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 123 124 // GAP Remote Name Request 125 #define GAP_REMOTE_NAME_STATE_IDLE 0 126 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 127 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 128 129 // GAP Pairing 130 #define GAP_PAIRING_STATE_IDLE 0 131 #define GAP_PAIRING_STATE_SEND_PIN 1 132 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 133 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 134 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 135 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 136 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 137 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 138 139 // 140 // compact storage of relevant supported HCI Commands. 141 // X-Macro below provides enumeration and mapping table into the supported 142 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 143 // 144 145 // format: command name, byte offset, bit nr in 64-byte supported commands 146 // currently stored in 32-bit variable 147 #define SUPPORTED_HCI_COMMANDS \ 148 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 149 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 150 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 151 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 152 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 153 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 154 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 155 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 156 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 157 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 158 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 159 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 160 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 161 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 162 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 163 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 164 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 165 166 // enumerate supported commands 167 #define X(name, offset, bit) name, 168 enum { 169 SUPPORTED_HCI_COMMANDS 170 SUPPORTED_HCI_COMMANDS_COUNT 171 }; 172 #undef X 173 174 // prototypes 175 #ifdef ENABLE_CLASSIC 176 static void hci_update_scan_enable(void); 177 static void hci_emit_discoverable_enabled(uint8_t enabled); 178 static int hci_local_ssp_activated(void); 179 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 180 static bool hci_ssp_supported(hci_connection_t * connection); 181 static void hci_notify_if_sco_can_send_now(void); 182 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 183 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 184 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 185 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 186 static void hci_connection_timestamp(hci_connection_t *connection); 187 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 188 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 189 #endif 190 191 static int hci_power_control_on(void); 192 static void hci_power_control_off(void); 193 static void hci_state_reset(void); 194 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 195 static void hci_emit_transport_packet_sent(void); 196 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 197 static void hci_emit_nr_connections_changed(void); 198 static void hci_emit_hci_open_failed(void); 199 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 200 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 201 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 202 static void hci_run(void); 203 static int hci_is_le_connection(hci_connection_t * connection); 204 205 #ifdef ENABLE_CLASSIC 206 static int hci_have_usb_transport(void); 207 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 208 #endif 209 210 #ifdef ENABLE_BLE 211 static void hci_whitelist_free(void); 212 #ifdef ENABLE_LE_CENTRAL 213 // called from test/ble_client/advertising_data_parser.c 214 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 215 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 216 static hci_connection_t * gap_get_outgoing_connection(void); 217 static void hci_le_scan_stop(void); 218 static bool hci_run_general_gap_le(void); 219 #endif 220 #ifdef ENABLE_LE_PERIPHERAL 221 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 222 static void hci_periodic_advertiser_list_free(void); 223 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 224 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 225 #endif /* ENABLE_LE_PERIPHERAL */ 226 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 227 static uint8_t hci_iso_stream_create(hci_con_handle_t cis_handle); 228 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 229 static hci_iso_stream_t * hci_iso_stream_for_cis_handle(hci_con_handle_t cis_handle); 230 static void hci_iso_stream_requested_finalize(void); 231 static void hci_iso_stream_requested_confirm(void); 232 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 233 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 234 #endif /* ENABLE_BLE */ 235 236 // the STACK is here 237 #ifndef HAVE_MALLOC 238 static hci_stack_t hci_stack_static; 239 #endif 240 static hci_stack_t * hci_stack = NULL; 241 242 #ifdef ENABLE_CLASSIC 243 // default name 244 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 245 246 // test helper 247 static uint8_t disable_l2cap_timeouts = 0; 248 #endif 249 250 // reset connection state on create and on reconnect 251 // don't overwrite addr, con handle, role 252 static void hci_connection_init(hci_connection_t * conn){ 253 conn->authentication_flags = AUTH_FLAG_NONE; 254 conn->bonding_flags = 0; 255 conn->requested_security_level = LEVEL_0; 256 #ifdef ENABLE_CLASSIC 257 conn->request_role = HCI_ROLE_INVALID; 258 conn->sniff_subrating_max_latency = 0xffff; 259 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 260 conn->link_key_type = INVALID_LINK_KEY; 261 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 262 btstack_run_loop_set_timer_context(&conn->timeout, conn); 263 hci_connection_timestamp(conn); 264 #endif 265 conn->acl_recombination_length = 0; 266 conn->acl_recombination_pos = 0; 267 conn->num_packets_sent = 0; 268 269 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 270 #ifdef ENABLE_BLE 271 conn->le_phy_update_all_phys = 0xff; 272 #endif 273 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 274 conn->le_max_tx_octets = 27; 275 #endif 276 #ifdef ENABLE_CLASSIC_PAIRING_OOB 277 conn->classic_oob_c_192 = NULL; 278 conn->classic_oob_r_192 = NULL; 279 conn->classic_oob_c_256 = NULL; 280 conn->classic_oob_r_256 = NULL; 281 #endif 282 } 283 284 /** 285 * create connection for given address 286 * 287 * @return connection OR NULL, if no memory left 288 */ 289 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 290 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 291 292 hci_connection_t * conn = btstack_memory_hci_connection_get(); 293 if (!conn) return NULL; 294 hci_connection_init(conn); 295 296 bd_addr_copy(conn->address, addr); 297 conn->address_type = addr_type; 298 conn->con_handle = HCI_CON_HANDLE_INVALID; 299 conn->role = HCI_ROLE_INVALID; 300 301 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 302 303 return conn; 304 } 305 306 307 /** 308 * get le connection parameter range 309 * 310 * @return le connection parameter range struct 311 */ 312 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 313 *range = hci_stack->le_connection_parameter_range; 314 } 315 316 /** 317 * set le connection parameter range 318 * 319 */ 320 321 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 322 hci_stack->le_connection_parameter_range = *range; 323 } 324 325 /** 326 * @brief Test if connection parameters are inside in existing rage 327 * @param conn_interval_min (unit: 1.25ms) 328 * @param conn_interval_max (unit: 1.25ms) 329 * @param conn_latency 330 * @param supervision_timeout (unit: 10ms) 331 * @return 1 if included 332 */ 333 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){ 334 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 335 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 336 337 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 338 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 339 340 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 341 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 342 343 return 1; 344 } 345 346 /** 347 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 348 * @note: default: 1 349 * @param max_peripheral_connections 350 */ 351 #ifdef ENABLE_LE_PERIPHERAL 352 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 353 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 354 } 355 #endif 356 357 /** 358 * get hci connections iterator 359 * 360 * @return hci connections iterator 361 */ 362 363 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 364 btstack_linked_list_iterator_init(it, &hci_stack->connections); 365 } 366 367 /** 368 * get connection for a given handle 369 * 370 * @return connection OR NULL, if not found 371 */ 372 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 373 btstack_linked_list_iterator_t it; 374 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 375 while (btstack_linked_list_iterator_has_next(&it)){ 376 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 377 if ( item->con_handle == con_handle ) { 378 return item; 379 } 380 } 381 return NULL; 382 } 383 384 /** 385 * get connection for given address 386 * 387 * @return connection OR NULL, if not found 388 */ 389 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 390 btstack_linked_list_iterator_t it; 391 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 392 while (btstack_linked_list_iterator_has_next(&it)){ 393 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 394 if (connection->address_type != addr_type) continue; 395 if (memcmp(addr, connection->address, 6) != 0) continue; 396 return connection; 397 } 398 return NULL; 399 } 400 401 #ifdef ENABLE_CLASSIC 402 403 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 404 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 405 } 406 407 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 408 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 409 } 410 411 #ifdef ENABLE_SCO_OVER_HCI 412 static int hci_number_sco_connections(void){ 413 int connections = 0; 414 btstack_linked_list_iterator_t it; 415 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 416 while (btstack_linked_list_iterator_has_next(&it)){ 417 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 418 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 419 connections++; 420 } 421 return connections; 422 } 423 #endif 424 425 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 426 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 427 #ifdef HAVE_EMBEDDED_TICK 428 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 429 // connections might be timed out 430 hci_emit_l2cap_check_timeout(connection); 431 } 432 #else 433 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 434 // connections might be timed out 435 hci_emit_l2cap_check_timeout(connection); 436 } 437 #endif 438 } 439 440 static void hci_connection_timestamp(hci_connection_t *connection){ 441 #ifdef HAVE_EMBEDDED_TICK 442 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 443 #else 444 connection->timestamp = btstack_run_loop_get_time_ms(); 445 #endif 446 } 447 448 /** 449 * add authentication flags and reset timer 450 * @note: assumes classic connection 451 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 452 */ 453 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 454 bd_addr_t addr; 455 reverse_bd_addr(bd_addr, addr); 456 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 457 if (conn) { 458 connectionSetAuthenticationFlags(conn, flags); 459 hci_connection_timestamp(conn); 460 } 461 } 462 463 static bool hci_pairing_active(hci_connection_t * hci_connection){ 464 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 465 } 466 467 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 468 if (hci_pairing_active(hci_connection)) return; 469 if (ssp){ 470 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 471 } else { 472 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 473 } 474 // if we are initiator, we have sent an HCI Authenticate Request 475 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 476 477 // if we are responder, use minimal service security level as required level 478 if (!initiator){ 479 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); 480 } 481 482 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 483 484 uint8_t event[12]; 485 event[0] = GAP_EVENT_PAIRING_STARTED; 486 event[1] = 10; 487 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 488 reverse_bd_addr(hci_connection->address, &event[4]); 489 event[10] = (uint8_t) ssp; 490 event[11] = (uint8_t) initiator; 491 hci_emit_event(event, sizeof(event), 1); 492 } 493 494 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 495 hci_connection->requested_security_level = LEVEL_0; 496 if (!hci_pairing_active(hci_connection)) return; 497 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 498 #ifdef ENABLE_CLASSIC_PAIRING_OOB 499 hci_connection->classic_oob_c_192 = NULL; 500 hci_connection->classic_oob_r_192 = NULL; 501 hci_connection->classic_oob_c_256 = NULL; 502 hci_connection->classic_oob_r_256 = NULL; 503 #endif 504 log_info("pairing complete, status %02x", status); 505 506 uint8_t event[11]; 507 event[0] = GAP_EVENT_PAIRING_COMPLETE; 508 event[1] = 9; 509 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 510 reverse_bd_addr(hci_connection->address, &event[4]); 511 event[10] = status; 512 hci_emit_event(event, sizeof(event), 1); 513 514 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 515 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 516 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 517 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 518 hci_connection->bonding_status = status; 519 } 520 } 521 522 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 523 hci_connection_t * conn = hci_connection_for_handle(handle); 524 if (!conn) return false; 525 return hci_pairing_active(conn); 526 } 527 528 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 529 if (!hci_stack->link_key_db) return; 530 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 531 hci_stack->link_key_db->delete_link_key(addr); 532 } 533 534 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 535 if (!hci_stack->link_key_db) return; 536 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 537 hci_stack->link_key_db->put_link_key(addr, link_key, type); 538 } 539 540 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 541 if (!hci_stack->link_key_db) return false; 542 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 543 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 544 return result; 545 } 546 547 void gap_delete_all_link_keys(void){ 548 bd_addr_t addr; 549 link_key_t link_key; 550 link_key_type_t type; 551 btstack_link_key_iterator_t it; 552 int ok = gap_link_key_iterator_init(&it); 553 if (!ok) { 554 log_error("could not initialize iterator"); 555 return; 556 } 557 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 558 gap_drop_link_key_for_bd_addr(addr); 559 } 560 gap_link_key_iterator_done(&it); 561 } 562 563 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 564 if (!hci_stack->link_key_db) return 0; 565 if (!hci_stack->link_key_db->iterator_init) return 0; 566 return hci_stack->link_key_db->iterator_init(it); 567 } 568 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){ 569 if (!hci_stack->link_key_db) return 0; 570 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 571 } 572 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 573 if (!hci_stack->link_key_db) return; 574 hci_stack->link_key_db->iterator_done(it); 575 } 576 #endif 577 578 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 579 switch (address_type){ 580 case BD_ADDR_TYPE_LE_PUBLIC: 581 case BD_ADDR_TYPE_LE_RANDOM: 582 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 583 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 584 return true; 585 default: 586 return false; 587 } 588 } 589 590 static int hci_is_le_connection(hci_connection_t * connection){ 591 return hci_is_le_connection_type(connection->address_type); 592 } 593 594 /** 595 * count connections 596 */ 597 static int nr_hci_connections(void){ 598 int count = 0; 599 btstack_linked_item_t *it; 600 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 601 count++; 602 } 603 return count; 604 } 605 606 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 607 608 unsigned int num_packets_sent_classic = 0; 609 unsigned int num_packets_sent_le = 0; 610 611 btstack_linked_item_t *it; 612 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 613 hci_connection_t * connection = (hci_connection_t *) it; 614 if (hci_is_le_connection(connection)){ 615 num_packets_sent_le += connection->num_packets_sent; 616 } 617 if (connection->address_type == BD_ADDR_TYPE_ACL){ 618 num_packets_sent_classic += connection->num_packets_sent; 619 } 620 } 621 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 622 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 623 int free_slots_le = 0; 624 625 if (free_slots_classic < 0){ 626 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); 627 return 0; 628 } 629 630 if (hci_stack->le_acl_packets_total_num){ 631 // if we have LE slots, they are used 632 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 633 if (free_slots_le < 0){ 634 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); 635 return 0; 636 } 637 } else { 638 // otherwise, classic slots are used for LE, too 639 free_slots_classic -= num_packets_sent_le; 640 if (free_slots_classic < 0){ 641 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); 642 return 0; 643 } 644 } 645 646 switch (address_type){ 647 case BD_ADDR_TYPE_UNKNOWN: 648 log_error("hci_number_free_acl_slots: unknown address type"); 649 return 0; 650 651 case BD_ADDR_TYPE_ACL: 652 return (uint16_t) free_slots_classic; 653 654 default: 655 if (hci_stack->le_acl_packets_total_num > 0){ 656 return (uint16_t) free_slots_le; 657 } 658 return (uint16_t) free_slots_classic; 659 } 660 } 661 662 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 663 // get connection type 664 hci_connection_t * connection = hci_connection_for_handle(con_handle); 665 if (!connection){ 666 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 667 return 0; 668 } 669 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 670 } 671 672 #ifdef ENABLE_CLASSIC 673 static int hci_number_free_sco_slots(void){ 674 unsigned int num_sco_packets_sent = 0; 675 btstack_linked_item_t *it; 676 if (hci_stack->synchronous_flow_control_enabled){ 677 // explicit flow control 678 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 679 hci_connection_t * connection = (hci_connection_t *) it; 680 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 681 num_sco_packets_sent += connection->num_packets_sent; 682 } 683 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 684 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 685 return 0; 686 } 687 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 688 } else { 689 // implicit flow control -- TODO 690 int num_ready = 0; 691 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 692 hci_connection_t * connection = (hci_connection_t *) it; 693 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 694 if (connection->sco_tx_ready == 0) continue; 695 num_ready++; 696 } 697 return num_ready; 698 } 699 } 700 #endif 701 702 // only used to send HCI Host Number Completed Packets 703 static int hci_can_send_comand_packet_transport(void){ 704 if (hci_stack->hci_packet_buffer_reserved) return 0; 705 706 // check for async hci transport implementations 707 if (hci_stack->hci_transport->can_send_packet_now){ 708 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 709 return 0; 710 } 711 } 712 return 1; 713 } 714 715 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 716 bool hci_can_send_command_packet_now(void){ 717 if (hci_can_send_comand_packet_transport() == 0) return false; 718 return hci_stack->num_cmd_packets > 0u; 719 } 720 721 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 722 // check for async hci transport implementations 723 if (!hci_stack->hci_transport->can_send_packet_now) return true; 724 return hci_stack->hci_transport->can_send_packet_now(packet_type); 725 } 726 727 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 728 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 729 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 730 } 731 732 bool hci_can_send_acl_le_packet_now(void){ 733 if (hci_stack->hci_packet_buffer_reserved) return false; 734 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 735 } 736 737 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 738 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 739 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 740 } 741 742 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 743 if (hci_stack->hci_packet_buffer_reserved) return false; 744 return hci_can_send_prepared_acl_packet_now(con_handle); 745 } 746 747 #ifdef ENABLE_CLASSIC 748 bool hci_can_send_acl_classic_packet_now(void){ 749 if (hci_stack->hci_packet_buffer_reserved) return false; 750 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 751 } 752 753 bool hci_can_send_prepared_sco_packet_now(void){ 754 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 755 if (hci_have_usb_transport()){ 756 return hci_stack->sco_can_send_now; 757 } else { 758 return hci_number_free_sco_slots() > 0; 759 } 760 } 761 762 bool hci_can_send_sco_packet_now(void){ 763 if (hci_stack->hci_packet_buffer_reserved) return false; 764 return hci_can_send_prepared_sco_packet_now(); 765 } 766 767 void hci_request_sco_can_send_now_event(void){ 768 hci_stack->sco_waiting_for_can_send_now = 1; 769 hci_notify_if_sco_can_send_now(); 770 } 771 #endif 772 773 // used for internal checks in l2cap.c 774 bool hci_is_packet_buffer_reserved(void){ 775 return hci_stack->hci_packet_buffer_reserved; 776 } 777 778 // reserves outgoing packet buffer. 779 // @return 1 if successful 780 bool hci_reserve_packet_buffer(void){ 781 if (hci_stack->hci_packet_buffer_reserved) { 782 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 783 return false; 784 } 785 hci_stack->hci_packet_buffer_reserved = true; 786 return true; 787 } 788 789 void hci_release_packet_buffer(void){ 790 hci_stack->hci_packet_buffer_reserved = false; 791 } 792 793 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 794 static int hci_transport_synchronous(void){ 795 return hci_stack->hci_transport->can_send_packet_now == NULL; 796 } 797 798 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 799 800 // 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); 801 802 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 803 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 804 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 805 max_acl_data_packet_length = hci_stack->le_data_packets_length; 806 } 807 808 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 809 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 810 max_acl_data_packet_length = connection->le_max_tx_octets; 811 } 812 #endif 813 814 log_debug("hci_send_acl_packet_fragments entered"); 815 816 uint8_t status = ERROR_CODE_SUCCESS; 817 // multiple packets could be send on a synchronous HCI transport 818 while (true){ 819 820 log_debug("hci_send_acl_packet_fragments loop entered"); 821 822 // get current data 823 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 824 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 825 bool more_fragments = false; 826 827 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 828 if (current_acl_data_packet_length > max_acl_data_packet_length){ 829 more_fragments = true; 830 current_acl_data_packet_length = max_acl_data_packet_length; 831 } 832 833 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 834 if (acl_header_pos > 0u){ 835 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 836 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 837 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 838 } 839 840 // update header len 841 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 842 843 // count packet 844 connection->num_packets_sent++; 845 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 846 847 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 848 if (more_fragments){ 849 // update start of next fragment to send 850 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 851 } else { 852 // done 853 hci_stack->acl_fragmentation_pos = 0; 854 hci_stack->acl_fragmentation_total_size = 0; 855 } 856 857 // send packet 858 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 859 const int size = current_acl_data_packet_length + 4; 860 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 861 hci_stack->acl_fragmentation_tx_active = 1; 862 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 863 if (err != 0){ 864 // no error from HCI Transport expected 865 status = ERROR_CODE_HARDWARE_FAILURE; 866 } 867 868 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 869 870 // done yet? 871 if (!more_fragments) break; 872 873 // can send more? 874 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 875 } 876 877 log_debug("hci_send_acl_packet_fragments loop over"); 878 879 // release buffer now for synchronous transport 880 if (hci_transport_synchronous()){ 881 hci_stack->acl_fragmentation_tx_active = 0; 882 hci_release_packet_buffer(); 883 hci_emit_transport_packet_sent(); 884 } 885 886 return status; 887 } 888 889 // pre: caller has reserved the packet buffer 890 uint8_t hci_send_acl_packet_buffer(int size){ 891 btstack_assert(hci_stack->hci_packet_buffer_reserved); 892 893 uint8_t * packet = hci_stack->hci_packet_buffer; 894 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 895 896 // check for free places on Bluetooth module 897 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 898 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 899 hci_release_packet_buffer(); 900 hci_emit_transport_packet_sent(); 901 return BTSTACK_ACL_BUFFERS_FULL; 902 } 903 904 hci_connection_t *connection = hci_connection_for_handle( con_handle); 905 if (!connection) { 906 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 907 hci_release_packet_buffer(); 908 hci_emit_transport_packet_sent(); 909 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 910 } 911 912 #ifdef ENABLE_CLASSIC 913 hci_connection_timestamp(connection); 914 #endif 915 916 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 917 918 // setup data 919 hci_stack->acl_fragmentation_total_size = size; 920 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 921 922 return hci_send_acl_packet_fragments(connection); 923 } 924 925 #ifdef ENABLE_CLASSIC 926 // pre: caller has reserved the packet buffer 927 uint8_t hci_send_sco_packet_buffer(int size){ 928 btstack_assert(hci_stack->hci_packet_buffer_reserved); 929 930 uint8_t * packet = hci_stack->hci_packet_buffer; 931 932 // skip checks in loopback mode 933 if (!hci_stack->loopback_mode){ 934 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 935 936 // check for free places on Bluetooth module 937 if (!hci_can_send_prepared_sco_packet_now()) { 938 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 939 hci_release_packet_buffer(); 940 hci_emit_transport_packet_sent(); 941 return BTSTACK_ACL_BUFFERS_FULL; 942 } 943 944 // track send packet in connection struct 945 hci_connection_t *connection = hci_connection_for_handle( con_handle); 946 if (!connection) { 947 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 948 hci_release_packet_buffer(); 949 hci_emit_transport_packet_sent(); 950 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 951 } 952 953 if (hci_have_usb_transport()){ 954 // token used 955 hci_stack->sco_can_send_now = false; 956 } else { 957 if (hci_stack->synchronous_flow_control_enabled){ 958 connection->num_packets_sent++; 959 } else { 960 connection->sco_tx_ready--; 961 } 962 } 963 } 964 965 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 966 967 #ifdef HAVE_SCO_TRANSPORT 968 hci_stack->sco_transport->send_packet(packet, size); 969 hci_release_packet_buffer(); 970 hci_emit_transport_packet_sent(); 971 972 return 0; 973 #else 974 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 975 if (hci_transport_synchronous()){ 976 hci_release_packet_buffer(); 977 hci_emit_transport_packet_sent(); 978 } 979 980 if (err != 0){ 981 return ERROR_CODE_HARDWARE_FAILURE; 982 } 983 return ERROR_CODE_SUCCESS; 984 #endif 985 } 986 #endif 987 988 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 989 static uint8_t hci_send_iso_packet_fragments(void){ 990 991 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 992 uint8_t status = ERROR_CODE_SUCCESS; 993 // multiple packets could be send on a synchronous HCI transport 994 while (true){ 995 996 // get current data 997 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 998 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 999 bool more_fragments = false; 1000 1001 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1002 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1003 more_fragments = true; 1004 current_iso_data_packet_length = max_iso_data_packet_length; 1005 } 1006 1007 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1008 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1009 uint8_t pb_flags; 1010 if (iso_header_pos == 0u){ 1011 // first fragment, keep TS field 1012 pb_flags = more_fragments ? 0x00 : 0x02; 1013 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1014 } else { 1015 // later fragment, drop TS field 1016 pb_flags = more_fragments ? 0x01 : 0x03; 1017 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1018 } 1019 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1020 1021 // update header len 1022 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1023 1024 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1025 if (more_fragments){ 1026 // update start of next fragment to send 1027 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1028 } else { 1029 // done 1030 hci_stack->iso_fragmentation_pos = 0; 1031 hci_stack->iso_fragmentation_total_size = 0; 1032 } 1033 1034 // send packet 1035 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1036 const int size = current_iso_data_packet_length + 4; 1037 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1038 hci_stack->iso_fragmentation_tx_active = true; 1039 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1040 if (err != 0){ 1041 // no error from HCI Transport expected 1042 status = ERROR_CODE_HARDWARE_FAILURE; 1043 } 1044 1045 // done yet? 1046 if (!more_fragments) break; 1047 1048 // can send more? 1049 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1050 } 1051 1052 // release buffer now for synchronous transport 1053 if (hci_transport_synchronous()){ 1054 hci_stack->iso_fragmentation_tx_active = false; 1055 hci_release_packet_buffer(); 1056 hci_emit_transport_packet_sent(); 1057 } 1058 1059 return status; 1060 } 1061 1062 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1063 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1064 1065 // setup data 1066 hci_stack->iso_fragmentation_total_size = size; 1067 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1068 1069 // TODO: check for space on controller 1070 // TODO: track outgoing packet sent 1071 1072 return hci_send_iso_packet_fragments(); 1073 } 1074 #endif 1075 1076 static void acl_handler(uint8_t *packet, uint16_t size){ 1077 1078 // get info 1079 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1080 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1081 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1082 uint16_t acl_length = READ_ACL_LENGTH(packet); 1083 1084 // ignore non-registered handle 1085 if (!conn){ 1086 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1087 return; 1088 } 1089 1090 // assert packet is complete 1091 if ((acl_length + 4u) != size){ 1092 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1093 return; 1094 } 1095 1096 #ifdef ENABLE_CLASSIC 1097 // update idle timestamp 1098 hci_connection_timestamp(conn); 1099 #endif 1100 1101 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1102 hci_stack->host_completed_packets = 1; 1103 conn->num_packets_completed++; 1104 #endif 1105 1106 // handle different packet types 1107 switch (acl_flags & 0x03u) { 1108 1109 case 0x01: // continuation fragment 1110 1111 // sanity checks 1112 if (conn->acl_recombination_pos == 0u) { 1113 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1114 return; 1115 } 1116 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1117 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1118 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1119 conn->acl_recombination_pos = 0; 1120 return; 1121 } 1122 1123 // append fragment payload (header already stored) 1124 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1125 &packet[4], acl_length); 1126 conn->acl_recombination_pos += acl_length; 1127 1128 // forward complete L2CAP packet if complete. 1129 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1130 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1131 // reset recombination buffer 1132 conn->acl_recombination_length = 0; 1133 conn->acl_recombination_pos = 0; 1134 } 1135 break; 1136 1137 case 0x02: { // first fragment 1138 1139 // sanity check 1140 if (conn->acl_recombination_pos) { 1141 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1142 conn->acl_recombination_pos = 0; 1143 } 1144 1145 // peek into L2CAP packet! 1146 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1147 1148 // compare fragment size to L2CAP packet size 1149 if (acl_length >= (l2cap_length + 4u)){ 1150 // forward fragment as L2CAP packet 1151 hci_emit_acl_packet(packet, acl_length + 4u); 1152 } else { 1153 1154 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1155 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1156 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1157 return; 1158 } 1159 1160 // store first fragment and tweak acl length for complete package 1161 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1162 packet, acl_length + 4u); 1163 conn->acl_recombination_pos = acl_length + 4u; 1164 conn->acl_recombination_length = l2cap_length; 1165 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1166 } 1167 break; 1168 1169 } 1170 default: 1171 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1172 return; 1173 } 1174 1175 // execute main loop 1176 hci_run(); 1177 } 1178 1179 static void hci_connection_stop_timer(hci_connection_t * conn){ 1180 btstack_run_loop_remove_timer(&conn->timeout); 1181 #ifdef ENABLE_CLASSIC 1182 btstack_run_loop_remove_timer(&conn->timeout_sco); 1183 #endif 1184 } 1185 1186 static void hci_shutdown_connection(hci_connection_t *conn){ 1187 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1188 1189 #ifdef ENABLE_CLASSIC 1190 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1191 bd_addr_type_t addr_type = conn->address_type; 1192 #endif 1193 #ifdef HAVE_SCO_TRANSPORT 1194 hci_con_handle_t con_handle = conn->con_handle; 1195 #endif 1196 #endif 1197 1198 hci_connection_stop_timer(conn); 1199 1200 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1201 btstack_memory_hci_connection_free( conn ); 1202 1203 // now it's gone 1204 hci_emit_nr_connections_changed(); 1205 1206 #ifdef ENABLE_CLASSIC 1207 #ifdef ENABLE_SCO_OVER_HCI 1208 // update SCO 1209 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1210 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1211 } 1212 #endif 1213 #ifdef HAVE_SCO_TRANSPORT 1214 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1215 hci_stack->sco_transport->close(con_handle); 1216 } 1217 #endif 1218 #endif 1219 } 1220 1221 #ifdef ENABLE_CLASSIC 1222 1223 static const uint16_t packet_type_sizes[] = { 1224 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1225 HCI_ACL_DH1_SIZE, 0, 0, 0, 1226 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1227 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1228 }; 1229 static const uint8_t packet_type_feature_requirement_bit[] = { 1230 0, // 3 slot packets 1231 1, // 5 slot packets 1232 25, // EDR 2 mpbs 1233 26, // EDR 3 mbps 1234 39, // 3 slot EDR packts 1235 40, // 5 slot EDR packet 1236 }; 1237 static const uint16_t packet_type_feature_packet_mask[] = { 1238 0x0f00, // 3 slot packets 1239 0xf000, // 5 slot packets 1240 0x1102, // EDR 2 mpbs 1241 0x2204, // EDR 3 mbps 1242 0x0300, // 3 slot EDR packts 1243 0x3000, // 5 slot EDR packet 1244 }; 1245 1246 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1247 // enable packet types based on size 1248 uint16_t packet_types = 0; 1249 unsigned int i; 1250 for (i=0;i<16;i++){ 1251 if (packet_type_sizes[i] == 0) continue; 1252 if (packet_type_sizes[i] <= buffer_size){ 1253 packet_types |= 1 << i; 1254 } 1255 } 1256 // disable packet types due to missing local supported features 1257 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1258 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1259 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1260 if (feature_set) continue; 1261 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1262 packet_types &= ~packet_type_feature_packet_mask[i]; 1263 } 1264 // flip bits for "may not be used" 1265 packet_types ^= 0x3306; 1266 return packet_types; 1267 } 1268 1269 uint16_t hci_usable_acl_packet_types(void){ 1270 return hci_stack->packet_types; 1271 } 1272 #endif 1273 1274 uint8_t* hci_get_outgoing_packet_buffer(void){ 1275 // hci packet buffer is >= acl data packet length 1276 return hci_stack->hci_packet_buffer; 1277 } 1278 1279 uint16_t hci_max_acl_data_packet_length(void){ 1280 return hci_stack->acl_data_packet_length; 1281 } 1282 1283 #ifdef ENABLE_CLASSIC 1284 bool hci_extended_sco_link_supported(void){ 1285 // No. 31, byte 3, bit 7 1286 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1287 } 1288 #endif 1289 1290 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1291 // No. 54, byte 6, bit 6 1292 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1293 } 1294 1295 #ifdef ENABLE_CLASSIC 1296 static int gap_ssp_supported(void){ 1297 // No. 51, byte 6, bit 3 1298 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1299 } 1300 #endif 1301 1302 static int hci_classic_supported(void){ 1303 #ifdef ENABLE_CLASSIC 1304 // No. 37, byte 4, bit 5, = No BR/EDR Support 1305 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1306 #else 1307 return 0; 1308 #endif 1309 } 1310 1311 static int hci_le_supported(void){ 1312 #ifdef ENABLE_BLE 1313 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1314 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1315 #else 1316 return 0; 1317 #endif 1318 } 1319 1320 static bool hci_command_supported(uint8_t command_index){ 1321 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1322 } 1323 1324 #ifdef ENABLE_BLE 1325 1326 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1327 static bool hci_extended_advertising_supported(void){ 1328 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1329 } 1330 #endif 1331 1332 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1333 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1334 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1335 } else { 1336 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1337 } 1338 } 1339 1340 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1341 *addr_type = hci_stack->le_own_addr_type; 1342 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1343 } 1344 1345 #ifdef ENABLE_LE_PERIPHERAL 1346 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1347 *addr_type = hci_stack->le_advertisements_own_addr_type; 1348 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1349 }; 1350 #endif 1351 1352 #ifdef ENABLE_LE_CENTRAL 1353 1354 /** 1355 * @brief Get own addr type and address used for LE connections (Central) 1356 */ 1357 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1358 *addr_type = hci_stack->le_connection_own_addr_type; 1359 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1360 } 1361 1362 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1363 1364 uint16_t offset = 3; 1365 uint8_t num_reports = packet[offset]; 1366 offset += 1; 1367 1368 uint16_t i; 1369 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1370 for (i=0; (i<num_reports) && (offset < size);i++){ 1371 // sanity checks on data_length: 1372 uint8_t data_length = packet[offset + 8]; 1373 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1374 if ((offset + 9u + data_length + 1u) > size) return; 1375 // setup event 1376 uint8_t event_size = 10u + data_length; 1377 uint16_t pos = 0; 1378 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1379 event[pos++] = event_size; 1380 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1381 offset += 8; 1382 pos += 8; 1383 event[pos++] = packet[offset + 1 + data_length]; // rssi 1384 event[pos++] = data_length; 1385 offset++; 1386 (void)memcpy(&event[pos], &packet[offset], data_length); 1387 pos += data_length; 1388 offset += data_length + 1u; // rssi 1389 hci_emit_event(event, pos, 1); 1390 } 1391 } 1392 1393 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1394 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1395 uint16_t offset = 3; 1396 uint8_t num_reports = packet[offset++]; 1397 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1398 uint8_t i; 1399 for (i=0; (i<num_reports) && (offset < size);i++){ 1400 // sanity checks on data_length: 1401 uint16_t data_length = packet[offset + 23]; 1402 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1403 if ((offset + 24u + data_length) > size) return; 1404 uint16_t event_type = little_endian_read_16(packet, offset); 1405 offset += 2; 1406 if ((event_type & 0x10) != 0) { 1407 // setup legacy event 1408 uint8_t legacy_event_type; 1409 switch (event_type){ 1410 case 0b0010011: 1411 // ADV_IND 1412 legacy_event_type = 0; 1413 break; 1414 case 0b0010101: 1415 // ADV_DIRECT_IND 1416 legacy_event_type = 1; 1417 break; 1418 case 0b0010010: 1419 // ADV_SCAN_IND 1420 legacy_event_type = 2; 1421 break; 1422 case 0b0010000: 1423 // ADV_NONCONN_IND 1424 legacy_event_type = 3; 1425 break; 1426 case 0b0011011: 1427 case 0b0011010: 1428 // SCAN_RSP 1429 legacy_event_type = 4; 1430 break; 1431 default: 1432 legacy_event_type = 0; 1433 break; 1434 } 1435 uint16_t pos = 0; 1436 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1437 event[pos++] = 10u + data_length; 1438 event[pos++] = legacy_event_type; 1439 // copy address type + address 1440 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1441 offset += 7; 1442 pos += 7; 1443 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1444 offset += 4; 1445 // copy rssi 1446 event[pos++] = packet[offset++]; 1447 // skip periodic advertising interval and direct address 1448 offset += 9; 1449 // copy data len + data; 1450 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1451 pos += 1 +data_length; 1452 offset += 1+ data_length; 1453 hci_emit_event(event, pos, 1); 1454 } else { 1455 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1456 uint8_t report_len = 24 + data_length; 1457 event[1] = report_len; 1458 little_endian_store_16(event, 2, event_type); 1459 memcpy(&event[4], &packet[offset], report_len); 1460 offset += report_len; 1461 hci_emit_event(event, 2 + report_len, 1); 1462 } 1463 } 1464 } 1465 #endif 1466 1467 #endif 1468 #endif 1469 1470 #ifdef ENABLE_BLE 1471 #ifdef ENABLE_LE_PERIPHERAL 1472 static void hci_update_advertisements_enabled_for_current_roles(void){ 1473 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1474 // get number of active le slave connections 1475 int num_slave_connections = 0; 1476 btstack_linked_list_iterator_t it; 1477 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1478 while (btstack_linked_list_iterator_has_next(&it)){ 1479 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1480 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1481 if (con->state != OPEN) continue; 1482 if (con->role != HCI_ROLE_SLAVE) continue; 1483 if (!hci_is_le_connection(con)) continue; 1484 num_slave_connections++; 1485 } 1486 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1487 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1488 } else { 1489 hci_stack->le_advertisements_enabled_for_current_roles = false; 1490 } 1491 } 1492 #endif 1493 #endif 1494 1495 #ifdef ENABLE_CLASSIC 1496 static void gap_run_set_local_name(void){ 1497 hci_reserve_packet_buffer(); 1498 uint8_t * packet = hci_stack->hci_packet_buffer; 1499 // construct HCI Command and send 1500 uint16_t opcode = hci_write_local_name.opcode; 1501 hci_stack->last_cmd_opcode = opcode; 1502 packet[0] = opcode & 0xff; 1503 packet[1] = opcode >> 8; 1504 packet[2] = DEVICE_NAME_LEN; 1505 memset(&packet[3], 0, DEVICE_NAME_LEN); 1506 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1507 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1508 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1509 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1510 // expand '00:00:00:00:00:00' in name with bd_addr 1511 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1512 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1513 } 1514 1515 static void gap_run_set_eir_data(void){ 1516 hci_reserve_packet_buffer(); 1517 uint8_t * packet = hci_stack->hci_packet_buffer; 1518 // construct HCI Command in-place and send 1519 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1520 hci_stack->last_cmd_opcode = opcode; 1521 uint16_t offset = 0; 1522 packet[offset++] = opcode & 0xff; 1523 packet[offset++] = opcode >> 8; 1524 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1525 packet[offset++] = 0; // FEC not required 1526 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1527 if (hci_stack->eir_data){ 1528 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1529 ad_context_t context; 1530 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1531 uint8_t data_type = ad_iterator_get_data_type(&context); 1532 uint8_t size = ad_iterator_get_data_len(&context); 1533 const uint8_t *data = ad_iterator_get_data(&context); 1534 // copy item 1535 packet[offset++] = size + 1; 1536 packet[offset++] = data_type; 1537 memcpy(&packet[offset], data, size); 1538 // update name item 1539 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1540 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1541 } 1542 offset += size; 1543 } 1544 } else { 1545 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1546 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1547 packet[offset++] = bytes_to_copy + 1; 1548 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1549 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1550 // expand '00:00:00:00:00:00' in name with bd_addr 1551 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1552 } 1553 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1554 } 1555 1556 static void hci_run_gap_tasks_classic(void){ 1557 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1558 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1559 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1560 return; 1561 } 1562 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1563 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1564 gap_run_set_local_name(); 1565 return; 1566 } 1567 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1568 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1569 gap_run_set_eir_data(); 1570 return; 1571 } 1572 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1573 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1574 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1575 return; 1576 } 1577 // write page scan activity 1578 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1579 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1580 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1581 return; 1582 } 1583 // write page scan type 1584 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1585 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1586 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1587 return; 1588 } 1589 // write page timeout 1590 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1591 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1592 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1593 return; 1594 } 1595 // send scan enable 1596 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1597 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1598 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1599 return; 1600 } 1601 // send write scan activity 1602 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1603 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1604 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1605 return; 1606 } 1607 } 1608 #endif 1609 1610 #ifndef HAVE_HOST_CONTROLLER_API 1611 1612 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1613 if (!hci_stack->config) return 0; 1614 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1615 // Limit baud rate for Broadcom chipsets to 3 mbps 1616 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1617 baud_rate = 3000000; 1618 } 1619 return baud_rate; 1620 } 1621 1622 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1623 UNUSED(ds); 1624 1625 switch (hci_stack->substate){ 1626 case HCI_INIT_W4_SEND_RESET: 1627 log_info("Resend HCI Reset"); 1628 hci_stack->substate = HCI_INIT_SEND_RESET; 1629 hci_stack->num_cmd_packets = 1; 1630 hci_run(); 1631 break; 1632 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1633 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1634 if (hci_stack->hci_transport->reset_link){ 1635 hci_stack->hci_transport->reset_link(); 1636 } 1637 1638 /* fall through */ 1639 1640 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1641 log_info("Resend HCI Reset - CSR Warm Boot"); 1642 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1643 hci_stack->num_cmd_packets = 1; 1644 hci_run(); 1645 break; 1646 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1647 if (hci_stack->hci_transport->set_baudrate){ 1648 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1649 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1650 hci_stack->hci_transport->set_baudrate(baud_rate); 1651 } 1652 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1653 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1654 if (hci_stack->hci_transport->reset_link){ 1655 log_info("Link Reset"); 1656 hci_stack->hci_transport->reset_link(); 1657 } 1658 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1659 hci_run(); 1660 } 1661 break; 1662 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1663 // otherwise continue 1664 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1665 hci_send_cmd(&hci_read_local_supported_commands); 1666 break; 1667 default: 1668 break; 1669 } 1670 } 1671 #endif 1672 1673 static void hci_initializing_next_state(void){ 1674 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1675 } 1676 1677 static void hci_init_done(void){ 1678 // done. tell the app 1679 log_info("hci_init_done -> HCI_STATE_WORKING"); 1680 hci_stack->state = HCI_STATE_WORKING; 1681 hci_emit_state(); 1682 } 1683 1684 // assumption: hci_can_send_command_packet_now() == true 1685 static void hci_initializing_run(void){ 1686 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1687 1688 if (!hci_can_send_command_packet_now()) return; 1689 1690 #ifndef HAVE_HOST_CONTROLLER_API 1691 bool need_baud_change = hci_stack->config 1692 && hci_stack->chipset 1693 && hci_stack->chipset->set_baudrate_command 1694 && hci_stack->hci_transport->set_baudrate 1695 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1696 #endif 1697 1698 switch (hci_stack->substate){ 1699 case HCI_INIT_SEND_RESET: 1700 hci_state_reset(); 1701 1702 #ifndef HAVE_HOST_CONTROLLER_API 1703 // prepare reset if command complete not received in 100ms 1704 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1705 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1706 btstack_run_loop_add_timer(&hci_stack->timeout); 1707 #endif 1708 // send command 1709 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1710 hci_send_cmd(&hci_reset); 1711 break; 1712 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1713 hci_send_cmd(&hci_read_local_version_information); 1714 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1715 break; 1716 1717 #ifndef HAVE_HOST_CONTROLLER_API 1718 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1719 hci_state_reset(); 1720 // prepare reset if command complete not received in 100ms 1721 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1722 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1723 btstack_run_loop_add_timer(&hci_stack->timeout); 1724 // send command 1725 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1726 hci_send_cmd(&hci_reset); 1727 break; 1728 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1729 hci_state_reset(); 1730 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1731 hci_send_cmd(&hci_reset); 1732 break; 1733 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1734 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1735 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1736 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1737 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1738 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1739 break; 1740 } 1741 case HCI_INIT_SET_BD_ADDR: 1742 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1743 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1744 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1745 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1746 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1747 break; 1748 case HCI_INIT_SEND_READ_LOCAL_NAME: 1749 #ifdef ENABLE_CLASSIC 1750 hci_send_cmd(&hci_read_local_name); 1751 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1752 break; 1753 #endif 1754 /* fall through */ 1755 1756 case HCI_INIT_SEND_BAUD_CHANGE: 1757 if (need_baud_change) { 1758 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1759 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1760 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1761 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1762 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1763 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1764 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1765 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1766 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1767 btstack_run_loop_add_timer(&hci_stack->timeout); 1768 } 1769 break; 1770 } 1771 1772 /* fall through */ 1773 1774 case HCI_INIT_CUSTOM_INIT: 1775 // Custom initialization 1776 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1777 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1778 bool send_cmd = false; 1779 switch (hci_stack->chipset_result){ 1780 case BTSTACK_CHIPSET_VALID_COMMAND: 1781 send_cmd = true; 1782 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1783 break; 1784 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1785 send_cmd = true; 1786 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1787 log_info("CSR Warm Boot"); 1788 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1789 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1790 btstack_run_loop_add_timer(&hci_stack->timeout); 1791 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1792 && hci_stack->config 1793 && hci_stack->chipset 1794 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1795 && hci_stack->hci_transport->set_baudrate 1796 && hci_transport_uart_get_main_baud_rate()){ 1797 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1798 } else { 1799 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1800 } 1801 break; 1802 default: 1803 break; 1804 } 1805 1806 if (send_cmd){ 1807 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1808 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1809 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1810 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1811 break; 1812 } 1813 log_info("Init script done"); 1814 1815 // Init script download on Broadcom chipsets causes: 1816 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1817 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1818 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1819 1820 // - baud rate to reset, restore UART baud rate if needed 1821 if (need_baud_change) { 1822 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1823 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1824 hci_stack->hci_transport->set_baudrate(baud_rate); 1825 } 1826 1827 uint16_t bcm_delay_ms = 300; 1828 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1829 // -> Work around: wait here. 1830 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1831 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1832 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1833 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1834 btstack_run_loop_add_timer(&hci_stack->timeout); 1835 break; 1836 } 1837 } 1838 #endif 1839 /* fall through */ 1840 1841 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1842 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1843 hci_send_cmd(&hci_read_local_supported_commands); 1844 break; 1845 case HCI_INIT_READ_BD_ADDR: 1846 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1847 hci_send_cmd(&hci_read_bd_addr); 1848 break; 1849 case HCI_INIT_READ_BUFFER_SIZE: 1850 // only read buffer size if supported 1851 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1852 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1853 hci_send_cmd(&hci_read_buffer_size); 1854 break; 1855 } 1856 1857 /* fall through */ 1858 1859 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1860 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1861 hci_send_cmd(&hci_read_local_supported_features); 1862 break; 1863 1864 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1865 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1866 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1867 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1868 break; 1869 case HCI_INIT_HOST_BUFFER_SIZE: 1870 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1871 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1872 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1873 break; 1874 #endif 1875 1876 case HCI_INIT_SET_EVENT_MASK: 1877 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1878 if (hci_le_supported()){ 1879 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1880 } else { 1881 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1882 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1883 } 1884 break; 1885 1886 case HCI_INIT_SET_EVENT_MASK_2: 1887 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2)){ 1888 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1889 // Encryption Change Event v2 - bit 25 1890 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1891 break; 1892 } 1893 1894 #ifdef ENABLE_CLASSIC 1895 /* fall through */ 1896 1897 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1898 if (hci_classic_supported() && gap_ssp_supported()){ 1899 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1900 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1901 break; 1902 } 1903 1904 /* fall through */ 1905 1906 case HCI_INIT_WRITE_INQUIRY_MODE: 1907 if (hci_classic_supported()){ 1908 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1909 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1910 break; 1911 } 1912 1913 /* fall through */ 1914 1915 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1916 // skip write secure connections host support if not supported or disabled 1917 if (hci_classic_supported() && hci_stack->secure_connections_enable 1918 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1919 hci_stack->secure_connections_active = true; 1920 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1921 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1922 break; 1923 } 1924 1925 /* fall through */ 1926 1927 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 1928 // skip set min encryption key size 1929 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 1930 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 1931 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 1932 break; 1933 } 1934 1935 #ifdef ENABLE_SCO_OVER_HCI 1936 /* fall through */ 1937 1938 // only sent if ENABLE_SCO_OVER_HCI is defined 1939 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1940 // skip write synchronous flow control if not supported 1941 if (hci_classic_supported() 1942 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 1943 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1944 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1945 break; 1946 } 1947 /* fall through */ 1948 1949 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1950 // skip write default erroneous data reporting if not supported 1951 if (hci_classic_supported() 1952 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 1953 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1954 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1955 break; 1956 } 1957 #endif 1958 1959 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 1960 /* fall through */ 1961 1962 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1963 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1964 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1965 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1966 #ifdef ENABLE_SCO_OVER_HCI 1967 log_info("BCM: Route SCO data via HCI transport"); 1968 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1969 #endif 1970 #ifdef ENABLE_SCO_OVER_PCM 1971 log_info("BCM: Route SCO data via PCM interface"); 1972 #ifdef ENABLE_BCM_PCM_WBS 1973 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 1974 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1975 #else 1976 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1977 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1978 #endif 1979 #endif 1980 break; 1981 } 1982 #endif 1983 1984 #ifdef ENABLE_SCO_OVER_PCM 1985 /* fall through */ 1986 1987 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 1988 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1989 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 1990 log_info("BCM: Config PCM interface for I2S"); 1991 #ifdef ENABLE_BCM_PCM_WBS 1992 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 1993 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 1994 #else 1995 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1996 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 1997 #endif 1998 break; 1999 } 2000 #endif 2001 #endif 2002 2003 #ifdef ENABLE_BLE 2004 /* fall through */ 2005 2006 // LE INIT 2007 case HCI_INIT_LE_READ_BUFFER_SIZE: 2008 if (hci_le_supported()){ 2009 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2010 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2011 hci_send_cmd(&hci_le_read_buffer_size_v2); 2012 } else { 2013 hci_send_cmd(&hci_le_read_buffer_size); 2014 } 2015 break; 2016 } 2017 2018 /* fall through */ 2019 2020 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2021 // skip write le host if not supported (e.g. on LE only EM9301) 2022 if (hci_le_supported() 2023 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2024 // LE Supported Host = 1, Simultaneous Host = 0 2025 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2026 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2027 break; 2028 } 2029 2030 /* fall through */ 2031 2032 case HCI_INIT_LE_SET_EVENT_MASK: 2033 if (hci_le_supported()){ 2034 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2035 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2036 break; 2037 } 2038 #endif 2039 2040 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2041 /* fall through */ 2042 2043 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2044 if (hci_le_supported() 2045 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2046 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2047 hci_send_cmd(&hci_le_read_maximum_data_length); 2048 break; 2049 } 2050 2051 /* fall through */ 2052 2053 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2054 if (hci_le_supported() 2055 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2056 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2057 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2058 break; 2059 } 2060 #endif 2061 2062 #ifdef ENABLE_LE_CENTRAL 2063 /* fall through */ 2064 2065 case HCI_INIT_READ_WHITE_LIST_SIZE: 2066 if (hci_le_supported()){ 2067 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2068 hci_send_cmd(&hci_le_read_white_list_size); 2069 break; 2070 } 2071 2072 #endif 2073 2074 #ifdef ENABLE_LE_PERIPHERAL 2075 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2076 /* fall through */ 2077 2078 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2079 if (hci_extended_advertising_supported()){ 2080 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2081 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2082 break; 2083 } 2084 #endif 2085 #endif 2086 /* fall through */ 2087 2088 case HCI_INIT_DONE: 2089 hci_stack->substate = HCI_INIT_DONE; 2090 // main init sequence complete 2091 #ifdef ENABLE_CLASSIC 2092 // check if initial Classic GAP Tasks are completed 2093 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2094 hci_run_gap_tasks_classic(); 2095 break; 2096 } 2097 #endif 2098 #ifdef ENABLE_BLE 2099 #ifdef ENABLE_LE_CENTRAL 2100 // check if initial LE GAP Tasks are completed 2101 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2102 hci_run_general_gap_le(); 2103 break; 2104 } 2105 #endif 2106 #endif 2107 hci_init_done(); 2108 break; 2109 2110 default: 2111 return; 2112 } 2113 } 2114 2115 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2116 bool command_completed = false; 2117 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2118 uint16_t opcode = little_endian_read_16(packet,3); 2119 if (opcode == hci_stack->last_cmd_opcode){ 2120 command_completed = true; 2121 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2122 } else { 2123 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2124 } 2125 } 2126 2127 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2128 uint8_t status = packet[2]; 2129 uint16_t opcode = little_endian_read_16(packet,4); 2130 if (opcode == hci_stack->last_cmd_opcode){ 2131 if (status){ 2132 command_completed = true; 2133 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2134 } else { 2135 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2136 } 2137 } else { 2138 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2139 } 2140 } 2141 #ifndef HAVE_HOST_CONTROLLER_API 2142 // Vendor == CSR 2143 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2144 // TODO: track actual command 2145 command_completed = true; 2146 } 2147 2148 // Vendor == Toshiba 2149 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2150 // TODO: track actual command 2151 command_completed = true; 2152 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2153 hci_stack->num_cmd_packets = 1; 2154 } 2155 #endif 2156 2157 return command_completed; 2158 } 2159 2160 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2161 2162 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2163 2164 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2165 2166 #ifndef HAVE_HOST_CONTROLLER_API 2167 2168 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2169 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2170 // 2171 // HCI Reset 2172 // Timeout 100 ms 2173 // HCI Reset 2174 // Command Complete Reset 2175 // HCI Read Local Version Information 2176 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2177 // hang... 2178 // 2179 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2180 if (!command_completed 2181 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2182 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2183 2184 uint16_t opcode = little_endian_read_16(packet,3); 2185 if (opcode == hci_reset.opcode){ 2186 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2187 return; 2188 } 2189 } 2190 2191 // CSR & H5 2192 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2193 if (!command_completed 2194 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2195 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2196 2197 uint16_t opcode = little_endian_read_16(packet,3); 2198 if (opcode == hci_reset.opcode){ 2199 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2200 return; 2201 } 2202 } 2203 2204 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2205 // fix: Correct substate and behave as command below 2206 if (command_completed){ 2207 switch (hci_stack->substate){ 2208 case HCI_INIT_SEND_RESET: 2209 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2210 break; 2211 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2212 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2213 break; 2214 default: 2215 break; 2216 } 2217 } 2218 2219 #endif 2220 2221 if (!command_completed) return; 2222 2223 bool need_baud_change = false; 2224 bool need_addr_change = false; 2225 2226 #ifndef HAVE_HOST_CONTROLLER_API 2227 need_baud_change = hci_stack->config 2228 && hci_stack->chipset 2229 && hci_stack->chipset->set_baudrate_command 2230 && hci_stack->hci_transport->set_baudrate 2231 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2232 2233 need_addr_change = hci_stack->custom_bd_addr_set 2234 && hci_stack->chipset 2235 && hci_stack->chipset->set_bd_addr_command; 2236 #endif 2237 2238 switch(hci_stack->substate){ 2239 2240 #ifndef HAVE_HOST_CONTROLLER_API 2241 case HCI_INIT_SEND_RESET: 2242 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2243 // fix: just correct substate and behave as command below 2244 2245 /* fall through */ 2246 #endif 2247 2248 case HCI_INIT_W4_SEND_RESET: 2249 btstack_run_loop_remove_timer(&hci_stack->timeout); 2250 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2251 return; 2252 2253 #ifndef HAVE_HOST_CONTROLLER_API 2254 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2255 // for STLC2500D, baud rate change already happened. 2256 // for others, baud rate gets changed now 2257 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2258 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2259 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2260 hci_stack->hci_transport->set_baudrate(baud_rate); 2261 } 2262 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2263 return; 2264 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2265 btstack_run_loop_remove_timer(&hci_stack->timeout); 2266 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2267 return; 2268 case HCI_INIT_W4_CUSTOM_INIT: 2269 // repeat custom init 2270 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2271 return; 2272 #endif 2273 2274 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2275 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2276 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2277 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2278 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2279 return; 2280 } 2281 if (need_addr_change){ 2282 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2283 return; 2284 } 2285 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2286 return; 2287 #ifndef HAVE_HOST_CONTROLLER_API 2288 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2289 if (need_baud_change){ 2290 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2291 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2292 hci_stack->hci_transport->set_baudrate(baud_rate); 2293 } 2294 if (need_addr_change){ 2295 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2296 return; 2297 } 2298 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2299 return; 2300 case HCI_INIT_W4_SET_BD_ADDR: 2301 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2302 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2303 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2304 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2305 return; 2306 } 2307 // skipping st warm boot 2308 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2309 return; 2310 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2311 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2312 return; 2313 #endif 2314 2315 case HCI_INIT_DONE: 2316 // set state if we came here by fall through 2317 hci_stack->substate = HCI_INIT_DONE; 2318 return; 2319 2320 default: 2321 break; 2322 } 2323 hci_initializing_next_state(); 2324 } 2325 2326 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2327 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2328 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2329 // check if we have been aware of the HCI connection 2330 switch (conn->state){ 2331 case SENT_CREATE_CONNECTION: 2332 case RECEIVED_CONNECTION_REQUEST: 2333 break; 2334 default: 2335 return; 2336 } 2337 2338 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2339 bd_addr_t bd_address; 2340 (void)memcpy(&bd_address, conn->address, 6); 2341 2342 #ifdef ENABLE_CLASSIC 2343 // cache needed data 2344 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2345 #endif 2346 2347 // connection failed, remove entry 2348 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2349 btstack_memory_hci_connection_free( conn ); 2350 2351 #ifdef ENABLE_CLASSIC 2352 // notify client if dedicated bonding 2353 if (notify_dedicated_bonding_failed){ 2354 log_info("hci notify_dedicated_bonding_failed"); 2355 hci_emit_dedicated_bonding_result(bd_address, status); 2356 } 2357 2358 // if authentication error, also delete link key 2359 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2360 gap_drop_link_key_for_bd_addr(bd_address); 2361 } 2362 #else 2363 UNUSED(status); 2364 #endif 2365 } 2366 2367 #ifdef ENABLE_CLASSIC 2368 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2369 // SSP Controller 2370 if (features[6] & (1 << 3)){ 2371 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2372 } 2373 // eSCO 2374 if (features[3] & (1<<7)){ 2375 conn->remote_supported_features[0] |= 1; 2376 } 2377 // Extended features 2378 if (features[7] & (1<<7)){ 2379 conn->remote_supported_features[0] |= 2; 2380 } 2381 } 2382 2383 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2384 // SSP Host 2385 if (features[0] & (1 << 0)){ 2386 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2387 } 2388 // SC Host 2389 if (features[0] & (1 << 3)){ 2390 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2391 } 2392 } 2393 2394 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2395 // SC Controller 2396 if (features[1] & (1 << 0)){ 2397 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2398 } 2399 } 2400 2401 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2402 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2403 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2404 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2405 if (conn->bonding_flags & BONDING_DEDICATED){ 2406 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2407 } 2408 } 2409 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2410 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2411 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2412 } 2413 2414 #endif 2415 2416 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2417 // handle BT initialization 2418 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2419 hci_initializing_event_handler(packet, size); 2420 } 2421 2422 // help with BT sleep 2423 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2424 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2425 && (HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_scan_enable))) { 2426 hci_initializing_next_state(); 2427 } 2428 } 2429 2430 #ifdef ENABLE_CLASSIC 2431 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2432 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2433 conn->encryption_key_size = encryption_key_size; 2434 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2435 2436 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2437 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2438 conn->bonding_flags &= ~BONDING_DEDICATED; 2439 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2440 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2441 return; 2442 } 2443 2444 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2445 conn->requested_security_level = LEVEL_0; 2446 hci_emit_security_level(conn->con_handle, security_level); 2447 return; 2448 } 2449 2450 // Request remote features if not already done 2451 hci_trigger_remote_features_for_connection(conn); 2452 2453 // Request Authentication if not already done 2454 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2455 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2456 } 2457 #endif 2458 2459 static void hci_store_local_supported_commands(const uint8_t * packet){ 2460 // create mapping table 2461 #define X(name, offset, bit) { offset, bit }, 2462 static struct { 2463 uint8_t byte_offset; 2464 uint8_t bit_position; 2465 } supported_hci_commands_map [] = { 2466 SUPPORTED_HCI_COMMANDS 2467 }; 2468 #undef X 2469 2470 // create names for debug purposes 2471 #ifdef ENABLE_LOG_DEBUG 2472 #define X(name, offset, bit) #name, 2473 static const char * command_names[] = { 2474 SUPPORTED_HCI_COMMANDS 2475 }; 2476 #undef X 2477 #endif 2478 2479 hci_stack->local_supported_commands = 0; 2480 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2481 uint16_t i; 2482 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2483 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2484 #ifdef ENABLE_LOG_DEBUG 2485 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); 2486 #else 2487 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2488 #endif 2489 hci_stack->local_supported_commands |= (1LU << i); 2490 } 2491 } 2492 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2493 } 2494 2495 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2496 UNUSED(size); 2497 2498 uint16_t manufacturer; 2499 #ifdef ENABLE_CLASSIC 2500 hci_con_handle_t handle; 2501 hci_connection_t * conn; 2502 uint8_t status; 2503 #endif 2504 // get num cmd packets - limit to 1 to reduce complexity 2505 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2506 2507 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2508 switch (opcode){ 2509 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2510 if (packet[5]) break; 2511 // terminate, name 248 chars 2512 packet[6+248] = 0; 2513 log_info("local name: %s", &packet[6]); 2514 break; 2515 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2516 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2517 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2518 uint16_t acl_len = little_endian_read_16(packet, 6); 2519 uint16_t sco_len = packet[8]; 2520 2521 // determine usable ACL/SCO payload size 2522 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2523 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2524 2525 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2526 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2527 2528 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2529 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2530 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2531 } 2532 break; 2533 case HCI_OPCODE_HCI_READ_RSSI: 2534 if (packet[5] == ERROR_CODE_SUCCESS){ 2535 uint8_t event[5]; 2536 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2537 event[1] = 3; 2538 (void)memcpy(&event[2], &packet[6], 3); 2539 hci_emit_event(event, sizeof(event), 1); 2540 } 2541 break; 2542 #ifdef ENABLE_BLE 2543 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2544 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2545 hci_stack->le_iso_packets_total_num = packet[11]; 2546 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2547 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2548 2549 /* fall through */ 2550 2551 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2552 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2553 hci_stack->le_acl_packets_total_num = packet[8]; 2554 // determine usable ACL payload size 2555 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2556 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2557 } 2558 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); 2559 break; 2560 #endif 2561 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2562 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2563 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2564 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2565 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); 2566 break; 2567 #endif 2568 #ifdef ENABLE_LE_CENTRAL 2569 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2570 hci_stack->le_whitelist_capacity = packet[6]; 2571 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2572 break; 2573 #endif 2574 #ifdef ENABLE_LE_PERIPHERAL 2575 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2576 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2577 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2578 break; 2579 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2580 if (hci_stack->le_advertising_set_in_current_command != 0) { 2581 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2582 hci_stack->le_advertising_set_in_current_command = 0; 2583 if (advertising_set == NULL) break; 2584 uint8_t adv_status = packet[6]; 2585 uint8_t tx_power = packet[7]; 2586 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 }; 2587 if (adv_status == 0){ 2588 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2589 } 2590 hci_emit_event(event, sizeof(event), 1); 2591 } 2592 break; 2593 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2594 if (hci_stack->le_advertising_set_in_current_command != 0) { 2595 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2596 hci_stack->le_advertising_set_in_current_command = 0; 2597 if (advertising_set == NULL) break; 2598 uint8_t adv_status = packet[5]; 2599 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2600 if (adv_status == 0){ 2601 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2602 } 2603 hci_emit_event(event, sizeof(event), 1); 2604 } 2605 break; 2606 #endif 2607 #endif 2608 case HCI_OPCODE_HCI_READ_BD_ADDR: 2609 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2610 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)); 2611 #ifdef ENABLE_CLASSIC 2612 if (hci_stack->link_key_db){ 2613 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2614 } 2615 #endif 2616 break; 2617 #ifdef ENABLE_CLASSIC 2618 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2619 hci_emit_discoverable_enabled(hci_stack->discoverable); 2620 break; 2621 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2622 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2623 if (status == ERROR_CODE_SUCCESS) { 2624 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2625 } else { 2626 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2627 } 2628 break; 2629 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2630 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2631 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2632 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2633 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2634 hci_emit_event(event, sizeof(event), 1); 2635 } 2636 break; 2637 #endif 2638 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2639 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2640 2641 #ifdef ENABLE_CLASSIC 2642 // determine usable ACL packet types based on host buffer size and supported features 2643 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2644 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2645 #endif 2646 // Classic/LE 2647 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2648 break; 2649 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2650 manufacturer = little_endian_read_16(packet, 10); 2651 // map Cypress to Broadcom 2652 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2653 log_info("Treat Cypress as Broadcom"); 2654 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2655 little_endian_store_16(packet, 10, manufacturer); 2656 } 2657 hci_stack->manufacturer = manufacturer; 2658 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2659 break; 2660 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2661 hci_store_local_supported_commands(packet); 2662 break; 2663 #ifdef ENABLE_CLASSIC 2664 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2665 if (packet[5]) return; 2666 hci_stack->synchronous_flow_control_enabled = 1; 2667 break; 2668 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2669 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2670 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2671 conn = hci_connection_for_handle(handle); 2672 if (conn != NULL) { 2673 uint8_t key_size = 0; 2674 if (status == 0){ 2675 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2676 log_info("Handle %04x key Size: %u", handle, key_size); 2677 } else { 2678 key_size = 1; 2679 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2680 } 2681 hci_handle_read_encryption_key_size_complete(conn, key_size); 2682 } 2683 break; 2684 // assert pairing complete event is emitted. 2685 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2686 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2687 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2688 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2689 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2690 // lookup connection by gap pairing addr 2691 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2692 if (conn == NULL) break; 2693 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2694 break; 2695 2696 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2697 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2698 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2699 uint8_t event[67]; 2700 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2701 event[1] = 65; 2702 (void)memset(&event[2], 0, 65); 2703 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2704 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2705 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2706 event[2] = 3; 2707 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2708 } else { 2709 event[2] = 1; 2710 } 2711 } 2712 hci_emit_event(event, sizeof(event), 0); 2713 break; 2714 } 2715 2716 // note: only needed if user does not provide OOB data 2717 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2718 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2719 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2720 if (conn == NULL) break; 2721 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2722 break; 2723 #endif 2724 #endif 2725 #ifdef ENABLE_BLE 2726 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2727 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2728 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2729 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2730 if (status != ERROR_CODE_SUCCESS){ 2731 hci_iso_stream_requested_finalize(); 2732 } 2733 break; 2734 #endif 2735 #endif 2736 default: 2737 break; 2738 } 2739 } 2740 2741 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 2742 UNUSED(size); 2743 2744 bd_addr_type_t addr_type; 2745 hci_connection_t * conn; 2746 2747 // get num cmd packets - limit to 1 to reduce complexity 2748 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2749 2750 // check command status to detected failed outgoing connections 2751 bool create_connection_cmd = false; 2752 #ifdef ENABLE_CLASSIC 2753 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_create_connection)){ 2754 create_connection_cmd = true; 2755 } 2756 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_accept_synchronous_connection)){ 2757 create_connection_cmd = true; 2758 } 2759 #endif 2760 #ifdef ENABLE_LE_CENTRAL 2761 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_create_connection)){ 2762 create_connection_cmd = true; 2763 } 2764 #endif 2765 if (create_connection_cmd) { 2766 uint8_t status = hci_event_command_status_get_status(packet); 2767 addr_type = hci_stack->outgoing_addr_type; 2768 conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2769 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); 2770 2771 // reset outgoing address info 2772 memset(hci_stack->outgoing_addr, 0, 6); 2773 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2774 2775 // on error 2776 if (status != ERROR_CODE_SUCCESS){ 2777 #ifdef ENABLE_LE_CENTRAL 2778 if (hci_is_le_connection_type(addr_type)){ 2779 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2780 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2781 } 2782 #endif 2783 // error => outgoing connection failed 2784 if (conn != NULL){ 2785 hci_handle_connection_failed(conn, status); 2786 } 2787 } 2788 } 2789 2790 #ifdef ENABLE_CLASSIC 2791 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_inquiry)){ 2792 uint8_t status = hci_event_command_status_get_status(packet); 2793 log_info("command status (inquiry), status %x", status); 2794 if (status == ERROR_CODE_SUCCESS) { 2795 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2796 } else { 2797 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2798 } 2799 } 2800 #endif /* ENABLE_CLASSIC */ 2801 #ifdef ENABLE_BLE 2802 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2803 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_create_cis) || HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_accept_cis_request)){ 2804 uint8_t status = hci_event_command_status_get_status(packet); 2805 if (status == ERROR_CODE_SUCCESS){ 2806 hci_iso_stream_requested_confirm(); 2807 } else { 2808 hci_iso_stream_requested_finalize(); 2809 } 2810 } 2811 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 2812 #endif /* ENABLE_BLE */ 2813 } 2814 2815 #ifdef ENABLE_BLE 2816 static void event_handle_le_connection_complete(const uint8_t * packet){ 2817 bd_addr_t addr; 2818 bd_addr_type_t addr_type; 2819 hci_connection_t * conn; 2820 2821 // Connection management 2822 reverse_bd_addr(&packet[8], addr); 2823 addr_type = (bd_addr_type_t)packet[7]; 2824 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2825 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2826 2827 #ifdef ENABLE_LE_CENTRAL 2828 // handle error: error is reported only to the initiator -> outgoing connection 2829 if (packet[3]){ 2830 2831 // handle cancelled outgoing connection 2832 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2833 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2834 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2835 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2836 // reset state 2837 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2838 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2839 // get outgoing connection conn struct for direct connect 2840 conn = gap_get_outgoing_connection(); 2841 } 2842 2843 // outgoing le connection establishment is done 2844 if (conn){ 2845 // remove entry 2846 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2847 btstack_memory_hci_connection_free( conn ); 2848 } 2849 return; 2850 } 2851 #endif 2852 2853 // on success, both hosts receive connection complete event 2854 if (packet[6] == HCI_ROLE_MASTER){ 2855 #ifdef ENABLE_LE_CENTRAL 2856 // if we're master on an le connection, it was an outgoing connection and we're done with it 2857 // note: no hci_connection_t object exists yet for connect with whitelist 2858 if (hci_is_le_connection_type(addr_type)){ 2859 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2860 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2861 } 2862 #endif 2863 } else { 2864 #ifdef ENABLE_LE_PERIPHERAL 2865 // if we're slave, it was an incoming connection, advertisements have stopped 2866 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 2867 #endif 2868 } 2869 2870 // LE connections are auto-accepted, so just create a connection if there isn't one already 2871 if (!conn){ 2872 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2873 } 2874 2875 // no memory, sorry. 2876 if (!conn){ 2877 return; 2878 } 2879 2880 conn->state = OPEN; 2881 conn->role = packet[6]; 2882 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2883 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2884 2885 #ifdef ENABLE_LE_PERIPHERAL 2886 if (packet[6] == HCI_ROLE_SLAVE){ 2887 hci_update_advertisements_enabled_for_current_roles(); 2888 } 2889 #endif 2890 2891 // init unenhanced att bearer mtu 2892 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2893 conn->att_connection.mtu_exchanged = false; 2894 2895 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2896 2897 // restart timer 2898 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2899 // btstack_run_loop_add_timer(&conn->timeout); 2900 2901 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2902 2903 hci_emit_nr_connections_changed(); 2904 } 2905 #endif 2906 2907 #ifdef ENABLE_CLASSIC 2908 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){ 2909 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 2910 // LEVEL_4 is tested by l2cap 2911 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 2912 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 2913 if (level >= LEVEL_3){ 2914 // MITM not possible without keyboard or display 2915 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2916 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2917 2918 // MITM possible if one side has keyboard and the other has keyboard or display 2919 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2920 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 2921 2922 // MITM not possible if one side has only display and other side has no keyboard 2923 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2924 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 2925 } 2926 // LEVEL 2 requires SSP, which is a given 2927 return true; 2928 } 2929 2930 static bool btstack_is_null(uint8_t * data, uint16_t size){ 2931 uint16_t i; 2932 for (i=0; i < size ; i++){ 2933 if (data[i] != 0) { 2934 return false; 2935 } 2936 } 2937 return true; 2938 } 2939 2940 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 2941 // get requested security level 2942 gap_security_level_t requested_security_level = conn->requested_security_level; 2943 if (hci_stack->gap_secure_connections_only_mode){ 2944 requested_security_level = LEVEL_4; 2945 } 2946 2947 // assess security: LEVEL 4 requires SC 2948 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 2949 if ((requested_security_level == LEVEL_4) && 2950 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 2951 !hci_remote_sc_enabled(conn)){ 2952 log_info("Level 4 required, but SC not supported -> abort"); 2953 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2954 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2955 return; 2956 } 2957 2958 // assess security based on io capabilities 2959 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 2960 // responder: fully validate io caps of both sides as well as OOB data 2961 bool security_possible = false; 2962 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 2963 2964 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2965 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 2966 // so we merge the OOB data availability 2967 uint8_t have_oob_data = conn->io_cap_response_oob_data; 2968 if (conn->classic_oob_c_192 != NULL){ 2969 have_oob_data |= 1; 2970 } 2971 if (conn->classic_oob_c_256 != NULL){ 2972 have_oob_data |= 2; 2973 } 2974 // for up to Level 3, either P-192 as well as P-256 will do 2975 // 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 2976 // if remote does not SC, we should not receive P-256 data either 2977 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 2978 security_possible = true; 2979 } 2980 // for Level 4, P-256 is needed 2981 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 2982 security_possible = true; 2983 } 2984 #endif 2985 2986 if (security_possible == false){ 2987 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 2988 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2989 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2990 return; 2991 } 2992 } else { 2993 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 2994 #ifndef ENABLE_CLASSIC_PAIRING_OOB 2995 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 2996 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 2997 log_info("Level 3+ required, but no input/output -> abort"); 2998 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 2999 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3000 return; 3001 } 3002 #endif 3003 #endif 3004 } 3005 3006 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3007 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3008 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3009 } else { 3010 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3011 } 3012 #endif 3013 } 3014 3015 #endif 3016 3017 static void event_handler(uint8_t *packet, uint16_t size){ 3018 3019 uint16_t event_length = packet[1]; 3020 3021 // assert packet is complete 3022 if (size != (event_length + 2u)){ 3023 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3024 return; 3025 } 3026 3027 bd_addr_type_t addr_type; 3028 hci_con_handle_t handle; 3029 hci_connection_t * conn; 3030 int i; 3031 3032 #ifdef ENABLE_CLASSIC 3033 hci_link_type_t link_type; 3034 bd_addr_t addr; 3035 #endif 3036 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3037 hci_iso_stream_t * iso_stream; 3038 #endif 3039 3040 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3041 3042 switch (hci_event_packet_get_type(packet)) { 3043 3044 case HCI_EVENT_COMMAND_COMPLETE: 3045 handle_command_complete_event(packet, size); 3046 break; 3047 3048 case HCI_EVENT_COMMAND_STATUS: 3049 handle_command_status_event(packet, size); 3050 break; 3051 3052 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3053 if (size < 3) return; 3054 uint16_t num_handles = packet[2]; 3055 if (size != (3u + num_handles * 4u)) return; 3056 uint16_t offset = 3; 3057 for (i=0; i<num_handles;i++){ 3058 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3059 offset += 2u; 3060 uint16_t num_packets = little_endian_read_16(packet, offset); 3061 offset += 2u; 3062 3063 conn = hci_connection_for_handle(handle); 3064 if (!conn){ 3065 log_error("hci_number_completed_packet lists unused con handle %u", handle); 3066 continue; 3067 } 3068 3069 if (conn->num_packets_sent >= num_packets){ 3070 conn->num_packets_sent -= num_packets; 3071 } else { 3072 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3073 conn->num_packets_sent = 0; 3074 } 3075 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3076 3077 #ifdef ENABLE_CLASSIC 3078 // For SCO, we do the can_send_now_check here 3079 hci_notify_if_sco_can_send_now(); 3080 #endif 3081 } 3082 break; 3083 } 3084 3085 #ifdef ENABLE_CLASSIC 3086 case HCI_EVENT_FLUSH_OCCURRED: 3087 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3088 handle = hci_event_flush_occurred_get_handle(packet); 3089 conn = hci_connection_for_handle(handle); 3090 if (conn) { 3091 log_info("Flush occurred, disconnect 0x%04x", handle); 3092 conn->state = SEND_DISCONNECT; 3093 } 3094 break; 3095 3096 case HCI_EVENT_INQUIRY_COMPLETE: 3097 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3098 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3099 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3100 hci_emit_event(event, sizeof(event), 1); 3101 } 3102 break; 3103 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3104 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3105 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3106 } 3107 break; 3108 case HCI_EVENT_CONNECTION_REQUEST: 3109 reverse_bd_addr(&packet[2], addr); 3110 link_type = (hci_link_type_t) packet[11]; 3111 3112 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3113 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3114 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3115 bd_addr_copy(hci_stack->decline_addr, addr); 3116 break; 3117 } 3118 3119 if (hci_stack->gap_classic_accept_callback != NULL){ 3120 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3121 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3122 bd_addr_copy(hci_stack->decline_addr, addr); 3123 break; 3124 } 3125 } 3126 3127 // TODO: eval COD 8-10 3128 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3129 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3130 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3131 if (!conn) { 3132 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3133 } 3134 if (!conn) { 3135 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3136 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3137 bd_addr_copy(hci_stack->decline_addr, addr); 3138 hci_run(); 3139 // avoid event to higher layer 3140 return; 3141 } 3142 conn->role = HCI_ROLE_SLAVE; 3143 conn->state = RECEIVED_CONNECTION_REQUEST; 3144 // store info about eSCO 3145 if (link_type == HCI_LINK_TYPE_ESCO){ 3146 conn->remote_supported_features[0] |= 1; 3147 } 3148 hci_run(); 3149 break; 3150 3151 case HCI_EVENT_CONNECTION_COMPLETE: 3152 // Connection management 3153 reverse_bd_addr(&packet[5], addr); 3154 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3155 addr_type = BD_ADDR_TYPE_ACL; 3156 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3157 if (conn) { 3158 if (!packet[2]){ 3159 conn->state = OPEN; 3160 conn->con_handle = little_endian_read_16(packet, 3); 3161 3162 // trigger write supervision timeout if we're master 3163 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3164 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3165 } 3166 3167 // trigger write automatic flush timeout 3168 if (hci_stack->automatic_flush_timeout != 0){ 3169 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3170 } 3171 3172 // restart timer 3173 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3174 btstack_run_loop_add_timer(&conn->timeout); 3175 3176 // trigger remote features for dedicated bonding 3177 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3178 hci_trigger_remote_features_for_connection(conn); 3179 } 3180 3181 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3182 3183 hci_emit_nr_connections_changed(); 3184 } else { 3185 // connection failed 3186 hci_handle_connection_failed(conn, packet[2]); 3187 } 3188 } 3189 break; 3190 3191 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3192 reverse_bd_addr(&packet[5], addr); 3193 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3194 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3195 if (packet[2]){ 3196 // connection failed 3197 if (conn){ 3198 hci_handle_connection_failed(conn, packet[2]); 3199 } 3200 break; 3201 } 3202 if (!conn) { 3203 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3204 } 3205 if (!conn) { 3206 break; 3207 } 3208 conn->state = OPEN; 3209 conn->con_handle = little_endian_read_16(packet, 3); 3210 3211 #ifdef ENABLE_SCO_OVER_HCI 3212 // update SCO 3213 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3214 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3215 } 3216 // trigger can send now 3217 if (hci_have_usb_transport()){ 3218 hci_stack->sco_can_send_now = true; 3219 } 3220 #endif 3221 #ifdef HAVE_SCO_TRANSPORT 3222 // configure sco transport 3223 if (hci_stack->sco_transport != NULL){ 3224 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3225 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3226 } 3227 #endif 3228 break; 3229 3230 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3231 handle = little_endian_read_16(packet, 3); 3232 conn = hci_connection_for_handle(handle); 3233 if (!conn) break; 3234 if (!packet[2]){ 3235 const uint8_t * features = &packet[5]; 3236 hci_handle_remote_features_page_0(conn, features); 3237 3238 // read extended features if possible 3239 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3240 && ((conn->remote_supported_features[0] & 2) != 0)) { 3241 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3242 break; 3243 } 3244 } 3245 hci_handle_remote_features_received(conn); 3246 break; 3247 3248 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3249 handle = little_endian_read_16(packet, 3); 3250 conn = hci_connection_for_handle(handle); 3251 if (!conn) break; 3252 // status = ok, page = 1 3253 if (!packet[2]) { 3254 uint8_t page_number = packet[5]; 3255 uint8_t maximum_page_number = packet[6]; 3256 const uint8_t * features = &packet[7]; 3257 bool done = false; 3258 switch (page_number){ 3259 case 1: 3260 hci_handle_remote_features_page_1(conn, features); 3261 if (maximum_page_number >= 2){ 3262 // get Secure Connections (Controller) from Page 2 if available 3263 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3264 } else { 3265 // otherwise, assume SC (Controller) == SC (Host) 3266 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3267 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3268 } 3269 done = true; 3270 } 3271 break; 3272 case 2: 3273 hci_handle_remote_features_page_2(conn, features); 3274 done = true; 3275 break; 3276 default: 3277 break; 3278 } 3279 if (!done) break; 3280 } 3281 hci_handle_remote_features_received(conn); 3282 break; 3283 3284 case HCI_EVENT_LINK_KEY_REQUEST: 3285 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3286 hci_event_link_key_request_get_bd_addr(packet, addr); 3287 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3288 if (!conn) break; 3289 3290 // lookup link key in db if not cached 3291 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3292 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3293 } 3294 3295 // response sent by hci_run() 3296 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3297 #endif 3298 break; 3299 3300 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3301 hci_event_link_key_request_get_bd_addr(packet, addr); 3302 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3303 if (!conn) break; 3304 3305 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3306 3307 // CVE-2020-26555: ignore NULL link key 3308 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3309 if (btstack_is_null(&packet[8], 16)) break; 3310 3311 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3312 // Change Connection Encryption keeps link key type 3313 if (link_key_type != CHANGED_COMBINATION_KEY){ 3314 conn->link_key_type = link_key_type; 3315 } 3316 3317 // cache link key. link keys stored in little-endian format for legacy reasons 3318 memcpy(&conn->link_key, &packet[8], 16); 3319 3320 // only store link key: 3321 // - if bondable enabled 3322 if (hci_stack->bondable == false) break; 3323 // - if security level sufficient 3324 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3325 // - for SSP, also check if remote side requested bonding as well 3326 if (conn->link_key_type != COMBINATION_KEY){ 3327 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3328 if (!remote_bonding){ 3329 break; 3330 } 3331 } 3332 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3333 break; 3334 } 3335 3336 case HCI_EVENT_PIN_CODE_REQUEST: 3337 hci_event_pin_code_request_get_bd_addr(packet, addr); 3338 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3339 if (!conn) break; 3340 3341 hci_pairing_started(conn, false); 3342 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3343 if (!hci_stack->bondable ){ 3344 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3345 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3346 hci_run(); 3347 return; 3348 } 3349 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3350 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3351 log_info("Level 4 required, but SC not supported -> abort"); 3352 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3353 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3354 hci_run(); 3355 return; 3356 } 3357 break; 3358 3359 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3360 hci_event_io_capability_response_get_bd_addr(packet, addr); 3361 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3362 if (!conn) break; 3363 3364 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3365 hci_pairing_started(conn, true); 3366 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3367 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3368 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3369 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3370 #endif 3371 break; 3372 3373 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3374 hci_event_io_capability_response_get_bd_addr(packet, addr); 3375 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3376 if (!conn) break; 3377 3378 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3379 hci_connection_timestamp(conn); 3380 hci_pairing_started(conn, true); 3381 break; 3382 3383 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3384 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3385 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3386 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3387 if (!conn) break; 3388 3389 hci_connection_timestamp(conn); 3390 3391 hci_pairing_started(conn, true); 3392 3393 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3394 break; 3395 #endif 3396 3397 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3398 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3399 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3400 if (!conn) break; 3401 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3402 if (hci_stack->ssp_auto_accept){ 3403 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3404 }; 3405 } else { 3406 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3407 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3408 // don't forward event to app 3409 hci_run(); 3410 return; 3411 } 3412 break; 3413 3414 case HCI_EVENT_USER_PASSKEY_REQUEST: 3415 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3416 if (hci_stack->ssp_auto_accept){ 3417 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3418 }; 3419 break; 3420 3421 case HCI_EVENT_MODE_CHANGE: 3422 handle = hci_event_mode_change_get_handle(packet); 3423 conn = hci_connection_for_handle(handle); 3424 if (!conn) break; 3425 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3426 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3427 break; 3428 #endif 3429 3430 case HCI_EVENT_ENCRYPTION_CHANGE: 3431 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3432 handle = hci_event_encryption_change_get_connection_handle(packet); 3433 conn = hci_connection_for_handle(handle); 3434 if (!conn) break; 3435 if (hci_event_encryption_change_get_status(packet) == 0u) { 3436 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3437 if (encryption_enabled){ 3438 if (hci_is_le_connection(conn)){ 3439 // For LE, we accept connection as encrypted 3440 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3441 } 3442 #ifdef ENABLE_CLASSIC 3443 else { 3444 3445 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3446 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3447 bool connected_uses_aes_ccm = encryption_enabled == 2; 3448 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3449 log_info("SC during pairing, but only E0 now -> abort"); 3450 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3451 break; 3452 } 3453 3454 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3455 if (connected_uses_aes_ccm){ 3456 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3457 } 3458 3459 #ifdef ENABLE_TESTING_SUPPORT 3460 // work around for issue with PTS dongle 3461 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3462 #endif 3463 // validate encryption key size 3464 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3465 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3466 // already got encryption key size 3467 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3468 } else { 3469 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3470 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3471 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3472 } else { 3473 // if not, pretend everything is perfect 3474 hci_handle_read_encryption_key_size_complete(conn, 16); 3475 } 3476 } 3477 } 3478 #endif 3479 } else { 3480 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3481 } 3482 } else { 3483 uint8_t status = hci_event_encryption_change_get_status(packet); 3484 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3485 conn->bonding_flags &= ~BONDING_DEDICATED; 3486 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3487 conn->bonding_status = status; 3488 } 3489 } 3490 3491 break; 3492 3493 #ifdef ENABLE_CLASSIC 3494 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3495 handle = hci_event_authentication_complete_get_connection_handle(packet); 3496 conn = hci_connection_for_handle(handle); 3497 if (!conn) break; 3498 3499 // clear authentication active flag 3500 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3501 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3502 3503 // authenticated only if auth status == 0 3504 if (hci_event_authentication_complete_get_status(packet) == 0){ 3505 // authenticated 3506 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3507 3508 // If not already encrypted, start encryption 3509 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3510 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3511 break; 3512 } 3513 } 3514 3515 // emit updated security level 3516 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3517 break; 3518 3519 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3520 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3521 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3522 if (!conn) break; 3523 3524 // treat successfully paired connection as authenticated 3525 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3526 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3527 } 3528 3529 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3530 break; 3531 #endif 3532 3533 // HCI_EVENT_DISCONNECTION_COMPLETE 3534 // has been split, to first notify stack before shutting connection down 3535 // see end of function, too. 3536 case HCI_EVENT_DISCONNECTION_COMPLETE: 3537 if (packet[2]) break; // status != 0 3538 handle = little_endian_read_16(packet, 3); 3539 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3540 if (hci_stack->acl_fragmentation_total_size > 0u) { 3541 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3542 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3543 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3544 hci_stack->acl_fragmentation_total_size = 0; 3545 hci_stack->acl_fragmentation_pos = 0; 3546 if (release_buffer){ 3547 hci_release_packet_buffer(); 3548 } 3549 } 3550 } 3551 3552 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3553 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3554 if (hci_stack->iso_fragmentation_total_size > 0u) { 3555 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3556 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3557 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3558 hci_stack->iso_fragmentation_total_size = 0; 3559 hci_stack->iso_fragmentation_pos = 0; 3560 if (release_buffer){ 3561 hci_release_packet_buffer(); 3562 } 3563 } 3564 } 3565 3566 // finalize iso stream if handle matches 3567 iso_stream = hci_iso_stream_for_cis_handle(handle); 3568 if (iso_stream != NULL){ 3569 hci_iso_stream_finalize(iso_stream); 3570 break; 3571 } 3572 #endif 3573 3574 conn = hci_connection_for_handle(handle); 3575 if (!conn) break; 3576 #ifdef ENABLE_CLASSIC 3577 // pairing failed if it was ongoing 3578 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3579 #endif 3580 3581 // emit dedicatd bonding event 3582 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3583 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3584 } 3585 3586 // mark connection for shutdown, stop timers, reset state 3587 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3588 hci_connection_stop_timer(conn); 3589 hci_connection_init(conn); 3590 3591 #ifdef ENABLE_BLE 3592 #ifdef ENABLE_LE_PERIPHERAL 3593 // re-enable advertisements for le connections if active 3594 if (hci_is_le_connection(conn)){ 3595 hci_update_advertisements_enabled_for_current_roles(); 3596 } 3597 #endif 3598 #endif 3599 break; 3600 3601 case HCI_EVENT_HARDWARE_ERROR: 3602 log_error("Hardware Error: 0x%02x", packet[2]); 3603 if (hci_stack->hardware_error_callback){ 3604 (*hci_stack->hardware_error_callback)(packet[2]); 3605 } else { 3606 // if no special requests, just reboot stack 3607 hci_power_control_off(); 3608 hci_power_control_on(); 3609 } 3610 break; 3611 3612 #ifdef ENABLE_CLASSIC 3613 case HCI_EVENT_ROLE_CHANGE: 3614 if (packet[2]) break; // status != 0 3615 reverse_bd_addr(&packet[3], addr); 3616 addr_type = BD_ADDR_TYPE_ACL; 3617 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3618 if (!conn) break; 3619 conn->role = packet[9]; 3620 break; 3621 #endif 3622 3623 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3624 // release packet buffer only for asynchronous transport and if there are not further fragments 3625 if (hci_transport_synchronous()) { 3626 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3627 return; // instead of break: to avoid re-entering hci_run() 3628 } 3629 hci_stack->acl_fragmentation_tx_active = 0; 3630 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3631 hci_stack->iso_fragmentation_tx_active = 0; 3632 if (hci_stack->iso_fragmentation_total_size) break; 3633 #endif 3634 if (hci_stack->acl_fragmentation_total_size) break; 3635 hci_release_packet_buffer(); 3636 3637 // L2CAP receives this event via the hci_emit_event below 3638 3639 #ifdef ENABLE_CLASSIC 3640 // For SCO, we do the can_send_now_check here 3641 hci_notify_if_sco_can_send_now(); 3642 #endif 3643 break; 3644 3645 #ifdef ENABLE_CLASSIC 3646 case HCI_EVENT_SCO_CAN_SEND_NOW: 3647 // For SCO, we do the can_send_now_check here 3648 hci_stack->sco_can_send_now = true; 3649 hci_notify_if_sco_can_send_now(); 3650 return; 3651 3652 // explode inquriy results for easier consumption 3653 case HCI_EVENT_INQUIRY_RESULT: 3654 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3655 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3656 gap_inquiry_explode(packet, size); 3657 break; 3658 #endif 3659 3660 #ifdef ENABLE_BLE 3661 case HCI_EVENT_LE_META: 3662 switch (packet[2]){ 3663 #ifdef ENABLE_LE_CENTRAL 3664 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3665 if (!hci_stack->le_scanning_enabled) break; 3666 le_handle_advertisement_report(packet, size); 3667 break; 3668 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3669 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3670 if (!hci_stack->le_scanning_enabled) break; 3671 le_handle_extended_advertisement_report(packet, size); 3672 break; 3673 #endif 3674 #endif 3675 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3676 event_handle_le_connection_complete(packet); 3677 break; 3678 3679 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3680 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3681 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3682 conn = hci_connection_for_handle(handle); 3683 if (!conn) break; 3684 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3685 break; 3686 3687 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3688 // connection 3689 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3690 conn = hci_connection_for_handle(handle); 3691 if (conn) { 3692 // read arguments 3693 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3694 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3695 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3696 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3697 3698 // validate against current connection parameter range 3699 le_connection_parameter_range_t existing_range; 3700 gap_get_connection_parameter_range(&existing_range); 3701 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3702 if (update_parameter){ 3703 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3704 conn->le_conn_interval_min = le_conn_interval_min; 3705 conn->le_conn_interval_max = le_conn_interval_max; 3706 conn->le_conn_latency = le_conn_latency; 3707 conn->le_supervision_timeout = le_supervision_timeout; 3708 } else { 3709 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3710 } 3711 } 3712 break; 3713 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3714 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3715 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3716 conn = hci_connection_for_handle(handle); 3717 if (conn) { 3718 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3719 } 3720 break; 3721 #endif 3722 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3723 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 3724 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 3725 iso_stream = hci_iso_stream_for_cis_handle(handle); 3726 if (iso_stream){ 3727 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 3728 if (status == ERROR_CODE_SUCCESS){ 3729 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3730 } else { 3731 hci_iso_stream_finalize(iso_stream); 3732 } 3733 } 3734 #endif 3735 default: 3736 break; 3737 } 3738 break; 3739 #endif 3740 case HCI_EVENT_VENDOR_SPECIFIC: 3741 // Vendor specific commands often create vendor specific event instead of num completed packets 3742 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3743 switch (hci_stack->manufacturer){ 3744 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3745 hci_stack->num_cmd_packets = 1; 3746 break; 3747 default: 3748 break; 3749 } 3750 break; 3751 default: 3752 break; 3753 } 3754 3755 handle_event_for_current_stack_state(packet, size); 3756 3757 // notify upper stack 3758 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3759 3760 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3761 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3762 handle = little_endian_read_16(packet, 3); 3763 hci_connection_t * aConn = hci_connection_for_handle(handle); 3764 // discard connection if app did not trigger a reconnect in the event handler 3765 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3766 hci_shutdown_connection(aConn); 3767 } 3768 } 3769 3770 // execute main loop 3771 hci_run(); 3772 } 3773 3774 #ifdef ENABLE_CLASSIC 3775 3776 #ifdef ENABLE_SCO_OVER_HCI 3777 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3778 static void sco_schedule_tx(hci_connection_t * conn); 3779 3780 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3781 log_debug("SCO TX Timeout"); 3782 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3783 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3784 if (!conn) return; 3785 3786 // trigger send 3787 conn->sco_tx_ready = 1; 3788 // extra packet if CVSD but SCO buffer is too short 3789 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3790 conn->sco_tx_ready++; 3791 } 3792 hci_notify_if_sco_can_send_now(); 3793 } 3794 3795 3796 #define SCO_TX_AFTER_RX_MS (6) 3797 3798 static void sco_schedule_tx(hci_connection_t * conn){ 3799 3800 uint32_t now = btstack_run_loop_get_time_ms(); 3801 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 3802 int time_delta_ms = sco_tx_ms - now; 3803 3804 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 3805 3806 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 3807 btstack_run_loop_remove_timer(timer); 3808 btstack_run_loop_set_timer(timer, time_delta_ms); 3809 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 3810 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 3811 btstack_run_loop_add_timer(timer); 3812 } 3813 #endif 3814 3815 static void sco_handler(uint8_t * packet, uint16_t size){ 3816 // lookup connection struct 3817 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 3818 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3819 if (!conn) return; 3820 3821 #ifdef ENABLE_SCO_OVER_HCI 3822 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 3823 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 3824 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 3825 packet[2] = 0x3c; 3826 memmove(&packet[3], &packet[23], 63); 3827 size = 63; 3828 } 3829 } 3830 3831 if (hci_have_usb_transport()){ 3832 // Nothing to do 3833 } else { 3834 // 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); 3835 if (hci_stack->synchronous_flow_control_enabled == 0){ 3836 uint32_t now = btstack_run_loop_get_time_ms(); 3837 3838 if (!conn->sco_rx_valid){ 3839 // ignore first 10 packets 3840 conn->sco_rx_count++; 3841 // log_debug("sco rx count %u", conn->sco_rx_count); 3842 if (conn->sco_rx_count == 10) { 3843 // use first timestamp as is and pretent it just started 3844 conn->sco_rx_ms = now; 3845 conn->sco_rx_valid = 1; 3846 conn->sco_rx_count = 0; 3847 sco_schedule_tx(conn); 3848 } 3849 } else { 3850 // track expected arrival timme 3851 conn->sco_rx_count++; 3852 conn->sco_rx_ms += 7; 3853 int delta = (int32_t) (now - conn->sco_rx_ms); 3854 if (delta > 0){ 3855 conn->sco_rx_ms++; 3856 } 3857 // log_debug("sco rx %u", conn->sco_rx_ms); 3858 sco_schedule_tx(conn); 3859 } 3860 } 3861 } 3862 #endif 3863 3864 // deliver to app 3865 if (hci_stack->sco_packet_handler) { 3866 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 3867 } 3868 3869 #ifdef HAVE_SCO_TRANSPORT 3870 // We can send one packet for each received packet 3871 conn->sco_tx_ready++; 3872 hci_notify_if_sco_can_send_now(); 3873 #endif 3874 3875 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 3876 conn->num_packets_completed++; 3877 hci_stack->host_completed_packets = 1; 3878 hci_run(); 3879 #endif 3880 } 3881 #endif 3882 3883 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 3884 hci_dump_packet(packet_type, 1, packet, size); 3885 switch (packet_type) { 3886 case HCI_EVENT_PACKET: 3887 event_handler(packet, size); 3888 break; 3889 case HCI_ACL_DATA_PACKET: 3890 acl_handler(packet, size); 3891 break; 3892 #ifdef ENABLE_CLASSIC 3893 case HCI_SCO_DATA_PACKET: 3894 sco_handler(packet, size); 3895 break; 3896 #endif 3897 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3898 case HCI_ISO_DATA_PACKET: 3899 hci_iso_packet_handler(packet, size); 3900 break; 3901 #endif 3902 default: 3903 break; 3904 } 3905 } 3906 3907 /** 3908 * @brief Add event packet handler. 3909 */ 3910 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3911 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3912 } 3913 3914 /** 3915 * @brief Remove event packet handler. 3916 */ 3917 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3918 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3919 } 3920 3921 /** Register HCI packet handlers */ 3922 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 3923 hci_stack->acl_packet_handler = handler; 3924 } 3925 3926 #ifdef ENABLE_CLASSIC 3927 /** 3928 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 3929 */ 3930 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 3931 hci_stack->sco_packet_handler = handler; 3932 } 3933 #endif 3934 3935 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3936 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 3937 hci_stack->iso_packet_handler = handler; 3938 } 3939 #endif 3940 3941 static void hci_state_reset(void){ 3942 // no connections yet 3943 hci_stack->connections = NULL; 3944 3945 // keep discoverable/connectable as this has been requested by the client(s) 3946 // hci_stack->discoverable = 0; 3947 // hci_stack->connectable = 0; 3948 // hci_stack->bondable = 1; 3949 // hci_stack->own_addr_type = 0; 3950 3951 // buffer is free 3952 hci_stack->hci_packet_buffer_reserved = false; 3953 3954 // no pending cmds 3955 hci_stack->decline_reason = 0; 3956 3957 hci_stack->secure_connections_active = false; 3958 3959 #ifdef ENABLE_CLASSIC 3960 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 3961 hci_stack->page_timeout = 0x6000; // ca. 15 sec 3962 3963 hci_stack->gap_tasks_classic = 3964 GAP_TASK_SET_DEFAULT_LINK_POLICY | 3965 GAP_TASK_SET_CLASS_OF_DEVICE | 3966 GAP_TASK_SET_LOCAL_NAME | 3967 GAP_TASK_SET_EIR_DATA | 3968 GAP_TASK_WRITE_SCAN_ENABLE | 3969 GAP_TASK_WRITE_PAGE_TIMEOUT; 3970 #endif 3971 3972 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3973 hci_stack->classic_read_local_oob_data = false; 3974 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 3975 #endif 3976 3977 // LE 3978 #ifdef ENABLE_BLE 3979 memset(hci_stack->le_random_address, 0, 6); 3980 hci_stack->le_random_address_set = 0; 3981 #endif 3982 #ifdef ENABLE_LE_CENTRAL 3983 hci_stack->le_scanning_active = false; 3984 hci_stack->le_scanning_param_update = true; 3985 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3986 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3987 hci_stack->le_whitelist_capacity = 0; 3988 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3989 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 3990 #endif 3991 #endif 3992 #ifdef ENABLE_LE_PERIPHERAL 3993 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3994 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 3995 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 3996 } 3997 if (hci_stack->le_advertisements_data != NULL){ 3998 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 3999 } 4000 #endif 4001 } 4002 4003 #ifdef ENABLE_CLASSIC 4004 /** 4005 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4006 */ 4007 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4008 // store and open remote device db 4009 hci_stack->link_key_db = link_key_db; 4010 if (hci_stack->link_key_db) { 4011 hci_stack->link_key_db->open(); 4012 } 4013 } 4014 #endif 4015 4016 void hci_init(const hci_transport_t *transport, const void *config){ 4017 4018 #ifdef HAVE_MALLOC 4019 if (!hci_stack) { 4020 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4021 } 4022 #else 4023 hci_stack = &hci_stack_static; 4024 #endif 4025 memset(hci_stack, 0, sizeof(hci_stack_t)); 4026 4027 // reference to use transport layer implementation 4028 hci_stack->hci_transport = transport; 4029 4030 // reference to used config 4031 hci_stack->config = config; 4032 4033 // setup pointer for outgoing packet buffer 4034 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4035 4036 // max acl payload size defined in config.h 4037 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4038 4039 // register packet handlers with transport 4040 transport->register_packet_handler(&packet_handler); 4041 4042 hci_stack->state = HCI_STATE_OFF; 4043 4044 // class of device 4045 hci_stack->class_of_device = 0x007a020c; // Smartphone 4046 4047 // bondable by default 4048 hci_stack->bondable = 1; 4049 4050 #ifdef ENABLE_CLASSIC 4051 // classic name 4052 hci_stack->local_name = default_classic_name; 4053 4054 // Master slave policy 4055 hci_stack->master_slave_policy = 1; 4056 4057 // Allow Role Switch 4058 hci_stack->allow_role_switch = 1; 4059 4060 // Default / minimum security level = 2 4061 hci_stack->gap_security_level = LEVEL_2; 4062 4063 // Default Security Mode 4 4064 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4065 4066 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4067 hci_stack->gap_required_encyrption_key_size = 7; 4068 4069 // Link Supervision Timeout 4070 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4071 4072 #endif 4073 4074 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4075 hci_stack->ssp_enable = 1; 4076 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4077 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4078 hci_stack->ssp_auto_accept = 1; 4079 4080 // Secure Connections: enable (requires support from Controller) 4081 hci_stack->secure_connections_enable = true; 4082 4083 // voice setting - signed 16 bit pcm data with CVSD over the air 4084 hci_stack->sco_voice_setting = 0x60; 4085 4086 #ifdef ENABLE_LE_CENTRAL 4087 // connection parameter to use for outgoing connections 4088 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4089 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4090 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4091 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4092 hci_stack->le_connection_latency = 4; // 4 4093 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4094 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4095 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4096 4097 // default LE Scanning 4098 hci_stack->le_scan_type = 0x1; // active 4099 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4100 hci_stack->le_scan_window = 0x30; // 30 ms 4101 #endif 4102 4103 #ifdef ENABLE_LE_PERIPHERAL 4104 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4105 #endif 4106 4107 // connection parameter range used to answer connection parameter update requests in l2cap 4108 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4109 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4110 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4111 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4112 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4113 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4114 4115 hci_state_reset(); 4116 } 4117 4118 void hci_deinit(void){ 4119 btstack_run_loop_remove_timer(&hci_stack->timeout); 4120 #ifdef HAVE_MALLOC 4121 if (hci_stack) { 4122 free(hci_stack); 4123 } 4124 #endif 4125 hci_stack = NULL; 4126 4127 #ifdef ENABLE_CLASSIC 4128 disable_l2cap_timeouts = 0; 4129 #endif 4130 } 4131 4132 /** 4133 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4134 */ 4135 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4136 hci_stack->chipset = chipset_driver; 4137 4138 // reset chipset driver - init is also called on power_up 4139 if (hci_stack->chipset && hci_stack->chipset->init){ 4140 hci_stack->chipset->init(hci_stack->config); 4141 } 4142 } 4143 4144 /** 4145 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4146 */ 4147 void hci_set_control(const btstack_control_t *hardware_control){ 4148 // references to used control implementation 4149 hci_stack->control = hardware_control; 4150 // init with transport config 4151 hardware_control->init(hci_stack->config); 4152 } 4153 4154 static void hci_discard_connections(void){ 4155 btstack_linked_list_iterator_t lit; 4156 btstack_linked_list_iterator_init(&lit, &hci_stack->connections); 4157 while (btstack_linked_list_iterator_has_next(&lit)){ 4158 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4159 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&lit); 4160 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4161 hci_shutdown_connection(connection); 4162 } 4163 } 4164 4165 void hci_close(void){ 4166 4167 #ifdef ENABLE_CLASSIC 4168 // close remote device db 4169 if (hci_stack->link_key_db) { 4170 hci_stack->link_key_db->close(); 4171 } 4172 #endif 4173 4174 hci_discard_connections(); 4175 4176 hci_power_control(HCI_POWER_OFF); 4177 4178 #ifdef HAVE_MALLOC 4179 free(hci_stack); 4180 #endif 4181 hci_stack = NULL; 4182 } 4183 4184 #ifdef HAVE_SCO_TRANSPORT 4185 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4186 hci_stack->sco_transport = sco_transport; 4187 sco_transport->register_packet_handler(&packet_handler); 4188 } 4189 #endif 4190 4191 #ifdef ENABLE_CLASSIC 4192 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4193 // validate ranage and set 4194 if (encryption_key_size < 7) return; 4195 if (encryption_key_size > 16) return; 4196 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4197 } 4198 4199 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4200 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4201 hci_stack->gap_security_mode = security_mode; 4202 return ERROR_CODE_SUCCESS; 4203 } else { 4204 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4205 } 4206 } 4207 4208 gap_security_mode_t gap_get_security_mode(void){ 4209 return hci_stack->gap_security_mode; 4210 } 4211 4212 void gap_set_security_level(gap_security_level_t security_level){ 4213 hci_stack->gap_security_level = security_level; 4214 } 4215 4216 gap_security_level_t gap_get_security_level(void){ 4217 if (hci_stack->gap_secure_connections_only_mode){ 4218 return LEVEL_4; 4219 } 4220 return hci_stack->gap_security_level; 4221 } 4222 4223 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4224 hci_stack->gap_minimal_service_security_level = security_level; 4225 } 4226 4227 void gap_set_secure_connections_only_mode(bool enable){ 4228 hci_stack->gap_secure_connections_only_mode = enable; 4229 } 4230 4231 bool gap_get_secure_connections_only_mode(void){ 4232 return hci_stack->gap_secure_connections_only_mode; 4233 } 4234 #endif 4235 4236 #ifdef ENABLE_CLASSIC 4237 void gap_set_class_of_device(uint32_t class_of_device){ 4238 hci_stack->class_of_device = class_of_device; 4239 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4240 hci_run(); 4241 } 4242 4243 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4244 hci_stack->default_link_policy_settings = default_link_policy_settings; 4245 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4246 hci_run(); 4247 } 4248 4249 void gap_set_allow_role_switch(bool allow_role_switch){ 4250 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4251 } 4252 4253 uint8_t hci_get_allow_role_switch(void){ 4254 return hci_stack->allow_role_switch; 4255 } 4256 4257 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4258 hci_stack->link_supervision_timeout = link_supervision_timeout; 4259 } 4260 4261 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4262 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4263 } 4264 4265 uint16_t hci_automatic_flush_timeout(void){ 4266 return hci_stack->automatic_flush_timeout; 4267 } 4268 4269 void hci_disable_l2cap_timeout_check(void){ 4270 disable_l2cap_timeouts = 1; 4271 } 4272 #endif 4273 4274 #ifndef HAVE_HOST_CONTROLLER_API 4275 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4276 void hci_set_bd_addr(bd_addr_t addr){ 4277 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4278 hci_stack->custom_bd_addr_set = 1; 4279 } 4280 #endif 4281 4282 // State-Module-Driver overview 4283 // state module low-level 4284 // HCI_STATE_OFF off close 4285 // HCI_STATE_INITIALIZING, on open 4286 // HCI_STATE_WORKING, on open 4287 // HCI_STATE_HALTING, on open 4288 // HCI_STATE_SLEEPING, off/sleep close 4289 // HCI_STATE_FALLING_ASLEEP on open 4290 4291 static int hci_power_control_on(void){ 4292 4293 // power on 4294 int err = 0; 4295 if (hci_stack->control && hci_stack->control->on){ 4296 err = (*hci_stack->control->on)(); 4297 } 4298 if (err){ 4299 log_error( "POWER_ON failed"); 4300 hci_emit_hci_open_failed(); 4301 return err; 4302 } 4303 4304 // int chipset driver 4305 if (hci_stack->chipset && hci_stack->chipset->init){ 4306 hci_stack->chipset->init(hci_stack->config); 4307 } 4308 4309 // init transport 4310 if (hci_stack->hci_transport->init){ 4311 hci_stack->hci_transport->init(hci_stack->config); 4312 } 4313 4314 // open transport 4315 err = hci_stack->hci_transport->open(); 4316 if (err){ 4317 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4318 if (hci_stack->control && hci_stack->control->off){ 4319 (*hci_stack->control->off)(); 4320 } 4321 hci_emit_hci_open_failed(); 4322 return err; 4323 } 4324 return 0; 4325 } 4326 4327 static void hci_power_control_off(void){ 4328 4329 log_info("hci_power_control_off"); 4330 4331 // close low-level device 4332 hci_stack->hci_transport->close(); 4333 4334 log_info("hci_power_control_off - hci_transport closed"); 4335 4336 // power off 4337 if (hci_stack->control && hci_stack->control->off){ 4338 (*hci_stack->control->off)(); 4339 } 4340 4341 log_info("hci_power_control_off - control closed"); 4342 4343 hci_stack->state = HCI_STATE_OFF; 4344 } 4345 4346 static void hci_power_control_sleep(void){ 4347 4348 log_info("hci_power_control_sleep"); 4349 4350 #if 0 4351 // don't close serial port during sleep 4352 4353 // close low-level device 4354 hci_stack->hci_transport->close(hci_stack->config); 4355 #endif 4356 4357 // sleep mode 4358 if (hci_stack->control && hci_stack->control->sleep){ 4359 (*hci_stack->control->sleep)(); 4360 } 4361 4362 hci_stack->state = HCI_STATE_SLEEPING; 4363 } 4364 4365 static int hci_power_control_wake(void){ 4366 4367 log_info("hci_power_control_wake"); 4368 4369 // wake on 4370 if (hci_stack->control && hci_stack->control->wake){ 4371 (*hci_stack->control->wake)(); 4372 } 4373 4374 #if 0 4375 // open low-level device 4376 int err = hci_stack->hci_transport->open(hci_stack->config); 4377 if (err){ 4378 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4379 if (hci_stack->control && hci_stack->control->off){ 4380 (*hci_stack->control->off)(); 4381 } 4382 hci_emit_hci_open_failed(); 4383 return err; 4384 } 4385 #endif 4386 4387 return 0; 4388 } 4389 4390 static void hci_power_enter_initializing_state(void){ 4391 // set up state machine 4392 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4393 hci_stack->hci_packet_buffer_reserved = false; 4394 hci_stack->state = HCI_STATE_INITIALIZING; 4395 hci_stack->substate = HCI_INIT_SEND_RESET; 4396 } 4397 4398 static void hci_power_enter_halting_state(void){ 4399 #ifdef ENABLE_BLE 4400 hci_whitelist_free(); 4401 #endif 4402 // see hci_run 4403 hci_stack->state = HCI_STATE_HALTING; 4404 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4405 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4406 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4407 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4408 btstack_run_loop_add_timer(&hci_stack->timeout); 4409 } 4410 4411 // returns error 4412 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4413 int err; 4414 switch (power_mode){ 4415 case HCI_POWER_ON: 4416 err = hci_power_control_on(); 4417 if (err != 0) { 4418 log_error("hci_power_control_on() error %d", err); 4419 return err; 4420 } 4421 hci_power_enter_initializing_state(); 4422 break; 4423 case HCI_POWER_OFF: 4424 // do nothing 4425 break; 4426 case HCI_POWER_SLEEP: 4427 // do nothing (with SLEEP == OFF) 4428 break; 4429 default: 4430 btstack_assert(false); 4431 break; 4432 } 4433 return ERROR_CODE_SUCCESS; 4434 } 4435 4436 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4437 switch (power_mode){ 4438 case HCI_POWER_ON: 4439 // do nothing 4440 break; 4441 case HCI_POWER_OFF: 4442 // no connections yet, just turn it off 4443 hci_power_control_off(); 4444 break; 4445 case HCI_POWER_SLEEP: 4446 // no connections yet, just turn it off 4447 hci_power_control_sleep(); 4448 break; 4449 default: 4450 btstack_assert(false); 4451 break; 4452 } 4453 return ERROR_CODE_SUCCESS; 4454 } 4455 4456 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4457 switch (power_mode){ 4458 case HCI_POWER_ON: 4459 // do nothing 4460 break; 4461 case HCI_POWER_OFF: 4462 hci_power_enter_halting_state(); 4463 break; 4464 case HCI_POWER_SLEEP: 4465 // see hci_run 4466 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4467 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4468 break; 4469 default: 4470 btstack_assert(false); 4471 break; 4472 } 4473 return ERROR_CODE_SUCCESS; 4474 } 4475 4476 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4477 switch (power_mode){ 4478 case HCI_POWER_ON: 4479 hci_power_enter_initializing_state(); 4480 break; 4481 case HCI_POWER_OFF: 4482 // do nothing 4483 break; 4484 case HCI_POWER_SLEEP: 4485 // see hci_run 4486 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4487 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4488 break; 4489 default: 4490 btstack_assert(false); 4491 break; 4492 } 4493 return ERROR_CODE_SUCCESS; 4494 } 4495 4496 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4497 switch (power_mode){ 4498 case HCI_POWER_ON: 4499 hci_power_enter_initializing_state(); 4500 break; 4501 case HCI_POWER_OFF: 4502 hci_power_enter_halting_state(); 4503 break; 4504 case HCI_POWER_SLEEP: 4505 // do nothing 4506 break; 4507 default: 4508 btstack_assert(false); 4509 break; 4510 } 4511 return ERROR_CODE_SUCCESS; 4512 } 4513 4514 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4515 int err; 4516 switch (power_mode){ 4517 case HCI_POWER_ON: 4518 err = hci_power_control_wake(); 4519 if (err) return err; 4520 hci_power_enter_initializing_state(); 4521 break; 4522 case HCI_POWER_OFF: 4523 hci_power_enter_halting_state(); 4524 break; 4525 case HCI_POWER_SLEEP: 4526 // do nothing 4527 break; 4528 default: 4529 btstack_assert(false); 4530 break; 4531 } 4532 return ERROR_CODE_SUCCESS; 4533 } 4534 4535 int hci_power_control(HCI_POWER_MODE power_mode){ 4536 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4537 int err = 0; 4538 switch (hci_stack->state){ 4539 case HCI_STATE_OFF: 4540 err = hci_power_control_state_off(power_mode); 4541 break; 4542 case HCI_STATE_INITIALIZING: 4543 err = hci_power_control_state_initializing(power_mode); 4544 break; 4545 case HCI_STATE_WORKING: 4546 err = hci_power_control_state_working(power_mode); 4547 break; 4548 case HCI_STATE_HALTING: 4549 err = hci_power_control_state_halting(power_mode); 4550 break; 4551 case HCI_STATE_FALLING_ASLEEP: 4552 err = hci_power_control_state_falling_asleep(power_mode); 4553 break; 4554 case HCI_STATE_SLEEPING: 4555 err = hci_power_control_state_sleeping(power_mode); 4556 break; 4557 default: 4558 btstack_assert(false); 4559 break; 4560 } 4561 if (err != 0){ 4562 return err; 4563 } 4564 4565 // create internal event 4566 hci_emit_state(); 4567 4568 // trigger next/first action 4569 hci_run(); 4570 4571 return 0; 4572 } 4573 4574 4575 static void hci_halting_run(void) { 4576 4577 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4578 4579 hci_connection_t *connection; 4580 #ifdef ENABLE_BLE 4581 #ifdef ENABLE_LE_PERIPHERAL 4582 bool stop_advertismenets; 4583 #endif 4584 #endif 4585 4586 switch (hci_stack->substate) { 4587 case HCI_HALTING_CLASSIC_STOP: 4588 #ifdef ENABLE_CLASSIC 4589 if (!hci_can_send_command_packet_now()) return; 4590 4591 if (hci_stack->connectable || hci_stack->discoverable){ 4592 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4593 hci_send_cmd(&hci_write_scan_enable, 0); 4594 return; 4595 } 4596 #endif 4597 /* fall through */ 4598 4599 case HCI_HALTING_LE_ADV_STOP: 4600 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4601 4602 #ifdef ENABLE_BLE 4603 #ifdef ENABLE_LE_PERIPHERAL 4604 if (!hci_can_send_command_packet_now()) return; 4605 4606 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4607 4608 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4609 if (hci_extended_advertising_supported()){ 4610 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4611 btstack_linked_list_iterator_t it; 4612 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4613 // stop all periodic advertisements and check if an extended set is active 4614 while (btstack_linked_list_iterator_has_next(&it)){ 4615 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4616 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4617 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4618 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4619 return; 4620 } 4621 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4622 stop_advertismenets = true; 4623 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4624 } 4625 } 4626 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4627 if (stop_advertismenets){ 4628 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4629 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4630 return; 4631 } 4632 } 4633 else 4634 #else 4635 { 4636 if (stop_advertismenets) { 4637 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4638 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4639 return; 4640 } 4641 } 4642 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4643 #endif /* ENABLE_LE_PERIPHERAL */ 4644 #endif /* ENABLE_BLE */ 4645 4646 /* fall through */ 4647 4648 case HCI_HALTING_LE_SCAN_STOP: 4649 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4650 if (!hci_can_send_command_packet_now()) return; 4651 4652 #ifdef ENABLE_BLE 4653 #ifdef ENABLE_LE_CENTRAL 4654 if (hci_stack->le_scanning_active){ 4655 hci_le_scan_stop(); 4656 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4657 return; 4658 } 4659 #endif 4660 #endif 4661 4662 /* fall through */ 4663 4664 case HCI_HALTING_DISCONNECT_ALL: 4665 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4666 if (!hci_can_send_command_packet_now()) return; 4667 4668 // close all open connections 4669 connection = (hci_connection_t *) hci_stack->connections; 4670 if (connection) { 4671 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4672 4673 // check state 4674 if (connection->state == SENT_DISCONNECT) return; 4675 connection->state = SENT_DISCONNECT; 4676 4677 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4678 4679 // finally, send the disconnect command 4680 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4681 return; 4682 } 4683 4684 btstack_run_loop_remove_timer(&hci_stack->timeout); 4685 4686 hci_stack->substate = HCI_HALTING_READY_FOR_CLOSE; 4687 4688 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4689 log_info("HCI_STATE_HALTING: wait 50 ms"); 4690 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4691 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4692 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4693 btstack_run_loop_add_timer(&hci_stack->timeout); 4694 break; 4695 4696 case HCI_HALTING_CLOSE: 4697 // close left over connections (that had not been properly closed before) 4698 hci_discard_connections(); 4699 4700 log_info("HCI_STATE_HALTING, calling off"); 4701 4702 // switch mode 4703 hci_power_control_off(); 4704 4705 log_info("HCI_STATE_HALTING, emitting state"); 4706 hci_emit_state(); 4707 log_info("HCI_STATE_HALTING, done"); 4708 break; 4709 4710 case HCI_HALTING_W4_CLOSE_TIMER: 4711 // keep waiting 4712 4713 break; 4714 default: 4715 break; 4716 } 4717 }; 4718 4719 static void hci_falling_asleep_run(void){ 4720 hci_connection_t * connection; 4721 switch(hci_stack->substate) { 4722 case HCI_FALLING_ASLEEP_DISCONNECT: 4723 log_info("HCI_STATE_FALLING_ASLEEP"); 4724 // close all open connections 4725 connection = (hci_connection_t *) hci_stack->connections; 4726 if (connection){ 4727 4728 // send disconnect 4729 if (!hci_can_send_command_packet_now()) return; 4730 4731 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4732 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4733 4734 // send disconnected event right away - causes higher layer connections to get closed, too. 4735 hci_shutdown_connection(connection); 4736 return; 4737 } 4738 4739 if (hci_classic_supported()){ 4740 // disable page and inquiry scan 4741 if (!hci_can_send_command_packet_now()) return; 4742 4743 log_info("HCI_STATE_HALTING, disabling inq scans"); 4744 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4745 4746 // continue in next sub state 4747 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4748 break; 4749 } 4750 4751 /* fall through */ 4752 4753 case HCI_FALLING_ASLEEP_COMPLETE: 4754 log_info("HCI_STATE_HALTING, calling sleep"); 4755 // switch mode 4756 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4757 hci_emit_state(); 4758 break; 4759 4760 default: 4761 break; 4762 } 4763 } 4764 4765 #ifdef ENABLE_CLASSIC 4766 4767 static void hci_update_scan_enable(void){ 4768 // 2 = page scan, 1 = inq scan 4769 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4770 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4771 hci_run(); 4772 } 4773 4774 void gap_discoverable_control(uint8_t enable){ 4775 if (enable) enable = 1; // normalize argument 4776 4777 if (hci_stack->discoverable == enable){ 4778 hci_emit_discoverable_enabled(hci_stack->discoverable); 4779 return; 4780 } 4781 4782 hci_stack->discoverable = enable; 4783 hci_update_scan_enable(); 4784 } 4785 4786 void gap_connectable_control(uint8_t enable){ 4787 if (enable) enable = 1; // normalize argument 4788 4789 // don't emit event 4790 if (hci_stack->connectable == enable) return; 4791 4792 hci_stack->connectable = enable; 4793 hci_update_scan_enable(); 4794 } 4795 #endif 4796 4797 void gap_local_bd_addr(bd_addr_t address_buffer){ 4798 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 4799 } 4800 4801 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4802 static void hci_host_num_completed_packets(void){ 4803 4804 // create packet manually as arrays are not supported and num_commands should not get reduced 4805 hci_reserve_packet_buffer(); 4806 uint8_t * packet = hci_get_outgoing_packet_buffer(); 4807 4808 uint16_t size = 0; 4809 uint16_t num_handles = 0; 4810 packet[size++] = 0x35; 4811 packet[size++] = 0x0c; 4812 size++; // skip param len 4813 size++; // skip num handles 4814 4815 // add { handle, packets } entries 4816 btstack_linked_item_t * it; 4817 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 4818 hci_connection_t * connection = (hci_connection_t *) it; 4819 if (connection->num_packets_completed){ 4820 little_endian_store_16(packet, size, connection->con_handle); 4821 size += 2; 4822 little_endian_store_16(packet, size, connection->num_packets_completed); 4823 size += 2; 4824 // 4825 num_handles++; 4826 connection->num_packets_completed = 0; 4827 } 4828 } 4829 4830 packet[2] = size - 3; 4831 packet[3] = num_handles; 4832 4833 hci_stack->host_completed_packets = 0; 4834 4835 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 4836 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 4837 4838 // release packet buffer for synchronous transport implementations 4839 if (hci_transport_synchronous()){ 4840 hci_release_packet_buffer(); 4841 hci_emit_transport_packet_sent(); 4842 } 4843 } 4844 #endif 4845 4846 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 4847 UNUSED(ds); 4848 hci_stack->substate = HCI_HALTING_CLOSE; 4849 // allow packet handlers to defer final shutdown 4850 hci_emit_state(); 4851 hci_run(); 4852 } 4853 4854 static bool hci_run_acl_fragments(void){ 4855 if (hci_stack->acl_fragmentation_total_size > 0u) { 4856 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 4857 hci_connection_t *connection = hci_connection_for_handle(con_handle); 4858 if (connection) { 4859 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 4860 hci_send_acl_packet_fragments(connection); 4861 return true; 4862 } 4863 } else { 4864 // connection gone -> discard further fragments 4865 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 4866 hci_stack->acl_fragmentation_total_size = 0; 4867 hci_stack->acl_fragmentation_pos = 0; 4868 } 4869 } 4870 return false; 4871 } 4872 4873 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4874 static bool hci_run_iso_fragments(void){ 4875 if (hci_stack->iso_fragmentation_total_size > 0u) { 4876 // TODO: flow control 4877 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 4878 hci_send_iso_packet_fragments(); 4879 return true; 4880 } 4881 } 4882 return false; 4883 } 4884 #endif 4885 4886 #ifdef ENABLE_CLASSIC 4887 4888 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4889 static bool hci_classic_operation_active(void) { 4890 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 4891 return true; 4892 } 4893 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 4894 return true; 4895 } 4896 btstack_linked_item_t * it; 4897 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 4898 hci_connection_t *connection = (hci_connection_t *) it; 4899 switch (connection->state) { 4900 case SENT_CREATE_CONNECTION: 4901 case SENT_CANCEL_CONNECTION: 4902 case SENT_DISCONNECT: 4903 return true; 4904 default: 4905 break; 4906 } 4907 } 4908 return false; 4909 } 4910 #endif 4911 4912 static bool hci_run_general_gap_classic(void){ 4913 4914 // assert stack is working and classic is active 4915 if (hci_classic_supported() == false) return false; 4916 if (hci_stack->state != HCI_STATE_WORKING) return false; 4917 4918 // decline incoming connections 4919 if (hci_stack->decline_reason){ 4920 uint8_t reason = hci_stack->decline_reason; 4921 hci_stack->decline_reason = 0; 4922 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 4923 return true; 4924 } 4925 4926 if (hci_stack->gap_tasks_classic != 0){ 4927 hci_run_gap_tasks_classic(); 4928 return true; 4929 } 4930 4931 // start/stop inquiry 4932 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 4933 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4934 if (hci_classic_operation_active() == false) 4935 #endif 4936 { 4937 uint8_t duration = hci_stack->inquiry_state; 4938 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 4939 if (hci_stack->inquiry_max_period_length != 0){ 4940 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); 4941 } else { 4942 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 4943 } 4944 return true; 4945 } 4946 } 4947 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 4948 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 4949 hci_send_cmd(&hci_inquiry_cancel); 4950 return true; 4951 } 4952 4953 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 4954 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 4955 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 4956 return true; 4957 } 4958 4959 // remote name request 4960 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 4961 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 4962 if (hci_classic_operation_active() == false) 4963 #endif 4964 { 4965 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 4966 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 4967 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 4968 return true; 4969 } 4970 } 4971 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4972 // Local OOB data 4973 if (hci_stack->classic_read_local_oob_data){ 4974 hci_stack->classic_read_local_oob_data = false; 4975 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 4976 hci_send_cmd(&hci_read_local_extended_oob_data); 4977 } else { 4978 hci_send_cmd(&hci_read_local_oob_data); 4979 } 4980 } 4981 #endif 4982 // pairing 4983 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 4984 uint8_t state = hci_stack->gap_pairing_state; 4985 uint8_t pin_code[16]; 4986 switch (state){ 4987 case GAP_PAIRING_STATE_SEND_PIN: 4988 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4989 memset(pin_code, 0, 16); 4990 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 4991 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 4992 break; 4993 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 4994 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 4995 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 4996 break; 4997 case GAP_PAIRING_STATE_SEND_PASSKEY: 4998 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 4999 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5000 break; 5001 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5002 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5003 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5004 break; 5005 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5006 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5007 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5008 break; 5009 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5010 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5011 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5012 break; 5013 default: 5014 break; 5015 } 5016 return true; 5017 } 5018 return false; 5019 } 5020 #endif 5021 5022 #ifdef ENABLE_BLE 5023 5024 #ifdef ENABLE_LE_CENTRAL 5025 static void hci_le_scan_stop(void){ 5026 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5027 if (hci_extended_advertising_supported()) { 5028 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5029 } else 5030 #endif 5031 { 5032 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5033 } 5034 } 5035 #endif 5036 5037 #ifdef ENABLE_LE_PERIPHERAL 5038 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5039 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5040 uint8_t operation = 0; 5041 if (pos == 0){ 5042 // first fragment or complete data 5043 operation |= 1; 5044 } 5045 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5046 // last fragment or complete data 5047 operation |= 2; 5048 } 5049 return operation; 5050 } 5051 #endif 5052 #endif 5053 5054 static bool hci_run_general_gap_le(void){ 5055 5056 btstack_linked_list_iterator_t lit; 5057 5058 // Phase 1: collect what to stop 5059 5060 #ifdef ENABLE_LE_CENTRAL 5061 bool scanning_stop = false; 5062 bool connecting_stop = false; 5063 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5064 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5065 bool periodic_sync_stop = false; 5066 #endif 5067 #endif 5068 #endif 5069 5070 #ifdef ENABLE_LE_PERIPHERAL 5071 bool advertising_stop = false; 5072 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5073 le_advertising_set_t * advertising_stop_set = NULL; 5074 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5075 bool periodic_advertising_stop = false; 5076 #endif 5077 #endif 5078 #endif 5079 5080 // check if own address changes 5081 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5082 5083 // check if whitelist needs modification 5084 bool whitelist_modification_pending = false; 5085 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5086 while (btstack_linked_list_iterator_has_next(&lit)){ 5087 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5088 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5089 whitelist_modification_pending = true; 5090 break; 5091 } 5092 } 5093 5094 // check if resolving list needs modification 5095 bool resolving_list_modification_pending = false; 5096 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5097 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5098 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5099 resolving_list_modification_pending = true; 5100 } 5101 #endif 5102 5103 #ifdef ENABLE_LE_CENTRAL 5104 5105 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5106 // check if periodic advertiser list needs modification 5107 bool periodic_list_modification_pending = false; 5108 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5109 while (btstack_linked_list_iterator_has_next(&lit)){ 5110 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5111 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5112 periodic_list_modification_pending = true; 5113 break; 5114 } 5115 } 5116 #endif 5117 5118 // scanning control 5119 if (hci_stack->le_scanning_active) { 5120 // stop if: 5121 // - parameter change required 5122 // - it's disabled 5123 // - whitelist change required but used for scanning 5124 // - resolving list modified 5125 // - own address changes 5126 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5127 if ((hci_stack->le_scanning_param_update) || 5128 !hci_stack->le_scanning_enabled || 5129 (scanning_uses_whitelist && whitelist_modification_pending) || 5130 resolving_list_modification_pending || 5131 random_address_change){ 5132 5133 scanning_stop = true; 5134 } 5135 } 5136 5137 // connecting control 5138 bool connecting_with_whitelist; 5139 switch (hci_stack->le_connecting_state){ 5140 case LE_CONNECTING_DIRECT: 5141 case LE_CONNECTING_WHITELIST: 5142 // stop connecting if: 5143 // - connecting uses white and whitelist modification pending 5144 // - if it got disabled 5145 // - resolving list modified 5146 // - own address changes 5147 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5148 if ((connecting_with_whitelist && whitelist_modification_pending) || 5149 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5150 resolving_list_modification_pending || 5151 random_address_change) { 5152 5153 connecting_stop = true; 5154 } 5155 break; 5156 default: 5157 break; 5158 } 5159 5160 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5161 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5162 // periodic sync control 5163 bool sync_with_advertiser_list; 5164 switch(hci_stack->le_periodic_sync_state){ 5165 case LE_CONNECTING_DIRECT: 5166 case LE_CONNECTING_WHITELIST: 5167 // stop sync if: 5168 // - sync with advertiser list and advertiser list modification pending 5169 // - if it got disabled 5170 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5171 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5172 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5173 periodic_sync_stop = true; 5174 } 5175 break; 5176 default: 5177 break; 5178 } 5179 #endif 5180 #endif 5181 5182 #endif /* ENABLE_LE_CENTRAL */ 5183 5184 #ifdef ENABLE_LE_PERIPHERAL 5185 // le advertisement control 5186 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5187 // stop if: 5188 // - parameter change required 5189 // - random address used in advertising and changes 5190 // - it's disabled 5191 // - whitelist change required but used for advertisement filter policy 5192 // - resolving list modified 5193 // - own address changes 5194 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5195 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5196 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5197 if (advertising_change || 5198 (advertising_uses_random_address && random_address_change) || 5199 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5200 (advertising_uses_whitelist && whitelist_modification_pending) || 5201 resolving_list_modification_pending || 5202 random_address_change) { 5203 5204 advertising_stop = true; 5205 } 5206 } 5207 5208 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5209 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5210 btstack_linked_list_iterator_t it; 5211 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5212 while (btstack_linked_list_iterator_has_next(&it)){ 5213 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5214 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5215 // stop if: 5216 // - parameter change required 5217 // - random address used in connectable advertising and changes 5218 // - it's disabled 5219 // - whitelist change required but used for advertisement filter policy 5220 // - resolving list modified 5221 // - own address changes 5222 // - advertisement set will be removed 5223 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5224 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5225 bool advertising_uses_random_address = 5226 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5227 advertising_connectable; 5228 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5229 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5230 bool advertising_set_random_address_change = 5231 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5232 bool advertising_set_will_be_removed = 5233 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5234 if (advertising_parameter_change || 5235 (advertising_uses_random_address && advertising_set_random_address_change) || 5236 (advertising_enabled == false) || 5237 (advertising_uses_whitelist && whitelist_modification_pending) || 5238 resolving_list_modification_pending || 5239 advertising_set_will_be_removed) { 5240 5241 advertising_stop = true; 5242 advertising_stop_set = advertising_set; 5243 break; 5244 } 5245 } 5246 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5247 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5248 // stop if: 5249 // - it's disabled 5250 // - parameter change required 5251 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5252 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5253 if ((periodic_enabled == false) || periodic_parameter_change){ 5254 periodic_advertising_stop = true; 5255 advertising_stop_set = advertising_set; 5256 } 5257 } 5258 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5259 } 5260 } 5261 #endif 5262 5263 #endif 5264 5265 5266 // Phase 2: stop everything that should be off during modifications 5267 5268 #ifdef ENABLE_LE_CENTRAL 5269 if (scanning_stop){ 5270 hci_stack->le_scanning_active = false; 5271 hci_le_scan_stop(); 5272 return true; 5273 } 5274 5275 if (connecting_stop){ 5276 hci_send_cmd(&hci_le_create_connection_cancel); 5277 return true; 5278 } 5279 5280 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5281 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5282 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5283 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5284 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5285 return true; 5286 } 5287 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5288 if (periodic_sync_stop){ 5289 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5290 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5291 return true; 5292 } 5293 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5294 #endif 5295 #endif 5296 5297 #ifdef ENABLE_LE_PERIPHERAL 5298 if (advertising_stop){ 5299 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5300 if (hci_extended_advertising_supported()) { 5301 uint8_t advertising_stop_handle; 5302 if (advertising_stop_set != NULL){ 5303 advertising_stop_handle = advertising_stop_set->advertising_handle; 5304 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5305 } else { 5306 advertising_stop_handle = 0; 5307 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5308 } 5309 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5310 const uint16_t durations[] = { 0 }; 5311 const uint16_t max_events[] = { 0 }; 5312 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5313 } else 5314 #endif 5315 { 5316 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5317 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5318 } 5319 return true; 5320 } 5321 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5322 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5323 if (periodic_advertising_stop){ 5324 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5325 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5326 return true; 5327 } 5328 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5329 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5330 #endif 5331 5332 // Phase 3: modify 5333 5334 if (random_address_change){ 5335 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5336 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5337 if (hci_extended_advertising_supported()) { 5338 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5339 } 5340 #endif 5341 { 5342 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5343 } 5344 return true; 5345 } 5346 5347 #ifdef ENABLE_LE_CENTRAL 5348 if (hci_stack->le_scanning_param_update){ 5349 hci_stack->le_scanning_param_update = false; 5350 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5351 if (hci_extended_advertising_supported()){ 5352 // prepare arrays for all PHYs 5353 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5354 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5355 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5356 uint8_t scanning_phys = 1; // LE 1M PHY 5357 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5358 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5359 } else 5360 #endif 5361 { 5362 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5363 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5364 } 5365 return true; 5366 } 5367 #endif 5368 5369 #ifdef ENABLE_LE_PERIPHERAL 5370 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5371 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5372 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5373 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5374 if (hci_extended_advertising_supported()){ 5375 // map advertisment type to advertising event properties 5376 uint16_t adv_event_properties = 0; 5377 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5378 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5379 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5380 } 5381 hci_stack->le_advertising_set_in_current_command = 0; 5382 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5383 0, 5384 adv_event_properties, 5385 hci_stack->le_advertisements_interval_min, 5386 hci_stack->le_advertisements_interval_max, 5387 hci_stack->le_advertisements_channel_map, 5388 hci_stack->le_advertisements_own_addr_type, 5389 hci_stack->le_advertisements_direct_address_type, 5390 hci_stack->le_advertisements_direct_address, 5391 hci_stack->le_advertisements_filter_policy, 5392 0x7f, // tx power: no preference 5393 0x01, // primary adv phy: LE 1M 5394 0, // secondary adv max skip 5395 0, // secondary adv phy 5396 0, // adv sid 5397 0 // scan request notification 5398 ); 5399 } 5400 #endif 5401 { 5402 hci_send_cmd(&hci_le_set_advertising_parameters, 5403 hci_stack->le_advertisements_interval_min, 5404 hci_stack->le_advertisements_interval_max, 5405 hci_stack->le_advertisements_type, 5406 hci_stack->le_advertisements_own_addr_type, 5407 hci_stack->le_advertisements_direct_address_type, 5408 hci_stack->le_advertisements_direct_address, 5409 hci_stack->le_advertisements_channel_map, 5410 hci_stack->le_advertisements_filter_policy); 5411 } 5412 return true; 5413 } 5414 5415 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5416 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5417 uint8_t adv_data_clean[31]; 5418 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5419 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5420 hci_stack->le_advertisements_data_len); 5421 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5422 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5423 if (hci_extended_advertising_supported()){ 5424 hci_stack->le_advertising_set_in_current_command = 0; 5425 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5426 } else 5427 #endif 5428 { 5429 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5430 } 5431 return true; 5432 } 5433 5434 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5435 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5436 uint8_t scan_data_clean[31]; 5437 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5438 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5439 hci_stack->le_scan_response_data_len); 5440 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5441 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5442 if (hci_extended_advertising_supported()){ 5443 hci_stack->le_advertising_set_in_current_command = 0; 5444 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5445 } else 5446 #endif 5447 { 5448 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5449 } 5450 return true; 5451 } 5452 5453 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5454 if (hci_extended_advertising_supported()) { 5455 btstack_linked_list_iterator_t it; 5456 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5457 while (btstack_linked_list_iterator_has_next(&it)){ 5458 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5459 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5460 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5461 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5462 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5463 return true; 5464 } 5465 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5466 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5467 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5468 return true; 5469 } 5470 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5471 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5472 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5473 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5474 advertising_set->advertising_handle, 5475 advertising_set->extended_params.advertising_event_properties, 5476 advertising_set->extended_params.primary_advertising_interval_min, 5477 advertising_set->extended_params.primary_advertising_interval_max, 5478 advertising_set->extended_params.primary_advertising_channel_map, 5479 advertising_set->extended_params.own_address_type, 5480 advertising_set->extended_params.peer_address_type, 5481 advertising_set->extended_params.peer_address, 5482 advertising_set->extended_params.advertising_filter_policy, 5483 advertising_set->extended_params.advertising_tx_power, 5484 advertising_set->extended_params.primary_advertising_phy, 5485 advertising_set->extended_params.secondary_advertising_max_skip, 5486 advertising_set->extended_params.secondary_advertising_phy, 5487 advertising_set->extended_params.advertising_sid, 5488 advertising_set->extended_params.scan_request_notification_enable 5489 ); 5490 return true; 5491 } 5492 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5493 uint16_t pos = advertising_set->adv_data_pos; 5494 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5495 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5496 if ((operation & 0x02) != 0){ 5497 // last fragment or complete data 5498 operation |= 2; 5499 advertising_set->adv_data_pos = 0; 5500 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5501 } else { 5502 advertising_set->adv_data_pos += data_to_upload; 5503 } 5504 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5505 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5506 return true; 5507 } 5508 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5509 uint16_t pos = advertising_set->scan_data_pos; 5510 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5511 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5512 if ((operation & 0x02) != 0){ 5513 advertising_set->scan_data_pos = 0; 5514 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5515 } else { 5516 advertising_set->scan_data_pos += data_to_upload; 5517 } 5518 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5519 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5520 return true; 5521 } 5522 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5523 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5524 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5525 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5526 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5527 advertising_set->advertising_handle, 5528 advertising_set->periodic_params.periodic_advertising_interval_min, 5529 advertising_set->periodic_params.periodic_advertising_interval_max, 5530 advertising_set->periodic_params.periodic_advertising_properties); 5531 return true; 5532 } 5533 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5534 uint16_t pos = advertising_set->periodic_data_pos; 5535 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5536 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5537 if ((operation & 0x02) != 0){ 5538 // last fragment or complete data 5539 operation |= 2; 5540 advertising_set->periodic_data_pos = 0; 5541 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5542 } else { 5543 advertising_set->periodic_data_pos += data_to_upload; 5544 } 5545 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5546 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5547 return true; 5548 } 5549 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5550 } 5551 } 5552 #endif 5553 5554 #endif 5555 5556 #ifdef ENABLE_LE_CENTRAL 5557 // if connect with whitelist was active and is not cancelled yet, wait until next time 5558 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5559 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5560 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5561 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5562 #endif 5563 #endif 5564 5565 // LE Whitelist Management 5566 if (whitelist_modification_pending){ 5567 // add/remove entries 5568 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5569 while (btstack_linked_list_iterator_has_next(&lit)){ 5570 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5571 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5572 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5573 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5574 return true; 5575 } 5576 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5577 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5578 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5579 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5580 return true; 5581 } 5582 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5583 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5584 btstack_memory_whitelist_entry_free(entry); 5585 } 5586 } 5587 } 5588 5589 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5590 // LE Resolving List Management 5591 if (resolving_list_supported) { 5592 uint16_t i; 5593 switch (hci_stack->le_resolving_list_state) { 5594 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5595 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5596 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5597 return true; 5598 case LE_RESOLVING_LIST_READ_SIZE: 5599 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5600 hci_send_cmd(&hci_le_read_resolving_list_size); 5601 return true; 5602 case LE_RESOLVING_LIST_SEND_CLEAR: 5603 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5604 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5605 sizeof(hci_stack->le_resolving_list_add_entries)); 5606 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5607 sizeof(hci_stack->le_resolving_list_remove_entries)); 5608 hci_send_cmd(&hci_le_clear_resolving_list); 5609 return true; 5610 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5611 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5612 uint8_t offset = i >> 3; 5613 uint8_t mask = 1 << (i & 7); 5614 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5615 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5616 bd_addr_t peer_identity_addreses; 5617 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5618 sm_key_t peer_irk; 5619 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5620 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5621 5622 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5623 // trigger whitelist entry 'update' (work around for controller bug) 5624 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5625 while (btstack_linked_list_iterator_has_next(&lit)) { 5626 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5627 if (entry->address_type != peer_identity_addr_type) continue; 5628 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5629 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5630 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5631 } 5632 #endif 5633 5634 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5635 peer_identity_addreses); 5636 return true; 5637 } 5638 5639 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5640 5641 /* fall through */ 5642 5643 case LE_RESOLVING_LIST_ADD_ENTRIES: 5644 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5645 uint8_t offset = i >> 3; 5646 uint8_t mask = 1 << (i & 7); 5647 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5648 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5649 bd_addr_t peer_identity_addreses; 5650 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5651 sm_key_t peer_irk; 5652 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5653 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5654 const uint8_t *local_irk = gap_get_persistent_irk(); 5655 // command uses format specifier 'P' that stores 16-byte value without flip 5656 uint8_t local_irk_flipped[16]; 5657 uint8_t peer_irk_flipped[16]; 5658 reverse_128(local_irk, local_irk_flipped); 5659 reverse_128(peer_irk, peer_irk_flipped); 5660 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5661 peer_irk_flipped, local_irk_flipped); 5662 return true; 5663 } 5664 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5665 break; 5666 5667 default: 5668 break; 5669 } 5670 } 5671 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5672 #endif 5673 5674 #ifdef ENABLE_LE_CENTRAL 5675 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5676 // LE Whitelist Management 5677 if (periodic_list_modification_pending){ 5678 // add/remove entries 5679 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5680 while (btstack_linked_list_iterator_has_next(&lit)){ 5681 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5682 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5683 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5684 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5685 return true; 5686 } 5687 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5688 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5689 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5690 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address); 5691 return true; 5692 } 5693 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5694 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5695 btstack_memory_periodic_advertiser_list_entry_free(entry); 5696 } 5697 } 5698 } 5699 #endif 5700 #endif 5701 5702 // post-pone all actions until stack is fully working 5703 if (hci_stack->state != HCI_STATE_WORKING) return false; 5704 5705 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5706 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5707 5708 // Phase 4: restore state 5709 5710 #ifdef ENABLE_LE_CENTRAL 5711 // re-start scanning 5712 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5713 hci_stack->le_scanning_active = true; 5714 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5715 if (hci_extended_advertising_supported()){ 5716 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5717 } else 5718 #endif 5719 { 5720 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5721 } 5722 return true; 5723 } 5724 #endif 5725 5726 #ifdef ENABLE_LE_CENTRAL 5727 // re-start connecting 5728 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5729 bd_addr_t null_addr; 5730 memset(null_addr, 0, 6); 5731 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5732 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5733 hci_send_cmd(&hci_le_create_connection, 5734 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5735 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5736 1, // use whitelist 5737 0, // peer address type 5738 null_addr, // peer bd addr 5739 hci_stack->le_connection_own_addr_type, // our addr type: 5740 hci_stack->le_connection_interval_min, // conn interval min 5741 hci_stack->le_connection_interval_max, // conn interval max 5742 hci_stack->le_connection_latency, // conn latency 5743 hci_stack->le_supervision_timeout, // conn latency 5744 hci_stack->le_minimum_ce_length, // min ce length 5745 hci_stack->le_maximum_ce_length // max ce length 5746 ); 5747 return true; 5748 } 5749 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5750 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5751 switch(hci_stack->le_periodic_sync_request){ 5752 case LE_CONNECTING_DIRECT: 5753 case LE_CONNECTING_WHITELIST: 5754 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5755 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5756 hci_stack->le_periodic_sync_options, 5757 hci_stack->le_periodic_sync_advertising_sid, 5758 hci_stack->le_periodic_sync_advertiser_address_type, 5759 hci_stack->le_periodic_sync_advertiser_address, 5760 hci_stack->le_periodic_sync_skip, 5761 hci_stack->le_periodic_sync_timeout, 5762 hci_stack->le_periodic_sync_cte_type); 5763 return true; 5764 default: 5765 break; 5766 } 5767 } 5768 #endif 5769 #endif 5770 5771 #ifdef ENABLE_LE_PERIPHERAL 5772 // re-start advertising 5773 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5774 // check if advertisements should be enabled given 5775 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5776 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 5777 5778 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5779 if (hci_extended_advertising_supported()){ 5780 const uint8_t advertising_handles[] = { 0 }; 5781 const uint16_t durations[] = { 0 }; 5782 const uint16_t max_events[] = { 0 }; 5783 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5784 } else 5785 #endif 5786 { 5787 hci_send_cmd(&hci_le_set_advertise_enable, 1); 5788 } 5789 return true; 5790 } 5791 5792 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5793 if (hci_extended_advertising_supported()) { 5794 btstack_linked_list_iterator_t it; 5795 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5796 while (btstack_linked_list_iterator_has_next(&it)) { 5797 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 5798 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 5799 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 5800 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 5801 const uint16_t durations[] = { advertising_set->enable_timeout }; 5802 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 5803 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 5804 return true; 5805 } 5806 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5807 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 5808 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5809 uint8_t enable = 1; 5810 if (advertising_set->periodic_include_adi){ 5811 enable |= 2; 5812 } 5813 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 5814 return true; 5815 } 5816 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5817 } 5818 } 5819 #endif 5820 #endif 5821 5822 return false; 5823 } 5824 #endif 5825 5826 static bool hci_run_general_pending_commands(void){ 5827 btstack_linked_item_t * it; 5828 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 5829 hci_connection_t * connection = (hci_connection_t *) it; 5830 5831 switch(connection->state){ 5832 case SEND_CREATE_CONNECTION: 5833 switch(connection->address_type){ 5834 #ifdef ENABLE_CLASSIC 5835 case BD_ADDR_TYPE_ACL: 5836 log_info("sending hci_create_connection"); 5837 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 5838 break; 5839 #endif 5840 default: 5841 #ifdef ENABLE_BLE 5842 #ifdef ENABLE_LE_CENTRAL 5843 log_info("sending hci_le_create_connection"); 5844 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5845 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5846 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5847 if (hci_extended_advertising_supported()) { 5848 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 5849 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 5850 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 5851 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 5852 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 5853 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 5854 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 5855 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 5856 hci_send_cmd(&hci_le_extended_create_connection, 5857 0, // don't use whitelist 5858 hci_stack->le_connection_own_addr_type, // our addr type: 5859 connection->address_type, // peer address type 5860 connection->address, // peer bd addr 5861 1, // initiating PHY - 1M 5862 le_connection_scan_interval, // conn scan interval 5863 le_connection_scan_window, // conn scan windows 5864 le_connection_interval_min, // conn interval min 5865 le_connection_interval_max, // conn interval max 5866 le_connection_latency, // conn latency 5867 le_supervision_timeout, // conn latency 5868 le_minimum_ce_length, // min ce length 5869 le_maximum_ce_length // max ce length 5870 ); } 5871 else 5872 #endif 5873 { 5874 hci_send_cmd(&hci_le_create_connection, 5875 hci_stack->le_connection_scan_interval, // conn scan interval 5876 hci_stack->le_connection_scan_window, // conn scan windows 5877 0, // don't use whitelist 5878 connection->address_type, // peer address type 5879 connection->address, // peer bd addr 5880 hci_stack->le_connection_own_addr_type, // our addr type: 5881 hci_stack->le_connection_interval_min, // conn interval min 5882 hci_stack->le_connection_interval_max, // conn interval max 5883 hci_stack->le_connection_latency, // conn latency 5884 hci_stack->le_supervision_timeout, // conn latency 5885 hci_stack->le_minimum_ce_length, // min ce length 5886 hci_stack->le_maximum_ce_length // max ce length 5887 ); 5888 } 5889 connection->state = SENT_CREATE_CONNECTION; 5890 #endif 5891 #endif 5892 break; 5893 } 5894 return true; 5895 5896 #ifdef ENABLE_CLASSIC 5897 case RECEIVED_CONNECTION_REQUEST: 5898 connection->role = HCI_ROLE_SLAVE; 5899 if (connection->address_type == BD_ADDR_TYPE_ACL){ 5900 log_info("sending hci_accept_connection_request"); 5901 connection->state = ACCEPTED_CONNECTION_REQUEST; 5902 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 5903 return true; 5904 } 5905 break; 5906 #endif 5907 5908 #ifdef ENABLE_BLE 5909 #ifdef ENABLE_LE_CENTRAL 5910 case SEND_CANCEL_CONNECTION: 5911 connection->state = SENT_CANCEL_CONNECTION; 5912 hci_send_cmd(&hci_le_create_connection_cancel); 5913 return true; 5914 #endif 5915 #endif 5916 case SEND_DISCONNECT: 5917 connection->state = SENT_DISCONNECT; 5918 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5919 return true; 5920 5921 default: 5922 break; 5923 } 5924 5925 // no further commands if connection is about to get shut down 5926 if (connection->state == SENT_DISCONNECT) continue; 5927 5928 #ifdef ENABLE_CLASSIC 5929 5930 // Handling link key request requires remote supported features 5931 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 5932 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 5933 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 5934 5935 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 5936 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 5937 if (have_link_key && security_level_sufficient){ 5938 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 5939 } else { 5940 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 5941 } 5942 return true; 5943 } 5944 5945 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 5946 log_info("denying to pin request"); 5947 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 5948 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 5949 return true; 5950 } 5951 5952 // security assessment requires remote features 5953 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 5954 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 5955 hci_ssp_assess_security_on_io_cap_request(connection); 5956 // 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 5957 } 5958 5959 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 5960 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 5961 // set authentication requirements: 5962 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 5963 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 5964 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 5965 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 5966 authreq |= 1; 5967 } 5968 bool bonding = hci_stack->bondable; 5969 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 5970 // if we have received IO Cap Response, we're in responder role 5971 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5972 if (bonding && !remote_bonding){ 5973 log_info("Remote not bonding, dropping local flag"); 5974 bonding = false; 5975 } 5976 } 5977 if (bonding){ 5978 if (connection->bonding_flags & BONDING_DEDICATED){ 5979 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 5980 } else { 5981 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 5982 } 5983 } 5984 uint8_t have_oob_data = 0; 5985 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5986 if (connection->classic_oob_c_192 != NULL){ 5987 have_oob_data |= 1; 5988 } 5989 if (connection->classic_oob_c_256 != NULL){ 5990 have_oob_data |= 2; 5991 } 5992 #endif 5993 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 5994 return true; 5995 } 5996 5997 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 5998 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 5999 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6000 return true; 6001 } 6002 6003 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6004 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6005 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6006 const uint8_t zero[16] = { 0 }; 6007 const uint8_t * r_192 = zero; 6008 const uint8_t * c_192 = zero; 6009 const uint8_t * r_256 = zero; 6010 const uint8_t * c_256 = zero; 6011 // verify P-256 OOB 6012 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6013 c_256 = connection->classic_oob_c_256; 6014 if (connection->classic_oob_r_256 != NULL) { 6015 r_256 = connection->classic_oob_r_256; 6016 } 6017 } 6018 // verify P-192 OOB 6019 if ((connection->classic_oob_c_192 != NULL)) { 6020 c_192 = connection->classic_oob_c_192; 6021 if (connection->classic_oob_r_192 != NULL) { 6022 r_192 = connection->classic_oob_r_192; 6023 } 6024 } 6025 6026 // assess security 6027 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6028 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6029 if (need_level_4 && !can_reach_level_4){ 6030 log_info("Level 4 required, but not possible -> abort"); 6031 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6032 // send oob negative reply 6033 c_256 = NULL; 6034 c_192 = NULL; 6035 } 6036 6037 // Reply 6038 if (c_256 != zero) { 6039 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6040 } else if (c_192 != zero){ 6041 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6042 } else { 6043 hci_stack->classic_oob_con_handle = connection->con_handle; 6044 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6045 } 6046 return true; 6047 } 6048 #endif 6049 6050 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6051 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6052 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6053 return true; 6054 } 6055 6056 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6057 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6058 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6059 return true; 6060 } 6061 6062 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6063 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6064 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6065 return true; 6066 } 6067 6068 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6069 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6070 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6071 connection->state = SENT_DISCONNECT; 6072 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6073 return true; 6074 } 6075 6076 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6077 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6078 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6079 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6080 return true; 6081 } 6082 6083 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6084 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6085 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6086 return true; 6087 } 6088 6089 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6090 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6091 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6092 return true; 6093 } 6094 6095 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6096 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6097 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6098 return true; 6099 } 6100 6101 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6102 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6103 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6104 return true; 6105 } 6106 6107 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6108 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6109 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6110 return true; 6111 } 6112 #endif 6113 6114 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6115 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6116 #ifdef ENABLE_CLASSIC 6117 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6118 #endif 6119 if (connection->state != SENT_DISCONNECT){ 6120 connection->state = SENT_DISCONNECT; 6121 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6122 return true; 6123 } 6124 } 6125 6126 #ifdef ENABLE_CLASSIC 6127 uint16_t sniff_min_interval; 6128 switch (connection->sniff_min_interval){ 6129 case 0: 6130 break; 6131 case 0xffff: 6132 connection->sniff_min_interval = 0; 6133 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6134 return true; 6135 default: 6136 sniff_min_interval = connection->sniff_min_interval; 6137 connection->sniff_min_interval = 0; 6138 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6139 return true; 6140 } 6141 6142 if (connection->sniff_subrating_max_latency != 0xffff){ 6143 uint16_t max_latency = connection->sniff_subrating_max_latency; 6144 connection->sniff_subrating_max_latency = 0; 6145 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6146 return true; 6147 } 6148 6149 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6150 uint8_t service_type = (uint8_t) connection->qos_service_type; 6151 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6152 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); 6153 return true; 6154 } 6155 6156 if (connection->request_role != HCI_ROLE_INVALID){ 6157 hci_role_t role = connection->request_role; 6158 connection->request_role = HCI_ROLE_INVALID; 6159 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6160 return true; 6161 } 6162 #endif 6163 6164 if (connection->gap_connection_tasks != 0){ 6165 #ifdef ENABLE_CLASSIC 6166 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6167 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6168 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6169 return true; 6170 } 6171 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6172 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6173 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6174 return true; 6175 } 6176 #endif 6177 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6178 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6179 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6180 return true; 6181 } 6182 } 6183 6184 #ifdef ENABLE_BLE 6185 switch (connection->le_con_parameter_update_state){ 6186 // response to L2CAP CON PARAMETER UPDATE REQUEST 6187 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6188 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6189 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6190 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6191 0x0000, 0xffff); 6192 return true; 6193 case CON_PARAMETER_UPDATE_REPLY: 6194 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6195 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6196 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6197 0x0000, 0xffff); 6198 return true; 6199 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6200 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6201 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6202 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6203 return true; 6204 default: 6205 break; 6206 } 6207 if (connection->le_phy_update_all_phys != 0xffu){ 6208 uint8_t all_phys = connection->le_phy_update_all_phys; 6209 connection->le_phy_update_all_phys = 0xff; 6210 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); 6211 return true; 6212 } 6213 #endif 6214 } 6215 return false; 6216 } 6217 6218 static void hci_run(void){ 6219 6220 // stack state sub statemachines 6221 switch (hci_stack->state) { 6222 case HCI_STATE_INITIALIZING: 6223 hci_initializing_run(); 6224 break; 6225 case HCI_STATE_HALTING: 6226 hci_halting_run(); 6227 break; 6228 case HCI_STATE_FALLING_ASLEEP: 6229 hci_falling_asleep_run(); 6230 break; 6231 default: 6232 break; 6233 } 6234 6235 // allow to run after initialization to working transition 6236 if (hci_stack->state != HCI_STATE_WORKING){ 6237 return; 6238 } 6239 6240 bool done; 6241 6242 // send continuation fragments first, as they block the prepared packet buffer 6243 done = hci_run_acl_fragments(); 6244 if (done) return; 6245 6246 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6247 done = hci_run_iso_fragments(); 6248 if (done) return; 6249 #endif 6250 6251 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6252 // send host num completed packets next as they don't require num_cmd_packets > 0 6253 if (!hci_can_send_comand_packet_transport()) return; 6254 if (hci_stack->host_completed_packets){ 6255 hci_host_num_completed_packets(); 6256 return; 6257 } 6258 #endif 6259 6260 if (!hci_can_send_command_packet_now()) return; 6261 6262 // global/non-connection oriented commands 6263 6264 6265 #ifdef ENABLE_CLASSIC 6266 // general gap classic 6267 done = hci_run_general_gap_classic(); 6268 if (done) return; 6269 #endif 6270 6271 #ifdef ENABLE_BLE 6272 // general gap le 6273 done = hci_run_general_gap_le(); 6274 if (done) return; 6275 #endif 6276 6277 // send pending HCI commands 6278 hci_run_general_pending_commands(); 6279 } 6280 6281 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6282 // house-keeping 6283 6284 #ifdef ENABLE_CLASSIC 6285 bd_addr_t addr; 6286 hci_connection_t * conn; 6287 #endif 6288 #ifdef ENABLE_LE_CENTRAL 6289 uint8_t initiator_filter_policy; 6290 #endif 6291 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6292 uint8_t i; 6293 uint8_t num_cis; 6294 hci_con_handle_t cis_handle; 6295 uint8_t status; 6296 #endif 6297 6298 uint16_t opcode = little_endian_read_16(packet, 0); 6299 switch (opcode) { 6300 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6301 hci_stack->loopback_mode = packet[3]; 6302 break; 6303 6304 #ifdef ENABLE_CLASSIC 6305 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6306 reverse_bd_addr(&packet[3], addr); 6307 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6308 6309 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6310 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6311 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6312 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6313 } 6314 6315 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6316 if (!conn) { 6317 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6318 if (!conn) { 6319 // notify client that alloc failed 6320 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6321 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6322 } 6323 conn->state = SEND_CREATE_CONNECTION; 6324 conn->role = HCI_ROLE_MASTER; 6325 } 6326 6327 log_info("conn state %u", conn->state); 6328 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6329 switch (conn->state) { 6330 // if connection active exists 6331 case OPEN: 6332 // and OPEN, emit connection complete command 6333 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6334 // packet not sent to controller 6335 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6336 case RECEIVED_DISCONNECTION_COMPLETE: 6337 // create connection triggered in disconnect complete event, let's do it now 6338 break; 6339 case SEND_CREATE_CONNECTION: 6340 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6341 if (hci_classic_operation_active()){ 6342 return ERROR_CODE_SUCCESS; 6343 } 6344 #endif 6345 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6346 break; 6347 default: 6348 // otherwise, just ignore as it is already in the open process 6349 // packet not sent to controller 6350 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6351 } 6352 conn->state = SENT_CREATE_CONNECTION; 6353 6354 // track outgoing connection 6355 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6356 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6357 break; 6358 6359 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6360 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6361 // setup_synchronous_connection? Voice setting at offset 22 6362 // TODO: compare to current setting if sco connection already active 6363 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6364 break; 6365 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6366 // accept_synchronous_connection? Voice setting at offset 18 6367 // TODO: compare to current setting if sco connection already active 6368 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6369 // track outgoing connection 6370 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6371 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6372 break; 6373 #endif 6374 #endif 6375 6376 #ifdef ENABLE_BLE 6377 #ifdef ENABLE_LE_CENTRAL 6378 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6379 // white list used? 6380 initiator_filter_policy = packet[7]; 6381 switch (initiator_filter_policy) { 6382 case 0: 6383 // whitelist not used 6384 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6385 break; 6386 case 1: 6387 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6388 break; 6389 default: 6390 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6391 break; 6392 } 6393 // track outgoing connection 6394 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6395 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6396 break; 6397 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6398 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6399 break; 6400 #endif 6401 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6402 #ifdef ENABLE_LE_CENTRAL 6403 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6404 status = ERROR_CODE_SUCCESS; 6405 num_cis = packet[3]; 6406 // setup hci_iso_streams 6407 for (i=0;i<num_cis;i++){ 6408 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6409 status = hci_iso_stream_create(cis_handle); 6410 if (status != ERROR_CODE_SUCCESS) { 6411 break; 6412 } 6413 } 6414 // free structs on error 6415 if (status != ERROR_CODE_SUCCESS){ 6416 hci_iso_stream_requested_finalize(); 6417 return status; 6418 } 6419 break; 6420 #endif /* ENABLE_LE_CENTRAL */ 6421 #ifdef ENABLE_LE_PERIPHERAL 6422 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6423 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6424 status = hci_iso_stream_create(cis_handle); 6425 if (status != ERROR_CODE_SUCCESS){ 6426 return status; 6427 } 6428 break; 6429 #endif /* ENABLE_LE_PERIPHERAL */ 6430 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6431 #endif /* ENABLE_BLE */ 6432 default: 6433 break; 6434 } 6435 6436 hci_stack->num_cmd_packets--; 6437 6438 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6439 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6440 if (err != 0){ 6441 return ERROR_CODE_HARDWARE_FAILURE; 6442 } 6443 return ERROR_CODE_SUCCESS; 6444 } 6445 6446 // disconnect because of security block 6447 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6448 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6449 if (!connection) return; 6450 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6451 } 6452 6453 6454 // Configure Secure Simple Pairing 6455 6456 #ifdef ENABLE_CLASSIC 6457 6458 // enable will enable SSP during init 6459 void gap_ssp_set_enable(int enable){ 6460 hci_stack->ssp_enable = enable; 6461 } 6462 6463 static int hci_local_ssp_activated(void){ 6464 return gap_ssp_supported() && hci_stack->ssp_enable; 6465 } 6466 6467 // if set, BTstack will respond to io capability request using authentication requirement 6468 void gap_ssp_set_io_capability(int io_capability){ 6469 hci_stack->ssp_io_capability = io_capability; 6470 } 6471 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6472 hci_stack->ssp_authentication_requirement = authentication_requirement; 6473 } 6474 6475 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6476 void gap_ssp_set_auto_accept(int auto_accept){ 6477 hci_stack->ssp_auto_accept = auto_accept; 6478 } 6479 6480 void gap_secure_connections_enable(bool enable){ 6481 hci_stack->secure_connections_enable = enable; 6482 } 6483 bool gap_secure_connections_active(void){ 6484 return hci_stack->secure_connections_active; 6485 } 6486 6487 #endif 6488 6489 // va_list part of hci_send_cmd 6490 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6491 if (!hci_can_send_command_packet_now()){ 6492 log_error("hci_send_cmd called but cannot send packet now"); 6493 return ERROR_CODE_COMMAND_DISALLOWED; 6494 } 6495 6496 // for HCI INITIALIZATION 6497 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6498 hci_stack->last_cmd_opcode = cmd->opcode; 6499 6500 hci_reserve_packet_buffer(); 6501 uint8_t * packet = hci_stack->hci_packet_buffer; 6502 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6503 uint8_t status = hci_send_cmd_packet(packet, size); 6504 6505 // release packet buffer on error or for synchronous transport implementations 6506 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6507 hci_release_packet_buffer(); 6508 hci_emit_transport_packet_sent(); 6509 } 6510 6511 return status; 6512 } 6513 6514 /** 6515 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6516 */ 6517 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6518 va_list argptr; 6519 va_start(argptr, cmd); 6520 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6521 va_end(argptr); 6522 return status; 6523 } 6524 6525 // Create various non-HCI events. 6526 // TODO: generalize, use table similar to hci_create_command 6527 6528 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6529 // dump packet 6530 if (dump) { 6531 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6532 } 6533 6534 // dispatch to all event handlers 6535 btstack_linked_list_iterator_t it; 6536 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6537 while (btstack_linked_list_iterator_has_next(&it)){ 6538 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6539 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6540 } 6541 } 6542 6543 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6544 if (!hci_stack->acl_packet_handler) return; 6545 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6546 } 6547 6548 #ifdef ENABLE_CLASSIC 6549 static void hci_notify_if_sco_can_send_now(void){ 6550 // notify SCO sender if waiting 6551 if (!hci_stack->sco_waiting_for_can_send_now) return; 6552 if (hci_can_send_sco_packet_now()){ 6553 hci_stack->sco_waiting_for_can_send_now = 0; 6554 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6555 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6556 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6557 } 6558 } 6559 6560 // parsing end emitting has been merged to reduce code size 6561 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6562 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6563 6564 uint8_t * eir_data; 6565 ad_context_t context; 6566 const uint8_t * name; 6567 uint8_t name_len; 6568 6569 if (size < 3) return; 6570 6571 int event_type = hci_event_packet_get_type(packet); 6572 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6573 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6574 6575 switch (event_type){ 6576 case HCI_EVENT_INQUIRY_RESULT: 6577 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6578 if (size != (3 + (num_responses * 14))) return; 6579 break; 6580 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6581 if (size != 257) return; 6582 if (num_responses != 1) return; 6583 break; 6584 default: 6585 return; 6586 } 6587 6588 // event[1] is set at the end 6589 int i; 6590 for (i=0; i<num_responses;i++){ 6591 memset(event, 0, sizeof(event)); 6592 event[0] = GAP_EVENT_INQUIRY_RESULT; 6593 uint8_t event_size = 27; // if name is not set by EIR 6594 6595 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6596 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6597 (void)memcpy(&event[9], 6598 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6599 3); // class of device 6600 (void)memcpy(&event[12], 6601 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6602 2); // clock offset 6603 6604 switch (event_type){ 6605 case HCI_EVENT_INQUIRY_RESULT: 6606 // 14,15,16,17 = 0, size 18 6607 break; 6608 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6609 event[14] = 1; 6610 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6611 // 16,17 = 0, size 18 6612 break; 6613 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6614 event[14] = 1; 6615 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6616 // EIR packets only contain a single inquiry response 6617 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6618 name = NULL; 6619 // Iterate over EIR data 6620 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6621 uint8_t data_type = ad_iterator_get_data_type(&context); 6622 uint8_t data_size = ad_iterator_get_data_len(&context); 6623 const uint8_t * data = ad_iterator_get_data(&context); 6624 // Prefer Complete Local Name over Shortened Local Name 6625 switch (data_type){ 6626 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6627 if (name) continue; 6628 /* fall through */ 6629 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6630 name = data; 6631 name_len = data_size; 6632 break; 6633 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6634 if (data_size != 8) break; 6635 event[16] = 1; 6636 memcpy(&event[17], data, 8); 6637 break; 6638 default: 6639 break; 6640 } 6641 } 6642 if (name){ 6643 event[25] = 1; 6644 // truncate name if needed 6645 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6646 event[26] = len; 6647 (void)memcpy(&event[27], name, len); 6648 event_size += len; 6649 } 6650 break; 6651 default: 6652 return; 6653 } 6654 event[1] = event_size - 2; 6655 hci_emit_event(event, event_size, 1); 6656 } 6657 } 6658 #endif 6659 6660 void hci_emit_state(void){ 6661 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6662 uint8_t event[3]; 6663 event[0] = BTSTACK_EVENT_STATE; 6664 event[1] = sizeof(event) - 2u; 6665 event[2] = hci_stack->state; 6666 hci_emit_event(event, sizeof(event), 1); 6667 } 6668 6669 #ifdef ENABLE_CLASSIC 6670 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6671 uint8_t event[13]; 6672 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6673 event[1] = sizeof(event) - 2; 6674 event[2] = status; 6675 little_endian_store_16(event, 3, con_handle); 6676 reverse_bd_addr(address, &event[5]); 6677 event[11] = 1; // ACL connection 6678 event[12] = 0; // encryption disabled 6679 hci_emit_event(event, sizeof(event), 1); 6680 } 6681 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 6682 if (disable_l2cap_timeouts) return; 6683 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 6684 uint8_t event[4]; 6685 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 6686 event[1] = sizeof(event) - 2; 6687 little_endian_store_16(event, 2, conn->con_handle); 6688 hci_emit_event(event, sizeof(event), 1); 6689 } 6690 #endif 6691 6692 #ifdef ENABLE_BLE 6693 #ifdef ENABLE_LE_CENTRAL 6694 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){ 6695 uint8_t event[21]; 6696 event[0] = HCI_EVENT_LE_META; 6697 event[1] = sizeof(event) - 2u; 6698 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 6699 event[3] = status; 6700 little_endian_store_16(event, 4, con_handle); 6701 event[6] = 0; // TODO: role 6702 event[7] = address_type; 6703 reverse_bd_addr(address, &event[8]); 6704 little_endian_store_16(event, 14, 0); // interval 6705 little_endian_store_16(event, 16, 0); // latency 6706 little_endian_store_16(event, 18, 0); // supervision timeout 6707 event[20] = 0; // master clock accuracy 6708 hci_emit_event(event, sizeof(event), 1); 6709 } 6710 #endif 6711 #endif 6712 6713 static void hci_emit_transport_packet_sent(void){ 6714 // notify upper stack that it might be possible to send again 6715 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 6716 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 6717 } 6718 6719 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 6720 uint8_t event[6]; 6721 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 6722 event[1] = sizeof(event) - 2u; 6723 event[2] = 0; // status = OK 6724 little_endian_store_16(event, 3, con_handle); 6725 event[5] = reason; 6726 hci_emit_event(event, sizeof(event), 1); 6727 } 6728 6729 static void hci_emit_nr_connections_changed(void){ 6730 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 6731 uint8_t event[3]; 6732 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 6733 event[1] = sizeof(event) - 2u; 6734 event[2] = nr_hci_connections(); 6735 hci_emit_event(event, sizeof(event), 1); 6736 } 6737 6738 static void hci_emit_hci_open_failed(void){ 6739 log_info("BTSTACK_EVENT_POWERON_FAILED"); 6740 uint8_t event[2]; 6741 event[0] = BTSTACK_EVENT_POWERON_FAILED; 6742 event[1] = sizeof(event) - 2u; 6743 hci_emit_event(event, sizeof(event), 1); 6744 } 6745 6746 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 6747 log_info("hci_emit_dedicated_bonding_result %u ", status); 6748 uint8_t event[9]; 6749 int pos = 0; 6750 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 6751 event[pos++] = sizeof(event) - 2u; 6752 event[pos++] = status; 6753 reverse_bd_addr(address, &event[pos]); 6754 hci_emit_event(event, sizeof(event), 1); 6755 } 6756 6757 6758 #ifdef ENABLE_CLASSIC 6759 6760 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 6761 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 6762 uint8_t event[5]; 6763 int pos = 0; 6764 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 6765 event[pos++] = sizeof(event) - 2; 6766 little_endian_store_16(event, 2, con_handle); 6767 pos += 2; 6768 event[pos++] = level; 6769 hci_emit_event(event, sizeof(event), 1); 6770 } 6771 6772 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 6773 if (!connection) return LEVEL_0; 6774 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 6775 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 6776 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 6777 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 6778 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 6779 // LEVEL 4 always requires 128 bit encrytion key size 6780 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 6781 security_level = LEVEL_3; 6782 } 6783 return security_level; 6784 } 6785 6786 static void hci_emit_discoverable_enabled(uint8_t enabled){ 6787 log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled); 6788 uint8_t event[3]; 6789 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 6790 event[1] = sizeof(event) - 2; 6791 event[2] = enabled; 6792 hci_emit_event(event, sizeof(event), 1); 6793 } 6794 6795 // query if remote side supports eSCO 6796 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 6797 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6798 if (!connection) return false; 6799 return (connection->remote_supported_features[0] & 1) != 0; 6800 } 6801 6802 static bool hci_ssp_supported(hci_connection_t * connection){ 6803 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 6804 return (connection->bonding_flags & mask) == mask; 6805 } 6806 6807 // query if remote side supports SSP 6808 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 6809 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6810 if (!connection) return false; 6811 return hci_ssp_supported(connection) ? 1 : 0; 6812 } 6813 6814 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 6815 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 6816 } 6817 6818 /** 6819 * Check if remote supported features query has completed 6820 */ 6821 bool hci_remote_features_available(hci_con_handle_t handle){ 6822 hci_connection_t * connection = hci_connection_for_handle(handle); 6823 if (!connection) return false; 6824 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 6825 } 6826 6827 /** 6828 * Trigger remote supported features query 6829 */ 6830 6831 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 6832 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 6833 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6834 } 6835 } 6836 6837 void hci_remote_features_query(hci_con_handle_t con_handle){ 6838 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6839 if (!connection) return; 6840 hci_trigger_remote_features_for_connection(connection); 6841 hci_run(); 6842 } 6843 6844 // GAP API 6845 /** 6846 * @bbrief enable/disable bonding. default is enabled 6847 * @praram enabled 6848 */ 6849 void gap_set_bondable_mode(int enable){ 6850 hci_stack->bondable = enable ? 1 : 0; 6851 } 6852 /** 6853 * @brief Get bondable mode. 6854 * @return 1 if bondable 6855 */ 6856 int gap_get_bondable_mode(void){ 6857 return hci_stack->bondable; 6858 } 6859 6860 /** 6861 * @brief map link keys to security levels 6862 */ 6863 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 6864 switch (link_key_type){ 6865 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6866 return LEVEL_4; 6867 case COMBINATION_KEY: 6868 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6869 return LEVEL_3; 6870 default: 6871 return LEVEL_2; 6872 } 6873 } 6874 6875 /** 6876 * @brief map link keys to secure connection yes/no 6877 */ 6878 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 6879 switch (link_key_type){ 6880 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6881 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6882 return true; 6883 default: 6884 return false; 6885 } 6886 } 6887 6888 /** 6889 * @brief map link keys to authenticated 6890 */ 6891 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 6892 switch (link_key_type){ 6893 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 6894 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 6895 return true; 6896 default: 6897 return false; 6898 } 6899 } 6900 6901 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 6902 log_info("gap_mitm_protection_required_for_security_level %u", level); 6903 return level > LEVEL_2; 6904 } 6905 6906 /** 6907 * @brief get current security level 6908 */ 6909 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 6910 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6911 if (!connection) return LEVEL_0; 6912 return gap_security_level_for_connection(connection); 6913 } 6914 6915 /** 6916 * @brief request connection to device to 6917 * @result GAP_AUTHENTICATION_RESULT 6918 */ 6919 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 6920 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6921 if (!connection){ 6922 hci_emit_security_level(con_handle, LEVEL_0); 6923 return; 6924 } 6925 6926 btstack_assert(hci_is_le_connection(connection) == false); 6927 6928 // 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) 6929 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 6930 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 6931 requested_level = LEVEL_4; 6932 } 6933 6934 gap_security_level_t current_level = gap_security_level(con_handle); 6935 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 6936 requested_level, connection->requested_security_level, current_level); 6937 6938 // authentication active if authentication request was sent or planned level > 0 6939 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 6940 if (authentication_active){ 6941 // authentication already active 6942 if (connection->requested_security_level < requested_level){ 6943 // increase requested level as new level is higher 6944 // TODO: handle re-authentication when done 6945 connection->requested_security_level = requested_level; 6946 } 6947 } else { 6948 // no request active, notify if security sufficient 6949 if (requested_level <= current_level){ 6950 hci_emit_security_level(con_handle, current_level); 6951 return; 6952 } 6953 6954 // store request 6955 connection->requested_security_level = requested_level; 6956 6957 // request remote features if not already active 6958 hci_remote_features_query(con_handle); 6959 6960 // start to authenticate connection 6961 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 6962 hci_run(); 6963 } 6964 } 6965 6966 /** 6967 * @brief start dedicated bonding with device. disconnect after bonding 6968 * @param device 6969 * @param request MITM protection 6970 * @result GAP_DEDICATED_BONDING_COMPLETE 6971 */ 6972 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 6973 6974 // create connection state machine 6975 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 6976 6977 if (!connection){ 6978 return BTSTACK_MEMORY_ALLOC_FAILED; 6979 } 6980 6981 // delete linkn key 6982 gap_drop_link_key_for_bd_addr(device); 6983 6984 // configure LEVEL_2/3, dedicated bonding 6985 connection->state = SEND_CREATE_CONNECTION; 6986 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 6987 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 6988 connection->bonding_flags = BONDING_DEDICATED; 6989 6990 // wait for GAP Security Result and send GAP Dedicated Bonding complete 6991 6992 // handle: connnection failure (connection complete != ok) 6993 // handle: authentication failure 6994 // handle: disconnect on done 6995 6996 hci_run(); 6997 6998 return 0; 6999 } 7000 7001 void gap_set_local_name(const char * local_name){ 7002 hci_stack->local_name = local_name; 7003 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7004 // also update EIR if not set by user 7005 if (hci_stack->eir_data == NULL){ 7006 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7007 } 7008 hci_run(); 7009 } 7010 #endif 7011 7012 7013 #ifdef ENABLE_BLE 7014 7015 #ifdef ENABLE_LE_CENTRAL 7016 void gap_start_scan(void){ 7017 hci_stack->le_scanning_enabled = true; 7018 hci_run(); 7019 } 7020 7021 void gap_stop_scan(void){ 7022 hci_stack->le_scanning_enabled = false; 7023 hci_run(); 7024 } 7025 7026 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7027 hci_stack->le_scan_type = scan_type; 7028 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7029 hci_stack->le_scan_interval = scan_interval; 7030 hci_stack->le_scan_window = scan_window; 7031 hci_stack->le_scanning_param_update = true; 7032 hci_run(); 7033 } 7034 7035 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7036 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7037 } 7038 7039 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7040 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7041 if (!conn){ 7042 // disallow if le connection is already outgoing 7043 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7044 log_error("le connection already active"); 7045 return ERROR_CODE_COMMAND_DISALLOWED; 7046 } 7047 7048 log_info("gap_connect: no connection exists yet, creating context"); 7049 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7050 if (!conn){ 7051 // notify client that alloc failed 7052 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7053 log_info("gap_connect: failed to alloc hci_connection_t"); 7054 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7055 } 7056 7057 // set le connecting state 7058 if (hci_is_le_connection_type(addr_type)){ 7059 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7060 } 7061 7062 conn->state = SEND_CREATE_CONNECTION; 7063 log_info("gap_connect: send create connection next"); 7064 hci_run(); 7065 return ERROR_CODE_SUCCESS; 7066 } 7067 7068 if (!hci_is_le_connection(conn) || 7069 (conn->state == SEND_CREATE_CONNECTION) || 7070 (conn->state == SENT_CREATE_CONNECTION)) { 7071 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7072 log_error("gap_connect: classic connection or connect is already being created"); 7073 return GATT_CLIENT_IN_WRONG_STATE; 7074 } 7075 7076 // check if connection was just disconnected 7077 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7078 log_info("gap_connect: send create connection (again)"); 7079 conn->state = SEND_CREATE_CONNECTION; 7080 hci_run(); 7081 return ERROR_CODE_SUCCESS; 7082 } 7083 7084 log_info("gap_connect: context exists with state %u", conn->state); 7085 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7086 hci_run(); 7087 return ERROR_CODE_SUCCESS; 7088 } 7089 7090 // @assumption: only a single outgoing LE Connection exists 7091 static hci_connection_t * gap_get_outgoing_connection(void){ 7092 btstack_linked_item_t *it; 7093 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7094 hci_connection_t * conn = (hci_connection_t *) it; 7095 if (!hci_is_le_connection(conn)) continue; 7096 switch (conn->state){ 7097 case SEND_CREATE_CONNECTION: 7098 case SENT_CREATE_CONNECTION: 7099 case SENT_CANCEL_CONNECTION: 7100 return conn; 7101 default: 7102 break; 7103 }; 7104 } 7105 return NULL; 7106 } 7107 7108 uint8_t gap_connect_cancel(void){ 7109 hci_connection_t * conn = gap_get_outgoing_connection(); 7110 if (!conn) return 0; 7111 switch (conn->state){ 7112 case SEND_CREATE_CONNECTION: 7113 // skip sending create connection and emit event instead 7114 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7115 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7116 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7117 btstack_memory_hci_connection_free( conn ); 7118 break; 7119 case SENT_CREATE_CONNECTION: 7120 // request to send cancel connection 7121 conn->state = SEND_CANCEL_CONNECTION; 7122 hci_run(); 7123 break; 7124 default: 7125 break; 7126 } 7127 return 0; 7128 } 7129 7130 /** 7131 * @brief Set connection parameters for outgoing connections 7132 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7133 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7134 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7135 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7136 * @param conn_latency, default: 4 7137 * @param supervision_timeout (unit: 10ms), default: 720 ms 7138 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7139 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7140 */ 7141 7142 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7143 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7144 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7145 hci_stack->le_connection_scan_interval = conn_scan_interval; 7146 hci_stack->le_connection_scan_window = conn_scan_window; 7147 hci_stack->le_connection_interval_min = conn_interval_min; 7148 hci_stack->le_connection_interval_max = conn_interval_max; 7149 hci_stack->le_connection_latency = conn_latency; 7150 hci_stack->le_supervision_timeout = supervision_timeout; 7151 hci_stack->le_minimum_ce_length = min_ce_length; 7152 hci_stack->le_maximum_ce_length = max_ce_length; 7153 } 7154 #endif 7155 7156 /** 7157 * @brief Updates the connection parameters for a given LE connection 7158 * @param handle 7159 * @param conn_interval_min (unit: 1.25ms) 7160 * @param conn_interval_max (unit: 1.25ms) 7161 * @param conn_latency 7162 * @param supervision_timeout (unit: 10ms) 7163 * @return 0 if ok 7164 */ 7165 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7166 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7167 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7168 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7169 connection->le_conn_interval_min = conn_interval_min; 7170 connection->le_conn_interval_max = conn_interval_max; 7171 connection->le_conn_latency = conn_latency; 7172 connection->le_supervision_timeout = supervision_timeout; 7173 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7174 hci_run(); 7175 return 0; 7176 } 7177 7178 /** 7179 * @brief Request an update of the connection parameter for a given LE connection 7180 * @param handle 7181 * @param conn_interval_min (unit: 1.25ms) 7182 * @param conn_interval_max (unit: 1.25ms) 7183 * @param conn_latency 7184 * @param supervision_timeout (unit: 10ms) 7185 * @return 0 if ok 7186 */ 7187 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7188 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7189 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7190 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7191 connection->le_conn_interval_min = conn_interval_min; 7192 connection->le_conn_interval_max = conn_interval_max; 7193 connection->le_conn_latency = conn_latency; 7194 connection->le_supervision_timeout = supervision_timeout; 7195 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7196 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7197 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7198 return 0; 7199 } 7200 7201 #ifdef ENABLE_LE_PERIPHERAL 7202 7203 /** 7204 * @brief Set Advertisement Data 7205 * @param advertising_data_length 7206 * @param advertising_data (max 31 octets) 7207 * @note data is not copied, pointer has to stay valid 7208 */ 7209 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7210 hci_stack->le_advertisements_data_len = advertising_data_length; 7211 hci_stack->le_advertisements_data = advertising_data; 7212 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7213 hci_run(); 7214 } 7215 7216 /** 7217 * @brief Set Scan Response Data 7218 * @param advertising_data_length 7219 * @param advertising_data (max 31 octets) 7220 * @note data is not copied, pointer has to stay valid 7221 */ 7222 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7223 hci_stack->le_scan_response_data_len = scan_response_data_length; 7224 hci_stack->le_scan_response_data = scan_response_data; 7225 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7226 hci_run(); 7227 } 7228 7229 /** 7230 * @brief Set Advertisement Parameters 7231 * @param adv_int_min 7232 * @param adv_int_max 7233 * @param adv_type 7234 * @param direct_address_type 7235 * @param direct_address 7236 * @param channel_map 7237 * @param filter_policy 7238 * 7239 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7240 */ 7241 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7242 uint8_t direct_address_typ, bd_addr_t direct_address, 7243 uint8_t channel_map, uint8_t filter_policy) { 7244 7245 hci_stack->le_advertisements_interval_min = adv_int_min; 7246 hci_stack->le_advertisements_interval_max = adv_int_max; 7247 hci_stack->le_advertisements_type = adv_type; 7248 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7249 hci_stack->le_advertisements_channel_map = channel_map; 7250 hci_stack->le_advertisements_filter_policy = filter_policy; 7251 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7252 6); 7253 7254 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7255 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7256 hci_run(); 7257 } 7258 7259 /** 7260 * @brief Enable/Disable Advertisements 7261 * @param enabled 7262 */ 7263 void gap_advertisements_enable(int enabled){ 7264 if (enabled == 0){ 7265 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7266 } else { 7267 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7268 } 7269 hci_update_advertisements_enabled_for_current_roles(); 7270 hci_run(); 7271 } 7272 7273 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7274 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7275 btstack_linked_list_iterator_t it; 7276 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7277 while (btstack_linked_list_iterator_has_next(&it)){ 7278 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7279 if ( item->advertising_handle == advertising_handle ) { 7280 return item; 7281 } 7282 } 7283 return NULL; 7284 } 7285 7286 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7287 // find free advertisement handle 7288 uint8_t advertisement_handle; 7289 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7290 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7291 } 7292 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7293 // clear 7294 memset(storage, 0, sizeof(le_advertising_set_t)); 7295 // copy params 7296 storage->advertising_handle = advertisement_handle; 7297 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7298 // add to list 7299 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7300 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7301 *out_advertising_handle = advertisement_handle; 7302 // set tasks and start 7303 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7304 hci_run(); 7305 return ERROR_CODE_SUCCESS; 7306 } 7307 7308 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7309 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7310 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7311 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7312 // set tasks and start 7313 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7314 hci_run(); 7315 return ERROR_CODE_SUCCESS; 7316 } 7317 7318 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7319 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7320 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7321 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7322 return ERROR_CODE_SUCCESS; 7323 } 7324 7325 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7326 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7327 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7328 memcpy(advertising_set->random_address, random_address, 6); 7329 // set tasks and start 7330 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7331 hci_run(); 7332 return ERROR_CODE_SUCCESS; 7333 } 7334 7335 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7336 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7337 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7338 advertising_set->adv_data = advertising_data; 7339 advertising_set->adv_data_len = advertising_data_length; 7340 // set tasks and start 7341 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7342 hci_run(); 7343 return ERROR_CODE_SUCCESS; 7344 } 7345 7346 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){ 7347 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7348 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7349 advertising_set->scan_data = scan_response_data; 7350 advertising_set->scan_data_len = scan_response_data_length; 7351 // set tasks and start 7352 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7353 hci_run(); 7354 return ERROR_CODE_SUCCESS; 7355 } 7356 7357 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7358 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7359 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7360 advertising_set->enable_timeout = timeout; 7361 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7362 // set tasks and start 7363 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7364 hci_run(); 7365 return ERROR_CODE_SUCCESS; 7366 } 7367 7368 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7369 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7370 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7371 // set tasks and start 7372 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7373 hci_run(); 7374 return ERROR_CODE_SUCCESS; 7375 } 7376 7377 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7378 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7379 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7380 // set tasks and start 7381 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7382 hci_run(); 7383 return ERROR_CODE_SUCCESS; 7384 } 7385 7386 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7387 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7388 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7389 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7390 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7391 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7392 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7393 // set tasks and start 7394 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7395 hci_run(); 7396 return ERROR_CODE_SUCCESS; 7397 } 7398 7399 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7400 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7401 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7402 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7403 return ERROR_CODE_SUCCESS; 7404 } 7405 7406 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7407 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7408 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7409 advertising_set->periodic_data = periodic_data; 7410 advertising_set->periodic_data_len = periodic_data_length; 7411 // set tasks and start 7412 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7413 hci_run(); 7414 return ERROR_CODE_SUCCESS; 7415 } 7416 7417 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7418 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7419 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7420 // set tasks and start 7421 advertising_set->periodic_include_adi = include_adi; 7422 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7423 hci_run(); 7424 return ERROR_CODE_SUCCESS; 7425 } 7426 7427 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7428 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7429 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7430 // set tasks and start 7431 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7432 hci_run(); 7433 return ERROR_CODE_SUCCESS; 7434 } 7435 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7436 7437 #endif 7438 7439 #endif 7440 7441 void hci_le_set_own_address_type(uint8_t own_address_type){ 7442 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7443 if (own_address_type == hci_stack->le_own_addr_type) return; 7444 hci_stack->le_own_addr_type = own_address_type; 7445 7446 #ifdef ENABLE_LE_PERIPHERAL 7447 // update advertisement parameters, too 7448 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7449 hci_run(); 7450 #endif 7451 #ifdef ENABLE_LE_CENTRAL 7452 // note: we don't update scan parameters or modify ongoing connection attempts 7453 #endif 7454 } 7455 7456 void hci_le_random_address_set(const bd_addr_t random_address){ 7457 memcpy(hci_stack->le_random_address, random_address, 6); 7458 hci_stack->le_random_address_set = true; 7459 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7460 hci_run(); 7461 } 7462 7463 #endif 7464 7465 uint8_t gap_disconnect(hci_con_handle_t handle){ 7466 hci_connection_t * conn = hci_connection_for_handle(handle); 7467 if (!conn){ 7468 hci_emit_disconnection_complete(handle, 0); 7469 return 0; 7470 } 7471 // ignore if already disconnected 7472 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7473 return 0; 7474 } 7475 conn->state = SEND_DISCONNECT; 7476 hci_run(); 7477 return 0; 7478 } 7479 7480 int gap_read_rssi(hci_con_handle_t con_handle){ 7481 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7482 if (hci_connection == NULL) return 0; 7483 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7484 hci_run(); 7485 return 1; 7486 } 7487 7488 /** 7489 * @brief Get connection type 7490 * @param con_handle 7491 * @result connection_type 7492 */ 7493 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7494 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7495 if (!conn) return GAP_CONNECTION_INVALID; 7496 switch (conn->address_type){ 7497 case BD_ADDR_TYPE_LE_PUBLIC: 7498 case BD_ADDR_TYPE_LE_RANDOM: 7499 return GAP_CONNECTION_LE; 7500 case BD_ADDR_TYPE_SCO: 7501 return GAP_CONNECTION_SCO; 7502 case BD_ADDR_TYPE_ACL: 7503 return GAP_CONNECTION_ACL; 7504 default: 7505 return GAP_CONNECTION_INVALID; 7506 } 7507 } 7508 7509 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7510 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7511 if (!conn) return HCI_ROLE_INVALID; 7512 return (hci_role_t) conn->role; 7513 } 7514 7515 7516 #ifdef ENABLE_CLASSIC 7517 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7518 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7519 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7520 conn->request_role = role; 7521 hci_run(); 7522 return ERROR_CODE_SUCCESS; 7523 } 7524 #endif 7525 7526 #ifdef ENABLE_BLE 7527 7528 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){ 7529 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7530 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7531 7532 conn->le_phy_update_all_phys = all_phys; 7533 conn->le_phy_update_tx_phys = tx_phys; 7534 conn->le_phy_update_rx_phys = rx_phys; 7535 conn->le_phy_update_phy_options = phy_options; 7536 7537 hci_run(); 7538 7539 return 0; 7540 } 7541 7542 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7543 // check if already in list 7544 btstack_linked_list_iterator_t it; 7545 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7546 while (btstack_linked_list_iterator_has_next(&it)) { 7547 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7548 if (entry->address_type != address_type) { 7549 continue; 7550 } 7551 if (memcmp(entry->address, address, 6) != 0) { 7552 continue; 7553 } 7554 // disallow if already scheduled to add 7555 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7556 return ERROR_CODE_COMMAND_DISALLOWED; 7557 } 7558 // still on controller, but scheduled to remove -> re-add 7559 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7560 return ERROR_CODE_SUCCESS; 7561 } 7562 // alloc and add to list 7563 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7564 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7565 entry->address_type = address_type; 7566 (void)memcpy(entry->address, address, 6); 7567 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7568 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7569 return ERROR_CODE_SUCCESS; 7570 } 7571 7572 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7573 btstack_linked_list_iterator_t it; 7574 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7575 while (btstack_linked_list_iterator_has_next(&it)){ 7576 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7577 if (entry->address_type != address_type) { 7578 continue; 7579 } 7580 if (memcmp(entry->address, address, 6) != 0) { 7581 continue; 7582 } 7583 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7584 // remove from controller if already present 7585 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7586 } else { 7587 // directly remove entry from whitelist 7588 btstack_linked_list_iterator_remove(&it); 7589 btstack_memory_whitelist_entry_free(entry); 7590 } 7591 return ERROR_CODE_SUCCESS; 7592 } 7593 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7594 } 7595 7596 static void hci_whitelist_clear(void){ 7597 btstack_linked_list_iterator_t it; 7598 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7599 while (btstack_linked_list_iterator_has_next(&it)){ 7600 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7601 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7602 // remove from controller if already present 7603 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7604 continue; 7605 } 7606 // directly remove entry from whitelist 7607 btstack_linked_list_iterator_remove(&it); 7608 btstack_memory_whitelist_entry_free(entry); 7609 } 7610 } 7611 7612 // free all entries unconditionally 7613 static void hci_whitelist_free(void){ 7614 btstack_linked_list_iterator_t lit; 7615 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7616 while (btstack_linked_list_iterator_has_next(&lit)){ 7617 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7618 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7619 btstack_memory_whitelist_entry_free(entry); 7620 } 7621 } 7622 7623 /** 7624 * @brief Clear Whitelist 7625 * @return 0 if ok 7626 */ 7627 uint8_t gap_whitelist_clear(void){ 7628 hci_whitelist_clear(); 7629 hci_run(); 7630 return ERROR_CODE_SUCCESS; 7631 } 7632 7633 /** 7634 * @brief Add Device to Whitelist 7635 * @param address_typ 7636 * @param address 7637 * @return 0 if ok 7638 */ 7639 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7640 uint8_t status = hci_whitelist_add(address_type, address); 7641 if (status){ 7642 return status; 7643 } 7644 hci_run(); 7645 return ERROR_CODE_SUCCESS; 7646 } 7647 7648 /** 7649 * @brief Remove Device from Whitelist 7650 * @param address_typ 7651 * @param address 7652 * @return 0 if ok 7653 */ 7654 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7655 uint8_t status = hci_whitelist_remove(address_type, address); 7656 if (status){ 7657 return status; 7658 } 7659 hci_run(); 7660 return ERROR_CODE_SUCCESS; 7661 } 7662 7663 #ifdef ENABLE_LE_CENTRAL 7664 /** 7665 * @brief Connect with Whitelist 7666 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 7667 * @return - if ok 7668 */ 7669 uint8_t gap_connect_with_whitelist(void){ 7670 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7671 return ERROR_CODE_COMMAND_DISALLOWED; 7672 } 7673 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7674 hci_run(); 7675 return ERROR_CODE_SUCCESS; 7676 } 7677 7678 /** 7679 * @brief Auto Connection Establishment - Start Connecting to device 7680 * @param address_typ 7681 * @param address 7682 * @return 0 if ok 7683 */ 7684 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 7685 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7686 return ERROR_CODE_COMMAND_DISALLOWED; 7687 } 7688 7689 uint8_t status = hci_whitelist_add(address_type, address); 7690 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 7691 return status; 7692 } 7693 7694 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 7695 7696 hci_run(); 7697 return ERROR_CODE_SUCCESS; 7698 } 7699 7700 /** 7701 * @brief Auto Connection Establishment - Stop Connecting to device 7702 * @param address_typ 7703 * @param address 7704 * @return 0 if ok 7705 */ 7706 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 7707 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 7708 return ERROR_CODE_COMMAND_DISALLOWED; 7709 } 7710 7711 hci_whitelist_remove(address_type, address); 7712 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 7713 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7714 } 7715 hci_run(); 7716 return 0; 7717 } 7718 7719 /** 7720 * @brief Auto Connection Establishment - Stop everything 7721 * @note Convenience function to stop all active auto connection attempts 7722 */ 7723 uint8_t gap_auto_connection_stop_all(void){ 7724 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 7725 return ERROR_CODE_COMMAND_DISALLOWED; 7726 } 7727 hci_whitelist_clear(); 7728 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7729 hci_run(); 7730 return ERROR_CODE_SUCCESS; 7731 } 7732 7733 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 7734 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7735 if (!conn) return 0; 7736 return conn->le_connection_interval; 7737 } 7738 #endif 7739 #endif 7740 7741 #ifdef ENABLE_CLASSIC 7742 /** 7743 * @brief Set Extended Inquiry Response data 7744 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 7745 * @note has to be done before stack starts up 7746 */ 7747 void gap_set_extended_inquiry_response(const uint8_t * data){ 7748 hci_stack->eir_data = data; 7749 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7750 hci_run(); 7751 } 7752 7753 /** 7754 * @brief Start GAP Classic Inquiry 7755 * @param duration in 1.28s units 7756 * @return 0 if ok 7757 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 7758 */ 7759 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 7760 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7761 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7762 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 7763 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7764 } 7765 hci_stack->inquiry_state = duration_in_1280ms_units; 7766 hci_stack->inquiry_max_period_length = 0; 7767 hci_stack->inquiry_min_period_length = 0; 7768 hci_run(); 7769 return 0; 7770 } 7771 7772 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 7773 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 7774 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7775 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7776 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7777 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7778 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 7779 7780 hci_stack->inquiry_state = duration; 7781 hci_stack->inquiry_max_period_length = max_period_length; 7782 hci_stack->inquiry_min_period_length = min_period_length; 7783 hci_run(); 7784 return 0; 7785 } 7786 7787 /** 7788 * @brief Stop GAP Classic Inquiry 7789 * @return 0 if ok 7790 */ 7791 int gap_inquiry_stop(void){ 7792 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 7793 // emit inquiry complete event, before it even started 7794 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 7795 hci_emit_event(event, sizeof(event), 1); 7796 return 0; 7797 } 7798 switch (hci_stack->inquiry_state){ 7799 case GAP_INQUIRY_STATE_ACTIVE: 7800 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 7801 hci_run(); 7802 return ERROR_CODE_SUCCESS; 7803 case GAP_INQUIRY_STATE_PERIODIC: 7804 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 7805 hci_run(); 7806 return ERROR_CODE_SUCCESS; 7807 default: 7808 return ERROR_CODE_COMMAND_DISALLOWED; 7809 } 7810 } 7811 7812 void gap_inquiry_set_lap(uint32_t lap){ 7813 hci_stack->inquiry_lap = lap; 7814 } 7815 7816 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 7817 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 7818 hci_stack->inquiry_scan_window = inquiry_scan_window; 7819 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 7820 hci_run(); 7821 } 7822 7823 7824 /** 7825 * @brief Remote Name Request 7826 * @param addr 7827 * @param page_scan_repetition_mode 7828 * @param clock_offset only used when bit 15 is set 7829 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 7830 */ 7831 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 7832 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7833 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 7834 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 7835 hci_stack->remote_name_clock_offset = clock_offset; 7836 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 7837 hci_run(); 7838 return 0; 7839 } 7840 7841 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 7842 hci_stack->gap_pairing_state = state; 7843 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 7844 hci_run(); 7845 return 0; 7846 } 7847 7848 /** 7849 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 7850 * @param addr 7851 * @param pin_data 7852 * @param pin_len 7853 * @return 0 if ok 7854 */ 7855 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 7856 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7857 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 7858 hci_stack->gap_pairing_pin_len = pin_len; 7859 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 7860 } 7861 7862 /** 7863 * @brief Legacy Pairing Pin Code Response 7864 * @param addr 7865 * @param pin 7866 * @return 0 if ok 7867 */ 7868 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 7869 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, strlen(pin)); 7870 } 7871 7872 /** 7873 * @brief Abort Legacy Pairing 7874 * @param addr 7875 * @param pin 7876 * @return 0 if ok 7877 */ 7878 int gap_pin_code_negative(bd_addr_t addr){ 7879 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7880 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 7881 } 7882 7883 /** 7884 * @brief SSP Passkey Response 7885 * @param addr 7886 * @param passkey 7887 * @return 0 if ok 7888 */ 7889 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 7890 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7891 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 7892 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 7893 } 7894 7895 /** 7896 * @brief Abort SSP Passkey Entry/Pairing 7897 * @param addr 7898 * @param pin 7899 * @return 0 if ok 7900 */ 7901 int gap_ssp_passkey_negative(const bd_addr_t addr){ 7902 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7903 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 7904 } 7905 7906 /** 7907 * @brief Accept SSP Numeric Comparison 7908 * @param addr 7909 * @param passkey 7910 * @return 0 if ok 7911 */ 7912 int gap_ssp_confirmation_response(const bd_addr_t addr){ 7913 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7914 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 7915 } 7916 7917 /** 7918 * @brief Abort SSP Numeric Comparison/Pairing 7919 * @param addr 7920 * @param pin 7921 * @return 0 if ok 7922 */ 7923 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 7924 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 7925 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 7926 } 7927 7928 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 7929 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 7930 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7931 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7932 connectionSetAuthenticationFlags(conn, flag); 7933 hci_run(); 7934 return ERROR_CODE_SUCCESS; 7935 } 7936 #endif 7937 7938 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 7939 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 7940 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 7941 } 7942 7943 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 7944 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 7945 } 7946 #endif 7947 7948 #ifdef ENABLE_CLASSIC_PAIRING_OOB 7949 /** 7950 * @brief Report Remote OOB Data 7951 * @param bd_addr 7952 * @param c_192 Simple Pairing Hash C derived from P-192 public key 7953 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 7954 * @param c_256 Simple Pairing Hash C derived from P-256 public key 7955 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 7956 */ 7957 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){ 7958 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7959 if (connection == NULL) { 7960 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7961 } 7962 connection->classic_oob_c_192 = c_192; 7963 connection->classic_oob_r_192 = r_192; 7964 7965 // ignore P-256 if not supported by us 7966 if (hci_stack->secure_connections_active){ 7967 connection->classic_oob_c_256 = c_256; 7968 connection->classic_oob_r_256 = r_256; 7969 } 7970 7971 return ERROR_CODE_SUCCESS; 7972 } 7973 /** 7974 * @brief Generate new OOB data 7975 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 7976 */ 7977 void gap_ssp_generate_oob_data(void){ 7978 hci_stack->classic_read_local_oob_data = true; 7979 hci_run(); 7980 } 7981 7982 #endif 7983 7984 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 7985 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 7986 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7987 if (connection == NULL) { 7988 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7989 } 7990 7991 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 7992 connection->link_key_type = type; 7993 7994 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 7995 } 7996 7997 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 7998 /** 7999 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8000 * @param inquiry_mode see bluetooth_defines.h 8001 */ 8002 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8003 hci_stack->inquiry_mode = inquiry_mode; 8004 } 8005 8006 /** 8007 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8008 */ 8009 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8010 hci_stack->sco_voice_setting = voice_setting; 8011 } 8012 8013 /** 8014 * @brief Get SCO Voice Setting 8015 * @return current voice setting 8016 */ 8017 uint16_t hci_get_sco_voice_setting(void){ 8018 return hci_stack->sco_voice_setting; 8019 } 8020 8021 static int hci_have_usb_transport(void){ 8022 if (!hci_stack->hci_transport) return 0; 8023 const char * transport_name = hci_stack->hci_transport->name; 8024 if (!transport_name) return 0; 8025 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8026 } 8027 8028 /** @brief Get SCO packet length for current SCO Voice setting 8029 * @note Using SCO packets of the exact length is required for USB transfer 8030 * @return Length of SCO packets in bytes (not audio frames) 8031 */ 8032 uint16_t hci_get_sco_packet_length(void){ 8033 uint16_t sco_packet_length = 0; 8034 8035 #ifdef ENABLE_SCO_OVER_HCI 8036 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8037 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8038 8039 if (hci_have_usb_transport()){ 8040 // see Core Spec for H2 USB Transfer. 8041 // 3 byte SCO header + 24 bytes per connection 8042 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8043 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8044 } else { 8045 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8046 sco_packet_length = 3 + 60 * multiplier; 8047 // assert that it still fits inside an SCO buffer 8048 if (sco_packet_length > hci_stack->sco_data_packet_length){ 8049 sco_packet_length = 3 + 60; 8050 } 8051 } 8052 #endif 8053 8054 #ifdef HAVE_SCO_TRANSPORT 8055 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8056 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8057 sco_packet_length = 3 + 60 * multiplier; 8058 #endif 8059 return sco_packet_length; 8060 } 8061 8062 /** 8063 * @brief Sets the master/slave policy 8064 * @param policy (0: attempt to become master, 1: let connecting device decide) 8065 */ 8066 void hci_set_master_slave_policy(uint8_t policy){ 8067 hci_stack->master_slave_policy = policy; 8068 } 8069 8070 #endif 8071 8072 HCI_STATE hci_get_state(void){ 8073 return hci_stack->state; 8074 } 8075 8076 #ifdef ENABLE_CLASSIC 8077 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8078 hci_stack->gap_classic_accept_callback = accept_callback; 8079 } 8080 #endif 8081 8082 /** 8083 * @brief Set callback for Bluetooth Hardware Error 8084 */ 8085 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8086 hci_stack->hardware_error_callback = fn; 8087 } 8088 8089 void hci_disconnect_all(void){ 8090 btstack_linked_list_iterator_t it; 8091 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8092 while (btstack_linked_list_iterator_has_next(&it)){ 8093 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8094 if (con->state == SENT_DISCONNECT) continue; 8095 con->state = SEND_DISCONNECT; 8096 } 8097 hci_run(); 8098 } 8099 8100 uint16_t hci_get_manufacturer(void){ 8101 return hci_stack->manufacturer; 8102 } 8103 8104 #ifdef ENABLE_BLE 8105 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8106 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8107 if (!hci_con) return NULL; 8108 return &hci_con->sm_connection; 8109 } 8110 8111 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8112 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8113 #endif 8114 8115 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8116 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8117 if (hci_connection == NULL) return 0; 8118 if (hci_is_le_connection(hci_connection)){ 8119 #ifdef ENABLE_BLE 8120 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8121 if (sm_conn->sm_connection_encrypted) { 8122 return sm_conn->sm_actual_encryption_key_size; 8123 } 8124 #endif 8125 } else { 8126 #ifdef ENABLE_CLASSIC 8127 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8128 return hci_connection->encryption_key_size; 8129 } 8130 #endif 8131 } 8132 return 0; 8133 } 8134 8135 bool gap_authenticated(hci_con_handle_t con_handle){ 8136 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8137 if (hci_connection == NULL) return false; 8138 8139 switch (hci_connection->address_type){ 8140 #ifdef ENABLE_BLE 8141 case BD_ADDR_TYPE_LE_PUBLIC: 8142 case BD_ADDR_TYPE_LE_RANDOM: 8143 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8144 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8145 #endif 8146 #ifdef ENABLE_CLASSIC 8147 case BD_ADDR_TYPE_SCO: 8148 case BD_ADDR_TYPE_ACL: 8149 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8150 #endif 8151 default: 8152 return false; 8153 } 8154 } 8155 8156 bool gap_secure_connection(hci_con_handle_t con_handle){ 8157 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8158 if (hci_connection == NULL) return 0; 8159 8160 switch (hci_connection->address_type){ 8161 #ifdef ENABLE_BLE 8162 case BD_ADDR_TYPE_LE_PUBLIC: 8163 case BD_ADDR_TYPE_LE_RANDOM: 8164 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8165 return hci_connection->sm_connection.sm_connection_sc != 0; 8166 #endif 8167 #ifdef ENABLE_CLASSIC 8168 case BD_ADDR_TYPE_SCO: 8169 case BD_ADDR_TYPE_ACL: 8170 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8171 #endif 8172 default: 8173 return false; 8174 } 8175 } 8176 8177 bool gap_bonded(hci_con_handle_t con_handle){ 8178 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8179 if (hci_connection == NULL) return 0; 8180 8181 #ifdef ENABLE_CLASSIC 8182 link_key_t link_key; 8183 link_key_type_t link_key_type; 8184 #endif 8185 switch (hci_connection->address_type){ 8186 #ifdef ENABLE_BLE 8187 case BD_ADDR_TYPE_LE_PUBLIC: 8188 case BD_ADDR_TYPE_LE_RANDOM: 8189 return hci_connection->sm_connection.sm_le_db_index >= 0; 8190 #endif 8191 #ifdef ENABLE_CLASSIC 8192 case BD_ADDR_TYPE_SCO: 8193 case BD_ADDR_TYPE_ACL: 8194 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8195 #endif 8196 default: 8197 return false; 8198 } 8199 } 8200 8201 #ifdef ENABLE_BLE 8202 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8203 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8204 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8205 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8206 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8207 return sm_conn->sm_connection_authorization_state; 8208 } 8209 #endif 8210 8211 #ifdef ENABLE_CLASSIC 8212 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){ 8213 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8214 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8215 conn->sniff_min_interval = sniff_min_interval; 8216 conn->sniff_max_interval = sniff_max_interval; 8217 conn->sniff_attempt = sniff_attempt; 8218 conn->sniff_timeout = sniff_timeout; 8219 hci_run(); 8220 return 0; 8221 } 8222 8223 /** 8224 * @brief Exit Sniff mode 8225 * @param con_handle 8226 @ @return 0 if ok 8227 */ 8228 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8229 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8230 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8231 conn->sniff_min_interval = 0xffff; 8232 hci_run(); 8233 return 0; 8234 } 8235 8236 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){ 8237 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8238 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8239 conn->sniff_subrating_max_latency = max_latency; 8240 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8241 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8242 hci_run(); 8243 return ERROR_CODE_SUCCESS; 8244 } 8245 8246 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){ 8247 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8248 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8249 conn->qos_service_type = service_type; 8250 conn->qos_token_rate = token_rate; 8251 conn->qos_peak_bandwidth = peak_bandwidth; 8252 conn->qos_latency = latency; 8253 conn->qos_delay_variation = delay_variation; 8254 hci_run(); 8255 return ERROR_CODE_SUCCESS; 8256 } 8257 8258 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8259 hci_stack->new_page_scan_interval = page_scan_interval; 8260 hci_stack->new_page_scan_window = page_scan_window; 8261 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8262 hci_run(); 8263 } 8264 8265 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8266 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8267 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8268 hci_run(); 8269 } 8270 8271 void gap_set_page_timeout(uint16_t page_timeout){ 8272 hci_stack->page_timeout = page_timeout; 8273 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8274 hci_run(); 8275 } 8276 8277 #endif 8278 8279 void hci_halting_defer(void){ 8280 if (hci_stack->state != HCI_STATE_HALTING) return; 8281 switch (hci_stack->substate){ 8282 case HCI_HALTING_READY_FOR_CLOSE: 8283 hci_stack->substate = HCI_HALTING_DEFER_CLOSE; 8284 break; 8285 default: 8286 break; 8287 } 8288 } 8289 8290 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8291 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8292 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8293 if (le_device_db_index >= le_device_db_max_count()) return; 8294 uint8_t offset = le_device_db_index >> 3; 8295 uint8_t mask = 1 << (le_device_db_index & 7); 8296 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8297 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8298 // note: go back to remove entries, otherwise, a remove + add will skip the add 8299 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8300 } 8301 } 8302 8303 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8304 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8305 if (le_device_db_index >= le_device_db_max_count()) return; 8306 uint8_t offset = le_device_db_index >> 3; 8307 uint8_t mask = 1 << (le_device_db_index & 7); 8308 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8309 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8310 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8311 } 8312 } 8313 8314 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8315 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8316 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8317 } 8318 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8319 // restart le resolving list update 8320 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8321 } 8322 return ERROR_CODE_SUCCESS; 8323 } 8324 #endif 8325 8326 #ifdef ENABLE_BLE 8327 #ifdef ENABLE_LE_CENTRAL 8328 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8329 8330 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8331 // check if already in list 8332 btstack_linked_list_iterator_t it; 8333 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8334 while (btstack_linked_list_iterator_has_next(&it)) { 8335 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8336 if (entry->sid != advertising_sid) { 8337 continue; 8338 } 8339 if (entry->address_type != address_type) { 8340 continue; 8341 } 8342 if (memcmp(entry->address, address, 6) != 0) { 8343 continue; 8344 } 8345 // disallow if already scheduled to add 8346 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8347 return ERROR_CODE_COMMAND_DISALLOWED; 8348 } 8349 // still on controller, but scheduled to remove -> re-add 8350 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8351 return ERROR_CODE_SUCCESS; 8352 } 8353 // alloc and add to list 8354 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8355 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8356 entry->sid = advertising_sid; 8357 entry->address_type = address_type; 8358 (void)memcpy(entry->address, address, 6); 8359 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8360 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8361 return ERROR_CODE_SUCCESS; 8362 } 8363 8364 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8365 btstack_linked_list_iterator_t it; 8366 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8367 while (btstack_linked_list_iterator_has_next(&it)){ 8368 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8369 if (entry->sid != advertising_sid) { 8370 continue; 8371 } 8372 if (entry->address_type != address_type) { 8373 continue; 8374 } 8375 if (memcmp(entry->address, address, 6) != 0) { 8376 continue; 8377 } 8378 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8379 // remove from controller if already present 8380 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8381 } else { 8382 // directly remove entry from whitelist 8383 btstack_linked_list_iterator_remove(&it); 8384 btstack_memory_periodic_advertiser_list_entry_free(entry); 8385 } 8386 return ERROR_CODE_SUCCESS; 8387 } 8388 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8389 } 8390 8391 static void hci_periodic_advertiser_list_clear(void){ 8392 btstack_linked_list_iterator_t it; 8393 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8394 while (btstack_linked_list_iterator_has_next(&it)){ 8395 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8396 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8397 // remove from controller if already present 8398 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8399 continue; 8400 } 8401 // directly remove entry from whitelist 8402 btstack_linked_list_iterator_remove(&it); 8403 btstack_memory_periodic_advertiser_list_entry_free(entry); 8404 } 8405 } 8406 8407 // free all entries unconditionally 8408 static void hci_periodic_advertiser_list_free(void){ 8409 btstack_linked_list_iterator_t lit; 8410 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8411 while (btstack_linked_list_iterator_has_next(&lit)){ 8412 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8413 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8414 btstack_memory_periodic_advertiser_list_entry_free(entry); 8415 } 8416 } 8417 8418 uint8_t gap_periodic_advertiser_list_clear(void){ 8419 hci_periodic_advertiser_list_clear(); 8420 hci_run(); 8421 return ERROR_CODE_SUCCESS; 8422 } 8423 8424 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8425 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8426 if (status){ 8427 return status; 8428 } 8429 hci_run(); 8430 return ERROR_CODE_SUCCESS; 8431 } 8432 8433 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8434 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8435 if (status){ 8436 return status; 8437 } 8438 hci_run(); 8439 return ERROR_CODE_SUCCESS; 8440 } 8441 8442 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8443 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8444 // abort if already active 8445 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8446 return ERROR_CODE_COMMAND_DISALLOWED; 8447 } 8448 // store request 8449 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8450 hci_stack->le_periodic_sync_options = options; 8451 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8452 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8453 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8454 hci_stack->le_periodic_sync_skip = skip; 8455 hci_stack->le_periodic_sync_timeout = sync_timeout; 8456 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8457 8458 hci_run(); 8459 return ERROR_CODE_SUCCESS; 8460 } 8461 8462 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8463 // abort if not requested 8464 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8465 return ERROR_CODE_COMMAND_DISALLOWED; 8466 } 8467 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8468 hci_run(); 8469 return ERROR_CODE_SUCCESS; 8470 } 8471 8472 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8473 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8474 return ERROR_CODE_COMMAND_DISALLOWED; 8475 } 8476 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8477 hci_run(); 8478 return ERROR_CODE_SUCCESS; 8479 } 8480 8481 #endif 8482 #endif 8483 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 8484 static uint8_t hci_iso_stream_create(hci_con_handle_t cis_handle){ 8485 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 8486 if (iso_stream == NULL){ 8487 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8488 } else { 8489 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 8490 iso_stream->con_handle = cis_handle; 8491 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8492 return ERROR_CODE_SUCCESS; 8493 } 8494 } 8495 8496 static hci_iso_stream_t * hci_iso_stream_for_cis_handle(hci_con_handle_t cis_handle){ 8497 btstack_linked_list_iterator_t it; 8498 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8499 while (btstack_linked_list_iterator_has_next(&it)){ 8500 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8501 if ( iso_stream->con_handle == cis_handle ) { 8502 return iso_stream; 8503 } 8504 } 8505 return NULL; 8506 } 8507 8508 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 8509 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8510 btstack_memory_hci_iso_stream_free(iso_stream); 8511 } 8512 8513 static void hci_iso_stream_requested_finalize(void){ 8514 btstack_linked_list_iterator_t it; 8515 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8516 while (btstack_linked_list_iterator_has_next(&it)){ 8517 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8518 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8519 btstack_linked_list_iterator_remove(&it); 8520 btstack_memory_hci_iso_stream_free(iso_stream); 8521 } 8522 } 8523 } 8524 static void hci_iso_stream_requested_confirm(void){ 8525 btstack_linked_list_iterator_t it; 8526 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8527 while (btstack_linked_list_iterator_has_next(&it)){ 8528 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8529 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8530 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 8531 } 8532 } 8533 } 8534 8535 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 8536 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 8537 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 8538 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 8539 return (sdu_len_offset + 2 + sdu_len) == size; 8540 } 8541 8542 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 8543 if (hci_stack->iso_packet_handler == NULL) { 8544 return; 8545 } 8546 if (size < 4) { 8547 return; 8548 } 8549 8550 // parse header 8551 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 8552 uint16_t iso_data_len = little_endian_read_16(packet, 2); 8553 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 8554 hci_iso_stream_t * iso_stream = hci_iso_stream_for_cis_handle(cis_handle); 8555 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 8556 8557 // assert packet is complete 8558 if ((iso_data_len + 4u) != size){ 8559 return; 8560 } 8561 8562 if ((pb_flag & 0x01) == 0){ 8563 if (pb_flag == 0x02){ 8564 // The ISO_Data_Load field contains a header and a complete SDU. 8565 if (hci_iso_sdu_complete(packet, size)) { 8566 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 8567 } 8568 } else { 8569 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 8570 if (iso_stream == NULL){ 8571 return; 8572 } 8573 if (size > HCI_ISO_PAYLOAD_SIZE){ 8574 return; 8575 } 8576 memcpy(iso_stream->reassembly_buffer, packet, size); 8577 // fix pb_flag 8578 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 8579 iso_stream->reassembly_pos = size; 8580 } 8581 } else { 8582 // iso_data_load contains continuation or last fragment of an SDU 8583 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 8584 if (ts_flag != 0){ 8585 return; 8586 } 8587 // append fragment 8588 if (iso_stream == NULL){ 8589 return; 8590 } 8591 if (iso_stream->reassembly_pos == 0){ 8592 return; 8593 } 8594 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 8595 // reset reassembly buffer 8596 iso_stream->reassembly_pos = 0; 8597 return; 8598 } 8599 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 8600 iso_stream->reassembly_pos += iso_data_len; 8601 8602 // deliver if last fragment and SDU complete 8603 if (pb_flag == 0x03){ 8604 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 8605 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 8606 } 8607 iso_stream->reassembly_pos = 0; 8608 } 8609 } 8610 } 8611 8612 8613 #endif 8614 #endif /* ENABLE_BLE */ 8615 8616 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 8617 void hci_setup_test_connections_fuzz(void){ 8618 hci_connection_t * conn; 8619 8620 // default address: 66:55:44:33:00:01 8621 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 8622 8623 // setup Controller info 8624 hci_stack->num_cmd_packets = 255; 8625 hci_stack->acl_packets_total_num = 255; 8626 8627 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 8628 addr[5] = 0x01; 8629 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8630 conn->con_handle = addr[5]; 8631 conn->role = HCI_ROLE_SLAVE; 8632 conn->state = RECEIVED_CONNECTION_REQUEST; 8633 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8634 8635 // setup incoming Classic SCO connection with con handle 0x0002 8636 addr[5] = 0x02; 8637 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8638 conn->con_handle = addr[5]; 8639 conn->role = HCI_ROLE_SLAVE; 8640 conn->state = RECEIVED_CONNECTION_REQUEST; 8641 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8642 8643 // setup ready Classic ACL connection with con handle 0x0003 8644 addr[5] = 0x03; 8645 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8646 conn->con_handle = addr[5]; 8647 conn->role = HCI_ROLE_SLAVE; 8648 conn->state = OPEN; 8649 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8650 8651 // setup ready Classic SCO connection with con handle 0x0004 8652 addr[5] = 0x04; 8653 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 8654 conn->con_handle = addr[5]; 8655 conn->role = HCI_ROLE_SLAVE; 8656 conn->state = OPEN; 8657 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8658 8659 // setup ready LE ACL connection with con handle 0x005 and public address 8660 addr[5] = 0x05; 8661 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 8662 conn->con_handle = addr[5]; 8663 conn->role = HCI_ROLE_SLAVE; 8664 conn->state = OPEN; 8665 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 8666 conn->sm_connection.sm_connection_encrypted = 1; 8667 } 8668 8669 void hci_free_connections_fuzz(void){ 8670 btstack_linked_list_iterator_t it; 8671 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8672 while (btstack_linked_list_iterator_has_next(&it)){ 8673 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8674 btstack_linked_list_iterator_remove(&it); 8675 btstack_memory_hci_connection_free(con); 8676 } 8677 } 8678 void hci_simulate_working_fuzz(void){ 8679 hci_stack->le_scanning_param_update = false; 8680 hci_init_done(); 8681 hci_stack->num_cmd_packets = 255; 8682 } 8683 #endif 8684