifdef ENABLE_LE_CENTRAL 6197 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6198 // white list used? 6199 initiator_filter_policy = packet[7]; 6200 switch (initiator_filter_policy) { 6201 case 0: 6202 // whitelist not used 6203 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6204 break; 6205 case 1: 6206 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6207 break; 6208 default: 6209 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6210 break; 6211 } 6212 // track outgoing connection 6213 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6214 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6215 break; 6216 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6217 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6218 break; 6219 #endif 6220 #endif 6221 default: 6222 break; 6223 } 6224 6225 hci_stack->num_cmd_packets--; 6226 6227 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6228 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6229 if (err != 0){ 6230 return ERROR_CODE_HARDWARE_FAILURE; 6231 } 6232 return ERROR_CODE_SUCCESS; 6233 } 6234 6235 // disconnect because of security block 6236 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6237 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6238 if (!connection) return; 6239 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6240 } 6241 6242 6243 // Configure Secure Simple Pairing 6244 6245 #ifdef ENABLE_CLASSIC 6246 6247 // enable will enable SSP during init 6248 void gap_ssp_set_enable(int enable){ 6249 hci_stack->ssp_enable = enable; 6250 } 6251 6252 static int hci_local_ssp_activated(void){ 6253 return gap_ssp_supported() && hci_stack->ssp_enable; 6254 } 6255 6256 // if set, BTstack will respond to io capability request using authentication requirement 6257 void gap_ssp_set_io_capability(int io_capability){ 6258 hci_stack->ssp_io_capability = io_capability; 6259 } 6260 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6261 hci_stack->ssp_authentication_requirement = authentication_requirement; 6262 } 6263 6264 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6265 void gap_ssp_set_auto_accept(int auto_accept){ 6266 hci_stack->ssp_auto_accept = auto_accept; 6267 } 6268 6269 void gap_secure_connections_enable(bool enable){ 6270 hci_stack->secure_connections_enable = enable; 6271 } 6272 bool gap_secure_connections_active(void){ 6273 return hci_stack->secure_connections_active; 6274 } 6275 6276 #endif 6277 6278 // va_list part of hci_send_cmd 6279 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6280 if (!hci_can_send_command_packet_now()){ 6281 log_error("hci_send_cmd called but cannot send packet now"); 6282 return ERROR_CODE_COMMAND_DISALLOWED; 6283 } 6284 6285 // for HCI INITIALIZATION 6286 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6287 hci_stack->last_cmd_opcode = cmd->opcode; 6288 6289 hci_reserve_packet_buffer(); 6290 uint8_t * packet = hci_stack->hci_packet_buffer; 6291 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6292 uint8_t status = hci_send_cmd_packet(packet, size); 6293 6294 // release packet buffer on error or for synchronous transport implementations 6295 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6296 hci_release_packet_buffer(); 6297 hci_emit_transport_packet_sent(); 6298 } 6299 6300 return status; 6301 } 6302 6303 /** 6304 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6305 */ 6306 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6307 va_list argptr; 6308 va_start(argptr, cmd); 6309 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6310 va_end(argptr); 6311 return status; 6312 } 6313 6314 // Create various non-HCI events. 6315 // TODO: generalize, use table similar to hci_create_command 6316 6317 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6318 // dump packet 6319 if (dump) { 6320 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6321 } 6322 6323 // dispatch to all event handlers 6324 btstack_linked_list_iterator_t it; 6325 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6326 while (btstack_linked_list_iterator_has_next(&it)){ 6327 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6328 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6329 } 6330 } 6331 6332 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6333 if (!hci_stack->acl_packet_handler) return; 6334 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6335 } 6336 6337 #ifdef ENABLE_CLASSIC 6338 static void hci_notify_if_sco_can_send_now(void){ 6339 // notify SCO sender if waiting 6340 if (!hci_stack->sco_waiting_for_can_send_now) return; 6341 if (hci_can_send_sco_packet_now()){ 6342 hci_stack->sco_waiting_for_can_send_now = 0; 6343 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6344 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6345 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6346 } 6347 } 6348 6349 // parsing end emitting has been merged to reduce code size 6350 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6351 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6352 6353 uint8_t * eir_data; 6354 ad_context_t context; 6355 const uint8_t * name; 6356 uint8_t name_len; 6357 6358 if (size < 3) return; 6359 6360 int event_type = hci_event_packet_get_type(packet); 6361 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6362 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6363 6364 switch (event_type){ 6365 case HCI_EVENT_INQUIRY_RESULT: 6366 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6367 if (size != (3 + (num_responses * 14))) return; 6368 break; 6369 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6370 if (size != 257) return; 6371 if (num_responses != 1) return; 6372 break; 6373 default: 6374 return; 6375 } 6376 6377 // event[1] is set at the end 6378 int i; 6379 for (i=0; i<num_responses;i++){ 6380 memset(event, 0, sizeof(event)); 6381 event[0] = GAP_EVENT_INQUIRY_RESULT; 6382 uint8_t event_size = 27; // if name is not set by EIR 6383 6384 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6385 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6386 (void)memcpy(&event[9], 6387 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6388 3); // class of device 6389 (void)memcpy(&event[12], 6390 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6391 2); // clock offset 6392 6393 switch (event_type){ 6394 case HCI_EVENT_INQUIRY_RESULT: 6395 // 14,15,16,17 = 0, size 18 6396 break; 6397 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6398 event[14] = 1; 6399 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6400 // 16,17 = 0, size 18 6401 break; 6402 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6403 event[14] = 1; 6404 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6405 // EIR packets only contain a single inquiry response 6406 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6407 name = NULL; 6408 // Iterate over EIR data 6409 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6410 uint8_t data_type = ad_iterator_get_data_type(&context); 6411 uint8_t data_size = ad_iterator_get_data_len(&context); 6412 const uint8_t * data = ad_iterator_get_data(&context); 6413 // Prefer Complete Local Name over Shortened Local Name 6414 switch (data_type){ 6415 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6416 if (name) continue; 6417 /* fall through */ 6418 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6419 name = data; 6420 name_len = data_size; 6421 break; 6422 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6423 if (data_size != 8) break; 6424 event[16] = 1; 6425 memcpy(&event[17], data, 8); 6426 break; 6427 default: 6428 break; 6429 } 6430 } 6431 if (name){ 6432 event[25] = 1; 6433 // truncate name if needed 6434 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6435 event[26] = len; 6436 (void)memcpy(&event[27], name, len); 6437 event_size += len; 6438 } 6439 break; 6440 default: 6441 return; 6442 } 6443 event[1] = event_size - 2; 6444 hci_emit_event(event, event_size, 1); 6445 } 6446 } 6447 #endif 6448 6449 void hci_emit_state(void){ 6450 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6451 uint8_t event[3]; 6452 event[0] = BTSTACK_EVENT_STATE; 6453 event[1] = sizeof(event) - 2u; 6454 event[2] = hci_stack->state; 6455 hci_emit_event(event, sizeof(event), 1); 6456 } 6457 6458 #ifdef ENABLE_CLASSIC 6459 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6460 uint8_t event[13]; 6461 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6462 event[1] = sizeof(event) - 2; 6463 event[2] = status; 6464 little_endian_store_16(event, 3, con_handle); 6465 reverse_bd_addr(address, &event[5]); 6466 event[11] = 1; // ACL connection 6467 event[12] = 0; // encryption disabled 6468 hci_emit_event(event, sizeof(event), 1); 6469 } 6470 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 6471 if (disable_l2cap_timeouts) return; 6472 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 6473 uint8_t event[4]; 6474 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 6475 event[1] = sizeof(event) - 2; 6476 little_endian_store_16(event, 2, conn->con_handle); 6477 hci_emit_event(event, sizeof(event), 1); 6478 } 6479 #endif 6480 6481 #ifdef ENABLE_BLE 6482 #ifdef ENABLE_LE_CENTRAL 6483 static void hci_emit_le_connection_complete(uint8_t address_type, const bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6484 uint8_t event[21]; 6485 event[0] = HCI_EVENT_LE_META; 6486 event[1] = sizeof(event) - 2u; 6487 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 6488 event[3] = status; 6489 little_endian_store_16(event, 4, con_handle); 6490 event[6] = 0; // TODO: role 6491 event[7] = address_type; 6492 reverse_bd_addr(address, &event[8]); 6493 little_endian_store_16(event, 14, 0); // interval 6494 little_endian_store_16(event, 16, 0); // latency 6495 little_endian_store_16(event, 18, 0); // supervision timeout 6496 event[20] = 0; // master clock accuracy 6497 hci_emit_event(event, sizeof(event), 1); 6498 } 6499 #endif 6500 #endif 6501 6502 static void hci_emit_transport_packet_sent(void){ 6503 // notify upper stack that it might be possible to send again 6504 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 6505 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 6506 } 6507 6508 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 6509 uint8_t event[6]; 6510 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 6511 event[1] = sizeof(event) - 2u; 6512 event[2] = 0; // status = OK 6513 little_endian_store_16(event, 3, con_handle); 6514 event[5] = reason; 6515 hci_emit_event(event, sizeof(event), 1); 6516 } 6517 6518 static void hci_emit_nr_connections_changed(void){ 6519 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 6520 uint8_t event[3]; 6521 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 6522 event[1] = sizeof(event) - 2u; 6523 event[2] = nr_hci_connections(); 6524 hci_emit_event(event, sizeof(event), 1); 6525 } 6526 6527 static void hci_emit_hci_open_failed(void){ 6528 log_info("BTSTACK_EVENT_POWERON_FAILED"); 6529 uint8_t event[2]; 6530 event[0] = BTSTACK_EVENT_POWERON_FAILED; 6531 event[1] = sizeof(event) - 2u; 6532 hci_emit_event(event, sizeof(event), 1); 6533 } 6534 6535 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 6536 log_info("hci_emit_dedicated_bonding_result %u ", status); 6537 uint8_t event[9]; 6538 int pos = 0; 6539 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 6540 event[pos++] = sizeof(event) - 2u; 6541 event[pos++] = status; 6542 reverse_bd_addr(address, &event[pos]); 6543 hci_emit_event(event, sizeof(event), 1); 6544 } 6545 6546 6547 #ifdef ENABLE_CLASSIC 6548 6549 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 6550 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 6551 uint8_t event[5]; 6552 int pos = 0; 6553 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 6554 event[pos++] = sizeof(event) - 2; 6555 little_endian_store_16(event, 2, con_handle); 6556 pos += 2; 6557 event[pos++] = level; 6558 hci_emit_event(event, sizeof(event), 1); 6559 } 6560 6561 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 6562 if (!connection) return LEVEL_0; 6563 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 6564 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 6565 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 6566 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 6567 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 6568 // LEVEL 4 always requires 128 bit encrytion key size 6569 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 6570 security_level = LEVEL_3; 6571 } 6572 return security_level; 6573 } 6574 6575 static void hci_emit_discoverable_enabled(uint8_t enabled){ 6576 log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled); 6577 uint8_t event[3]; 6578 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 6579 event[1] = sizeof(event) - 2; 6580 event[2] = enabled; 6581 hci_emit_event(event, sizeof(event), 1); 6582 } 6583 6584 // query if remote side supports eSCO 6585 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 6586 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6587 if (!connection) return false; 6588 return (connection->remote_supported_features[0] & 1) != 0; 6589 } 6590 6591 static bool hci_ssp_supported(hci_connection_t * connection){ 6592 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 6593 return (connection->bonding_flags & mask) == mask; 6594 } 6595 6596 // query if remote side supports SSP 6597 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 6598 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6599 if (!connection) return false; 6600 return hci_ssp_supported(connection) ? 1 : 0; 6601 } 6602 6603 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 6604 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 6605 } 6606 6607 /** 6608 * Check if remote supported features query has completed 6609 */ 6610 bool hci_remote_features_available(hci_con_handle_t handle){ 6611 hci_connection_t * connection = hci_connection_for_handle(handle); 6612 if (!connection) return false; 6613 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 6614 } 6615 6616 /** 6617 * Trigger remote supported features query 6618 */ 6619 6620 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 6621 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 6622 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6623 } 6624 } 6625 6626 void hci_remote_features_query(hci_con_handle_t con_handle){ 6627 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6628 if (!connection) return; 6629 hci_trigger_remote_features_for_connection(connection); 6630 hci_run(); 6631 } 6632 6633 // GAP API 6634 /** 6635 * @bbrief enable/disable bonding. default is enabled 6636 * @praram enabled 6637 */ 6638 void gap_set_bondable_mode(int enable){ 6639 hci_stack->bondable = enable ? 1 : 0; 6640 } 6641 /** 6642 * @brief Get bondable mode. 6643 * @return 1 if bondable 6644 */ 6645 int gap_get_bondable_mode(void){ 6646 return hci_stack->bondable; 6647 } 6648 6649 /** 6650 * @brief map link keys to security levels 6651 */ 6652 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 6653 switch (link_key_type){ 6654 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6655 return LEVEL_4; 6656 case COMBINATION_KEY: 6657 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6658 return LEVEL_3; 6659 default: 6660 return LEVEL_2; 6661 } 6662 } 6663 6664 /** 6665 * @brief map link keys to secure connection yes/no 6666 */ 6667 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 6668 switch (link_key_type){ 6669 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6670 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6671 return true; 6672 default: 6673 return false; 6674 } 6675 } 6676 6677 /** 6678 * @brief map link keys to authenticated 6679 */ 6680 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 6681 switch (link_key_type){ 6682 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6683 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6684 return true; 6685 default: 6686 return false; 6687 } 6688 } 6689 6690 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 6691 log_info("gap_mitm_protection_required_for_security_level %u", level); 6692 return level > LEVEL_2; 6693 } 6694 6695 /** 6696 * @brief get current security level 6697 */ 6698 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 6699 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6700 if (!connection) return LEVEL_0; 6701 return gap_security_level_for_connection(connection); 6702 } 6703 6704 /** 6705 * @brief request connection to device to 6706 * @result GAP_AUTHENTICATION_RESULT 6707 */ 6708 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 6709 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6710 if (!connection){ 6711 hci_emit_security_level(con_handle, LEVEL_0); 6712 return; 6713 } 6714 6715 btstack_assert(hci_is_le_connection(connection) == false); 6716 6717 // Core Spec 5.2, GAP 5.2.2: "When in Secure Connections Only mode, all services (except those allowed to have Security Mode 4, Level 0) 6718 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 6719 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 6720 requested_level = LEVEL_4; 6721 } 6722 6723 gap_security_level_t current_level = gap_security_level(con_handle); 6724 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 6725 requested_level, connection->requested_security_level, current_level); 6726 6727 // authentication active if authentication request was sent or planned level > 0 6728 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 6729 if (authentication_active){ 6730 // authentication already active 6731 if (connection->requested_security_level < requested_level){ 6732 // increase requested level as new level is higher 6733 // TODO: handle re-authentication when done 6734 connection->requested_security_level = requested_level; 6735 } 6736 } else { 6737 // no request active, notify if security sufficient 6738 if (requested_level <= current_level){ 6739 hci_emit_security_level(con_handle, current_level); 6740 return; 6741 } 6742 6743 // store request 6744 connection->requested_security_level = requested_level; 6745 6746 // request remote features if not already active 6747 hci_remote_features_query(con_handle); 6748 6749 // start to authenticate connection 6750 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 6751 hci_run(); 6752 } 6753 } 6754 6755 /** 6756 * @brief start dedicated bonding with device. disconnect after bonding 6757 * @param device 6758 * @param request MITM protection 6759 * @result GAP_DEDICATED_BONDING_COMPLETE 6760 */ 6761 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 6762 6763 // create connection state machine 6764 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 6765 6766 if (!connection){ 6767 return BTSTACK_MEMORY_ALLOC_FAILED; 6768 } 6769 6770 // delete linkn key 6771 gap_drop_link_key_for_bd_addr(device); 6772 6773 // configure LEVEL_2/3, dedicated bonding 6774 connection->state = SEND_CREATE_CONNECTION; 6775 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 6776 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 6777 connection->bonding_flags = BONDING_DEDICATED; 6778 6779 // wait for GAP Security Result and send GAP Dedicated Bonding complete 6780 6781 // handle: connnection failure (connection complete != ok) 6782 // handle: authentication failure 6783 // handle: disconnect on done 6784 6785 hci_run(); 6786 6787 return 0; 6788 } 6789 6790 void gap_set_local_name(const char * local_name){ 6791 hci_stack->local_name = local_name; 6792 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 6793 // also update EIR if not set by user 6794 if (hci_stack->eir_data == NULL){ 6795 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 6796 } 6797 hci_run(); 6798 } 6799 #endif 6800 6801 6802 #ifdef ENABLE_BLE 6803 6804 #ifdef ENABLE_LE_CENTRAL 6805 void gap_start_scan(void){ 6806 hci_stack->le_scanning_enabled = true; 6807 hci_run(); 6808 } 6809 6810 void gap_stop_scan(void){ 6811 hci_stack->le_scanning_enabled = false; 6812 hci_run(); 6813 } 6814 6815 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 6816 hci_stack->le_scan_type = scan_type; 6817 hci_stack->le_scan_filter_policy = scanning_filter_policy; 6818 hci_stack->le_scan_interval = scan_interval; 6819 hci_stack->le_scan_window = scan_window; 6820 hci_stack->le_scanning_param_update = true; 6821 hci_run(); 6822 } 6823 6824 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 6825 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 6826 } 6827 6828 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 6829 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 6830 if (!conn){ 6831 // disallow if le connection is already outgoing 6832 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 6833 log_error("le connection already active"); 6834 return ERROR_CODE_COMMAND_DISALLOWED; 6835 } 6836 6837 log_info("gap_connect: no connection exists yet, creating context"); 6838 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 6839 if (!conn){ 6840 // notify client that alloc failed 6841 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6842 log_info("gap_connect: failed to alloc hci_connection_t"); 6843 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 6844 } 6845 6846 // set le connecting state 6847 if (hci_is_le_connection_type(addr_type)){ 6848 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 6849 } 6850 6851 conn->state = SEND_CREATE_CONNECTION; 6852 log_info("gap_connect: send create connection next"); 6853 hci_run(); 6854 return ERROR_CODE_SUCCESS; 6855 } 6856 6857 if (!hci_is_le_connection(conn) || 6858 (conn->state == SEND_CREATE_CONNECTION) || 6859 (conn->state == SENT_CREATE_CONNECTION)) { 6860 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 6861 log_error("gap_connect: classic connection or connect is already being created"); 6862 return GATT_CLIENT_IN_WRONG_STATE; 6863 } 6864 6865 // check if connection was just disconnected 6866 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 6867 log_info("gap_connect: send create connection (again)"); 6868 conn->state = SEND_CREATE_CONNECTION; 6869 hci_run(); 6870 return ERROR_CODE_SUCCESS; 6871 } 6872 6873 log_info("gap_connect: context exists with state %u", conn->state); 6874 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 6875 hci_run(); 6876 return ERROR_CODE_SUCCESS; 6877 } 6878 6879 // @assumption: only a single outgoing LE Connection exists 6880 static hci_connection_t * gap_get_outgoing_connection(void){ 6881 btstack_linked_item_t *it; 6882 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6883 hci_connection_t * conn = (hci_connection_t *) it; 6884 if (!hci_is_le_connection(conn)) continue; 6885 switch (conn->state){ 6886 case SEND_CREATE_CONNECTION: 6887 case SENT_CREATE_CONNECTION: 6888 case SENT_CANCEL_CONNECTION: 6889 return conn; 6890 default: 6891 break; 6892 }; 6893 } 6894 return NULL; 6895 } 6896 6897 uint8_t gap_connect_cancel(void){ 6898 hci_connection_t * conn = gap_get_outgoing_connection(); 6899 if (!conn) return 0; 6900 switch (conn->state){ 6901 case SEND_CREATE_CONNECTION: 6902 // skip sending create connection and emit event instead 6903 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 6904 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 6905 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 6906 btstack_memory_hci_connection_free( conn ); 6907 break; 6908 case SENT_CREATE_CONNECTION: 6909 // request to send cancel connection 6910 conn->state = SEND_CANCEL_CONNECTION; 6911 hci_run(); 6912 break; 6913 default: 6914 break; 6915 } 6916 return 0; 6917 } 6918 6919 /** 6920 * @brief Set connection parameters for outgoing connections 6921 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 6922 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 6923 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 6924 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 6925 * @param conn_latency, default: 4 6926 * @param supervision_timeout (unit: 10ms), default: 720 ms 6927 * @param min_ce_length (unit: 0.625ms), default: 10 ms 6928 * @param max_ce_length (unit: 0.625ms), default: 30 ms 6929 */ 6930 6931 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 6932 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 6933 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 6934 hci_stack->le_connection_scan_interval = conn_scan_interval; 6935 hci_stack->le_connection_scan_window = conn_scan_window; 6936 hci_stack->le_connection_interval_min = conn_interval_min; 6937 hci_stack->le_connection_interval_max = conn_interval_max; 6938 hci_stack->le_connection_latency = conn_latency; 6939 hci_stack->le_supervision_timeout = supervision_timeout; 6940 hci_stack->le_minimum_ce_length = min_ce_length; 6941 hci_stack->le_maximum_ce_length = max_ce_length; 6942 } 6943 #endif 6944 6945 /** 6946 * @brief Updates the connection parameters for a given LE connection 6947 * @param handle 6948 * @param conn_interval_min (unit: 1.25ms) 6949 * @param conn_interval_max (unit: 1.25ms) 6950 * @param conn_latency 6951 * @param supervision_timeout (unit: 10ms) 6952 * @return 0 if ok 6953 */ 6954 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 6955 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 6956 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6957 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6958 connection->le_conn_interval_min = conn_interval_min; 6959 connection->le_conn_interval_max = conn_interval_max; 6960 connection->le_conn_latency = conn_latency; 6961 connection->le_supervision_timeout = supervision_timeout; 6962 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 6963 hci_run(); 6964 return 0; 6965 } 6966 6967 /** 6968 * @brief Request an update of the connection parameter for a given LE connection 6969 * @param handle 6970 * @param conn_interval_min (unit: 1.25ms) 6971 * @param conn_interval_max (unit: 1.25ms) 6972 * @param conn_latency 6973 * @param supervision_timeout (unit: 10ms) 6974 * @return 0 if ok 6975 */ 6976 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 6977 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 6978 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6979 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6980 connection->le_conn_interval_min = conn_interval_min; 6981 connection->le_conn_interval_max = conn_interval_max; 6982 connection->le_conn_latency = conn_latency; 6983 connection->le_supervision_timeout = supervision_timeout; 6984 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 6985 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 6986 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 6987 return 0; 6988 } 6989 6990 #ifdef ENABLE_LE_PERIPHERAL 6991 6992 /** 6993 * @brief Set Advertisement Data 6994 * @param advertising_data_length 6995 * @param advertising_data (max 31 octets) 6996 * @note data is not copied, pointer has to stay valid 6997 */ 6998 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 6999 hci_stack->le_advertisements_data_len = advertising_data_length; 7000 hci_stack->le_advertisements_data = advertising_data; 7001 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7002 hci_run(); 7003 } 7004 7005 /** 7006 * @brief Set Scan Response Data 7007 * @param advertising_data_length 7008 * @param advertising_data (max 31 octets) 7009 * @note data is not copied, pointer has to stay valid 7010 */ 7011 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7012 hci_stack->le_scan_response_data_len = scan_response_data_length; 7013 hci_stack->le_scan_response_data = scan_response_data; 7014 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7015 hci_run(); 7016 } 7017 7018 /** 7019 * @brief Set Advertisement Parameters 7020 * @param adv_int_min 7021 * @param adv_int_max 7022 * @param adv_type 7023 * @param direct_address_type 7024 * @param direct_address 7025 * @param channel_map 7026 * @param filter_policy 7027 * 7028 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7029 */ 7030 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7031 uint8_t direct_address_typ, bd_addr_t direct_address, 7032 uint8_t channel_map, uint8_t filter_policy) { 7033 7034 hci_stack->le_advertisements_interval_min = adv_int_min; 7035 hci_stack->le_advertisements_interval_max = adv_int_max; 7036 hci_stack->le_advertisements_type = adv_type; 7037 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7038 hci_stack->le_advertisements_channel_map = channel_map; 7039 hci_stack->le_advertisements_filter_policy = filter_policy; 7040 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7041 6); 7042 7043 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7044 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7045 hci_run(); 7046 } 7047 7048 /** 7049 * @brief Enable/Disable Advertisements 7050 * @param enabled 7051 */ 7052 void gap_advertisements_enable(int enabled){ 7053 if (enabled == 0){ 7054 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7055 } else { 7056 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7057 } 7058 hci_update_advertisements_enabled_for_current_roles(); 7059 hci_run(); 7060 } 7061 7062 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7063 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7064 btstack_linked_list_iterator_t it; 7065 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7066 while (btstack_linked_list_iterator_has_next(&it)){ 7067 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7068 if ( item->advertising_handle == advertising_handle ) { 7069 return item; 7070 } 7071 } 7072 return NULL; 7073 } 7074 7075 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7076 // find free advertisement handle 7077 uint8_t advertisement_handle; 7078 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7079 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7080 } 7081 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7082 // clear 7083 memset(storage, 0, sizeof(le_advertising_set_t)); 7084 // copy params 7085 storage->advertising_handle = advertisement_handle; 7086 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7087 // add to list 7088 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7089 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7090 *out_advertising_handle = advertisement_handle; 7091 // set tasks and start 7092 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7093 hci_run(); 7094 return ERROR_CODE_SUCCESS; 7095 } 7096 7097 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7098 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7099 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7100 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7101 // set tasks and start 7102 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7103 hci_run(); 7104 return ERROR_CODE_SUCCESS; 7105 } 7106 7107 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7108 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7109 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7110 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7111 return ERROR_CODE_SUCCESS; 7112 } 7113 7114 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7115 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7116 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7117 memcpy(advertising_set->random_address, random_address, 6); 7118 // set tasks and start 7119 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7120 hci_run(); 7121 return ERROR_CODE_SUCCESS; 7122 } 7123 7124 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7125 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7126 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7127 advertising_set->adv_data = advertising_data; 7128 advertising_set->adv_data_len = advertising_data_length; 7129 // set tasks and start 7130 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7131 hci_run(); 7132 return ERROR_CODE_SUCCESS; 7133 } 7134 7135 uint8_t gap_extended_advertising_set_scan_response_data(uint8_t advertising_handle, uint16_t scan_response_data_length, const uint8_t * scan_response_data){ 7136 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7137 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7138 advertising_set->scan_data = scan_response_data; 7139 advertising_set->scan_data_len = scan_response_data_length; 7140 // set tasks and start 7141 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7142 hci_run(); 7143 return ERROR_CODE_SUCCESS; 7144 } 7145 7146 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7147 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7148 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7149 advertising_set->enable_timeout = timeout; 7150 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7151 // set tasks and start 7152 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7153 hci_run(); 7154 return ERROR_CODE_SUCCESS; 7155 } 7156 7157 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7158 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7159 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7160 // set tasks and start 7161 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7162 hci_run(); 7163 return ERROR_CODE_SUCCESS; 7164 } 7165 7166 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7167 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7168 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7169 // set tasks and start 7170 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7171 hci_run(); 7172 return ERROR_CODE_SUCCESS; 7173 } 7174 7175 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7176 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7177 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7178 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7179 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7180 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7181 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7182 // set tasks and start 7183 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7184 hci_run(); 7185 return ERROR_CODE_SUCCESS; 7186 } 7187 7188 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7189 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7190 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7191 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7192 return ERROR_CODE_SUCCESS; 7193 } 7194 7195 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7196 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7197 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7198 advertising_set->periodic_data = periodic_data; 7199 advertising_set->periodic_data_len = periodic_data_length; 7200 // set tasks and start 7201 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7202 hci_run(); 7203 return ERROR_CODE_SUCCESS; 7204 } 7205 7206 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7207 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7208 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7209 // set tasks and start 7210 advertising_set->periodic_include_adi = include_adi; 7211 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7212 hci_run(); 7213 return ERROR_CODE_SUCCESS; 7214 } 7215 7216 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7217 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7218 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7219 // set tasks and start 7220 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7221 hci_run(); 7222 return ERROR_CODE_SUCCESS; 7223 } 7224 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7225 7226 #endif 7227 7228 #endif 7229 7230 void hci_le_set_own_address_type(uint8_t own_address_type){ 7231 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7232 if (own_address_type == hci_stack->le_own_addr_type) return; 7233 hci_stack->le_own_addr_type = own_address_type; 7234 7235 #ifdef ENABLE_LE_PERIPHERAL 7236 // update advertisement parameters, too 7237 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7238 hci_run(); 7239 #endif 7240 #ifdef ENABLE_LE_CENTRAL 7241 // note: we don't update scan parameters or modify ongoing connection attempts 7242 #endif 7243 } 7244 7245 void hci_le_random_address_set(const bd_addr_t random_address){ 7246 memcpy(hci_stack->le_random_address, random_address, 6); 7247 hci_stack->le_random_address_set = true; 7248 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7249 hci_run(); 7250 } 7251 7252 #endif 7253 7254 uint8_t gap_disconnect(hci_con_handle_t handle){ 7255 hci_connection_t * conn = hci_connection_for_handle(handle); 7256 if (!conn){ 7257 hci_emit_disconnection_complete(handle, 0); 7258 return 0; 7259 } 7260 // ignore if already disconnected 7261 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7262 return 0; 7263 } 7264 conn->state = SEND_DISCONNECT; 7265 hci_run(); 7266 return 0; 7267 } 7268 7269 int gap_read_rssi(hci_con_handle_t con_handle){ 7270 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7271 if (hci_connection == NULL) return 0; 7272 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7273 hci_run(); 7274 return 1; 7275 } 7276 7277 /** 7278 * @brief Get connection type 7279 * @param con_handle 7280 * @result connection_type 7281 */ 7282 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7283 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7284 if (!conn) return GAP_CONNECTION_INVALID; 7285 switch (conn->address_type){ 7286 case BD_ADDR_TYPE_LE_PUBLIC: 7287 case BD_ADDR_TYPE_LE_RANDOM: 7288 return GAP_CONNECTION_LE; 7289 case BD_ADDR_TYPE_SCO: 7290 return GAP_CONNECTION_SCO; 7291 case BD_ADDR_TYPE_ACL: 7292 return GAP_CONNECTION_ACL; 7293 default: 7294 return GAP_CONNECTION_INVALID; 7295 } 7296 } 7297 7298 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7299 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7300 if (!conn) return HCI_ROLE_INVALID; 7301 return (hci_role_t) conn->role; 7302 } 7303 7304 7305 #ifdef ENABLE_CLASSIC 7306 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7307 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7308 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7309 conn->request_role = role; 7310 hci_run(); 7311 return ERROR_CODE_SUCCESS; 7312 } 7313 #endif 7314 7315 #ifdef ENABLE_BLE 7316 7317 uint8_t gap_le_set_phy(hci_con_handle_t con_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 7318 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7319 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7320 7321 conn->le_phy_update_all_phys = all_phys; 7322 conn->le_phy_update_tx_phys = tx_phys; 7323 conn->le_phy_update_rx_phys = rx_phys; 7324 conn->le_phy_update_phy_options = phy_options; 7325 7326 hci_run(); 7327 7328 return 0; 7329 } 7330 7331 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7332 // check if already in list 7333 btstack_linked_list_iterator_t it; 7334 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7335 while (btstack_linked_list_iterator_has_next(&it)) { 7336 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7337 if (entry->address_type != address_type) { 7338 continue; 7339 } 7340 if (memcmp(entry->address, address, 6) != 0) { 7341 continue; 7342 } 7343 // disallow if already scheduled to add 7344 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7345 return ERROR_CODE_COMMAND_DISALLOWED; 7346 } 7347 // still on controller, but scheduled to remove -> re-add 7348 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7349 return ERROR_CODE_SUCCESS; 7350 } 7351 // alloc and add to list 7352 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7353 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7354 entry->address_type = address_type; 7355 (void)memcpy(entry->address, address, 6); 7356 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7357 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7358 return ERROR_CODE_SUCCESS; 7359 } 7360 7361 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7362 btstack_linked_list_iterator_t it; 7363 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7364 while (btstack_linked_list_iterator_has_next(&it)){ 7365 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7366 if (entry->address_type != address_type) { 7367 continue; 7368 } 7369 if (memcmp(entry->address, address, 6) != 0) { 7370 continue; 7371 } 7372 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7373 // remove from controller if already present 7374 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7375 } else { 7376 // directly remove entry from whitelist 7377 btstack_linked_list_iterator_remove(&it); 7378 btstack_memory_whitelist_entry_free(entry); 7379 } 7380 return ERROR_CODE_SUCCESS; 7381 } 7382 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7383 } 7384 7385 static void hci_whitelist_clear(void){ 7386 btstack_linked_list_iterator_t it; 7387 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7388 while (btstack_linked_list_iterator_has_next(&it)){ 7389 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7390 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7391 // remove from controller if already present 7392 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7393 continue; 7394 } 7395 // directly remove entry from whitelist 7396 btstack_linked_list_iterator_remove(&it); 7397 btstack_memory_whitelist_entry_free(entry); 7398 } 7399 } 7400 7401 // free all entries unconditionally 7402 static void hci_whitelist_free(void){ 7403 btstack_linked_list_iterator_t lit; 7404 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7405 while (btstack_linked_list_iterator_has_next(&lit)){ 7406 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7407 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7408 btstack_memory_whitelist_entry_free(entry); 7409 } 7410 } 7411 7412 /** 7413 * @brief Clear Whitelist 7414 * @return 0 if ok 7415 */ 7416 uint8_t gap_whitelist_clear(void){ 7417 hci_whitelist_clear(); 7418 hci_run(); 7419 return ERROR_CODE_SUCCESS; 7420 } 7421 7422 /** 7423 * @brief Add Device to Whitelist 7424 * @param address_typ 7425 * @param address 7426 * @return 0 if ok 7427 */ 7428 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7429 uint8_t status = hci_whitelist_add(address_type, address); 7430 if (status){ 7431 return status; 7432 } 7433 hci_run(); 7434 return ERROR_CODE_SUCCESS; 7435 } 7436 7437 /** 7438 * @brief Remove Device from Whitelist 7439 * @param address_typ 7440 * @param address 7441 * @return 0 if ok 7442 */ 7443 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7444 uint8_t status = hci_whitelist_remove(address_type, address); 7445 if (status){ 7446 return status; 7447 } 7448 hci_run(); 7449 return ERROR_CODE_SUCCESS; 7450 } 7451 7452 #ifdef ENABLE_LE_CENTRAL 7453 /** 7454 * @brief Connect with Whitelist 7455 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 7456 * @return - if ok 7457 */ 7458 uint8_t gap_connect_with_whitelist(void){ 7459 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7460 return ERROR_CODE_COMMAND_DISALLOWED; 7461 } 7462 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7463 hci_run(); 7464 return ERROR_CODE_SUCCESS; 7465 } 7466 7467 /** 7468 * @brief Auto Connection Establishment - Start Connecting to device 7469 * @param address_typ 7470 * @param address 7471 * @return 0 if ok 7472 */ 7473 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 7474 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7475 return ERROR_CODE_COMMAND_DISALLOWED; 7476 } 7477 7478 uint8_t status = hci_whitelist_add(address_type, address); 7479 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 7480 return status; 7481 } 7482 7483 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7484 7485 hci_run(); 7486 return ERROR_CODE_SUCCESS; 7487 } 7488 7489 /** 7490 * @brief Auto Connection Establishment - Stop Connecting to device 7491 * @param address_typ 7492 * @param address 7493 * @return 0 if ok 7494 */ 7495 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 7496 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7497 return ERROR_CODE_COMMAND_DISALLOWED; 7498 } 7499 7500 hci_whitelist_remove(address_type, address); 7501 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 7502 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7503 } 7504 hci_run(); 7505 return 0; 7506 } 7507 7508 /** 7509 * @brief Auto Connection Establishment - Stop everything 7510 * @note Convenience function to stop all active auto connection attempts 7511 */ 7512 uint8_t gap_auto_connection_stop_all(void){ 7513 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 7514 return ERROR_CODE_COMMAND_DISALLOWED; 7515 } 7516 hci_whitelist_clear(); 7517 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7518 hci_run(); 7519 return ERROR_CODE_SUCCESS; 7520 } 7521 7522 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 7523 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7524 if (!conn) return 0; 7525 return conn->le_connection_interval; 7526 } 7527 #endif 7528 #endif 7529 7530 #ifdef ENABLE_CLASSIC 7531 /** 7532 * @brief Set Extended Inquiry Response data 7533 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 7534 * @note has to be done before stack starts up 7535 */ 7536 void gap_set_extended_inquiry_response(const uint8_t * data){ 7537 hci_stack->eir_data = data; 7538 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7539 hci_run(); 7540 } 7541 7542 /** 7543 * @brief Start GAP Classic Inquiry 7544 * @param duration in 1.28s units 7545 * @return 0 if ok 7546 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 7547 */ 7548 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 7549 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7550 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7551 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 7552 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7553 } 7554 hci_stack->inquiry_state = duration_in_1280ms_units; 7555 hci_stack->inquiry_max_period_length = 0; 7556 hci_stack->inquiry_min_period_length = 0; 7557 hci_run(); 7558 return 0; 7559 } 7560 7561 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 7562 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7563 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7564 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7565 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7566 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7567 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7568 7569 hci_stack->inquiry_state = duration; 7570 hci_stack->inquiry_max_period_length = max_period_length; 7571 hci_stack->inquiry_min_period_length = min_period_length; 7572 hci_run(); 7573 return 0; 7574 } 7575 7576 /** 7577 * @brief Stop GAP Classic Inquiry 7578 * @return 0 if ok 7579 */ 7580 int gap_inquiry_stop(void){ 7581 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 7582 // emit inquiry complete event, before it even started 7583 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 7584 hci_emit_event(event, sizeof(event), 1); 7585 return 0; 7586 } 7587 switch (hci_stack->inquiry_state){ 7588 case GAP_INQUIRY_STATE_ACTIVE: 7589 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 7590 hci_run(); 7591 return ERROR_CODE_SUCCESS; 7592 case GAP_INQUIRY_STATE_PERIODIC: 7593 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 7594 hci_run(); 7595 return ERROR_CODE_SUCCESS; 7596 default: 7597 return ERROR_CODE_COMMAND_DISALLOWED; 7598 } 7599 } 7600 7601 void gap_inquiry_set_lap(uint32_t lap){ 7602 hci_stack->inquiry_lap = lap; 7603 } 7604 7605 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 7606 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 7607 hci_stack->inquiry_scan_window = inquiry_scan_window; 7608 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 7609 hci_run(); 7610 } 7611 7612 7613 /** 7614 * @brief Remote Name Request 7615 * @param addr 7616 * @param page_scan_repetition_mode 7617 * @param clock_offset only used when bit 15 is set 7618 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 7619 */ 7620 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 7621 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7622 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 7623 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 7624 hci_stack->remote_name_clock_offset = clock_offset; 7625 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 7626 hci_run(); 7627 return 0; 7628 } 7629 7630 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 7631 hci_stack->gap_pairing_state = state; 7632 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 7633 hci_run(); 7634 return 0; 7635 } 7636 7637 /** 7638 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 7639 * @param addr 7640 * @param pin_data 7641 * @param pin_len 7642 * @return 0 if ok 7643 */ 7644 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 7645 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7646 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 7647 hci_stack->gap_pairing_pin_len = pin_len; 7648 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 7649 } 7650 7651 /** 7652 * @brief Legacy Pairing Pin Code Response 7653 * @param addr 7654 * @param pin 7655 * @return 0 if ok 7656 */ 7657 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 7658 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, strlen(pin)); 7659 } 7660 7661 /** 7662 * @brief Abort Legacy Pairing 7663 * @param addr 7664 * @param pin 7665 * @return 0 if ok 7666 */ 7667 int gap_pin_code_negative(bd_addr_t addr){ 7668 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7669 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 7670 } 7671 7672 /** 7673 * @brief SSP Passkey Response 7674 * @param addr 7675 * @param passkey 7676 * @return 0 if ok 7677 */ 7678 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 7679 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7680 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 7681 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 7682 } 7683 7684 /** 7685 * @brief Abort SSP Passkey Entry/Pairing 7686 * @param addr 7687 * @param pin 7688 * @return 0 if ok 7689 */ 7690 int gap_ssp_passkey_negative(const bd_addr_t addr){ 7691 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7692 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 7693 } 7694 7695 /** 7696 * @brief Accept SSP Numeric Comparison 7697 * @param addr 7698 * @param passkey 7699 * @return 0 if ok 7700 */ 7701 int gap_ssp_confirmation_response(const bd_addr_t addr){ 7702 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7703 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 7704 } 7705 7706 /** 7707 * @brief Abort SSP Numeric Comparison/Pairing 7708 * @param addr 7709 * @param pin 7710 * @return 0 if ok 7711 */ 7712 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 7713 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7714 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 7715 } 7716 7717 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 7718 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 7719 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7720 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7721 connectionSetAuthenticationFlags(conn, flag); 7722 hci_run(); 7723 return ERROR_CODE_SUCCESS; 7724 } 7725 #endif 7726 7727 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 7728 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 7729 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7730 } 7731 7732 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 7733 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7734 } 7735 #endif 7736 7737 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7738 /** 7739 * @brief Report Remote OOB Data 7740 * @param bd_addr 7741 * @param c_192 Simple Pairing Hash C derived from P-192 public key 7742 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 7743 * @param c_256 Simple Pairing Hash C derived from P-256 public key 7744 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 7745 */ 7746 uint8_t gap_ssp_remote_oob_data(const bd_addr_t addr, const uint8_t * c_192, const uint8_t * r_192, const uint8_t * c_256, const uint8_t * r_256){ 7747 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7748 if (connection == NULL) { 7749 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7750 } 7751 connection->classic_oob_c_192 = c_192; 7752 connection->classic_oob_r_192 = r_192; 7753 7754 // ignore P-256 if not supported by us 7755 if (hci_stack->secure_connections_active){ 7756 connection->classic_oob_c_256 = c_256; 7757 connection->classic_oob_r_256 = r_256; 7758 } 7759 7760 return ERROR_CODE_SUCCESS; 7761 } 7762 /** 7763 * @brief Generate new OOB data 7764 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 7765 */ 7766 void gap_ssp_generate_oob_data(void){ 7767 hci_stack->classic_read_local_oob_data = true; 7768 hci_run(); 7769 } 7770 7771 #endif 7772 7773 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 7774 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 7775 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7776 if (connection == NULL) { 7777 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7778 } 7779 7780 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 7781 connection->link_key_type = type; 7782 7783 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7784 } 7785 7786 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 7787 /** 7788 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 7789 * @param inquiry_mode see bluetooth_defines.h 7790 */ 7791 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 7792 hci_stack->inquiry_mode = inquiry_mode; 7793 } 7794 7795 /** 7796 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 7797 */ 7798 void hci_set_sco_voice_setting(uint16_t voice_setting){ 7799 hci_stack->sco_voice_setting = voice_setting; 7800 } 7801 7802 /** 7803 * @brief Get SCO Voice Setting 7804 * @return current voice setting 7805 */ 7806 uint16_t hci_get_sco_voice_setting(void){ 7807 return hci_stack->sco_voice_setting; 7808 } 7809 7810 static int hci_have_usb_transport(void){ 7811 if (!hci_stack->hci_transport) return 0; 7812 const char * transport_name = hci_stack->hci_transport->name; 7813 if (!transport_name) return 0; 7814 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 7815 } 7816 7817 /** @brief Get SCO packet length for current SCO Voice setting 7818 * @note Using SCO packets of the exact length is required for USB transfer 7819 * @return Length of SCO packets in bytes (not audio frames) 7820 */ 7821 uint16_t hci_get_sco_packet_length(void){ 7822 uint16_t sco_packet_length = 0; 7823 7824 #ifdef ENABLE_SCO_OVER_HCI 7825 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 7826 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 7827 7828 if (hci_have_usb_transport()){ 7829 // see Core Spec for H2 USB Transfer. 7830 // 3 byte SCO header + 24 bytes per connection 7831 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 7832 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 7833 } else { 7834 // 3 byte SCO header + SCO packet size over the air (60 bytes) 7835 sco_packet_length = 3 + 60 * multiplier; 7836 // assert that it still fits inside an SCO buffer 7837 if (sco_packet_length > hci_stack->sco_data_packet_length){ 7838 sco_packet_length = 3 + 60; 7839 } 7840 } 7841 #endif 7842 7843 #ifdef HAVE_SCO_TRANSPORT 7844 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 7845 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 7846 sco_packet_length = 3 + 60 * multiplier; 7847 #endif 7848 return sco_packet_length; 7849 } 7850 7851 /** 7852 * @brief Sets the master/slave policy 7853 * @param policy (0: attempt to become master, 1: let connecting device decide) 7854 */ 7855 void hci_set_master_slave_policy(uint8_t policy){ 7856 hci_stack->master_slave_policy = policy; 7857 } 7858 7859 #endif 7860 7861 HCI_STATE hci_get_state(void){ 7862 return hci_stack->state; 7863 } 7864 7865 #ifdef ENABLE_CLASSIC 7866 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 7867 hci_stack->gap_classic_accept_callback = accept_callback; 7868 } 7869 #endif 7870 7871 /** 7872 * @brief Set callback for Bluetooth Hardware Error 7873 */ 7874 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 7875 hci_stack->hardware_error_callback = fn; 7876 } 7877 7878 void hci_disconnect_all(void){ 7879 btstack_linked_list_iterator_t it; 7880 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 7881 while (btstack_linked_list_iterator_has_next(&it)){ 7882 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 7883 if (con->state == SENT_DISCONNECT) continue; 7884 con->state = SEND_DISCONNECT; 7885 } 7886 hci_run(); 7887 } 7888 7889 uint16_t hci_get_manufacturer(void){ 7890 return hci_stack->manufacturer; 7891 } 7892 7893 #ifdef ENABLE_BLE 7894 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 7895 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 7896 if (!hci_con) return NULL; 7897 return &hci_con->sm_connection; 7898 } 7899 7900 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 7901 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 7902 #endif 7903 7904 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 7905 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7906 if (hci_connection == NULL) return 0; 7907 if (hci_is_le_connection(hci_connection)){ 7908 #ifdef ENABLE_BLE 7909 sm_connection_t * sm_conn = &hci_connection->sm_connection; 7910 if (sm_conn->sm_connection_encrypted) { 7911 return sm_conn->sm_actual_encryption_key_size; 7912 } 7913 #endif 7914 } else { 7915 #ifdef ENABLE_CLASSIC 7916 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 7917 return hci_connection->encryption_key_size; 7918 } 7919 #endif 7920 } 7921 return 0; 7922 } 7923 7924 bool gap_authenticated(hci_con_handle_t con_handle){ 7925 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7926 if (hci_connection == NULL) return false; 7927 7928 switch (hci_connection->address_type){ 7929 #ifdef ENABLE_BLE 7930 case BD_ADDR_TYPE_LE_PUBLIC: 7931 case BD_ADDR_TYPE_LE_RANDOM: 7932 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 7933 return hci_connection->sm_connection.sm_connection_authenticated != 0; 7934 #endif 7935 #ifdef ENABLE_CLASSIC 7936 case BD_ADDR_TYPE_SCO: 7937 case BD_ADDR_TYPE_ACL: 7938 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 7939 #endif 7940 default: 7941 return false; 7942 } 7943 } 7944 7945 bool gap_secure_connection(hci_con_handle_t con_handle){ 7946 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7947 if (hci_connection == NULL) return 0; 7948 7949 switch (hci_connection->address_type){ 7950 #ifdef ENABLE_BLE 7951 case BD_ADDR_TYPE_LE_PUBLIC: 7952 case BD_ADDR_TYPE_LE_RANDOM: 7953 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 7954 return hci_connection->sm_connection.sm_connection_sc != 0; 7955 #endif 7956 #ifdef ENABLE_CLASSIC 7957 case BD_ADDR_TYPE_SCO: 7958 case BD_ADDR_TYPE_ACL: 7959 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 7960 #endif 7961 default: 7962 return false; 7963 } 7964 } 7965 7966 bool gap_bonded(hci_con_handle_t con_handle){ 7967 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7968 if (hci_connection == NULL) return 0; 7969 7970 #ifdef ENABLE_CLASSIC 7971 link_key_t link_key; 7972 link_key_type_t link_key_type; 7973 #endif 7974 switch (hci_connection->address_type){ 7975 #ifdef ENABLE_BLE 7976 case BD_ADDR_TYPE_LE_PUBLIC: 7977 case BD_ADDR_TYPE_LE_RANDOM: 7978 return hci_connection->sm_connection.sm_le_db_index >= 0; 7979 #endif 7980 #ifdef ENABLE_CLASSIC 7981 case BD_ADDR_TYPE_SCO: 7982 case BD_ADDR_TYPE_ACL: 7983 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 7984 #endif 7985 default: 7986 return false; 7987 } 7988 } 7989 7990 #ifdef ENABLE_BLE 7991 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 7992 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 7993 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 7994 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 7995 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 7996 return sm_conn->sm_connection_authorization_state; 7997 } 7998 #endif 7999 8000 #ifdef ENABLE_CLASSIC 8001 uint8_t gap_sniff_mode_enter(hci_con_handle_t con_handle, uint16_t sniff_min_interval, uint16_t sniff_max_interval, uint16_t sniff_attempt, uint16_t sniff_timeout){ 8002 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8003 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8004 conn->sniff_min_interval = sniff_min_interval; 8005 conn->sniff_max_interval = sniff_max_interval; 8006 conn->sniff_attempt = sniff_attempt; 8007 conn->sniff_timeout = sniff_timeout; 8008 hci_run(); 8009 return 0; 8010 } 8011 8012 /** 8013 * @brief Exit Sniff mode 8014 * @param con_handle 8015 @ @return 0 if ok 8016 */ 8017 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8018 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8019 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8020 conn->sniff_min_interval = 0xffff; 8021 hci_run(); 8022 return 0; 8023 } 8024 8025 uint8_t gap_sniff_subrating_configure(hci_con_handle_t con_handle, uint16_t max_latency, uint16_t min_remote_timeout, uint16_t min_local_timeout){ 8026 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8027 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8028 conn->sniff_subrating_max_latency = max_latency; 8029 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8030 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8031 hci_run(); 8032 return ERROR_CODE_SUCCESS; 8033 } 8034 8035 uint8_t gap_qos_set(hci_con_handle_t con_handle, hci_service_type_t service_type, uint32_t token_rate, uint32_t peak_bandwidth, uint32_t latency, uint32_t delay_variation){ 8036 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8037 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8038 conn->qos_service_type = service_type; 8039 conn->qos_token_rate = token_rate; 8040 conn->qos_peak_bandwidth = peak_bandwidth; 8041 conn->qos_latency = latency; 8042 conn->qos_delay_variation = delay_variation; 8043 hci_run(); 8044 return ERROR_CODE_SUCCESS; 8045 } 8046 8047 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8048 hci_stack->new_page_scan_interval = page_scan_interval; 8049 hci_stack->new_page_scan_window = page_scan_window; 8050 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8051 hci_run(); 8052 } 8053 8054 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8055 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8056 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8057 hci_run(); 8058 } 8059 8060 void gap_set_page_timeout(uint16_t page_timeout){ 8061 hci_stack->page_timeout = page_timeout; 8062 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8063 hci_run(); 8064 } 8065 8066 #endif 8067 8068 void hci_halting_defer(void){ 8069 if (hci_stack->state != HCI_STATE_HALTING) return; 8070 switch (hci_stack->substate){ 8071 case HCI_HALTING_READY_FOR_CLOSE: 8072 hci_stack->substate = HCI_HALTING_DEFER_CLOSE; 8073 break; 8074 default: 8075 break; 8076 } 8077 } 8078 8079 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8080 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8081 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8082 if (le_device_db_index >= le_device_db_max_count()) return; 8083 uint8_t offset = le_device_db_index >> 3; 8084 uint8_t mask = 1 << (le_device_db_index & 7); 8085 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8086 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8087 // note: go back to remove entries, otherwise, a remove + add will skip the add 8088 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8089 } 8090 } 8091 8092 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8093 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8094 if (le_device_db_index >= le_device_db_max_count()) return; 8095 uint8_t offset = le_device_db_index >> 3; 8096 uint8_t mask = 1 << (le_device_db_index & 7); 8097 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8098 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8099 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8100 } 8101 } 8102 8103 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8104 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8105 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8106 } 8107 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8108 // restart le resolving list update 8109 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8110 } 8111 return ERROR_CODE_SUCCESS; 8112 } 8113 #endif 8114 8115 #ifdef ENABLE_BLE 8116 #ifdef ENABLE_LE_CENTRAL 8117 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8118 8119 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8120 // check if already in list 8121 btstack_linked_list_iterator_t it; 8122 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8123 while (btstack_linked_list_iterator_has_next(&it)) { 8124 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8125 if (entry->sid != advertising_sid) { 8126 continue; 8127 } 8128 if (entry->address_type != address_type) { 8129 continue; 8130 } 8131 if (memcmp(entry->address, address, 6) != 0) { 8132 continue; 8133 } 8134 // disallow if already scheduled to add 8135 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8136 return ERROR_CODE_COMMAND_DISALLOWED; 8137 } 8138 // still on controller, but scheduled to remove -> re-add 8139 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8140 return ERROR_CODE_SUCCESS; 8141 } 8142 // alloc and add to list 8143 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8144 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8145 entry->sid = advertising_sid; 8146 entry->address_type = address_type; 8147 (void)memcpy(entry->address, address, 6); 8148 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8149 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8150 return ERROR_CODE_SUCCESS; 8151 } 8152 8153 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8154 btstack_linked_list_iterator_t it; 8155 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8156 while (btstack_linked_list_iterator_has_next(&it)){ 8157 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8158 if (entry->sid != advertising_sid) { 8159 continue; 8160 } 8161 if (entry->address_type != address_type) { 8162 continue; 8163 } 8164 if (memcmp(entry->address, address, 6) != 0) { 8165 continue; 8166 } 8167 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8168 // remove from controller if already present 8169 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8170 } else { 8171 // directly remove entry from whitelist 8172 btstack_linked_list_iterator_remove(&it); 8173 btstack_memory_periodic_advertiser_list_entry_free(entry); 8174 } 8175 return ERROR_CODE_SUCCESS; 8176 } 8177 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8178 } 8179 8180 static void hci_periodic_advertiser_list_clear(void){ 8181 btstack_linked_list_iterator_t it; 8182 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8183 while (btstack_linked_list_iterator_has_next(&it)){ 8184 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8185 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8186 // remove from controller if already present 8187 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8188 continue; 8189 } 8190 // directly remove entry from whitelist 8191 btstack_linked_list_iterator_remove(&it); 8192 btstack_memory_periodic_advertiser_list_entry_free(entry); 8193 } 8194 } 8195 8196 // free all entries unconditionally 8197 static void hci_periodic_advertiser_list_free(void){ 8198 btstack_linked_list_iterator_t lit; 8199 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8200 while (btstack_linked_list_iterator_has_next(&lit)){ 8201 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8202 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8203 btstack_memory_periodic_advertiser_list_entry_free(entry); 8204 } 8205 } 8206 8207 uint8_t gap_periodic_advertiser_list_clear(void){ 8208 hci_periodic_advertiser_list_clear(); 8209 hci_run(); 8210 return ERROR_CODE_SUCCESS; 8211 } 8212 8213 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8214 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8215 if (status){ 8216 return status; 8217 } 8218 hci_run(); 8219 return ERROR_CODE_SUCCESS; 8220 } 8221 8222 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8223 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8224 if (status){ 8225 return status; 8226 } 8227 hci_run(); 8228 return ERROR_CODE_SUCCESS; 8229 } 8230 8231 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8232 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8233 // abort if already active 8234 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8235 return ERROR_CODE_COMMAND_DISALLOWED; 8236 } 8237 // store request 8238 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8239 hci_stack->le_periodic_sync_options = options; 8240 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8241 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8242 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8243 hci_stack->le_periodic_sync_skip = skip; 8244 hci_stack->le_periodic_sync_timeout = sync_timeout; 8245 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8246 8247 hci_run(); 8248 return ERROR_CODE_SUCCESS; 8249 } 8250 8251 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8252 // abort if not requested 8253 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8254 return ERROR_CODE_COMMAND_DISALLOWED; 8255 } 8256 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8257 hci_run(); 8258 return ERROR_CODE_SUCCESS; 8259 } 8260 8261 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8262 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8263 return ERROR_CODE_COMMAND_DISALLOWED; 8264 } 8265 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8266 hci_run(); 8267 return ERROR_CODE_SUCCESS; 8268 } 8269 8270 #endif 8271 #endif 8272 #endif 8273 8274 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 8275 void hci_setup_test_connections_fuzz(void){ 8276 hci_connection_t * conn; 8277 8278 // default address: 66:55:44:33:00:01 8279 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 8280 8281 // setup Controller info 8282 hci_stack->num_cmd_packets = 255; 8283 hci_stack->acl_packets_total_num = 255; 8284 8285 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 8286 addr[5] = 0x01; 8287 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8288 conn->con_handle = addr[5]; 8289 conn->role = HCI_ROLE_SLAVE; 8290 conn->state = RECEIVED_CONNECTION_REQUEST; 8291 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8292 8293 // setup incoming Classic SCO connection with con handle 0x0002 8294 addr[5] = 0x02; 8295 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8296 conn->con_handle = addr[5]; 8297 conn->role = HCI_ROLE_SLAVE; 8298 conn->state = RECEIVED_CONNECTION_REQUEST; 8299 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8300 8301 // setup ready Classic ACL connection with con handle 0x0003 8302 addr[5] = 0x03; 8303 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8304 conn->con_handle = addr[5]; 8305 conn->role = HCI_ROLE_SLAVE; 8306 conn->state = OPEN; 8307 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8308 8309 // setup ready Classic SCO connection with con handle 0x0004 8310 addr[5] = 0x04; 8311 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8312 conn->con_handle = addr[5]; 8313 conn->role = HCI_ROLE_SLAVE; 8314 conn->state = OPEN; 8315 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8316 8317 // setup ready LE ACL connection with con handle 0x005 and public address 8318 addr[5] = 0x05; 8319 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 8320 conn->con_handle = addr[5]; 8321 conn->role = HCI_ROLE_SLAVE; 8322 conn->state = OPEN; 8323 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8324 conn->sm_connection.sm_connection_encrypted = 1; 8325 } 8326 8327 void hci_free_connections_fuzz(void){ 8328 btstack_linked_list_iterator_t it; 8329 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8330 while (btstack_linked_list_iterator_has_next(&it)){ 8331 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8332 btstack_linked_list_iterator_remove(&it); 8333 btstack_memory_hci_connection_free(con); 8334 } 8335 } 8336 void hci_simulate_working_fuzz(void){ 8337 hci_stack->le_scanning_param_update = false; 8338 hci_init_done(); 8339 hci_stack->num_cmd_packets = 255; 8340 } 8341 #endif 8342