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_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 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 con_handle, uint8_t big_handle); 228 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 229 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 230 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 231 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 232 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 233 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 234 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 235 static void hci_emit_big_terminated(const le_audio_big_t * big); 236 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 237 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync); 238 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 239 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 240 #endif /* ENABLE_BLE */ 241 242 // the STACK is here 243 #ifndef HAVE_MALLOC 244 static hci_stack_t hci_stack_static; 245 #endif 246 static hci_stack_t * hci_stack = NULL; 247 248 #ifdef ENABLE_CLASSIC 249 // default name 250 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 251 252 // test helper 253 static uint8_t disable_l2cap_timeouts = 0; 254 #endif 255 256 // reset connection state on create and on reconnect 257 // don't overwrite addr, con handle, role 258 static void hci_connection_init(hci_connection_t * conn){ 259 conn->authentication_flags = AUTH_FLAG_NONE; 260 conn->bonding_flags = 0; 261 conn->requested_security_level = LEVEL_0; 262 #ifdef ENABLE_CLASSIC 263 conn->request_role = HCI_ROLE_INVALID; 264 conn->sniff_subrating_max_latency = 0xffff; 265 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 266 conn->link_key_type = INVALID_LINK_KEY; 267 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 268 btstack_run_loop_set_timer_context(&conn->timeout, conn); 269 hci_connection_timestamp(conn); 270 #endif 271 conn->acl_recombination_length = 0; 272 conn->acl_recombination_pos = 0; 273 conn->num_packets_sent = 0; 274 275 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 276 #ifdef ENABLE_BLE 277 conn->le_phy_update_all_phys = 0xff; 278 #endif 279 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 280 conn->le_max_tx_octets = 27; 281 #endif 282 #ifdef ENABLE_CLASSIC_PAIRING_OOB 283 conn->classic_oob_c_192 = NULL; 284 conn->classic_oob_r_192 = NULL; 285 conn->classic_oob_c_256 = NULL; 286 conn->classic_oob_r_256 = NULL; 287 #endif 288 } 289 290 /** 291 * create connection for given address 292 * 293 * @return connection OR NULL, if no memory left 294 */ 295 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 296 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 297 298 hci_connection_t * conn = btstack_memory_hci_connection_get(); 299 if (!conn) return NULL; 300 hci_connection_init(conn); 301 302 bd_addr_copy(conn->address, addr); 303 conn->address_type = addr_type; 304 conn->con_handle = HCI_CON_HANDLE_INVALID; 305 conn->role = HCI_ROLE_INVALID; 306 307 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 308 309 return conn; 310 } 311 312 313 /** 314 * get le connection parameter range 315 * 316 * @return le connection parameter range struct 317 */ 318 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 319 *range = hci_stack->le_connection_parameter_range; 320 } 321 322 /** 323 * set le connection parameter range 324 * 325 */ 326 327 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 328 hci_stack->le_connection_parameter_range = *range; 329 } 330 331 /** 332 * @brief Test if connection parameters are inside in existing rage 333 * @param conn_interval_min (unit: 1.25ms) 334 * @param conn_interval_max (unit: 1.25ms) 335 * @param conn_latency 336 * @param supervision_timeout (unit: 10ms) 337 * @return 1 if included 338 */ 339 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){ 340 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 341 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 342 343 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 344 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 345 346 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 347 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 348 349 return 1; 350 } 351 352 /** 353 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 354 * @note: default: 1 355 * @param max_peripheral_connections 356 */ 357 #ifdef ENABLE_LE_PERIPHERAL 358 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 359 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 360 } 361 #endif 362 363 /** 364 * get hci connections iterator 365 * 366 * @return hci connections iterator 367 */ 368 369 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 370 btstack_linked_list_iterator_init(it, &hci_stack->connections); 371 } 372 373 /** 374 * get connection for a given handle 375 * 376 * @return connection OR NULL, if not found 377 */ 378 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 379 btstack_linked_list_iterator_t it; 380 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 381 while (btstack_linked_list_iterator_has_next(&it)){ 382 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 383 if ( item->con_handle == con_handle ) { 384 return item; 385 } 386 } 387 return NULL; 388 } 389 390 /** 391 * get connection for given address 392 * 393 * @return connection OR NULL, if not found 394 */ 395 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 396 btstack_linked_list_iterator_t it; 397 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 398 while (btstack_linked_list_iterator_has_next(&it)){ 399 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 400 if (connection->address_type != addr_type) continue; 401 if (memcmp(addr, connection->address, 6) != 0) continue; 402 return connection; 403 } 404 return NULL; 405 } 406 407 #ifdef ENABLE_CLASSIC 408 409 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 410 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 411 } 412 413 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 414 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 415 } 416 417 #ifdef ENABLE_SCO_OVER_HCI 418 static int hci_number_sco_connections(void){ 419 int connections = 0; 420 btstack_linked_list_iterator_t it; 421 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 422 while (btstack_linked_list_iterator_has_next(&it)){ 423 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 424 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 425 connections++; 426 } 427 return connections; 428 } 429 #endif 430 431 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 432 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 433 #ifdef HAVE_EMBEDDED_TICK 434 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 435 // connections might be timed out 436 hci_emit_l2cap_check_timeout(connection); 437 } 438 #else 439 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 440 // connections might be timed out 441 hci_emit_l2cap_check_timeout(connection); 442 } 443 #endif 444 } 445 446 static void hci_connection_timestamp(hci_connection_t *connection){ 447 #ifdef HAVE_EMBEDDED_TICK 448 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 449 #else 450 connection->timestamp = btstack_run_loop_get_time_ms(); 451 #endif 452 } 453 454 /** 455 * add authentication flags and reset timer 456 * @note: assumes classic connection 457 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 458 */ 459 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 460 bd_addr_t addr; 461 reverse_bd_addr(bd_addr, addr); 462 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 463 if (conn) { 464 connectionSetAuthenticationFlags(conn, flags); 465 hci_connection_timestamp(conn); 466 } 467 } 468 469 static bool hci_pairing_active(hci_connection_t * hci_connection){ 470 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 471 } 472 473 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 474 if (hci_pairing_active(hci_connection)) return; 475 if (ssp){ 476 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 477 } else { 478 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 479 } 480 // if we are initiator, we have sent an HCI Authenticate Request 481 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 482 483 // if we are responder, use minimal service security level as required level 484 if (!initiator){ 485 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); 486 } 487 488 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 489 490 uint8_t event[12]; 491 event[0] = GAP_EVENT_PAIRING_STARTED; 492 event[1] = 10; 493 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 494 reverse_bd_addr(hci_connection->address, &event[4]); 495 event[10] = (uint8_t) ssp; 496 event[11] = (uint8_t) initiator; 497 hci_emit_event(event, sizeof(event), 1); 498 } 499 500 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 501 hci_connection->requested_security_level = LEVEL_0; 502 if (!hci_pairing_active(hci_connection)) return; 503 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 504 #ifdef ENABLE_CLASSIC_PAIRING_OOB 505 hci_connection->classic_oob_c_192 = NULL; 506 hci_connection->classic_oob_r_192 = NULL; 507 hci_connection->classic_oob_c_256 = NULL; 508 hci_connection->classic_oob_r_256 = NULL; 509 #endif 510 log_info("pairing complete, status %02x", status); 511 512 uint8_t event[11]; 513 event[0] = GAP_EVENT_PAIRING_COMPLETE; 514 event[1] = 9; 515 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 516 reverse_bd_addr(hci_connection->address, &event[4]); 517 event[10] = status; 518 hci_emit_event(event, sizeof(event), 1); 519 520 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 521 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 522 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 523 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 524 hci_connection->bonding_status = status; 525 } 526 } 527 528 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 529 hci_connection_t * conn = hci_connection_for_handle(handle); 530 if (!conn) return false; 531 return hci_pairing_active(conn); 532 } 533 534 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 535 if (!hci_stack->link_key_db) return; 536 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 537 hci_stack->link_key_db->delete_link_key(addr); 538 } 539 540 void gap_store_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; 542 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 543 hci_stack->link_key_db->put_link_key(addr, link_key, type); 544 } 545 546 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 547 if (!hci_stack->link_key_db) return false; 548 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 549 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 550 return result; 551 } 552 553 void gap_delete_all_link_keys(void){ 554 bd_addr_t addr; 555 link_key_t link_key; 556 link_key_type_t type; 557 btstack_link_key_iterator_t it; 558 int ok = gap_link_key_iterator_init(&it); 559 if (!ok) { 560 log_error("could not initialize iterator"); 561 return; 562 } 563 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 564 gap_drop_link_key_for_bd_addr(addr); 565 } 566 gap_link_key_iterator_done(&it); 567 } 568 569 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 570 if (!hci_stack->link_key_db) return 0; 571 if (!hci_stack->link_key_db->iterator_init) return 0; 572 return hci_stack->link_key_db->iterator_init(it); 573 } 574 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){ 575 if (!hci_stack->link_key_db) return 0; 576 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 577 } 578 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 579 if (!hci_stack->link_key_db) return; 580 hci_stack->link_key_db->iterator_done(it); 581 } 582 #endif 583 584 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 585 switch (address_type){ 586 case BD_ADDR_TYPE_LE_PUBLIC: 587 case BD_ADDR_TYPE_LE_RANDOM: 588 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 589 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 590 return true; 591 default: 592 return false; 593 } 594 } 595 596 static int hci_is_le_connection(hci_connection_t * connection){ 597 return hci_is_le_connection_type(connection->address_type); 598 } 599 600 /** 601 * count connections 602 */ 603 static int nr_hci_connections(void){ 604 int count = 0; 605 btstack_linked_item_t *it; 606 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 607 count++; 608 } 609 return count; 610 } 611 612 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 613 614 unsigned int num_packets_sent_classic = 0; 615 unsigned int num_packets_sent_le = 0; 616 617 btstack_linked_item_t *it; 618 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 619 hci_connection_t * connection = (hci_connection_t *) it; 620 if (hci_is_le_connection(connection)){ 621 num_packets_sent_le += connection->num_packets_sent; 622 } 623 if (connection->address_type == BD_ADDR_TYPE_ACL){ 624 num_packets_sent_classic += connection->num_packets_sent; 625 } 626 } 627 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 628 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 629 int free_slots_le = 0; 630 631 if (free_slots_classic < 0){ 632 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); 633 return 0; 634 } 635 636 if (hci_stack->le_acl_packets_total_num){ 637 // if we have LE slots, they are used 638 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 639 if (free_slots_le < 0){ 640 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); 641 return 0; 642 } 643 } else { 644 // otherwise, classic slots are used for LE, too 645 free_slots_classic -= num_packets_sent_le; 646 if (free_slots_classic < 0){ 647 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); 648 return 0; 649 } 650 } 651 652 switch (address_type){ 653 case BD_ADDR_TYPE_UNKNOWN: 654 log_error("hci_number_free_acl_slots: unknown address type"); 655 return 0; 656 657 case BD_ADDR_TYPE_ACL: 658 return (uint16_t) free_slots_classic; 659 660 default: 661 if (hci_stack->le_acl_packets_total_num > 0){ 662 return (uint16_t) free_slots_le; 663 } 664 return (uint16_t) free_slots_classic; 665 } 666 } 667 668 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 669 // get connection type 670 hci_connection_t * connection = hci_connection_for_handle(con_handle); 671 if (!connection){ 672 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 673 return 0; 674 } 675 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 676 } 677 678 #ifdef ENABLE_CLASSIC 679 static int hci_number_free_sco_slots(void){ 680 unsigned int num_sco_packets_sent = 0; 681 btstack_linked_item_t *it; 682 if (hci_stack->synchronous_flow_control_enabled){ 683 // explicit flow control 684 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 685 hci_connection_t * connection = (hci_connection_t *) it; 686 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 687 num_sco_packets_sent += connection->num_packets_sent; 688 } 689 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 690 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 691 return 0; 692 } 693 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 694 } else { 695 // implicit flow control -- TODO 696 int num_ready = 0; 697 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 698 hci_connection_t * connection = (hci_connection_t *) it; 699 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 700 if (connection->sco_tx_ready == 0) continue; 701 num_ready++; 702 } 703 return num_ready; 704 } 705 } 706 #endif 707 708 // only used to send HCI Host Number Completed Packets 709 static int hci_can_send_comand_packet_transport(void){ 710 if (hci_stack->hci_packet_buffer_reserved) return 0; 711 712 // check for async hci transport implementations 713 if (hci_stack->hci_transport->can_send_packet_now){ 714 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 715 return 0; 716 } 717 } 718 return 1; 719 } 720 721 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 722 bool hci_can_send_command_packet_now(void){ 723 if (hci_can_send_comand_packet_transport() == 0) return false; 724 return hci_stack->num_cmd_packets > 0u; 725 } 726 727 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 728 // check for async hci transport implementations 729 if (!hci_stack->hci_transport->can_send_packet_now) return true; 730 return hci_stack->hci_transport->can_send_packet_now(packet_type); 731 } 732 733 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 734 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 735 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 736 } 737 738 bool hci_can_send_acl_le_packet_now(void){ 739 if (hci_stack->hci_packet_buffer_reserved) return false; 740 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 741 } 742 743 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 744 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 745 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 746 } 747 748 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 749 if (hci_stack->hci_packet_buffer_reserved) return false; 750 return hci_can_send_prepared_acl_packet_now(con_handle); 751 } 752 753 #ifdef ENABLE_CLASSIC 754 bool hci_can_send_acl_classic_packet_now(void){ 755 if (hci_stack->hci_packet_buffer_reserved) return false; 756 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 757 } 758 759 bool hci_can_send_prepared_sco_packet_now(void){ 760 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 761 if (hci_have_usb_transport()){ 762 return hci_stack->sco_can_send_now; 763 } else { 764 return hci_number_free_sco_slots() > 0; 765 } 766 } 767 768 bool hci_can_send_sco_packet_now(void){ 769 if (hci_stack->hci_packet_buffer_reserved) return false; 770 return hci_can_send_prepared_sco_packet_now(); 771 } 772 773 void hci_request_sco_can_send_now_event(void){ 774 hci_stack->sco_waiting_for_can_send_now = 1; 775 hci_notify_if_sco_can_send_now(); 776 } 777 #endif 778 779 // used for internal checks in l2cap.c 780 bool hci_is_packet_buffer_reserved(void){ 781 return hci_stack->hci_packet_buffer_reserved; 782 } 783 784 // reserves outgoing packet buffer. 785 // @return 1 if successful 786 bool hci_reserve_packet_buffer(void){ 787 if (hci_stack->hci_packet_buffer_reserved) { 788 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 789 return false; 790 } 791 hci_stack->hci_packet_buffer_reserved = true; 792 return true; 793 } 794 795 void hci_release_packet_buffer(void){ 796 hci_stack->hci_packet_buffer_reserved = false; 797 } 798 799 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 800 static int hci_transport_synchronous(void){ 801 return hci_stack->hci_transport->can_send_packet_now == NULL; 802 } 803 804 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 805 806 // 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); 807 808 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 809 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 810 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 811 max_acl_data_packet_length = hci_stack->le_data_packets_length; 812 } 813 814 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 815 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 816 max_acl_data_packet_length = connection->le_max_tx_octets; 817 } 818 #endif 819 820 log_debug("hci_send_acl_packet_fragments entered"); 821 822 uint8_t status = ERROR_CODE_SUCCESS; 823 // multiple packets could be send on a synchronous HCI transport 824 while (true){ 825 826 log_debug("hci_send_acl_packet_fragments loop entered"); 827 828 // get current data 829 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 830 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 831 bool more_fragments = false; 832 833 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 834 if (current_acl_data_packet_length > max_acl_data_packet_length){ 835 more_fragments = true; 836 current_acl_data_packet_length = max_acl_data_packet_length; 837 } 838 839 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 840 if (acl_header_pos > 0u){ 841 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 842 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 843 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 844 } 845 846 // update header len 847 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 848 849 // count packet 850 connection->num_packets_sent++; 851 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 852 853 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 854 if (more_fragments){ 855 // update start of next fragment to send 856 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 857 } else { 858 // done 859 hci_stack->acl_fragmentation_pos = 0; 860 hci_stack->acl_fragmentation_total_size = 0; 861 } 862 863 // send packet 864 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 865 const int size = current_acl_data_packet_length + 4; 866 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 867 hci_stack->acl_fragmentation_tx_active = 1; 868 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 869 if (err != 0){ 870 // no error from HCI Transport expected 871 status = ERROR_CODE_HARDWARE_FAILURE; 872 } 873 874 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 875 876 // done yet? 877 if (!more_fragments) break; 878 879 // can send more? 880 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 881 } 882 883 log_debug("hci_send_acl_packet_fragments loop over"); 884 885 // release buffer now for synchronous transport 886 if (hci_transport_synchronous()){ 887 hci_stack->acl_fragmentation_tx_active = 0; 888 hci_release_packet_buffer(); 889 hci_emit_transport_packet_sent(); 890 } 891 892 return status; 893 } 894 895 // pre: caller has reserved the packet buffer 896 uint8_t hci_send_acl_packet_buffer(int size){ 897 btstack_assert(hci_stack->hci_packet_buffer_reserved); 898 899 uint8_t * packet = hci_stack->hci_packet_buffer; 900 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 901 902 // check for free places on Bluetooth module 903 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 904 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 905 hci_release_packet_buffer(); 906 hci_emit_transport_packet_sent(); 907 return BTSTACK_ACL_BUFFERS_FULL; 908 } 909 910 hci_connection_t *connection = hci_connection_for_handle( con_handle); 911 if (!connection) { 912 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 913 hci_release_packet_buffer(); 914 hci_emit_transport_packet_sent(); 915 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 916 } 917 918 #ifdef ENABLE_CLASSIC 919 hci_connection_timestamp(connection); 920 #endif 921 922 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 923 924 // setup data 925 hci_stack->acl_fragmentation_total_size = size; 926 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 927 928 return hci_send_acl_packet_fragments(connection); 929 } 930 931 #ifdef ENABLE_CLASSIC 932 // pre: caller has reserved the packet buffer 933 uint8_t hci_send_sco_packet_buffer(int size){ 934 btstack_assert(hci_stack->hci_packet_buffer_reserved); 935 936 uint8_t * packet = hci_stack->hci_packet_buffer; 937 938 // skip checks in loopback mode 939 if (!hci_stack->loopback_mode){ 940 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 941 942 // check for free places on Bluetooth module 943 if (!hci_can_send_prepared_sco_packet_now()) { 944 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 945 hci_release_packet_buffer(); 946 hci_emit_transport_packet_sent(); 947 return BTSTACK_ACL_BUFFERS_FULL; 948 } 949 950 // track send packet in connection struct 951 hci_connection_t *connection = hci_connection_for_handle( con_handle); 952 if (!connection) { 953 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 957 } 958 959 if (hci_have_usb_transport()){ 960 // token used 961 hci_stack->sco_can_send_now = false; 962 } else { 963 if (hci_stack->synchronous_flow_control_enabled){ 964 connection->num_packets_sent++; 965 } else { 966 connection->sco_tx_ready--; 967 } 968 } 969 } 970 971 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 972 973 #ifdef HAVE_SCO_TRANSPORT 974 hci_stack->sco_transport->send_packet(packet, size); 975 hci_release_packet_buffer(); 976 hci_emit_transport_packet_sent(); 977 978 return 0; 979 #else 980 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 981 if (hci_transport_synchronous()){ 982 hci_release_packet_buffer(); 983 hci_emit_transport_packet_sent(); 984 } 985 986 if (err != 0){ 987 return ERROR_CODE_HARDWARE_FAILURE; 988 } 989 return ERROR_CODE_SUCCESS; 990 #endif 991 } 992 #endif 993 994 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 995 static uint8_t hci_send_iso_packet_fragments(void){ 996 997 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 998 uint8_t status = ERROR_CODE_SUCCESS; 999 // multiple packets could be send on a synchronous HCI transport 1000 while (true){ 1001 1002 // get current data 1003 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1004 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1005 bool more_fragments = false; 1006 1007 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1008 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1009 more_fragments = true; 1010 current_iso_data_packet_length = max_iso_data_packet_length; 1011 } 1012 1013 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1014 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1015 uint8_t pb_flags; 1016 if (iso_header_pos == 0u){ 1017 // first fragment, keep TS field 1018 pb_flags = more_fragments ? 0x00 : 0x02; 1019 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1020 } else { 1021 // later fragment, drop TS field 1022 pb_flags = more_fragments ? 0x01 : 0x03; 1023 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1024 } 1025 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1026 1027 // update header len 1028 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1029 1030 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1031 if (more_fragments){ 1032 // update start of next fragment to send 1033 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1034 } else { 1035 // done 1036 hci_stack->iso_fragmentation_pos = 0; 1037 hci_stack->iso_fragmentation_total_size = 0; 1038 } 1039 1040 // send packet 1041 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1042 const int size = current_iso_data_packet_length + 4; 1043 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1044 hci_stack->iso_fragmentation_tx_active = true; 1045 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1046 if (err != 0){ 1047 // no error from HCI Transport expected 1048 status = ERROR_CODE_HARDWARE_FAILURE; 1049 } 1050 1051 // done yet? 1052 if (!more_fragments) break; 1053 1054 // can send more? 1055 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1056 } 1057 1058 // release buffer now for synchronous transport 1059 if (hci_transport_synchronous()){ 1060 hci_stack->iso_fragmentation_tx_active = false; 1061 hci_release_packet_buffer(); 1062 hci_emit_transport_packet_sent(); 1063 } 1064 1065 return status; 1066 } 1067 1068 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1069 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1070 1071 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1072 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1073 if (iso_stream == NULL){ 1074 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1075 } 1076 1077 // TODO: check for space on controller 1078 1079 // track outgoing packet sent 1080 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1081 iso_stream->num_packets_sent++; 1082 1083 // setup data 1084 hci_stack->iso_fragmentation_total_size = size; 1085 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1086 1087 return hci_send_iso_packet_fragments(); 1088 } 1089 #endif 1090 1091 static void acl_handler(uint8_t *packet, uint16_t size){ 1092 1093 // get info 1094 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1095 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1096 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1097 uint16_t acl_length = READ_ACL_LENGTH(packet); 1098 1099 // ignore non-registered handle 1100 if (!conn){ 1101 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1102 return; 1103 } 1104 1105 // assert packet is complete 1106 if ((acl_length + 4u) != size){ 1107 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1108 return; 1109 } 1110 1111 #ifdef ENABLE_CLASSIC 1112 // update idle timestamp 1113 hci_connection_timestamp(conn); 1114 #endif 1115 1116 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1117 hci_stack->host_completed_packets = 1; 1118 conn->num_packets_completed++; 1119 #endif 1120 1121 // handle different packet types 1122 switch (acl_flags & 0x03u) { 1123 1124 case 0x01: // continuation fragment 1125 1126 // sanity checks 1127 if (conn->acl_recombination_pos == 0u) { 1128 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1129 return; 1130 } 1131 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1132 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1133 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1134 conn->acl_recombination_pos = 0; 1135 return; 1136 } 1137 1138 // append fragment payload (header already stored) 1139 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1140 &packet[4], acl_length); 1141 conn->acl_recombination_pos += acl_length; 1142 1143 // forward complete L2CAP packet if complete. 1144 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1145 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1146 // reset recombination buffer 1147 conn->acl_recombination_length = 0; 1148 conn->acl_recombination_pos = 0; 1149 } 1150 break; 1151 1152 case 0x02: { // first fragment 1153 1154 // sanity check 1155 if (conn->acl_recombination_pos) { 1156 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1157 conn->acl_recombination_pos = 0; 1158 } 1159 1160 // peek into L2CAP packet! 1161 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1162 1163 // compare fragment size to L2CAP packet size 1164 if (acl_length >= (l2cap_length + 4u)){ 1165 // forward fragment as L2CAP packet 1166 hci_emit_acl_packet(packet, acl_length + 4u); 1167 } else { 1168 1169 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1170 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1171 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1172 return; 1173 } 1174 1175 // store first fragment and tweak acl length for complete package 1176 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1177 packet, acl_length + 4u); 1178 conn->acl_recombination_pos = acl_length + 4u; 1179 conn->acl_recombination_length = l2cap_length; 1180 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1181 } 1182 break; 1183 1184 } 1185 default: 1186 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1187 return; 1188 } 1189 1190 // execute main loop 1191 hci_run(); 1192 } 1193 1194 static void hci_connection_stop_timer(hci_connection_t * conn){ 1195 btstack_run_loop_remove_timer(&conn->timeout); 1196 #ifdef ENABLE_CLASSIC 1197 btstack_run_loop_remove_timer(&conn->timeout_sco); 1198 #endif 1199 } 1200 1201 static void hci_shutdown_connection(hci_connection_t *conn){ 1202 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1203 1204 #ifdef ENABLE_CLASSIC 1205 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1206 bd_addr_type_t addr_type = conn->address_type; 1207 #endif 1208 #ifdef HAVE_SCO_TRANSPORT 1209 hci_con_handle_t con_handle = conn->con_handle; 1210 #endif 1211 #endif 1212 1213 hci_connection_stop_timer(conn); 1214 1215 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1216 btstack_memory_hci_connection_free( conn ); 1217 1218 // now it's gone 1219 hci_emit_nr_connections_changed(); 1220 1221 #ifdef ENABLE_CLASSIC 1222 #ifdef ENABLE_SCO_OVER_HCI 1223 // update SCO 1224 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1225 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1226 } 1227 #endif 1228 #ifdef HAVE_SCO_TRANSPORT 1229 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1230 hci_stack->sco_transport->close(con_handle); 1231 } 1232 #endif 1233 #endif 1234 } 1235 1236 #ifdef ENABLE_CLASSIC 1237 1238 static const uint16_t packet_type_sizes[] = { 1239 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1240 HCI_ACL_DH1_SIZE, 0, 0, 0, 1241 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1242 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1243 }; 1244 static const uint8_t packet_type_feature_requirement_bit[] = { 1245 0, // 3 slot packets 1246 1, // 5 slot packets 1247 25, // EDR 2 mpbs 1248 26, // EDR 3 mbps 1249 39, // 3 slot EDR packts 1250 40, // 5 slot EDR packet 1251 }; 1252 static const uint16_t packet_type_feature_packet_mask[] = { 1253 0x0f00, // 3 slot packets 1254 0xf000, // 5 slot packets 1255 0x1102, // EDR 2 mpbs 1256 0x2204, // EDR 3 mbps 1257 0x0300, // 3 slot EDR packts 1258 0x3000, // 5 slot EDR packet 1259 }; 1260 1261 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1262 // enable packet types based on size 1263 uint16_t packet_types = 0; 1264 unsigned int i; 1265 for (i=0;i<16;i++){ 1266 if (packet_type_sizes[i] == 0) continue; 1267 if (packet_type_sizes[i] <= buffer_size){ 1268 packet_types |= 1 << i; 1269 } 1270 } 1271 // disable packet types due to missing local supported features 1272 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1273 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1274 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1275 if (feature_set) continue; 1276 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1277 packet_types &= ~packet_type_feature_packet_mask[i]; 1278 } 1279 // flip bits for "may not be used" 1280 packet_types ^= 0x3306; 1281 return packet_types; 1282 } 1283 1284 uint16_t hci_usable_acl_packet_types(void){ 1285 return hci_stack->packet_types; 1286 } 1287 #endif 1288 1289 uint8_t* hci_get_outgoing_packet_buffer(void){ 1290 // hci packet buffer is >= acl data packet length 1291 return hci_stack->hci_packet_buffer; 1292 } 1293 1294 uint16_t hci_max_acl_data_packet_length(void){ 1295 return hci_stack->acl_data_packet_length; 1296 } 1297 1298 #ifdef ENABLE_CLASSIC 1299 bool hci_extended_sco_link_supported(void){ 1300 // No. 31, byte 3, bit 7 1301 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1302 } 1303 #endif 1304 1305 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1306 // No. 54, byte 6, bit 6 1307 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1308 } 1309 1310 #ifdef ENABLE_CLASSIC 1311 static int gap_ssp_supported(void){ 1312 // No. 51, byte 6, bit 3 1313 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1314 } 1315 #endif 1316 1317 static int hci_classic_supported(void){ 1318 #ifdef ENABLE_CLASSIC 1319 // No. 37, byte 4, bit 5, = No BR/EDR Support 1320 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1321 #else 1322 return 0; 1323 #endif 1324 } 1325 1326 static int hci_le_supported(void){ 1327 #ifdef ENABLE_BLE 1328 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1329 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1330 #else 1331 return 0; 1332 #endif 1333 } 1334 1335 static bool hci_command_supported(uint8_t command_index){ 1336 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1337 } 1338 1339 #ifdef ENABLE_BLE 1340 1341 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1342 static bool hci_extended_advertising_supported(void){ 1343 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1344 } 1345 #endif 1346 1347 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1348 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1349 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1350 } else { 1351 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1352 } 1353 } 1354 1355 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1356 *addr_type = hci_stack->le_own_addr_type; 1357 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1358 } 1359 1360 #ifdef ENABLE_LE_PERIPHERAL 1361 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1362 *addr_type = hci_stack->le_advertisements_own_addr_type; 1363 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1364 }; 1365 #endif 1366 1367 #ifdef ENABLE_LE_CENTRAL 1368 1369 /** 1370 * @brief Get own addr type and address used for LE connections (Central) 1371 */ 1372 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1373 *addr_type = hci_stack->le_connection_own_addr_type; 1374 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1375 } 1376 1377 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1378 1379 uint16_t offset = 3; 1380 uint8_t num_reports = packet[offset]; 1381 offset += 1; 1382 1383 uint16_t i; 1384 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1385 for (i=0; (i<num_reports) && (offset < size);i++){ 1386 // sanity checks on data_length: 1387 uint8_t data_length = packet[offset + 8]; 1388 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1389 if ((offset + 9u + data_length + 1u) > size) return; 1390 // setup event 1391 uint8_t event_size = 10u + data_length; 1392 uint16_t pos = 0; 1393 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1394 event[pos++] = event_size; 1395 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1396 offset += 8; 1397 pos += 8; 1398 event[pos++] = packet[offset + 1 + data_length]; // rssi 1399 event[pos++] = data_length; 1400 offset++; 1401 (void)memcpy(&event[pos], &packet[offset], data_length); 1402 pos += data_length; 1403 offset += data_length + 1u; // rssi 1404 hci_emit_event(event, pos, 1); 1405 } 1406 } 1407 1408 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1409 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1410 uint16_t offset = 3; 1411 uint8_t num_reports = packet[offset++]; 1412 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1413 uint8_t i; 1414 for (i=0; (i<num_reports) && (offset < size);i++){ 1415 // sanity checks on data_length: 1416 uint16_t data_length = packet[offset + 23]; 1417 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1418 if ((offset + 24u + data_length) > size) return; 1419 uint16_t event_type = little_endian_read_16(packet, offset); 1420 offset += 2; 1421 if ((event_type & 0x10) != 0) { 1422 // setup legacy event 1423 uint8_t legacy_event_type; 1424 switch (event_type){ 1425 case 0b0010011: 1426 // ADV_IND 1427 legacy_event_type = 0; 1428 break; 1429 case 0b0010101: 1430 // ADV_DIRECT_IND 1431 legacy_event_type = 1; 1432 break; 1433 case 0b0010010: 1434 // ADV_SCAN_IND 1435 legacy_event_type = 2; 1436 break; 1437 case 0b0010000: 1438 // ADV_NONCONN_IND 1439 legacy_event_type = 3; 1440 break; 1441 case 0b0011011: 1442 case 0b0011010: 1443 // SCAN_RSP 1444 legacy_event_type = 4; 1445 break; 1446 default: 1447 legacy_event_type = 0; 1448 break; 1449 } 1450 uint16_t pos = 0; 1451 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1452 event[pos++] = 10u + data_length; 1453 event[pos++] = legacy_event_type; 1454 // copy address type + address 1455 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1456 offset += 7; 1457 pos += 7; 1458 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1459 offset += 4; 1460 // copy rssi 1461 event[pos++] = packet[offset++]; 1462 // skip periodic advertising interval and direct address 1463 offset += 9; 1464 // copy data len + data; 1465 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1466 pos += 1 +data_length; 1467 offset += 1+ data_length; 1468 hci_emit_event(event, pos, 1); 1469 } else { 1470 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1471 uint8_t report_len = 24 + data_length; 1472 event[1] = report_len; 1473 little_endian_store_16(event, 2, event_type); 1474 memcpy(&event[4], &packet[offset], report_len); 1475 offset += report_len; 1476 hci_emit_event(event, 2 + report_len, 1); 1477 } 1478 } 1479 } 1480 #endif 1481 1482 #endif 1483 #endif 1484 1485 #ifdef ENABLE_BLE 1486 #ifdef ENABLE_LE_PERIPHERAL 1487 static void hci_update_advertisements_enabled_for_current_roles(void){ 1488 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1489 // get number of active le slave connections 1490 int num_slave_connections = 0; 1491 btstack_linked_list_iterator_t it; 1492 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1493 while (btstack_linked_list_iterator_has_next(&it)){ 1494 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1495 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1496 if (con->state != OPEN) continue; 1497 if (con->role != HCI_ROLE_SLAVE) continue; 1498 if (!hci_is_le_connection(con)) continue; 1499 num_slave_connections++; 1500 } 1501 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1502 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1503 } else { 1504 hci_stack->le_advertisements_enabled_for_current_roles = false; 1505 } 1506 } 1507 #endif 1508 #endif 1509 1510 #ifdef ENABLE_CLASSIC 1511 static void gap_run_set_local_name(void){ 1512 hci_reserve_packet_buffer(); 1513 uint8_t * packet = hci_stack->hci_packet_buffer; 1514 // construct HCI Command and send 1515 uint16_t opcode = hci_write_local_name.opcode; 1516 hci_stack->last_cmd_opcode = opcode; 1517 packet[0] = opcode & 0xff; 1518 packet[1] = opcode >> 8; 1519 packet[2] = DEVICE_NAME_LEN; 1520 memset(&packet[3], 0, DEVICE_NAME_LEN); 1521 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1522 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1523 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1524 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1525 // expand '00:00:00:00:00:00' in name with bd_addr 1526 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1527 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1528 } 1529 1530 static void gap_run_set_eir_data(void){ 1531 hci_reserve_packet_buffer(); 1532 uint8_t * packet = hci_stack->hci_packet_buffer; 1533 // construct HCI Command in-place and send 1534 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1535 hci_stack->last_cmd_opcode = opcode; 1536 uint16_t offset = 0; 1537 packet[offset++] = opcode & 0xff; 1538 packet[offset++] = opcode >> 8; 1539 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1540 packet[offset++] = 0; // FEC not required 1541 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1542 if (hci_stack->eir_data){ 1543 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1544 ad_context_t context; 1545 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1546 uint8_t data_type = ad_iterator_get_data_type(&context); 1547 uint8_t size = ad_iterator_get_data_len(&context); 1548 const uint8_t *data = ad_iterator_get_data(&context); 1549 // copy item 1550 packet[offset++] = size + 1; 1551 packet[offset++] = data_type; 1552 memcpy(&packet[offset], data, size); 1553 // update name item 1554 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1555 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1556 } 1557 offset += size; 1558 } 1559 } else { 1560 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1561 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1562 packet[offset++] = bytes_to_copy + 1; 1563 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1564 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1565 // expand '00:00:00:00:00:00' in name with bd_addr 1566 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1567 } 1568 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1569 } 1570 1571 static void hci_run_gap_tasks_classic(void){ 1572 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1573 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1574 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1575 return; 1576 } 1577 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1578 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1579 gap_run_set_local_name(); 1580 return; 1581 } 1582 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1583 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1584 gap_run_set_eir_data(); 1585 return; 1586 } 1587 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1588 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1589 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1590 return; 1591 } 1592 // write page scan activity 1593 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1594 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1595 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1596 return; 1597 } 1598 // write page scan type 1599 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1600 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1601 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1602 return; 1603 } 1604 // write page timeout 1605 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1606 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1607 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1608 return; 1609 } 1610 // send scan enable 1611 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1612 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1613 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1614 return; 1615 } 1616 // send write scan activity 1617 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1618 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1619 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1620 return; 1621 } 1622 } 1623 #endif 1624 1625 #ifndef HAVE_HOST_CONTROLLER_API 1626 1627 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1628 if (!hci_stack->config) return 0; 1629 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1630 // Limit baud rate for Broadcom chipsets to 3 mbps 1631 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1632 baud_rate = 3000000; 1633 } 1634 return baud_rate; 1635 } 1636 1637 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1638 UNUSED(ds); 1639 1640 switch (hci_stack->substate){ 1641 case HCI_INIT_W4_SEND_RESET: 1642 log_info("Resend HCI Reset"); 1643 hci_stack->substate = HCI_INIT_SEND_RESET; 1644 hci_stack->num_cmd_packets = 1; 1645 hci_run(); 1646 break; 1647 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1648 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1649 if (hci_stack->hci_transport->reset_link){ 1650 hci_stack->hci_transport->reset_link(); 1651 } 1652 1653 /* fall through */ 1654 1655 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1656 log_info("Resend HCI Reset - CSR Warm Boot"); 1657 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1658 hci_stack->num_cmd_packets = 1; 1659 hci_run(); 1660 break; 1661 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1662 if (hci_stack->hci_transport->set_baudrate){ 1663 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1664 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1665 hci_stack->hci_transport->set_baudrate(baud_rate); 1666 } 1667 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1668 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1669 if (hci_stack->hci_transport->reset_link){ 1670 log_info("Link Reset"); 1671 hci_stack->hci_transport->reset_link(); 1672 } 1673 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1674 hci_run(); 1675 } 1676 break; 1677 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1678 // otherwise continue 1679 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1680 hci_send_cmd(&hci_read_local_supported_commands); 1681 break; 1682 default: 1683 break; 1684 } 1685 } 1686 #endif 1687 1688 static void hci_initializing_next_state(void){ 1689 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1690 } 1691 1692 static void hci_init_done(void){ 1693 // done. tell the app 1694 log_info("hci_init_done -> HCI_STATE_WORKING"); 1695 hci_stack->state = HCI_STATE_WORKING; 1696 hci_emit_state(); 1697 } 1698 1699 // assumption: hci_can_send_command_packet_now() == true 1700 static void hci_initializing_run(void){ 1701 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1702 1703 if (!hci_can_send_command_packet_now()) return; 1704 1705 #ifndef HAVE_HOST_CONTROLLER_API 1706 bool need_baud_change = hci_stack->config 1707 && hci_stack->chipset 1708 && hci_stack->chipset->set_baudrate_command 1709 && hci_stack->hci_transport->set_baudrate 1710 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1711 #endif 1712 1713 switch (hci_stack->substate){ 1714 case HCI_INIT_SEND_RESET: 1715 hci_state_reset(); 1716 1717 #ifndef HAVE_HOST_CONTROLLER_API 1718 // prepare reset if command complete not received in 100ms 1719 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1720 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1721 btstack_run_loop_add_timer(&hci_stack->timeout); 1722 #endif 1723 // send command 1724 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1725 hci_send_cmd(&hci_reset); 1726 break; 1727 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1728 hci_send_cmd(&hci_read_local_version_information); 1729 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1730 break; 1731 1732 #ifndef HAVE_HOST_CONTROLLER_API 1733 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1734 hci_state_reset(); 1735 // prepare reset if command complete not received in 100ms 1736 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1737 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1738 btstack_run_loop_add_timer(&hci_stack->timeout); 1739 // send command 1740 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1741 hci_send_cmd(&hci_reset); 1742 break; 1743 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1744 hci_state_reset(); 1745 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1746 hci_send_cmd(&hci_reset); 1747 break; 1748 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1749 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1750 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1751 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1752 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1753 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1754 break; 1755 } 1756 case HCI_INIT_SET_BD_ADDR: 1757 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1758 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1759 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1760 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1761 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1762 break; 1763 case HCI_INIT_SEND_READ_LOCAL_NAME: 1764 #ifdef ENABLE_CLASSIC 1765 hci_send_cmd(&hci_read_local_name); 1766 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1767 break; 1768 #endif 1769 /* fall through */ 1770 1771 case HCI_INIT_SEND_BAUD_CHANGE: 1772 if (need_baud_change) { 1773 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1774 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1775 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1776 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1777 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1778 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1779 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1780 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1781 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1782 btstack_run_loop_add_timer(&hci_stack->timeout); 1783 } 1784 break; 1785 } 1786 1787 /* fall through */ 1788 1789 case HCI_INIT_CUSTOM_INIT: 1790 // Custom initialization 1791 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1792 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1793 bool send_cmd = false; 1794 switch (hci_stack->chipset_result){ 1795 case BTSTACK_CHIPSET_VALID_COMMAND: 1796 send_cmd = true; 1797 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1798 break; 1799 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1800 send_cmd = true; 1801 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1802 log_info("CSR Warm Boot"); 1803 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1804 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1805 btstack_run_loop_add_timer(&hci_stack->timeout); 1806 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1807 && hci_stack->config 1808 && hci_stack->chipset 1809 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1810 && hci_stack->hci_transport->set_baudrate 1811 && hci_transport_uart_get_main_baud_rate()){ 1812 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1813 } else { 1814 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1815 } 1816 break; 1817 default: 1818 break; 1819 } 1820 1821 if (send_cmd){ 1822 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1823 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1824 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1825 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1826 break; 1827 } 1828 log_info("Init script done"); 1829 1830 // Init script download on Broadcom chipsets causes: 1831 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1832 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1833 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1834 1835 // - baud rate to reset, restore UART baud rate if needed 1836 if (need_baud_change) { 1837 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1838 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1839 hci_stack->hci_transport->set_baudrate(baud_rate); 1840 } 1841 1842 uint16_t bcm_delay_ms = 300; 1843 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1844 // -> Work around: wait here. 1845 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1846 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1847 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1848 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1849 btstack_run_loop_add_timer(&hci_stack->timeout); 1850 break; 1851 } 1852 } 1853 #endif 1854 /* fall through */ 1855 1856 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1857 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1858 hci_send_cmd(&hci_read_local_supported_commands); 1859 break; 1860 case HCI_INIT_READ_BD_ADDR: 1861 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1862 hci_send_cmd(&hci_read_bd_addr); 1863 break; 1864 case HCI_INIT_READ_BUFFER_SIZE: 1865 // only read buffer size if supported 1866 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1867 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1868 hci_send_cmd(&hci_read_buffer_size); 1869 break; 1870 } 1871 1872 /* fall through */ 1873 1874 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1875 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1876 hci_send_cmd(&hci_read_local_supported_features); 1877 break; 1878 1879 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1880 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1881 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1882 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1883 break; 1884 case HCI_INIT_HOST_BUFFER_SIZE: 1885 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1886 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1887 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1888 break; 1889 #endif 1890 1891 case HCI_INIT_SET_EVENT_MASK: 1892 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1893 if (hci_le_supported()){ 1894 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1895 } else { 1896 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1897 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1898 } 1899 break; 1900 1901 case HCI_INIT_SET_EVENT_MASK_2: 1902 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1903 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1904 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1905 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1906 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1907 // Encryption Change Event v2 - bit 25 1908 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1909 break; 1910 } 1911 1912 #ifdef ENABLE_CLASSIC 1913 /* fall through */ 1914 1915 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1916 if (hci_classic_supported() && gap_ssp_supported()){ 1917 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1918 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1919 break; 1920 } 1921 1922 /* fall through */ 1923 1924 case HCI_INIT_WRITE_INQUIRY_MODE: 1925 if (hci_classic_supported()){ 1926 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1927 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1928 break; 1929 } 1930 1931 /* fall through */ 1932 1933 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1934 // skip write secure connections host support if not supported or disabled 1935 if (hci_classic_supported() && hci_stack->secure_connections_enable 1936 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1937 hci_stack->secure_connections_active = true; 1938 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1939 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1940 break; 1941 } 1942 1943 /* fall through */ 1944 1945 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 1946 // skip set min encryption key size 1947 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 1948 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 1949 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 1950 break; 1951 } 1952 1953 #ifdef ENABLE_SCO_OVER_HCI 1954 /* fall through */ 1955 1956 // only sent if ENABLE_SCO_OVER_HCI is defined 1957 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1958 // skip write synchronous flow control if not supported 1959 if (hci_classic_supported() 1960 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 1961 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1962 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1963 break; 1964 } 1965 /* fall through */ 1966 1967 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1968 // skip write default erroneous data reporting if not supported 1969 if (hci_classic_supported() 1970 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 1971 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1972 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1973 break; 1974 } 1975 #endif 1976 1977 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 1978 /* fall through */ 1979 1980 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1981 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1982 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 1983 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1984 #ifdef ENABLE_SCO_OVER_HCI 1985 log_info("BCM: Route SCO data via HCI transport"); 1986 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1987 #endif 1988 #ifdef ENABLE_SCO_OVER_PCM 1989 log_info("BCM: Route SCO data via PCM interface"); 1990 #ifdef ENABLE_BCM_PCM_WBS 1991 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 1992 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1993 #else 1994 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1995 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1996 #endif 1997 #endif 1998 break; 1999 } 2000 #endif 2001 2002 #ifdef ENABLE_SCO_OVER_PCM 2003 /* fall through */ 2004 2005 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2006 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2007 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2008 log_info("BCM: Config PCM interface for I2S"); 2009 #ifdef ENABLE_BCM_PCM_WBS 2010 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2011 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2012 #else 2013 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2014 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2015 #endif 2016 break; 2017 } 2018 #endif 2019 #endif 2020 2021 #ifdef ENABLE_BLE 2022 /* fall through */ 2023 2024 // LE INIT 2025 case HCI_INIT_LE_READ_BUFFER_SIZE: 2026 if (hci_le_supported()){ 2027 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2028 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2029 hci_send_cmd(&hci_le_read_buffer_size_v2); 2030 } else { 2031 hci_send_cmd(&hci_le_read_buffer_size); 2032 } 2033 break; 2034 } 2035 2036 /* fall through */ 2037 2038 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2039 // skip write le host if not supported (e.g. on LE only EM9301) 2040 if (hci_le_supported() 2041 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2042 // LE Supported Host = 1, Simultaneous Host = 0 2043 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2044 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2045 break; 2046 } 2047 2048 /* fall through */ 2049 2050 case HCI_INIT_LE_SET_EVENT_MASK: 2051 if (hci_le_supported()){ 2052 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2053 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2054 break; 2055 } 2056 #endif 2057 2058 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2059 /* fall through */ 2060 2061 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2062 if (hci_le_supported() 2063 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2064 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2065 hci_send_cmd(&hci_le_read_maximum_data_length); 2066 break; 2067 } 2068 2069 /* fall through */ 2070 2071 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2072 if (hci_le_supported() 2073 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2074 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2075 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2076 break; 2077 } 2078 #endif 2079 2080 #ifdef ENABLE_LE_CENTRAL 2081 /* fall through */ 2082 2083 case HCI_INIT_READ_WHITE_LIST_SIZE: 2084 if (hci_le_supported()){ 2085 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2086 hci_send_cmd(&hci_le_read_white_list_size); 2087 break; 2088 } 2089 2090 #endif 2091 2092 #ifdef ENABLE_LE_PERIPHERAL 2093 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2094 /* fall through */ 2095 2096 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2097 if (hci_extended_advertising_supported()){ 2098 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2099 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2100 break; 2101 } 2102 #endif 2103 #endif 2104 /* fall through */ 2105 2106 case HCI_INIT_DONE: 2107 hci_stack->substate = HCI_INIT_DONE; 2108 // main init sequence complete 2109 #ifdef ENABLE_CLASSIC 2110 // check if initial Classic GAP Tasks are completed 2111 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2112 hci_run_gap_tasks_classic(); 2113 break; 2114 } 2115 #endif 2116 #ifdef ENABLE_BLE 2117 #ifdef ENABLE_LE_CENTRAL 2118 // check if initial LE GAP Tasks are completed 2119 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2120 hci_run_general_gap_le(); 2121 break; 2122 } 2123 #endif 2124 #endif 2125 hci_init_done(); 2126 break; 2127 2128 default: 2129 return; 2130 } 2131 } 2132 2133 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2134 bool command_completed = false; 2135 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2136 uint16_t opcode = little_endian_read_16(packet,3); 2137 if (opcode == hci_stack->last_cmd_opcode){ 2138 command_completed = true; 2139 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2140 } else { 2141 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2142 } 2143 } 2144 2145 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2146 uint8_t status = packet[2]; 2147 uint16_t opcode = little_endian_read_16(packet,4); 2148 if (opcode == hci_stack->last_cmd_opcode){ 2149 if (status){ 2150 command_completed = true; 2151 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2152 } else { 2153 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2154 } 2155 } else { 2156 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2157 } 2158 } 2159 #ifndef HAVE_HOST_CONTROLLER_API 2160 // Vendor == CSR 2161 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2162 // TODO: track actual command 2163 command_completed = true; 2164 } 2165 2166 // Vendor == Toshiba 2167 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2168 // TODO: track actual command 2169 command_completed = true; 2170 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2171 hci_stack->num_cmd_packets = 1; 2172 } 2173 #endif 2174 2175 return command_completed; 2176 } 2177 2178 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2179 2180 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2181 2182 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2183 2184 #ifndef HAVE_HOST_CONTROLLER_API 2185 2186 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2187 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2188 // 2189 // HCI Reset 2190 // Timeout 100 ms 2191 // HCI Reset 2192 // Command Complete Reset 2193 // HCI Read Local Version Information 2194 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2195 // hang... 2196 // 2197 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2198 if (!command_completed 2199 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2200 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2201 2202 uint16_t opcode = little_endian_read_16(packet,3); 2203 if (opcode == hci_reset.opcode){ 2204 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2205 return; 2206 } 2207 } 2208 2209 // CSR & H5 2210 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2211 if (!command_completed 2212 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2213 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2214 2215 uint16_t opcode = little_endian_read_16(packet,3); 2216 if (opcode == hci_reset.opcode){ 2217 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2218 return; 2219 } 2220 } 2221 2222 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2223 // fix: Correct substate and behave as command below 2224 if (command_completed){ 2225 switch (hci_stack->substate){ 2226 case HCI_INIT_SEND_RESET: 2227 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2228 break; 2229 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2230 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2231 break; 2232 default: 2233 break; 2234 } 2235 } 2236 2237 #endif 2238 2239 if (!command_completed) return; 2240 2241 bool need_baud_change = false; 2242 bool need_addr_change = false; 2243 2244 #ifndef HAVE_HOST_CONTROLLER_API 2245 need_baud_change = hci_stack->config 2246 && hci_stack->chipset 2247 && hci_stack->chipset->set_baudrate_command 2248 && hci_stack->hci_transport->set_baudrate 2249 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2250 2251 need_addr_change = hci_stack->custom_bd_addr_set 2252 && hci_stack->chipset 2253 && hci_stack->chipset->set_bd_addr_command; 2254 #endif 2255 2256 switch(hci_stack->substate){ 2257 2258 #ifndef HAVE_HOST_CONTROLLER_API 2259 case HCI_INIT_SEND_RESET: 2260 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2261 // fix: just correct substate and behave as command below 2262 2263 /* fall through */ 2264 #endif 2265 2266 case HCI_INIT_W4_SEND_RESET: 2267 btstack_run_loop_remove_timer(&hci_stack->timeout); 2268 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2269 return; 2270 2271 #ifndef HAVE_HOST_CONTROLLER_API 2272 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2273 // for STLC2500D, baud rate change already happened. 2274 // for others, baud rate gets changed now 2275 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2276 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2277 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2278 hci_stack->hci_transport->set_baudrate(baud_rate); 2279 } 2280 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2281 return; 2282 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2283 btstack_run_loop_remove_timer(&hci_stack->timeout); 2284 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2285 return; 2286 case HCI_INIT_W4_CUSTOM_INIT: 2287 // repeat custom init 2288 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2289 return; 2290 #endif 2291 2292 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2293 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2294 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2295 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2296 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2297 return; 2298 } 2299 if (need_addr_change){ 2300 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2301 return; 2302 } 2303 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2304 return; 2305 #ifndef HAVE_HOST_CONTROLLER_API 2306 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2307 if (need_baud_change){ 2308 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2309 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2310 hci_stack->hci_transport->set_baudrate(baud_rate); 2311 } 2312 if (need_addr_change){ 2313 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2314 return; 2315 } 2316 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2317 return; 2318 case HCI_INIT_W4_SET_BD_ADDR: 2319 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2320 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2321 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2322 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2323 return; 2324 } 2325 // skipping st warm boot 2326 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2327 return; 2328 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2329 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2330 return; 2331 #endif 2332 2333 case HCI_INIT_DONE: 2334 // set state if we came here by fall through 2335 hci_stack->substate = HCI_INIT_DONE; 2336 return; 2337 2338 default: 2339 break; 2340 } 2341 hci_initializing_next_state(); 2342 } 2343 2344 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2345 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2346 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2347 // check if we have been aware of the HCI connection 2348 switch (conn->state){ 2349 case SENT_CREATE_CONNECTION: 2350 case RECEIVED_CONNECTION_REQUEST: 2351 break; 2352 default: 2353 return; 2354 } 2355 2356 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2357 bd_addr_t bd_address; 2358 (void)memcpy(&bd_address, conn->address, 6); 2359 2360 #ifdef ENABLE_CLASSIC 2361 // cache needed data 2362 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2363 #endif 2364 2365 // connection failed, remove entry 2366 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2367 btstack_memory_hci_connection_free( conn ); 2368 2369 #ifdef ENABLE_CLASSIC 2370 // notify client if dedicated bonding 2371 if (notify_dedicated_bonding_failed){ 2372 log_info("hci notify_dedicated_bonding_failed"); 2373 hci_emit_dedicated_bonding_result(bd_address, status); 2374 } 2375 2376 // if authentication error, also delete link key 2377 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2378 gap_drop_link_key_for_bd_addr(bd_address); 2379 } 2380 #else 2381 UNUSED(status); 2382 #endif 2383 } 2384 2385 #ifdef ENABLE_CLASSIC 2386 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2387 // SSP Controller 2388 if (features[6] & (1 << 3)){ 2389 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2390 } 2391 // eSCO 2392 if (features[3] & (1<<7)){ 2393 conn->remote_supported_features[0] |= 1; 2394 } 2395 // Extended features 2396 if (features[7] & (1<<7)){ 2397 conn->remote_supported_features[0] |= 2; 2398 } 2399 } 2400 2401 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2402 // SSP Host 2403 if (features[0] & (1 << 0)){ 2404 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2405 } 2406 // SC Host 2407 if (features[0] & (1 << 3)){ 2408 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2409 } 2410 } 2411 2412 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2413 // SC Controller 2414 if (features[1] & (1 << 0)){ 2415 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2416 } 2417 } 2418 2419 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2420 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2421 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2422 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2423 if (conn->bonding_flags & BONDING_DEDICATED){ 2424 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2425 } 2426 } 2427 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2428 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2429 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2430 } 2431 2432 #endif 2433 2434 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2435 // handle BT initialization 2436 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2437 hci_initializing_event_handler(packet, size); 2438 } 2439 2440 // help with BT sleep 2441 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2442 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2443 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2444 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2445 hci_initializing_next_state(); 2446 } 2447 } 2448 2449 #ifdef ENABLE_CLASSIC 2450 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2451 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2452 conn->encryption_key_size = encryption_key_size; 2453 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2454 2455 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2456 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2457 conn->bonding_flags &= ~BONDING_DEDICATED; 2458 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2459 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2460 return; 2461 } 2462 2463 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2464 conn->requested_security_level = LEVEL_0; 2465 hci_emit_security_level(conn->con_handle, security_level); 2466 return; 2467 } 2468 2469 // Request remote features if not already done 2470 hci_trigger_remote_features_for_connection(conn); 2471 2472 // Request Authentication if not already done 2473 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2474 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2475 } 2476 #endif 2477 2478 static void hci_store_local_supported_commands(const uint8_t * packet){ 2479 // create mapping table 2480 #define X(name, offset, bit) { offset, bit }, 2481 static struct { 2482 uint8_t byte_offset; 2483 uint8_t bit_position; 2484 } supported_hci_commands_map [] = { 2485 SUPPORTED_HCI_COMMANDS 2486 }; 2487 #undef X 2488 2489 // create names for debug purposes 2490 #ifdef ENABLE_LOG_DEBUG 2491 #define X(name, offset, bit) #name, 2492 static const char * command_names[] = { 2493 SUPPORTED_HCI_COMMANDS 2494 }; 2495 #undef X 2496 #endif 2497 2498 hci_stack->local_supported_commands = 0; 2499 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2500 uint16_t i; 2501 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2502 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2503 #ifdef ENABLE_LOG_DEBUG 2504 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); 2505 #else 2506 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2507 #endif 2508 hci_stack->local_supported_commands |= (1LU << i); 2509 } 2510 } 2511 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2512 } 2513 2514 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2515 UNUSED(size); 2516 2517 uint16_t manufacturer; 2518 #ifdef ENABLE_CLASSIC 2519 hci_con_handle_t handle; 2520 hci_connection_t * conn; 2521 uint8_t status; 2522 #endif 2523 // get num cmd packets - limit to 1 to reduce complexity 2524 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2525 2526 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2527 switch (opcode){ 2528 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2529 if (packet[5]) break; 2530 // terminate, name 248 chars 2531 packet[6+248] = 0; 2532 log_info("local name: %s", &packet[6]); 2533 break; 2534 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2535 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2536 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2537 uint16_t acl_len = little_endian_read_16(packet, 6); 2538 uint16_t sco_len = packet[8]; 2539 2540 // determine usable ACL/SCO payload size 2541 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2542 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2543 2544 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2545 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2546 2547 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2548 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2549 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2550 } 2551 break; 2552 case HCI_OPCODE_HCI_READ_RSSI: 2553 if (packet[5] == ERROR_CODE_SUCCESS){ 2554 uint8_t event[5]; 2555 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2556 event[1] = 3; 2557 (void)memcpy(&event[2], &packet[6], 3); 2558 hci_emit_event(event, sizeof(event), 1); 2559 } 2560 break; 2561 #ifdef ENABLE_BLE 2562 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2563 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2564 hci_stack->le_iso_packets_total_num = packet[11]; 2565 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2566 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2567 2568 /* fall through */ 2569 2570 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2571 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2572 hci_stack->le_acl_packets_total_num = packet[8]; 2573 // determine usable ACL payload size 2574 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2575 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2576 } 2577 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); 2578 break; 2579 #endif 2580 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2581 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2582 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2583 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2584 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); 2585 break; 2586 #endif 2587 #ifdef ENABLE_LE_CENTRAL 2588 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2589 hci_stack->le_whitelist_capacity = packet[6]; 2590 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2591 break; 2592 #endif 2593 #ifdef ENABLE_LE_PERIPHERAL 2594 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2595 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2596 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2597 break; 2598 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2599 if (hci_stack->le_advertising_set_in_current_command != 0) { 2600 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2601 hci_stack->le_advertising_set_in_current_command = 0; 2602 if (advertising_set == NULL) break; 2603 uint8_t adv_status = packet[6]; 2604 uint8_t tx_power = packet[7]; 2605 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 }; 2606 if (adv_status == 0){ 2607 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2608 } 2609 hci_emit_event(event, sizeof(event), 1); 2610 } 2611 break; 2612 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2613 if (hci_stack->le_advertising_set_in_current_command != 0) { 2614 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2615 hci_stack->le_advertising_set_in_current_command = 0; 2616 if (advertising_set == NULL) break; 2617 uint8_t adv_status = packet[5]; 2618 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2619 if (adv_status == 0){ 2620 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2621 } 2622 hci_emit_event(event, sizeof(event), 1); 2623 } 2624 break; 2625 #endif 2626 #endif 2627 case HCI_OPCODE_HCI_READ_BD_ADDR: 2628 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2629 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)); 2630 #ifdef ENABLE_CLASSIC 2631 if (hci_stack->link_key_db){ 2632 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2633 } 2634 #endif 2635 break; 2636 #ifdef ENABLE_CLASSIC 2637 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2638 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2639 break; 2640 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2641 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2642 if (status == ERROR_CODE_SUCCESS) { 2643 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2644 } else { 2645 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2646 } 2647 break; 2648 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2649 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2650 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2651 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2652 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2653 hci_emit_event(event, sizeof(event), 1); 2654 } 2655 break; 2656 #endif 2657 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2658 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2659 2660 #ifdef ENABLE_CLASSIC 2661 // determine usable ACL packet types based on host buffer size and supported features 2662 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2663 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2664 #endif 2665 // Classic/LE 2666 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2667 break; 2668 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2669 manufacturer = little_endian_read_16(packet, 10); 2670 // map Cypress to Broadcom 2671 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2672 log_info("Treat Cypress as Broadcom"); 2673 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2674 little_endian_store_16(packet, 10, manufacturer); 2675 } 2676 hci_stack->manufacturer = manufacturer; 2677 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2678 break; 2679 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2680 hci_store_local_supported_commands(packet); 2681 break; 2682 #ifdef ENABLE_CLASSIC 2683 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2684 if (packet[5]) return; 2685 hci_stack->synchronous_flow_control_enabled = 1; 2686 break; 2687 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2688 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2689 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2690 conn = hci_connection_for_handle(handle); 2691 if (conn != NULL) { 2692 uint8_t key_size = 0; 2693 if (status == 0){ 2694 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2695 log_info("Handle %04x key Size: %u", handle, key_size); 2696 } else { 2697 key_size = 1; 2698 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2699 } 2700 hci_handle_read_encryption_key_size_complete(conn, key_size); 2701 } 2702 break; 2703 // assert pairing complete event is emitted. 2704 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2705 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2706 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2707 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2708 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2709 // lookup connection by gap pairing addr 2710 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2711 if (conn == NULL) break; 2712 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2713 break; 2714 2715 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2716 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2717 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2718 uint8_t event[67]; 2719 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2720 event[1] = 65; 2721 (void)memset(&event[2], 0, 65); 2722 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2723 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2724 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2725 event[2] = 3; 2726 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2727 } else { 2728 event[2] = 1; 2729 } 2730 } 2731 hci_emit_event(event, sizeof(event), 0); 2732 break; 2733 } 2734 2735 // note: only needed if user does not provide OOB data 2736 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2737 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2738 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2739 if (conn == NULL) break; 2740 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2741 break; 2742 #endif 2743 #endif 2744 #ifdef ENABLE_BLE 2745 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2746 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2747 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2748 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2749 if (status != ERROR_CODE_SUCCESS){ 2750 hci_iso_stream_requested_finalize(0xff); 2751 } 2752 break; 2753 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2754 // lookup BIG by state 2755 btstack_linked_list_iterator_t it; 2756 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2757 while (btstack_linked_list_iterator_has_next(&it)) { 2758 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2759 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2760 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2761 if (status == ERROR_CODE_SUCCESS){ 2762 big->state_vars.next_bis++; 2763 if (big->state_vars.next_bis == big->num_bis){ 2764 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2765 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2766 } else { 2767 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2768 } 2769 } else { 2770 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2771 big->state_vars.status = status; 2772 } 2773 return; 2774 } 2775 } 2776 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2777 while (btstack_linked_list_iterator_has_next(&it)) { 2778 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2779 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2780 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2781 if (status == ERROR_CODE_SUCCESS){ 2782 big_sync->state_vars.next_bis++; 2783 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2784 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2785 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2786 } else { 2787 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2788 } 2789 } else { 2790 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2791 big_sync->state_vars.status = status; 2792 } 2793 return; 2794 } 2795 } 2796 break; 2797 } 2798 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2799 // lookup BIG by state 2800 btstack_linked_list_iterator_t it; 2801 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2802 while (btstack_linked_list_iterator_has_next(&it)) { 2803 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2804 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED){ 2805 btstack_linked_list_iterator_remove(&it); 2806 switch (big_sync->state){ 2807 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2808 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2809 break; 2810 default: 2811 hci_emit_big_sync_stopped(big_sync); 2812 break; 2813 } 2814 return; 2815 } 2816 } 2817 break; 2818 } 2819 #endif 2820 #endif 2821 default: 2822 break; 2823 } 2824 } 2825 2826 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 2827 UNUSED(size); 2828 2829 // get num cmd packets - limit to 1 to reduce complexity 2830 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2831 2832 // get opcode and command status 2833 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 2834 2835 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 2836 uint8_t status = hci_event_command_status_get_status(packet); 2837 #endif 2838 2839 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2840 bd_addr_type_t addr_type; 2841 #endif 2842 2843 switch (opcode){ 2844 #ifdef ENABLE_CLASSIC 2845 case HCI_OPCODE_HCI_CREATE_CONNECTION: 2846 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 2847 #endif 2848 #ifdef ENABLE_LE_CENTRAL 2849 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 2850 #endif 2851 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2852 addr_type = hci_stack->outgoing_addr_type; 2853 2854 // reset outgoing address info 2855 memset(hci_stack->outgoing_addr, 0, 6); 2856 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2857 2858 // on error 2859 if (status != ERROR_CODE_SUCCESS){ 2860 #ifdef ENABLE_LE_CENTRAL 2861 if (hci_is_le_connection_type(addr_type)){ 2862 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2863 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2864 } 2865 #endif 2866 // error => outgoing connection failed 2867 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2868 if (conn != NULL){ 2869 hci_handle_connection_failed(conn, status); 2870 } 2871 } 2872 break; 2873 #endif 2874 #ifdef ENABLE_CLASSIC 2875 case HCI_OPCODE_HCI_INQUIRY: 2876 if (status == ERROR_CODE_SUCCESS) { 2877 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2878 } else { 2879 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2880 } 2881 break; 2882 #endif 2883 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2884 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2885 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2886 if (status == ERROR_CODE_SUCCESS){ 2887 hci_iso_stream_requested_confirm(0xff); 2888 } else { 2889 hci_iso_stream_requested_finalize(0xff); 2890 } 2891 break; 2892 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 2893 default: 2894 break; 2895 } 2896 } 2897 2898 #ifdef ENABLE_BLE 2899 static void event_handle_le_connection_complete(const uint8_t * packet){ 2900 bd_addr_t addr; 2901 bd_addr_type_t addr_type; 2902 hci_connection_t * conn; 2903 2904 // Connection management 2905 reverse_bd_addr(&packet[8], addr); 2906 addr_type = (bd_addr_type_t)packet[7]; 2907 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2908 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2909 2910 #ifdef ENABLE_LE_CENTRAL 2911 // handle error: error is reported only to the initiator -> outgoing connection 2912 if (packet[3]){ 2913 2914 // handle cancelled outgoing connection 2915 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2916 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2917 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2918 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2919 // reset state 2920 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2921 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2922 // get outgoing connection conn struct for direct connect 2923 conn = gap_get_outgoing_connection(); 2924 } 2925 2926 // outgoing le connection establishment is done 2927 if (conn){ 2928 // remove entry 2929 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2930 btstack_memory_hci_connection_free( conn ); 2931 } 2932 return; 2933 } 2934 #endif 2935 2936 // on success, both hosts receive connection complete event 2937 if (packet[6] == HCI_ROLE_MASTER){ 2938 #ifdef ENABLE_LE_CENTRAL 2939 // if we're master on an le connection, it was an outgoing connection and we're done with it 2940 // note: no hci_connection_t object exists yet for connect with whitelist 2941 if (hci_is_le_connection_type(addr_type)){ 2942 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2943 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2944 } 2945 #endif 2946 } else { 2947 #ifdef ENABLE_LE_PERIPHERAL 2948 // if we're slave, it was an incoming connection, advertisements have stopped 2949 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 2950 #endif 2951 } 2952 2953 // LE connections are auto-accepted, so just create a connection if there isn't one already 2954 if (!conn){ 2955 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2956 } 2957 2958 // no memory, sorry. 2959 if (!conn){ 2960 return; 2961 } 2962 2963 conn->state = OPEN; 2964 conn->role = packet[6]; 2965 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2966 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2967 2968 #ifdef ENABLE_LE_PERIPHERAL 2969 if (packet[6] == HCI_ROLE_SLAVE){ 2970 hci_update_advertisements_enabled_for_current_roles(); 2971 } 2972 #endif 2973 2974 // init unenhanced att bearer mtu 2975 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2976 conn->att_connection.mtu_exchanged = false; 2977 2978 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2979 2980 // restart timer 2981 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2982 // btstack_run_loop_add_timer(&conn->timeout); 2983 2984 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2985 2986 hci_emit_nr_connections_changed(); 2987 } 2988 #endif 2989 2990 #ifdef ENABLE_CLASSIC 2991 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){ 2992 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 2993 // LEVEL_4 is tested by l2cap 2994 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 2995 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 2996 if (level >= LEVEL_3){ 2997 // MITM not possible without keyboard or display 2998 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 2999 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3000 3001 // MITM possible if one side has keyboard and the other has keyboard or display 3002 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3003 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3004 3005 // MITM not possible if one side has only display and other side has no keyboard 3006 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3007 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3008 } 3009 // LEVEL 2 requires SSP, which is a given 3010 return true; 3011 } 3012 3013 static bool btstack_is_null(uint8_t * data, uint16_t size){ 3014 uint16_t i; 3015 for (i=0; i < size ; i++){ 3016 if (data[i] != 0) { 3017 return false; 3018 } 3019 } 3020 return true; 3021 } 3022 3023 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3024 // get requested security level 3025 gap_security_level_t requested_security_level = conn->requested_security_level; 3026 if (hci_stack->gap_secure_connections_only_mode){ 3027 requested_security_level = LEVEL_4; 3028 } 3029 3030 // assess security: LEVEL 4 requires SC 3031 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3032 if ((requested_security_level == LEVEL_4) && 3033 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3034 !hci_remote_sc_enabled(conn)){ 3035 log_info("Level 4 required, but SC not supported -> abort"); 3036 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3037 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3038 return; 3039 } 3040 3041 // assess security based on io capabilities 3042 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3043 // responder: fully validate io caps of both sides as well as OOB data 3044 bool security_possible = false; 3045 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3046 3047 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3048 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3049 // so we merge the OOB data availability 3050 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3051 if (conn->classic_oob_c_192 != NULL){ 3052 have_oob_data |= 1; 3053 } 3054 if (conn->classic_oob_c_256 != NULL){ 3055 have_oob_data |= 2; 3056 } 3057 // for up to Level 3, either P-192 as well as P-256 will do 3058 // 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 3059 // if remote does not SC, we should not receive P-256 data either 3060 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3061 security_possible = true; 3062 } 3063 // for Level 4, P-256 is needed 3064 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3065 security_possible = true; 3066 } 3067 #endif 3068 3069 if (security_possible == false){ 3070 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3071 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3072 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3073 return; 3074 } 3075 } else { 3076 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3077 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3078 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3079 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3080 log_info("Level 3+ required, but no input/output -> abort"); 3081 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3082 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3083 return; 3084 } 3085 #endif 3086 #endif 3087 } 3088 3089 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3090 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3091 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3092 } else { 3093 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3094 } 3095 #endif 3096 } 3097 3098 #endif 3099 3100 static void event_handler(uint8_t *packet, uint16_t size){ 3101 3102 uint16_t event_length = packet[1]; 3103 3104 // assert packet is complete 3105 if (size != (event_length + 2u)){ 3106 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3107 return; 3108 } 3109 3110 hci_con_handle_t handle; 3111 hci_connection_t * conn; 3112 int i; 3113 3114 #ifdef ENABLE_CLASSIC 3115 hci_link_type_t link_type; 3116 bd_addr_t addr; 3117 bd_addr_type_t addr_type; 3118 #endif 3119 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3120 hci_iso_stream_t * iso_stream; 3121 le_audio_big_t * big; 3122 le_audio_big_sync_t * big_sync; 3123 #endif 3124 3125 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3126 3127 switch (hci_event_packet_get_type(packet)) { 3128 3129 case HCI_EVENT_COMMAND_COMPLETE: 3130 handle_command_complete_event(packet, size); 3131 break; 3132 3133 case HCI_EVENT_COMMAND_STATUS: 3134 handle_command_status_event(packet, size); 3135 break; 3136 3137 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3138 if (size < 3) return; 3139 uint16_t num_handles = packet[2]; 3140 if (size != (3u + num_handles * 4u)) return; 3141 uint16_t offset = 3; 3142 for (i=0; i<num_handles;i++){ 3143 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3144 offset += 2u; 3145 uint16_t num_packets = little_endian_read_16(packet, offset); 3146 offset += 2u; 3147 3148 conn = hci_connection_for_handle(handle); 3149 if (conn != NULL) { 3150 3151 if (conn->num_packets_sent >= num_packets) { 3152 conn->num_packets_sent -= num_packets; 3153 } else { 3154 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3155 conn->num_packets_sent = 0; 3156 } 3157 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3158 } 3159 3160 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3161 if (conn == NULL){ 3162 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3163 if (iso_stream != NULL){ 3164 if (iso_stream->num_packets_sent >= num_packets) { 3165 iso_stream->num_packets_sent -= num_packets; 3166 } else { 3167 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3168 iso_stream->num_packets_sent = 0; 3169 } 3170 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3171 num_packets, handle, iso_stream->num_packets_sent); 3172 } 3173 } 3174 #endif 3175 3176 #ifdef ENABLE_CLASSIC 3177 // For SCO, we do the can_send_now_check here 3178 hci_notify_if_sco_can_send_now(); 3179 #endif 3180 } 3181 break; 3182 } 3183 3184 #ifdef ENABLE_CLASSIC 3185 case HCI_EVENT_FLUSH_OCCURRED: 3186 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3187 handle = hci_event_flush_occurred_get_handle(packet); 3188 conn = hci_connection_for_handle(handle); 3189 if (conn) { 3190 log_info("Flush occurred, disconnect 0x%04x", handle); 3191 conn->state = SEND_DISCONNECT; 3192 } 3193 break; 3194 3195 case HCI_EVENT_INQUIRY_COMPLETE: 3196 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3197 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3198 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3199 hci_emit_event(event, sizeof(event), 1); 3200 } 3201 break; 3202 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3203 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3204 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3205 } 3206 break; 3207 case HCI_EVENT_CONNECTION_REQUEST: 3208 reverse_bd_addr(&packet[2], addr); 3209 link_type = (hci_link_type_t) packet[11]; 3210 3211 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3212 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3213 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3214 bd_addr_copy(hci_stack->decline_addr, addr); 3215 break; 3216 } 3217 3218 if (hci_stack->gap_classic_accept_callback != NULL){ 3219 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3220 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3221 bd_addr_copy(hci_stack->decline_addr, addr); 3222 break; 3223 } 3224 } 3225 3226 // TODO: eval COD 8-10 3227 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3228 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3229 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3230 if (!conn) { 3231 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3232 } 3233 if (!conn) { 3234 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3235 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3236 bd_addr_copy(hci_stack->decline_addr, addr); 3237 hci_run(); 3238 // avoid event to higher layer 3239 return; 3240 } 3241 conn->role = HCI_ROLE_SLAVE; 3242 conn->state = RECEIVED_CONNECTION_REQUEST; 3243 // store info about eSCO 3244 if (link_type == HCI_LINK_TYPE_ESCO){ 3245 conn->remote_supported_features[0] |= 1; 3246 } 3247 hci_run(); 3248 break; 3249 3250 case HCI_EVENT_CONNECTION_COMPLETE: 3251 // Connection management 3252 reverse_bd_addr(&packet[5], addr); 3253 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3254 addr_type = BD_ADDR_TYPE_ACL; 3255 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3256 if (conn) { 3257 if (!packet[2]){ 3258 conn->state = OPEN; 3259 conn->con_handle = little_endian_read_16(packet, 3); 3260 3261 // trigger write supervision timeout if we're master 3262 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3263 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3264 } 3265 3266 // trigger write automatic flush timeout 3267 if (hci_stack->automatic_flush_timeout != 0){ 3268 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3269 } 3270 3271 // restart timer 3272 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3273 btstack_run_loop_add_timer(&conn->timeout); 3274 3275 // trigger remote features for dedicated bonding 3276 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3277 hci_trigger_remote_features_for_connection(conn); 3278 } 3279 3280 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3281 3282 hci_emit_nr_connections_changed(); 3283 } else { 3284 // connection failed 3285 hci_handle_connection_failed(conn, packet[2]); 3286 } 3287 } 3288 break; 3289 3290 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3291 reverse_bd_addr(&packet[5], addr); 3292 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3293 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3294 if (packet[2]){ 3295 // connection failed 3296 if (conn){ 3297 hci_handle_connection_failed(conn, packet[2]); 3298 } 3299 break; 3300 } 3301 if (!conn) { 3302 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3303 } 3304 if (!conn) { 3305 break; 3306 } 3307 conn->state = OPEN; 3308 conn->con_handle = little_endian_read_16(packet, 3); 3309 3310 #ifdef ENABLE_SCO_OVER_HCI 3311 // update SCO 3312 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3313 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3314 } 3315 // trigger can send now 3316 if (hci_have_usb_transport()){ 3317 hci_stack->sco_can_send_now = true; 3318 } 3319 #endif 3320 #ifdef HAVE_SCO_TRANSPORT 3321 // configure sco transport 3322 if (hci_stack->sco_transport != NULL){ 3323 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3324 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3325 } 3326 #endif 3327 break; 3328 3329 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3330 handle = little_endian_read_16(packet, 3); 3331 conn = hci_connection_for_handle(handle); 3332 if (!conn) break; 3333 if (!packet[2]){ 3334 const uint8_t * features = &packet[5]; 3335 hci_handle_remote_features_page_0(conn, features); 3336 3337 // read extended features if possible 3338 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3339 && ((conn->remote_supported_features[0] & 2) != 0)) { 3340 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3341 break; 3342 } 3343 } 3344 hci_handle_remote_features_received(conn); 3345 break; 3346 3347 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3348 handle = little_endian_read_16(packet, 3); 3349 conn = hci_connection_for_handle(handle); 3350 if (!conn) break; 3351 // status = ok, page = 1 3352 if (!packet[2]) { 3353 uint8_t page_number = packet[5]; 3354 uint8_t maximum_page_number = packet[6]; 3355 const uint8_t * features = &packet[7]; 3356 bool done = false; 3357 switch (page_number){ 3358 case 1: 3359 hci_handle_remote_features_page_1(conn, features); 3360 if (maximum_page_number >= 2){ 3361 // get Secure Connections (Controller) from Page 2 if available 3362 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3363 } else { 3364 // otherwise, assume SC (Controller) == SC (Host) 3365 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3366 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3367 } 3368 done = true; 3369 } 3370 break; 3371 case 2: 3372 hci_handle_remote_features_page_2(conn, features); 3373 done = true; 3374 break; 3375 default: 3376 break; 3377 } 3378 if (!done) break; 3379 } 3380 hci_handle_remote_features_received(conn); 3381 break; 3382 3383 case HCI_EVENT_LINK_KEY_REQUEST: 3384 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3385 hci_event_link_key_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 // lookup link key in db if not cached 3390 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3391 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3392 } 3393 3394 // response sent by hci_run() 3395 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3396 #endif 3397 break; 3398 3399 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3400 hci_event_link_key_request_get_bd_addr(packet, addr); 3401 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3402 if (!conn) break; 3403 3404 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3405 3406 // CVE-2020-26555: ignore NULL link key 3407 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3408 if (btstack_is_null(&packet[8], 16)) break; 3409 3410 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3411 // Change Connection Encryption keeps link key type 3412 if (link_key_type != CHANGED_COMBINATION_KEY){ 3413 conn->link_key_type = link_key_type; 3414 } 3415 3416 // cache link key. link keys stored in little-endian format for legacy reasons 3417 memcpy(&conn->link_key, &packet[8], 16); 3418 3419 // only store link key: 3420 // - if bondable enabled 3421 if (hci_stack->bondable == false) break; 3422 // - if security level sufficient 3423 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3424 // - for SSP, also check if remote side requested bonding as well 3425 if (conn->link_key_type != COMBINATION_KEY){ 3426 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3427 if (!remote_bonding){ 3428 break; 3429 } 3430 } 3431 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3432 break; 3433 } 3434 3435 case HCI_EVENT_PIN_CODE_REQUEST: 3436 hci_event_pin_code_request_get_bd_addr(packet, addr); 3437 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3438 if (!conn) break; 3439 3440 hci_pairing_started(conn, false); 3441 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3442 if (!hci_stack->bondable ){ 3443 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3444 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3445 hci_run(); 3446 return; 3447 } 3448 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3449 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3450 log_info("Level 4 required, but SC not supported -> abort"); 3451 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3452 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3453 hci_run(); 3454 return; 3455 } 3456 break; 3457 3458 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3459 hci_event_io_capability_response_get_bd_addr(packet, addr); 3460 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3461 if (!conn) break; 3462 3463 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3464 hci_pairing_started(conn, true); 3465 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3466 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3467 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3468 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3469 #endif 3470 break; 3471 3472 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3473 hci_event_io_capability_response_get_bd_addr(packet, addr); 3474 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3475 if (!conn) break; 3476 3477 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3478 hci_connection_timestamp(conn); 3479 hci_pairing_started(conn, true); 3480 break; 3481 3482 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3483 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3484 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3485 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3486 if (!conn) break; 3487 3488 hci_connection_timestamp(conn); 3489 3490 hci_pairing_started(conn, true); 3491 3492 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3493 break; 3494 #endif 3495 3496 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3497 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3498 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3499 if (!conn) break; 3500 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3501 if (hci_stack->ssp_auto_accept){ 3502 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3503 }; 3504 } else { 3505 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3506 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3507 // don't forward event to app 3508 hci_run(); 3509 return; 3510 } 3511 break; 3512 3513 case HCI_EVENT_USER_PASSKEY_REQUEST: 3514 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3515 if (hci_stack->ssp_auto_accept){ 3516 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3517 }; 3518 break; 3519 3520 case HCI_EVENT_MODE_CHANGE: 3521 handle = hci_event_mode_change_get_handle(packet); 3522 conn = hci_connection_for_handle(handle); 3523 if (!conn) break; 3524 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3525 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3526 break; 3527 #endif 3528 3529 case HCI_EVENT_ENCRYPTION_CHANGE: 3530 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3531 handle = hci_event_encryption_change_get_connection_handle(packet); 3532 conn = hci_connection_for_handle(handle); 3533 if (!conn) break; 3534 if (hci_event_encryption_change_get_status(packet) == 0u) { 3535 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3536 if (encryption_enabled){ 3537 if (hci_is_le_connection(conn)){ 3538 // For LE, we accept connection as encrypted 3539 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3540 } 3541 #ifdef ENABLE_CLASSIC 3542 else { 3543 3544 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3545 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3546 bool connected_uses_aes_ccm = encryption_enabled == 2; 3547 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3548 log_info("SC during pairing, but only E0 now -> abort"); 3549 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3550 break; 3551 } 3552 3553 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3554 if (connected_uses_aes_ccm){ 3555 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3556 } 3557 3558 #ifdef ENABLE_TESTING_SUPPORT 3559 // work around for issue with PTS dongle 3560 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3561 #endif 3562 // validate encryption key size 3563 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3564 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3565 // already got encryption key size 3566 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3567 } else { 3568 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3569 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3570 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3571 } else { 3572 // if not, pretend everything is perfect 3573 hci_handle_read_encryption_key_size_complete(conn, 16); 3574 } 3575 } 3576 } 3577 #endif 3578 } else { 3579 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3580 } 3581 } else { 3582 uint8_t status = hci_event_encryption_change_get_status(packet); 3583 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3584 conn->bonding_flags &= ~BONDING_DEDICATED; 3585 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3586 conn->bonding_status = status; 3587 } 3588 } 3589 3590 break; 3591 3592 #ifdef ENABLE_CLASSIC 3593 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3594 handle = hci_event_authentication_complete_get_connection_handle(packet); 3595 conn = hci_connection_for_handle(handle); 3596 if (!conn) break; 3597 3598 // clear authentication active flag 3599 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3600 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3601 3602 // authenticated only if auth status == 0 3603 if (hci_event_authentication_complete_get_status(packet) == 0){ 3604 // authenticated 3605 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3606 3607 // If not already encrypted, start encryption 3608 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3609 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3610 break; 3611 } 3612 } 3613 3614 // emit updated security level 3615 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3616 break; 3617 3618 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3619 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3620 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3621 if (!conn) break; 3622 3623 // treat successfully paired connection as authenticated 3624 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3625 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3626 } 3627 3628 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3629 break; 3630 #endif 3631 3632 // HCI_EVENT_DISCONNECTION_COMPLETE 3633 // has been split, to first notify stack before shutting connection down 3634 // see end of function, too. 3635 case HCI_EVENT_DISCONNECTION_COMPLETE: 3636 if (packet[2]) break; // status != 0 3637 handle = little_endian_read_16(packet, 3); 3638 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3639 if (hci_stack->acl_fragmentation_total_size > 0u) { 3640 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3641 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3642 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3643 hci_stack->acl_fragmentation_total_size = 0; 3644 hci_stack->acl_fragmentation_pos = 0; 3645 if (release_buffer){ 3646 hci_release_packet_buffer(); 3647 } 3648 } 3649 } 3650 3651 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3652 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3653 if (hci_stack->iso_fragmentation_total_size > 0u) { 3654 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3655 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3656 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3657 hci_stack->iso_fragmentation_total_size = 0; 3658 hci_stack->iso_fragmentation_pos = 0; 3659 if (release_buffer){ 3660 hci_release_packet_buffer(); 3661 } 3662 } 3663 } 3664 3665 // finalize iso stream if handle matches 3666 iso_stream = hci_iso_stream_for_con_handle(handle); 3667 if (iso_stream != NULL){ 3668 hci_iso_stream_finalize(iso_stream); 3669 break; 3670 } 3671 #endif 3672 3673 conn = hci_connection_for_handle(handle); 3674 if (!conn) break; 3675 #ifdef ENABLE_CLASSIC 3676 // pairing failed if it was ongoing 3677 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3678 #endif 3679 3680 // emit dedicatd bonding event 3681 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3682 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3683 } 3684 3685 // mark connection for shutdown, stop timers, reset state 3686 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3687 hci_connection_stop_timer(conn); 3688 hci_connection_init(conn); 3689 3690 #ifdef ENABLE_BLE 3691 #ifdef ENABLE_LE_PERIPHERAL 3692 // re-enable advertisements for le connections if active 3693 if (hci_is_le_connection(conn)){ 3694 hci_update_advertisements_enabled_for_current_roles(); 3695 } 3696 #endif 3697 #endif 3698 break; 3699 3700 case HCI_EVENT_HARDWARE_ERROR: 3701 log_error("Hardware Error: 0x%02x", packet[2]); 3702 if (hci_stack->hardware_error_callback){ 3703 (*hci_stack->hardware_error_callback)(packet[2]); 3704 } else { 3705 // if no special requests, just reboot stack 3706 hci_power_control_off(); 3707 hci_power_control_on(); 3708 } 3709 break; 3710 3711 #ifdef ENABLE_CLASSIC 3712 case HCI_EVENT_ROLE_CHANGE: 3713 if (packet[2]) break; // status != 0 3714 reverse_bd_addr(&packet[3], addr); 3715 addr_type = BD_ADDR_TYPE_ACL; 3716 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3717 if (!conn) break; 3718 conn->role = packet[9]; 3719 break; 3720 #endif 3721 3722 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3723 // release packet buffer only for asynchronous transport and if there are not further fragments 3724 if (hci_transport_synchronous()) { 3725 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3726 return; // instead of break: to avoid re-entering hci_run() 3727 } 3728 hci_stack->acl_fragmentation_tx_active = 0; 3729 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3730 hci_stack->iso_fragmentation_tx_active = 0; 3731 if (hci_stack->iso_fragmentation_total_size) break; 3732 #endif 3733 if (hci_stack->acl_fragmentation_total_size) break; 3734 hci_release_packet_buffer(); 3735 3736 // L2CAP receives this event via the hci_emit_event below 3737 3738 #ifdef ENABLE_CLASSIC 3739 // For SCO, we do the can_send_now_check here 3740 hci_notify_if_sco_can_send_now(); 3741 #endif 3742 break; 3743 3744 #ifdef ENABLE_CLASSIC 3745 case HCI_EVENT_SCO_CAN_SEND_NOW: 3746 // For SCO, we do the can_send_now_check here 3747 hci_stack->sco_can_send_now = true; 3748 hci_notify_if_sco_can_send_now(); 3749 return; 3750 3751 // explode inquriy results for easier consumption 3752 case HCI_EVENT_INQUIRY_RESULT: 3753 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3754 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3755 gap_inquiry_explode(packet, size); 3756 break; 3757 #endif 3758 3759 #ifdef ENABLE_BLE 3760 case HCI_EVENT_LE_META: 3761 switch (packet[2]){ 3762 #ifdef ENABLE_LE_CENTRAL 3763 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3764 if (!hci_stack->le_scanning_enabled) break; 3765 le_handle_advertisement_report(packet, size); 3766 break; 3767 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3768 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3769 if (!hci_stack->le_scanning_enabled) break; 3770 le_handle_extended_advertisement_report(packet, size); 3771 break; 3772 #endif 3773 #endif 3774 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3775 event_handle_le_connection_complete(packet); 3776 break; 3777 3778 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3779 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3780 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3781 conn = hci_connection_for_handle(handle); 3782 if (!conn) break; 3783 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3784 break; 3785 3786 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3787 // connection 3788 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3789 conn = hci_connection_for_handle(handle); 3790 if (conn) { 3791 // read arguments 3792 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3793 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3794 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3795 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3796 3797 // validate against current connection parameter range 3798 le_connection_parameter_range_t existing_range; 3799 gap_get_connection_parameter_range(&existing_range); 3800 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3801 if (update_parameter){ 3802 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3803 conn->le_conn_interval_min = le_conn_interval_min; 3804 conn->le_conn_interval_max = le_conn_interval_max; 3805 conn->le_conn_latency = le_conn_latency; 3806 conn->le_supervision_timeout = le_supervision_timeout; 3807 } else { 3808 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3809 } 3810 } 3811 break; 3812 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3813 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3814 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3815 conn = hci_connection_for_handle(handle); 3816 if (conn) { 3817 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3818 } 3819 break; 3820 #endif 3821 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3822 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 3823 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 3824 iso_stream = hci_iso_stream_for_con_handle(handle); 3825 if (iso_stream){ 3826 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 3827 if (status == ERROR_CODE_SUCCESS){ 3828 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3829 } else { 3830 hci_iso_stream_finalize(iso_stream); 3831 } 3832 } 3833 break; 3834 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 3835 big = hci_big_for_handle(packet[4]); 3836 if (big != NULL){ 3837 uint8_t status = packet[3]; 3838 if (status == ERROR_CODE_SUCCESS){ 3839 // store bis_con_handles and trigger iso path setup 3840 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 3841 uint8_t i; 3842 for (i=0;i<num_bis;i++){ 3843 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 3844 big->bis_con_handles[i] = bis_handle; 3845 // assign bis handle 3846 btstack_linked_list_iterator_t it; 3847 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3848 while (btstack_linked_list_iterator_has_next(&it)){ 3849 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3850 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 3851 (iso_stream->big_handle == big->big_handle)){ 3852 iso_stream->con_handle = bis_handle; 3853 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3854 } 3855 } 3856 } 3857 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3858 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3859 big->state_vars.next_bis = 0; 3860 } 3861 } else { 3862 // create BIG failed or has been stopped by us 3863 hci_iso_stream_requested_finalize(big->big_handle); 3864 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3865 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3866 hci_emit_big_created(big, status); 3867 } else { 3868 hci_emit_big_terminated(big); 3869 } 3870 } 3871 } 3872 break; 3873 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 3874 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 3875 if (big != NULL){ 3876 // finalize associated ISO streams 3877 btstack_linked_list_iterator_t it; 3878 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3879 while (btstack_linked_list_iterator_has_next(&it)){ 3880 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3881 if (iso_stream->big_handle == big->big_handle){ 3882 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->big_handle, iso_stream->con_handle); 3883 btstack_linked_list_iterator_remove(&it); 3884 btstack_memory_hci_iso_stream_free(iso_stream); 3885 } 3886 } 3887 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3888 switch (big->state){ 3889 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3890 hci_emit_big_created(big, big->state_vars.status); 3891 break; 3892 default: 3893 hci_emit_big_terminated(big); 3894 break; 3895 } 3896 } 3897 break; 3898 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 3899 big_sync = hci_big_sync_for_handle(packet[4]); 3900 if (big_sync != NULL){ 3901 uint8_t status = packet[3]; 3902 if (status == ERROR_CODE_SUCCESS){ 3903 // store bis_con_handles and trigger iso path setup 3904 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 3905 uint8_t i; 3906 for (i=0;i<num_bis;i++){ 3907 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 3908 } 3909 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3910 // trigger iso path setup 3911 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3912 big_sync->state_vars.next_bis = 0; 3913 } 3914 } else { 3915 // create BIG Sync failed or has been stopped by us 3916 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3917 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3918 hci_emit_big_sync_created(big_sync, status); 3919 } else { 3920 hci_emit_big_sync_stopped(big_sync); 3921 } 3922 } 3923 } 3924 break; 3925 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 3926 big_sync = hci_big_sync_for_handle(packet[4]); 3927 if (big_sync != NULL){ 3928 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3929 hci_emit_big_sync_stopped(big_sync); 3930 } 3931 break; 3932 #endif 3933 default: 3934 break; 3935 } 3936 break; 3937 #endif 3938 case HCI_EVENT_VENDOR_SPECIFIC: 3939 // Vendor specific commands often create vendor specific event instead of num completed packets 3940 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 3941 switch (hci_stack->manufacturer){ 3942 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 3943 hci_stack->num_cmd_packets = 1; 3944 break; 3945 default: 3946 break; 3947 } 3948 break; 3949 default: 3950 break; 3951 } 3952 3953 handle_event_for_current_stack_state(packet, size); 3954 3955 // notify upper stack 3956 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 3957 3958 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 3959 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 3960 handle = little_endian_read_16(packet, 3); 3961 hci_connection_t * aConn = hci_connection_for_handle(handle); 3962 // discard connection if app did not trigger a reconnect in the event handler 3963 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 3964 hci_shutdown_connection(aConn); 3965 } 3966 } 3967 3968 // execute main loop 3969 hci_run(); 3970 } 3971 3972 #ifdef ENABLE_CLASSIC 3973 3974 #ifdef ENABLE_SCO_OVER_HCI 3975 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 3976 static void sco_schedule_tx(hci_connection_t * conn); 3977 3978 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 3979 log_debug("SCO TX Timeout"); 3980 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 3981 hci_connection_t * conn = hci_connection_for_handle(con_handle); 3982 if (!conn) return; 3983 3984 // trigger send 3985 conn->sco_tx_ready = 1; 3986 // extra packet if CVSD but SCO buffer is too short 3987 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 3988 conn->sco_tx_ready++; 3989 } 3990 hci_notify_if_sco_can_send_now(); 3991 } 3992 3993 3994 #define SCO_TX_AFTER_RX_MS (6) 3995 3996 static void sco_schedule_tx(hci_connection_t * conn){ 3997 3998 uint32_t now = btstack_run_loop_get_time_ms(); 3999 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4000 int time_delta_ms = sco_tx_ms - now; 4001 4002 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4003 4004 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4005 btstack_run_loop_remove_timer(timer); 4006 btstack_run_loop_set_timer(timer, time_delta_ms); 4007 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4008 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4009 btstack_run_loop_add_timer(timer); 4010 } 4011 #endif 4012 4013 static void sco_handler(uint8_t * packet, uint16_t size){ 4014 // lookup connection struct 4015 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4016 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4017 if (!conn) return; 4018 4019 #ifdef ENABLE_SCO_OVER_HCI 4020 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4021 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4022 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4023 packet[2] = 0x3c; 4024 memmove(&packet[3], &packet[23], 63); 4025 size = 63; 4026 } 4027 } 4028 4029 if (hci_have_usb_transport()){ 4030 // Nothing to do 4031 } else { 4032 // 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); 4033 if (hci_stack->synchronous_flow_control_enabled == 0){ 4034 uint32_t now = btstack_run_loop_get_time_ms(); 4035 4036 if (!conn->sco_rx_valid){ 4037 // ignore first 10 packets 4038 conn->sco_rx_count++; 4039 // log_debug("sco rx count %u", conn->sco_rx_count); 4040 if (conn->sco_rx_count == 10) { 4041 // use first timestamp as is and pretent it just started 4042 conn->sco_rx_ms = now; 4043 conn->sco_rx_valid = 1; 4044 conn->sco_rx_count = 0; 4045 sco_schedule_tx(conn); 4046 } 4047 } else { 4048 // track expected arrival timme 4049 conn->sco_rx_count++; 4050 conn->sco_rx_ms += 7; 4051 int delta = (int32_t) (now - conn->sco_rx_ms); 4052 if (delta > 0){ 4053 conn->sco_rx_ms++; 4054 } 4055 // log_debug("sco rx %u", conn->sco_rx_ms); 4056 sco_schedule_tx(conn); 4057 } 4058 } 4059 } 4060 #endif 4061 4062 // deliver to app 4063 if (hci_stack->sco_packet_handler) { 4064 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4065 } 4066 4067 #ifdef HAVE_SCO_TRANSPORT 4068 // We can send one packet for each received packet 4069 conn->sco_tx_ready++; 4070 hci_notify_if_sco_can_send_now(); 4071 #endif 4072 4073 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4074 conn->num_packets_completed++; 4075 hci_stack->host_completed_packets = 1; 4076 hci_run(); 4077 #endif 4078 } 4079 #endif 4080 4081 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4082 hci_dump_packet(packet_type, 1, packet, size); 4083 switch (packet_type) { 4084 case HCI_EVENT_PACKET: 4085 event_handler(packet, size); 4086 break; 4087 case HCI_ACL_DATA_PACKET: 4088 acl_handler(packet, size); 4089 break; 4090 #ifdef ENABLE_CLASSIC 4091 case HCI_SCO_DATA_PACKET: 4092 sco_handler(packet, size); 4093 break; 4094 #endif 4095 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4096 case HCI_ISO_DATA_PACKET: 4097 hci_iso_packet_handler(packet, size); 4098 break; 4099 #endif 4100 default: 4101 break; 4102 } 4103 } 4104 4105 /** 4106 * @brief Add event packet handler. 4107 */ 4108 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4109 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4110 } 4111 4112 /** 4113 * @brief Remove event packet handler. 4114 */ 4115 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4116 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4117 } 4118 4119 /** Register HCI packet handlers */ 4120 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4121 hci_stack->acl_packet_handler = handler; 4122 } 4123 4124 #ifdef ENABLE_CLASSIC 4125 /** 4126 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4127 */ 4128 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4129 hci_stack->sco_packet_handler = handler; 4130 } 4131 #endif 4132 4133 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4134 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4135 hci_stack->iso_packet_handler = handler; 4136 } 4137 #endif 4138 4139 static void hci_state_reset(void){ 4140 // no connections yet 4141 hci_stack->connections = NULL; 4142 4143 // keep discoverable/connectable as this has been requested by the client(s) 4144 // hci_stack->discoverable = 0; 4145 // hci_stack->connectable = 0; 4146 // hci_stack->bondable = 1; 4147 // hci_stack->own_addr_type = 0; 4148 4149 // buffer is free 4150 hci_stack->hci_packet_buffer_reserved = false; 4151 4152 // no pending cmds 4153 hci_stack->decline_reason = 0; 4154 4155 hci_stack->secure_connections_active = false; 4156 4157 #ifdef ENABLE_CLASSIC 4158 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4159 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4160 4161 hci_stack->gap_tasks_classic = 4162 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4163 GAP_TASK_SET_CLASS_OF_DEVICE | 4164 GAP_TASK_SET_LOCAL_NAME | 4165 GAP_TASK_SET_EIR_DATA | 4166 GAP_TASK_WRITE_SCAN_ENABLE | 4167 GAP_TASK_WRITE_PAGE_TIMEOUT; 4168 #endif 4169 4170 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4171 hci_stack->classic_read_local_oob_data = false; 4172 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4173 #endif 4174 4175 // LE 4176 #ifdef ENABLE_BLE 4177 memset(hci_stack->le_random_address, 0, 6); 4178 hci_stack->le_random_address_set = 0; 4179 #endif 4180 #ifdef ENABLE_LE_CENTRAL 4181 hci_stack->le_scanning_active = false; 4182 hci_stack->le_scanning_param_update = true; 4183 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4184 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4185 hci_stack->le_whitelist_capacity = 0; 4186 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4187 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4188 #endif 4189 #endif 4190 #ifdef ENABLE_LE_PERIPHERAL 4191 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4192 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4193 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4194 } 4195 if (hci_stack->le_advertisements_data != NULL){ 4196 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4197 } 4198 #endif 4199 } 4200 4201 #ifdef ENABLE_CLASSIC 4202 /** 4203 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4204 */ 4205 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4206 // store and open remote device db 4207 hci_stack->link_key_db = link_key_db; 4208 if (hci_stack->link_key_db) { 4209 hci_stack->link_key_db->open(); 4210 } 4211 } 4212 #endif 4213 4214 void hci_init(const hci_transport_t *transport, const void *config){ 4215 4216 #ifdef HAVE_MALLOC 4217 if (!hci_stack) { 4218 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4219 } 4220 #else 4221 hci_stack = &hci_stack_static; 4222 #endif 4223 memset(hci_stack, 0, sizeof(hci_stack_t)); 4224 4225 // reference to use transport layer implementation 4226 hci_stack->hci_transport = transport; 4227 4228 // reference to used config 4229 hci_stack->config = config; 4230 4231 // setup pointer for outgoing packet buffer 4232 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4233 4234 // max acl payload size defined in config.h 4235 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4236 4237 // register packet handlers with transport 4238 transport->register_packet_handler(&packet_handler); 4239 4240 hci_stack->state = HCI_STATE_OFF; 4241 4242 // class of device 4243 hci_stack->class_of_device = 0x007a020c; // Smartphone 4244 4245 // bondable by default 4246 hci_stack->bondable = 1; 4247 4248 #ifdef ENABLE_CLASSIC 4249 // classic name 4250 hci_stack->local_name = default_classic_name; 4251 4252 // Master slave policy 4253 hci_stack->master_slave_policy = 1; 4254 4255 // Allow Role Switch 4256 hci_stack->allow_role_switch = 1; 4257 4258 // Default / minimum security level = 2 4259 hci_stack->gap_security_level = LEVEL_2; 4260 4261 // Default Security Mode 4 4262 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4263 4264 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4265 hci_stack->gap_required_encyrption_key_size = 7; 4266 4267 // Link Supervision Timeout 4268 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4269 4270 #endif 4271 4272 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4273 hci_stack->ssp_enable = 1; 4274 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4275 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4276 hci_stack->ssp_auto_accept = 1; 4277 4278 // Secure Connections: enable (requires support from Controller) 4279 hci_stack->secure_connections_enable = true; 4280 4281 // voice setting - signed 16 bit pcm data with CVSD over the air 4282 hci_stack->sco_voice_setting = 0x60; 4283 4284 #ifdef ENABLE_LE_CENTRAL 4285 // connection parameter to use for outgoing connections 4286 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4287 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4288 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4289 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4290 hci_stack->le_connection_latency = 4; // 4 4291 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4292 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4293 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4294 4295 // default LE Scanning 4296 hci_stack->le_scan_type = 0x1; // active 4297 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4298 hci_stack->le_scan_window = 0x30; // 30 ms 4299 #endif 4300 4301 #ifdef ENABLE_LE_PERIPHERAL 4302 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4303 #endif 4304 4305 // connection parameter range used to answer connection parameter update requests in l2cap 4306 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4307 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4308 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4309 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4310 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4311 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4312 4313 hci_state_reset(); 4314 } 4315 4316 void hci_deinit(void){ 4317 btstack_run_loop_remove_timer(&hci_stack->timeout); 4318 #ifdef HAVE_MALLOC 4319 if (hci_stack) { 4320 free(hci_stack); 4321 } 4322 #endif 4323 hci_stack = NULL; 4324 4325 #ifdef ENABLE_CLASSIC 4326 disable_l2cap_timeouts = 0; 4327 #endif 4328 } 4329 4330 /** 4331 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4332 */ 4333 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4334 hci_stack->chipset = chipset_driver; 4335 4336 // reset chipset driver - init is also called on power_up 4337 if (hci_stack->chipset && hci_stack->chipset->init){ 4338 hci_stack->chipset->init(hci_stack->config); 4339 } 4340 } 4341 4342 /** 4343 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4344 */ 4345 void hci_set_control(const btstack_control_t *hardware_control){ 4346 // references to used control implementation 4347 hci_stack->control = hardware_control; 4348 // init with transport config 4349 hardware_control->init(hci_stack->config); 4350 } 4351 4352 static void hci_discard_connections(void){ 4353 btstack_linked_list_iterator_t it; 4354 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4355 while (btstack_linked_list_iterator_has_next(&it)){ 4356 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4357 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4358 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4359 hci_shutdown_connection(connection); 4360 } 4361 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4362 while (hci_stack->iso_streams != NULL){ 4363 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4364 } 4365 #endif 4366 } 4367 4368 void hci_close(void){ 4369 4370 #ifdef ENABLE_CLASSIC 4371 // close remote device db 4372 if (hci_stack->link_key_db) { 4373 hci_stack->link_key_db->close(); 4374 } 4375 #endif 4376 4377 hci_discard_connections(); 4378 4379 hci_power_control(HCI_POWER_OFF); 4380 4381 #ifdef HAVE_MALLOC 4382 free(hci_stack); 4383 #endif 4384 hci_stack = NULL; 4385 } 4386 4387 #ifdef HAVE_SCO_TRANSPORT 4388 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4389 hci_stack->sco_transport = sco_transport; 4390 sco_transport->register_packet_handler(&packet_handler); 4391 } 4392 #endif 4393 4394 #ifdef ENABLE_CLASSIC 4395 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4396 // validate ranage and set 4397 if (encryption_key_size < 7) return; 4398 if (encryption_key_size > 16) return; 4399 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4400 } 4401 4402 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4403 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4404 hci_stack->gap_security_mode = security_mode; 4405 return ERROR_CODE_SUCCESS; 4406 } else { 4407 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4408 } 4409 } 4410 4411 gap_security_mode_t gap_get_security_mode(void){ 4412 return hci_stack->gap_security_mode; 4413 } 4414 4415 void gap_set_security_level(gap_security_level_t security_level){ 4416 hci_stack->gap_security_level = security_level; 4417 } 4418 4419 gap_security_level_t gap_get_security_level(void){ 4420 if (hci_stack->gap_secure_connections_only_mode){ 4421 return LEVEL_4; 4422 } 4423 return hci_stack->gap_security_level; 4424 } 4425 4426 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4427 hci_stack->gap_minimal_service_security_level = security_level; 4428 } 4429 4430 void gap_set_secure_connections_only_mode(bool enable){ 4431 hci_stack->gap_secure_connections_only_mode = enable; 4432 } 4433 4434 bool gap_get_secure_connections_only_mode(void){ 4435 return hci_stack->gap_secure_connections_only_mode; 4436 } 4437 #endif 4438 4439 #ifdef ENABLE_CLASSIC 4440 void gap_set_class_of_device(uint32_t class_of_device){ 4441 hci_stack->class_of_device = class_of_device; 4442 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4443 hci_run(); 4444 } 4445 4446 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4447 hci_stack->default_link_policy_settings = default_link_policy_settings; 4448 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4449 hci_run(); 4450 } 4451 4452 void gap_set_allow_role_switch(bool allow_role_switch){ 4453 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4454 } 4455 4456 uint8_t hci_get_allow_role_switch(void){ 4457 return hci_stack->allow_role_switch; 4458 } 4459 4460 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4461 hci_stack->link_supervision_timeout = link_supervision_timeout; 4462 } 4463 4464 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4465 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4466 } 4467 4468 uint16_t hci_automatic_flush_timeout(void){ 4469 return hci_stack->automatic_flush_timeout; 4470 } 4471 4472 void hci_disable_l2cap_timeout_check(void){ 4473 disable_l2cap_timeouts = 1; 4474 } 4475 #endif 4476 4477 #ifndef HAVE_HOST_CONTROLLER_API 4478 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4479 void hci_set_bd_addr(bd_addr_t addr){ 4480 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4481 hci_stack->custom_bd_addr_set = 1; 4482 } 4483 #endif 4484 4485 // State-Module-Driver overview 4486 // state module low-level 4487 // HCI_STATE_OFF off close 4488 // HCI_STATE_INITIALIZING, on open 4489 // HCI_STATE_WORKING, on open 4490 // HCI_STATE_HALTING, on open 4491 // HCI_STATE_SLEEPING, off/sleep close 4492 // HCI_STATE_FALLING_ASLEEP on open 4493 4494 static int hci_power_control_on(void){ 4495 4496 // power on 4497 int err = 0; 4498 if (hci_stack->control && hci_stack->control->on){ 4499 err = (*hci_stack->control->on)(); 4500 } 4501 if (err){ 4502 log_error( "POWER_ON failed"); 4503 hci_emit_hci_open_failed(); 4504 return err; 4505 } 4506 4507 // int chipset driver 4508 if (hci_stack->chipset && hci_stack->chipset->init){ 4509 hci_stack->chipset->init(hci_stack->config); 4510 } 4511 4512 // init transport 4513 if (hci_stack->hci_transport->init){ 4514 hci_stack->hci_transport->init(hci_stack->config); 4515 } 4516 4517 // open transport 4518 err = hci_stack->hci_transport->open(); 4519 if (err){ 4520 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4521 if (hci_stack->control && hci_stack->control->off){ 4522 (*hci_stack->control->off)(); 4523 } 4524 hci_emit_hci_open_failed(); 4525 return err; 4526 } 4527 return 0; 4528 } 4529 4530 static void hci_power_control_off(void){ 4531 4532 log_info("hci_power_control_off"); 4533 4534 // close low-level device 4535 hci_stack->hci_transport->close(); 4536 4537 log_info("hci_power_control_off - hci_transport closed"); 4538 4539 // power off 4540 if (hci_stack->control && hci_stack->control->off){ 4541 (*hci_stack->control->off)(); 4542 } 4543 4544 log_info("hci_power_control_off - control closed"); 4545 4546 hci_stack->state = HCI_STATE_OFF; 4547 } 4548 4549 static void hci_power_control_sleep(void){ 4550 4551 log_info("hci_power_control_sleep"); 4552 4553 #if 0 4554 // don't close serial port during sleep 4555 4556 // close low-level device 4557 hci_stack->hci_transport->close(hci_stack->config); 4558 #endif 4559 4560 // sleep mode 4561 if (hci_stack->control && hci_stack->control->sleep){ 4562 (*hci_stack->control->sleep)(); 4563 } 4564 4565 hci_stack->state = HCI_STATE_SLEEPING; 4566 } 4567 4568 static int hci_power_control_wake(void){ 4569 4570 log_info("hci_power_control_wake"); 4571 4572 // wake on 4573 if (hci_stack->control && hci_stack->control->wake){ 4574 (*hci_stack->control->wake)(); 4575 } 4576 4577 #if 0 4578 // open low-level device 4579 int err = hci_stack->hci_transport->open(hci_stack->config); 4580 if (err){ 4581 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4582 if (hci_stack->control && hci_stack->control->off){ 4583 (*hci_stack->control->off)(); 4584 } 4585 hci_emit_hci_open_failed(); 4586 return err; 4587 } 4588 #endif 4589 4590 return 0; 4591 } 4592 4593 static void hci_power_enter_initializing_state(void){ 4594 // set up state machine 4595 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4596 hci_stack->hci_packet_buffer_reserved = false; 4597 hci_stack->state = HCI_STATE_INITIALIZING; 4598 hci_stack->substate = HCI_INIT_SEND_RESET; 4599 } 4600 4601 static void hci_power_enter_halting_state(void){ 4602 #ifdef ENABLE_BLE 4603 hci_whitelist_free(); 4604 #endif 4605 // see hci_run 4606 hci_stack->state = HCI_STATE_HALTING; 4607 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4608 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4609 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4610 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4611 btstack_run_loop_add_timer(&hci_stack->timeout); 4612 } 4613 4614 // returns error 4615 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4616 int err; 4617 switch (power_mode){ 4618 case HCI_POWER_ON: 4619 err = hci_power_control_on(); 4620 if (err != 0) { 4621 log_error("hci_power_control_on() error %d", err); 4622 return err; 4623 } 4624 hci_power_enter_initializing_state(); 4625 break; 4626 case HCI_POWER_OFF: 4627 // do nothing 4628 break; 4629 case HCI_POWER_SLEEP: 4630 // do nothing (with SLEEP == OFF) 4631 break; 4632 default: 4633 btstack_assert(false); 4634 break; 4635 } 4636 return ERROR_CODE_SUCCESS; 4637 } 4638 4639 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4640 switch (power_mode){ 4641 case HCI_POWER_ON: 4642 // do nothing 4643 break; 4644 case HCI_POWER_OFF: 4645 // no connections yet, just turn it off 4646 hci_power_control_off(); 4647 break; 4648 case HCI_POWER_SLEEP: 4649 // no connections yet, just turn it off 4650 hci_power_control_sleep(); 4651 break; 4652 default: 4653 btstack_assert(false); 4654 break; 4655 } 4656 return ERROR_CODE_SUCCESS; 4657 } 4658 4659 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4660 switch (power_mode){ 4661 case HCI_POWER_ON: 4662 // do nothing 4663 break; 4664 case HCI_POWER_OFF: 4665 hci_power_enter_halting_state(); 4666 break; 4667 case HCI_POWER_SLEEP: 4668 // see hci_run 4669 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4670 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4671 break; 4672 default: 4673 btstack_assert(false); 4674 break; 4675 } 4676 return ERROR_CODE_SUCCESS; 4677 } 4678 4679 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4680 switch (power_mode){ 4681 case HCI_POWER_ON: 4682 hci_power_enter_initializing_state(); 4683 break; 4684 case HCI_POWER_OFF: 4685 // do nothing 4686 break; 4687 case HCI_POWER_SLEEP: 4688 // see hci_run 4689 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4690 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4691 break; 4692 default: 4693 btstack_assert(false); 4694 break; 4695 } 4696 return ERROR_CODE_SUCCESS; 4697 } 4698 4699 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4700 switch (power_mode){ 4701 case HCI_POWER_ON: 4702 hci_power_enter_initializing_state(); 4703 break; 4704 case HCI_POWER_OFF: 4705 hci_power_enter_halting_state(); 4706 break; 4707 case HCI_POWER_SLEEP: 4708 // do nothing 4709 break; 4710 default: 4711 btstack_assert(false); 4712 break; 4713 } 4714 return ERROR_CODE_SUCCESS; 4715 } 4716 4717 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4718 int err; 4719 switch (power_mode){ 4720 case HCI_POWER_ON: 4721 err = hci_power_control_wake(); 4722 if (err) return err; 4723 hci_power_enter_initializing_state(); 4724 break; 4725 case HCI_POWER_OFF: 4726 hci_power_enter_halting_state(); 4727 break; 4728 case HCI_POWER_SLEEP: 4729 // do nothing 4730 break; 4731 default: 4732 btstack_assert(false); 4733 break; 4734 } 4735 return ERROR_CODE_SUCCESS; 4736 } 4737 4738 int hci_power_control(HCI_POWER_MODE power_mode){ 4739 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4740 int err = 0; 4741 switch (hci_stack->state){ 4742 case HCI_STATE_OFF: 4743 err = hci_power_control_state_off(power_mode); 4744 break; 4745 case HCI_STATE_INITIALIZING: 4746 err = hci_power_control_state_initializing(power_mode); 4747 break; 4748 case HCI_STATE_WORKING: 4749 err = hci_power_control_state_working(power_mode); 4750 break; 4751 case HCI_STATE_HALTING: 4752 err = hci_power_control_state_halting(power_mode); 4753 break; 4754 case HCI_STATE_FALLING_ASLEEP: 4755 err = hci_power_control_state_falling_asleep(power_mode); 4756 break; 4757 case HCI_STATE_SLEEPING: 4758 err = hci_power_control_state_sleeping(power_mode); 4759 break; 4760 default: 4761 btstack_assert(false); 4762 break; 4763 } 4764 if (err != 0){ 4765 return err; 4766 } 4767 4768 // create internal event 4769 hci_emit_state(); 4770 4771 // trigger next/first action 4772 hci_run(); 4773 4774 return 0; 4775 } 4776 4777 4778 static void hci_halting_run(void) { 4779 4780 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4781 4782 hci_connection_t *connection; 4783 #ifdef ENABLE_BLE 4784 #ifdef ENABLE_LE_PERIPHERAL 4785 bool stop_advertismenets; 4786 #endif 4787 #endif 4788 4789 switch (hci_stack->substate) { 4790 case HCI_HALTING_CLASSIC_STOP: 4791 #ifdef ENABLE_CLASSIC 4792 if (!hci_can_send_command_packet_now()) return; 4793 4794 if (hci_stack->connectable || hci_stack->discoverable){ 4795 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4796 hci_send_cmd(&hci_write_scan_enable, 0); 4797 return; 4798 } 4799 #endif 4800 /* fall through */ 4801 4802 case HCI_HALTING_LE_ADV_STOP: 4803 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4804 4805 #ifdef ENABLE_BLE 4806 #ifdef ENABLE_LE_PERIPHERAL 4807 if (!hci_can_send_command_packet_now()) return; 4808 4809 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4810 4811 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4812 if (hci_extended_advertising_supported()){ 4813 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4814 btstack_linked_list_iterator_t it; 4815 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4816 // stop all periodic advertisements and check if an extended set is active 4817 while (btstack_linked_list_iterator_has_next(&it)){ 4818 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4819 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4820 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4821 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4822 return; 4823 } 4824 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4825 stop_advertismenets = true; 4826 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4827 } 4828 } 4829 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4830 if (stop_advertismenets){ 4831 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4832 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4833 return; 4834 } 4835 } 4836 else 4837 #else 4838 { 4839 if (stop_advertismenets) { 4840 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4841 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4842 return; 4843 } 4844 } 4845 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4846 #endif /* ENABLE_LE_PERIPHERAL */ 4847 #endif /* ENABLE_BLE */ 4848 4849 /* fall through */ 4850 4851 case HCI_HALTING_LE_SCAN_STOP: 4852 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4853 if (!hci_can_send_command_packet_now()) return; 4854 4855 #ifdef ENABLE_BLE 4856 #ifdef ENABLE_LE_CENTRAL 4857 if (hci_stack->le_scanning_active){ 4858 hci_le_scan_stop(); 4859 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4860 return; 4861 } 4862 #endif 4863 #endif 4864 4865 /* fall through */ 4866 4867 case HCI_HALTING_DISCONNECT_ALL: 4868 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4869 if (!hci_can_send_command_packet_now()) return; 4870 4871 // close all open connections 4872 connection = (hci_connection_t *) hci_stack->connections; 4873 if (connection) { 4874 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4875 4876 // check state 4877 if (connection->state == SENT_DISCONNECT) return; 4878 connection->state = SENT_DISCONNECT; 4879 4880 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4881 4882 // finally, send the disconnect command 4883 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4884 return; 4885 } 4886 4887 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4888 // stop BIGs and BIG Syncs 4889 if (hci_stack->le_audio_bigs != NULL){ 4890 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 4891 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4892 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4893 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 4894 return; 4895 } 4896 if (hci_stack->le_audio_big_syncs != NULL){ 4897 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 4898 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4899 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4900 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 4901 return; 4902 } 4903 #endif 4904 4905 btstack_run_loop_remove_timer(&hci_stack->timeout); 4906 4907 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4908 log_info("HCI_STATE_HALTING: wait 50 ms"); 4909 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 4910 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4911 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4912 btstack_run_loop_add_timer(&hci_stack->timeout); 4913 break; 4914 4915 case HCI_HALTING_CLOSE: 4916 // close left over connections (that had not been properly closed before) 4917 hci_discard_connections(); 4918 4919 log_info("HCI_STATE_HALTING, calling off"); 4920 4921 // switch mode 4922 hci_power_control_off(); 4923 4924 log_info("HCI_STATE_HALTING, emitting state"); 4925 hci_emit_state(); 4926 log_info("HCI_STATE_HALTING, done"); 4927 break; 4928 4929 case HCI_HALTING_W4_CLOSE_TIMER: 4930 // keep waiting 4931 4932 break; 4933 default: 4934 break; 4935 } 4936 }; 4937 4938 static void hci_falling_asleep_run(void){ 4939 hci_connection_t * connection; 4940 switch(hci_stack->substate) { 4941 case HCI_FALLING_ASLEEP_DISCONNECT: 4942 log_info("HCI_STATE_FALLING_ASLEEP"); 4943 // close all open connections 4944 connection = (hci_connection_t *) hci_stack->connections; 4945 if (connection){ 4946 4947 // send disconnect 4948 if (!hci_can_send_command_packet_now()) return; 4949 4950 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4951 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4952 4953 // send disconnected event right away - causes higher layer connections to get closed, too. 4954 hci_shutdown_connection(connection); 4955 return; 4956 } 4957 4958 if (hci_classic_supported()){ 4959 // disable page and inquiry scan 4960 if (!hci_can_send_command_packet_now()) return; 4961 4962 log_info("HCI_STATE_HALTING, disabling inq scans"); 4963 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4964 4965 // continue in next sub state 4966 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4967 break; 4968 } 4969 4970 /* fall through */ 4971 4972 case HCI_FALLING_ASLEEP_COMPLETE: 4973 log_info("HCI_STATE_HALTING, calling sleep"); 4974 // switch mode 4975 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4976 hci_emit_state(); 4977 break; 4978 4979 default: 4980 break; 4981 } 4982 } 4983 4984 #ifdef ENABLE_CLASSIC 4985 4986 static void hci_update_scan_enable(void){ 4987 // 2 = page scan, 1 = inq scan 4988 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 4989 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 4990 hci_run(); 4991 } 4992 4993 void gap_discoverable_control(uint8_t enable){ 4994 if (enable) enable = 1; // normalize argument 4995 4996 if (hci_stack->discoverable == enable){ 4997 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 4998 return; 4999 } 5000 5001 hci_stack->discoverable = enable; 5002 hci_update_scan_enable(); 5003 } 5004 5005 void gap_connectable_control(uint8_t enable){ 5006 if (enable) enable = 1; // normalize argument 5007 5008 // don't emit event 5009 if (hci_stack->connectable == enable) return; 5010 5011 hci_stack->connectable = enable; 5012 hci_update_scan_enable(); 5013 } 5014 #endif 5015 5016 void gap_local_bd_addr(bd_addr_t address_buffer){ 5017 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5018 } 5019 5020 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5021 static void hci_host_num_completed_packets(void){ 5022 5023 // create packet manually as arrays are not supported and num_commands should not get reduced 5024 hci_reserve_packet_buffer(); 5025 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5026 5027 uint16_t size = 0; 5028 uint16_t num_handles = 0; 5029 packet[size++] = 0x35; 5030 packet[size++] = 0x0c; 5031 size++; // skip param len 5032 size++; // skip num handles 5033 5034 // add { handle, packets } entries 5035 btstack_linked_item_t * it; 5036 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5037 hci_connection_t * connection = (hci_connection_t *) it; 5038 if (connection->num_packets_completed){ 5039 little_endian_store_16(packet, size, connection->con_handle); 5040 size += 2; 5041 little_endian_store_16(packet, size, connection->num_packets_completed); 5042 size += 2; 5043 // 5044 num_handles++; 5045 connection->num_packets_completed = 0; 5046 } 5047 } 5048 5049 packet[2] = size - 3; 5050 packet[3] = num_handles; 5051 5052 hci_stack->host_completed_packets = 0; 5053 5054 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5055 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5056 5057 // release packet buffer for synchronous transport implementations 5058 if (hci_transport_synchronous()){ 5059 hci_release_packet_buffer(); 5060 hci_emit_transport_packet_sent(); 5061 } 5062 } 5063 #endif 5064 5065 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5066 UNUSED(ds); 5067 hci_stack->substate = HCI_HALTING_CLOSE; 5068 // allow packet handlers to defer final shutdown 5069 hci_emit_state(); 5070 hci_run(); 5071 } 5072 5073 static bool hci_run_acl_fragments(void){ 5074 if (hci_stack->acl_fragmentation_total_size > 0u) { 5075 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5076 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5077 if (connection) { 5078 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5079 hci_send_acl_packet_fragments(connection); 5080 return true; 5081 } 5082 } else { 5083 // connection gone -> discard further fragments 5084 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5085 hci_stack->acl_fragmentation_total_size = 0; 5086 hci_stack->acl_fragmentation_pos = 0; 5087 } 5088 } 5089 return false; 5090 } 5091 5092 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5093 static bool hci_run_iso_fragments(void){ 5094 if (hci_stack->iso_fragmentation_total_size > 0u) { 5095 // TODO: flow control 5096 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5097 hci_send_iso_packet_fragments(); 5098 return true; 5099 } 5100 } 5101 return false; 5102 } 5103 #endif 5104 5105 #ifdef ENABLE_CLASSIC 5106 5107 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5108 static bool hci_classic_operation_active(void) { 5109 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5110 return true; 5111 } 5112 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5113 return true; 5114 } 5115 btstack_linked_item_t * it; 5116 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5117 hci_connection_t *connection = (hci_connection_t *) it; 5118 switch (connection->state) { 5119 case SENT_CREATE_CONNECTION: 5120 case SENT_CANCEL_CONNECTION: 5121 case SENT_DISCONNECT: 5122 return true; 5123 default: 5124 break; 5125 } 5126 } 5127 return false; 5128 } 5129 #endif 5130 5131 static bool hci_run_general_gap_classic(void){ 5132 5133 // assert stack is working and classic is active 5134 if (hci_classic_supported() == false) return false; 5135 if (hci_stack->state != HCI_STATE_WORKING) return false; 5136 5137 // decline incoming connections 5138 if (hci_stack->decline_reason){ 5139 uint8_t reason = hci_stack->decline_reason; 5140 hci_stack->decline_reason = 0; 5141 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5142 return true; 5143 } 5144 5145 if (hci_stack->gap_tasks_classic != 0){ 5146 hci_run_gap_tasks_classic(); 5147 return true; 5148 } 5149 5150 // start/stop inquiry 5151 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5152 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5153 if (hci_classic_operation_active() == false) 5154 #endif 5155 { 5156 uint8_t duration = hci_stack->inquiry_state; 5157 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5158 if (hci_stack->inquiry_max_period_length != 0){ 5159 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); 5160 } else { 5161 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5162 } 5163 return true; 5164 } 5165 } 5166 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5167 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5168 hci_send_cmd(&hci_inquiry_cancel); 5169 return true; 5170 } 5171 5172 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5173 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5174 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5175 return true; 5176 } 5177 5178 // remote name request 5179 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5180 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5181 if (hci_classic_operation_active() == false) 5182 #endif 5183 { 5184 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5185 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5186 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5187 return true; 5188 } 5189 } 5190 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5191 // Local OOB data 5192 if (hci_stack->classic_read_local_oob_data){ 5193 hci_stack->classic_read_local_oob_data = false; 5194 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5195 hci_send_cmd(&hci_read_local_extended_oob_data); 5196 } else { 5197 hci_send_cmd(&hci_read_local_oob_data); 5198 } 5199 } 5200 #endif 5201 // pairing 5202 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5203 uint8_t state = hci_stack->gap_pairing_state; 5204 uint8_t pin_code[16]; 5205 switch (state){ 5206 case GAP_PAIRING_STATE_SEND_PIN: 5207 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5208 memset(pin_code, 0, 16); 5209 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5210 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5211 break; 5212 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5213 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5214 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5215 break; 5216 case GAP_PAIRING_STATE_SEND_PASSKEY: 5217 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5218 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5219 break; 5220 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5221 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5222 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5223 break; 5224 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5225 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5226 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5227 break; 5228 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5229 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5230 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5231 break; 5232 default: 5233 break; 5234 } 5235 return true; 5236 } 5237 return false; 5238 } 5239 #endif 5240 5241 #ifdef ENABLE_BLE 5242 5243 #ifdef ENABLE_LE_CENTRAL 5244 static void hci_le_scan_stop(void){ 5245 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5246 if (hci_extended_advertising_supported()) { 5247 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5248 } else 5249 #endif 5250 { 5251 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5252 } 5253 } 5254 #endif 5255 5256 #ifdef ENABLE_LE_PERIPHERAL 5257 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5258 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5259 uint8_t operation = 0; 5260 if (pos == 0){ 5261 // first fragment or complete data 5262 operation |= 1; 5263 } 5264 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5265 // last fragment or complete data 5266 operation |= 2; 5267 } 5268 return operation; 5269 } 5270 #endif 5271 #endif 5272 5273 static bool hci_run_general_gap_le(void){ 5274 5275 btstack_linked_list_iterator_t lit; 5276 5277 // Phase 1: collect what to stop 5278 5279 #ifdef ENABLE_LE_CENTRAL 5280 bool scanning_stop = false; 5281 bool connecting_stop = false; 5282 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5283 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5284 bool periodic_sync_stop = false; 5285 #endif 5286 #endif 5287 #endif 5288 5289 #ifdef ENABLE_LE_PERIPHERAL 5290 bool advertising_stop = false; 5291 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5292 le_advertising_set_t * advertising_stop_set = NULL; 5293 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5294 bool periodic_advertising_stop = false; 5295 #endif 5296 #endif 5297 #endif 5298 5299 // check if own address changes 5300 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5301 5302 // check if whitelist needs modification 5303 bool whitelist_modification_pending = false; 5304 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5305 while (btstack_linked_list_iterator_has_next(&lit)){ 5306 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5307 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5308 whitelist_modification_pending = true; 5309 break; 5310 } 5311 } 5312 5313 // check if resolving list needs modification 5314 bool resolving_list_modification_pending = false; 5315 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5316 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5317 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5318 resolving_list_modification_pending = true; 5319 } 5320 #endif 5321 5322 #ifdef ENABLE_LE_CENTRAL 5323 5324 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5325 // check if periodic advertiser list needs modification 5326 bool periodic_list_modification_pending = false; 5327 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5328 while (btstack_linked_list_iterator_has_next(&lit)){ 5329 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5330 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5331 periodic_list_modification_pending = true; 5332 break; 5333 } 5334 } 5335 #endif 5336 5337 // scanning control 5338 if (hci_stack->le_scanning_active) { 5339 // stop if: 5340 // - parameter change required 5341 // - it's disabled 5342 // - whitelist change required but used for scanning 5343 // - resolving list modified 5344 // - own address changes 5345 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5346 if ((hci_stack->le_scanning_param_update) || 5347 !hci_stack->le_scanning_enabled || 5348 (scanning_uses_whitelist && whitelist_modification_pending) || 5349 resolving_list_modification_pending || 5350 random_address_change){ 5351 5352 scanning_stop = true; 5353 } 5354 } 5355 5356 // connecting control 5357 bool connecting_with_whitelist; 5358 switch (hci_stack->le_connecting_state){ 5359 case LE_CONNECTING_DIRECT: 5360 case LE_CONNECTING_WHITELIST: 5361 // stop connecting if: 5362 // - connecting uses white and whitelist modification pending 5363 // - if it got disabled 5364 // - resolving list modified 5365 // - own address changes 5366 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5367 if ((connecting_with_whitelist && whitelist_modification_pending) || 5368 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5369 resolving_list_modification_pending || 5370 random_address_change) { 5371 5372 connecting_stop = true; 5373 } 5374 break; 5375 default: 5376 break; 5377 } 5378 5379 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5380 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5381 // periodic sync control 5382 bool sync_with_advertiser_list; 5383 switch(hci_stack->le_periodic_sync_state){ 5384 case LE_CONNECTING_DIRECT: 5385 case LE_CONNECTING_WHITELIST: 5386 // stop sync if: 5387 // - sync with advertiser list and advertiser list modification pending 5388 // - if it got disabled 5389 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5390 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5391 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5392 periodic_sync_stop = true; 5393 } 5394 break; 5395 default: 5396 break; 5397 } 5398 #endif 5399 #endif 5400 5401 #endif /* ENABLE_LE_CENTRAL */ 5402 5403 #ifdef ENABLE_LE_PERIPHERAL 5404 // le advertisement control 5405 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5406 // stop if: 5407 // - parameter change required 5408 // - random address used in advertising and changes 5409 // - it's disabled 5410 // - whitelist change required but used for advertisement filter policy 5411 // - resolving list modified 5412 // - own address changes 5413 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5414 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5415 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5416 if (advertising_change || 5417 (advertising_uses_random_address && random_address_change) || 5418 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5419 (advertising_uses_whitelist && whitelist_modification_pending) || 5420 resolving_list_modification_pending || 5421 random_address_change) { 5422 5423 advertising_stop = true; 5424 } 5425 } 5426 5427 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5428 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5429 btstack_linked_list_iterator_t it; 5430 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5431 while (btstack_linked_list_iterator_has_next(&it)){ 5432 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5433 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5434 // stop if: 5435 // - parameter change required 5436 // - random address used in connectable advertising and changes 5437 // - it's disabled 5438 // - whitelist change required but used for advertisement filter policy 5439 // - resolving list modified 5440 // - own address changes 5441 // - advertisement set will be removed 5442 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5443 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5444 bool advertising_uses_random_address = 5445 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5446 advertising_connectable; 5447 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5448 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5449 bool advertising_set_random_address_change = 5450 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5451 bool advertising_set_will_be_removed = 5452 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5453 if (advertising_parameter_change || 5454 (advertising_uses_random_address && advertising_set_random_address_change) || 5455 (advertising_enabled == false) || 5456 (advertising_uses_whitelist && whitelist_modification_pending) || 5457 resolving_list_modification_pending || 5458 advertising_set_will_be_removed) { 5459 5460 advertising_stop = true; 5461 advertising_stop_set = advertising_set; 5462 break; 5463 } 5464 } 5465 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5466 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5467 // stop if: 5468 // - it's disabled 5469 // - parameter change required 5470 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5471 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5472 if ((periodic_enabled == false) || periodic_parameter_change){ 5473 periodic_advertising_stop = true; 5474 advertising_stop_set = advertising_set; 5475 } 5476 } 5477 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5478 } 5479 } 5480 #endif 5481 5482 #endif 5483 5484 5485 // Phase 2: stop everything that should be off during modifications 5486 5487 5488 // 2.1 Outgoing connection 5489 #ifdef ENABLE_LE_CENTRAL 5490 if (connecting_stop){ 5491 hci_send_cmd(&hci_le_create_connection_cancel); 5492 return true; 5493 } 5494 #endif 5495 5496 // 2.2 Scanning 5497 #ifdef ENABLE_LE_CENTRAL 5498 if (scanning_stop){ 5499 hci_stack->le_scanning_active = false; 5500 hci_le_scan_stop(); 5501 return true; 5502 } 5503 5504 // 2.3 Periodic Sync 5505 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5506 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5507 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5508 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5509 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5510 return true; 5511 } 5512 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5513 if (periodic_sync_stop){ 5514 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5515 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5516 return true; 5517 } 5518 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5519 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5520 #endif /* ENABLE_LE_CENTRAL */ 5521 5522 // 2.4 Advertising: legacy, extended, periodic 5523 #ifdef ENABLE_LE_PERIPHERAL 5524 if (advertising_stop){ 5525 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5526 if (hci_extended_advertising_supported()) { 5527 uint8_t advertising_stop_handle; 5528 if (advertising_stop_set != NULL){ 5529 advertising_stop_handle = advertising_stop_set->advertising_handle; 5530 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5531 } else { 5532 advertising_stop_handle = 0; 5533 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5534 } 5535 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5536 const uint16_t durations[] = { 0 }; 5537 const uint16_t max_events[] = { 0 }; 5538 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5539 } else 5540 #endif 5541 { 5542 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5543 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5544 } 5545 return true; 5546 } 5547 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5548 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5549 if (periodic_advertising_stop){ 5550 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5551 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5552 return true; 5553 } 5554 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5555 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5556 #endif /* ENABLE_LE_PERIPHERAL */ 5557 5558 5559 // Phase 3: modify 5560 5561 if (random_address_change){ 5562 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5563 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5564 if (hci_extended_advertising_supported()) { 5565 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5566 } 5567 #endif 5568 { 5569 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5570 } 5571 return true; 5572 } 5573 5574 #ifdef ENABLE_LE_CENTRAL 5575 if (hci_stack->le_scanning_param_update){ 5576 hci_stack->le_scanning_param_update = false; 5577 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5578 if (hci_extended_advertising_supported()){ 5579 // prepare arrays for all PHYs 5580 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5581 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5582 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5583 uint8_t scanning_phys = 1; // LE 1M PHY 5584 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5585 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5586 } else 5587 #endif 5588 { 5589 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5590 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5591 } 5592 return true; 5593 } 5594 #endif 5595 5596 #ifdef ENABLE_LE_PERIPHERAL 5597 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5598 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5599 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5600 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5601 if (hci_extended_advertising_supported()){ 5602 // map advertisment type to advertising event properties 5603 uint16_t adv_event_properties = 0; 5604 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5605 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5606 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5607 } 5608 hci_stack->le_advertising_set_in_current_command = 0; 5609 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5610 0, 5611 adv_event_properties, 5612 hci_stack->le_advertisements_interval_min, 5613 hci_stack->le_advertisements_interval_max, 5614 hci_stack->le_advertisements_channel_map, 5615 hci_stack->le_advertisements_own_addr_type, 5616 hci_stack->le_advertisements_direct_address_type, 5617 hci_stack->le_advertisements_direct_address, 5618 hci_stack->le_advertisements_filter_policy, 5619 0x7f, // tx power: no preference 5620 0x01, // primary adv phy: LE 1M 5621 0, // secondary adv max skip 5622 0, // secondary adv phy 5623 0, // adv sid 5624 0 // scan request notification 5625 ); 5626 } 5627 #endif 5628 { 5629 hci_send_cmd(&hci_le_set_advertising_parameters, 5630 hci_stack->le_advertisements_interval_min, 5631 hci_stack->le_advertisements_interval_max, 5632 hci_stack->le_advertisements_type, 5633 hci_stack->le_advertisements_own_addr_type, 5634 hci_stack->le_advertisements_direct_address_type, 5635 hci_stack->le_advertisements_direct_address, 5636 hci_stack->le_advertisements_channel_map, 5637 hci_stack->le_advertisements_filter_policy); 5638 } 5639 return true; 5640 } 5641 5642 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5643 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5644 uint8_t adv_data_clean[31]; 5645 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5646 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5647 hci_stack->le_advertisements_data_len); 5648 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5649 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5650 if (hci_extended_advertising_supported()){ 5651 hci_stack->le_advertising_set_in_current_command = 0; 5652 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5653 } else 5654 #endif 5655 { 5656 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5657 } 5658 return true; 5659 } 5660 5661 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5662 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5663 uint8_t scan_data_clean[31]; 5664 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5665 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5666 hci_stack->le_scan_response_data_len); 5667 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5668 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5669 if (hci_extended_advertising_supported()){ 5670 hci_stack->le_advertising_set_in_current_command = 0; 5671 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5672 } else 5673 #endif 5674 { 5675 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5676 } 5677 return true; 5678 } 5679 5680 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5681 if (hci_extended_advertising_supported()) { 5682 btstack_linked_list_iterator_t it; 5683 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5684 while (btstack_linked_list_iterator_has_next(&it)){ 5685 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5686 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5687 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5688 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5689 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5690 return true; 5691 } 5692 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5693 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5694 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5695 return true; 5696 } 5697 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5698 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5699 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5700 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5701 advertising_set->advertising_handle, 5702 advertising_set->extended_params.advertising_event_properties, 5703 advertising_set->extended_params.primary_advertising_interval_min, 5704 advertising_set->extended_params.primary_advertising_interval_max, 5705 advertising_set->extended_params.primary_advertising_channel_map, 5706 advertising_set->extended_params.own_address_type, 5707 advertising_set->extended_params.peer_address_type, 5708 advertising_set->extended_params.peer_address, 5709 advertising_set->extended_params.advertising_filter_policy, 5710 advertising_set->extended_params.advertising_tx_power, 5711 advertising_set->extended_params.primary_advertising_phy, 5712 advertising_set->extended_params.secondary_advertising_max_skip, 5713 advertising_set->extended_params.secondary_advertising_phy, 5714 advertising_set->extended_params.advertising_sid, 5715 advertising_set->extended_params.scan_request_notification_enable 5716 ); 5717 return true; 5718 } 5719 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5720 uint16_t pos = advertising_set->adv_data_pos; 5721 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5722 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5723 if ((operation & 0x02) != 0){ 5724 // last fragment or complete data 5725 operation |= 2; 5726 advertising_set->adv_data_pos = 0; 5727 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5728 } else { 5729 advertising_set->adv_data_pos += data_to_upload; 5730 } 5731 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5732 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5733 return true; 5734 } 5735 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5736 uint16_t pos = advertising_set->scan_data_pos; 5737 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5738 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5739 if ((operation & 0x02) != 0){ 5740 advertising_set->scan_data_pos = 0; 5741 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5742 } else { 5743 advertising_set->scan_data_pos += data_to_upload; 5744 } 5745 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5746 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5747 return true; 5748 } 5749 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5750 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5751 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5752 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5753 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5754 advertising_set->advertising_handle, 5755 advertising_set->periodic_params.periodic_advertising_interval_min, 5756 advertising_set->periodic_params.periodic_advertising_interval_max, 5757 advertising_set->periodic_params.periodic_advertising_properties); 5758 return true; 5759 } 5760 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5761 uint16_t pos = advertising_set->periodic_data_pos; 5762 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5763 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5764 if ((operation & 0x02) != 0){ 5765 // last fragment or complete data 5766 operation |= 2; 5767 advertising_set->periodic_data_pos = 0; 5768 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5769 } else { 5770 advertising_set->periodic_data_pos += data_to_upload; 5771 } 5772 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5773 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5774 return true; 5775 } 5776 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5777 } 5778 } 5779 #endif 5780 5781 #endif 5782 5783 #ifdef ENABLE_LE_CENTRAL 5784 // if connect with whitelist was active and is not cancelled yet, wait until next time 5785 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5786 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5787 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5788 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5789 #endif 5790 #endif 5791 5792 // LE Whitelist Management 5793 if (whitelist_modification_pending){ 5794 // add/remove entries 5795 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5796 while (btstack_linked_list_iterator_has_next(&lit)){ 5797 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5798 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5799 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5800 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5801 return true; 5802 } 5803 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5804 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5805 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5806 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5807 return true; 5808 } 5809 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5810 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5811 btstack_memory_whitelist_entry_free(entry); 5812 } 5813 } 5814 } 5815 5816 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5817 // LE Resolving List Management 5818 if (resolving_list_supported) { 5819 uint16_t i; 5820 switch (hci_stack->le_resolving_list_state) { 5821 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5822 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5823 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5824 return true; 5825 case LE_RESOLVING_LIST_READ_SIZE: 5826 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5827 hci_send_cmd(&hci_le_read_resolving_list_size); 5828 return true; 5829 case LE_RESOLVING_LIST_SEND_CLEAR: 5830 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5831 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5832 sizeof(hci_stack->le_resolving_list_add_entries)); 5833 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5834 sizeof(hci_stack->le_resolving_list_remove_entries)); 5835 hci_send_cmd(&hci_le_clear_resolving_list); 5836 return true; 5837 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5838 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5839 uint8_t offset = i >> 3; 5840 uint8_t mask = 1 << (i & 7); 5841 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5842 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5843 bd_addr_t peer_identity_addreses; 5844 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5845 sm_key_t peer_irk; 5846 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5847 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5848 5849 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5850 // trigger whitelist entry 'update' (work around for controller bug) 5851 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5852 while (btstack_linked_list_iterator_has_next(&lit)) { 5853 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5854 if (entry->address_type != peer_identity_addr_type) continue; 5855 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5856 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5857 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5858 } 5859 #endif 5860 5861 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5862 peer_identity_addreses); 5863 return true; 5864 } 5865 5866 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5867 5868 /* fall through */ 5869 5870 case LE_RESOLVING_LIST_ADD_ENTRIES: 5871 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5872 uint8_t offset = i >> 3; 5873 uint8_t mask = 1 << (i & 7); 5874 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5875 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5876 bd_addr_t peer_identity_addreses; 5877 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5878 sm_key_t peer_irk; 5879 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5880 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5881 const uint8_t *local_irk = gap_get_persistent_irk(); 5882 // command uses format specifier 'P' that stores 16-byte value without flip 5883 uint8_t local_irk_flipped[16]; 5884 uint8_t peer_irk_flipped[16]; 5885 reverse_128(local_irk, local_irk_flipped); 5886 reverse_128(peer_irk, peer_irk_flipped); 5887 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5888 peer_irk_flipped, local_irk_flipped); 5889 return true; 5890 } 5891 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5892 break; 5893 5894 default: 5895 break; 5896 } 5897 } 5898 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5899 #endif 5900 5901 #ifdef ENABLE_LE_CENTRAL 5902 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5903 // LE Whitelist Management 5904 if (periodic_list_modification_pending){ 5905 // add/remove entries 5906 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5907 while (btstack_linked_list_iterator_has_next(&lit)){ 5908 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5909 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 5910 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 5911 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 5912 return true; 5913 } 5914 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 5915 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 5916 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 5917 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 5918 return true; 5919 } 5920 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 5921 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 5922 btstack_memory_periodic_advertiser_list_entry_free(entry); 5923 } 5924 } 5925 } 5926 #endif 5927 #endif 5928 5929 // post-pone all actions until stack is fully working 5930 if (hci_stack->state != HCI_STATE_WORKING) return false; 5931 5932 // advertisements, active scanning, and creating connections requires random address to be set if using private address 5933 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 5934 5935 // Phase 4: restore state 5936 5937 #ifdef ENABLE_LE_CENTRAL 5938 // re-start scanning 5939 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 5940 hci_stack->le_scanning_active = true; 5941 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5942 if (hci_extended_advertising_supported()){ 5943 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 5944 } else 5945 #endif 5946 { 5947 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 5948 } 5949 return true; 5950 } 5951 #endif 5952 5953 #ifdef ENABLE_LE_CENTRAL 5954 // re-start connecting 5955 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 5956 bd_addr_t null_addr; 5957 memset(null_addr, 0, 6); 5958 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 5959 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 5960 hci_send_cmd(&hci_le_create_connection, 5961 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 5962 hci_stack->le_connection_scan_window, // scan interval: 30 ms 5963 1, // use whitelist 5964 0, // peer address type 5965 null_addr, // peer bd addr 5966 hci_stack->le_connection_own_addr_type, // our addr type: 5967 hci_stack->le_connection_interval_min, // conn interval min 5968 hci_stack->le_connection_interval_max, // conn interval max 5969 hci_stack->le_connection_latency, // conn latency 5970 hci_stack->le_supervision_timeout, // conn latency 5971 hci_stack->le_minimum_ce_length, // min ce length 5972 hci_stack->le_maximum_ce_length // max ce length 5973 ); 5974 return true; 5975 } 5976 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5977 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 5978 switch(hci_stack->le_periodic_sync_request){ 5979 case LE_CONNECTING_DIRECT: 5980 case LE_CONNECTING_WHITELIST: 5981 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 5982 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 5983 hci_stack->le_periodic_sync_options, 5984 hci_stack->le_periodic_sync_advertising_sid, 5985 hci_stack->le_periodic_sync_advertiser_address_type, 5986 hci_stack->le_periodic_sync_advertiser_address, 5987 hci_stack->le_periodic_sync_skip, 5988 hci_stack->le_periodic_sync_timeout, 5989 hci_stack->le_periodic_sync_cte_type); 5990 return true; 5991 default: 5992 break; 5993 } 5994 } 5995 #endif 5996 #endif 5997 5998 #ifdef ENABLE_LE_PERIPHERAL 5999 // re-start advertising 6000 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6001 // check if advertisements should be enabled given 6002 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6003 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6004 6005 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6006 if (hci_extended_advertising_supported()){ 6007 const uint8_t advertising_handles[] = { 0 }; 6008 const uint16_t durations[] = { 0 }; 6009 const uint16_t max_events[] = { 0 }; 6010 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6011 } else 6012 #endif 6013 { 6014 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6015 } 6016 return true; 6017 } 6018 6019 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6020 if (hci_extended_advertising_supported()) { 6021 btstack_linked_list_iterator_t it; 6022 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6023 while (btstack_linked_list_iterator_has_next(&it)) { 6024 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6025 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6026 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6027 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6028 const uint16_t durations[] = { advertising_set->enable_timeout }; 6029 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6030 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6031 return true; 6032 } 6033 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6034 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6035 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6036 uint8_t enable = 1; 6037 if (advertising_set->periodic_include_adi){ 6038 enable |= 2; 6039 } 6040 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6041 return true; 6042 } 6043 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6044 } 6045 } 6046 #endif 6047 #endif 6048 6049 return false; 6050 } 6051 6052 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6053 static bool hci_run_iso_tasks(void){ 6054 btstack_linked_list_iterator_t it; 6055 6056 // BIG 6057 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6058 while (btstack_linked_list_iterator_has_next(&it)){ 6059 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6060 switch (big->state){ 6061 case LE_AUDIO_BIG_STATE_CREATE: 6062 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6063 hci_send_cmd(&hci_le_create_big, 6064 big->params->big_handle, 6065 big->params->advertising_handle, 6066 big->params->num_bis, 6067 big->params->sdu_interval_us, 6068 big->params->max_sdu, 6069 big->params->max_transport_latency_ms, 6070 big->params->rtn, 6071 big->params->phy, 6072 big->params->packing, 6073 big->params->framing, 6074 big->params->encryption, 6075 big->params->broadcast_code); 6076 return true; 6077 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6078 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6079 hci_send_cmd(&hci_le_setup_iso_data_path, big->bis_con_handles[big->state_vars.next_bis], 0, 0, 0, 0, 0, 0, 0, NULL); 6080 return true; 6081 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6082 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6083 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6084 break; 6085 case LE_AUDIO_BIG_STATE_TERMINATE: 6086 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6087 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6088 return true; 6089 default: 6090 break; 6091 } 6092 } 6093 6094 // BIG Sync 6095 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6096 while (btstack_linked_list_iterator_has_next(&it)){ 6097 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6098 switch (big_sync->state){ 6099 case LE_AUDIO_BIG_STATE_CREATE: 6100 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6101 hci_send_cmd(&hci_le_big_create_sync, 6102 big_sync->params->big_handle, 6103 big_sync->params->sync_handle, 6104 big_sync->params->encryption, 6105 big_sync->params->broadcast_code, 6106 big_sync->params->mse, 6107 big_sync->params->big_sync_timeout_10ms, 6108 big_sync->params->num_bis, 6109 big_sync->params->bis_indices); 6110 return true; 6111 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6112 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6113 hci_send_cmd(&hci_le_setup_iso_data_path, big_sync->bis_con_handles[big_sync->state_vars.next_bis], 1, 0, 0, 0, 0, 0, 0, NULL); 6114 return true; 6115 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6116 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6117 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6118 break; 6119 case LE_AUDIO_BIG_STATE_TERMINATE: 6120 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6121 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6122 return true; 6123 default: 6124 break; 6125 } 6126 } 6127 6128 return false; 6129 } 6130 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6131 #endif 6132 6133 static bool hci_run_general_pending_commands(void){ 6134 btstack_linked_item_t * it; 6135 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6136 hci_connection_t * connection = (hci_connection_t *) it; 6137 6138 switch(connection->state){ 6139 case SEND_CREATE_CONNECTION: 6140 switch(connection->address_type){ 6141 #ifdef ENABLE_CLASSIC 6142 case BD_ADDR_TYPE_ACL: 6143 log_info("sending hci_create_connection"); 6144 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6145 break; 6146 #endif 6147 default: 6148 #ifdef ENABLE_BLE 6149 #ifdef ENABLE_LE_CENTRAL 6150 log_info("sending hci_le_create_connection"); 6151 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6152 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6153 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6154 if (hci_extended_advertising_supported()) { 6155 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6156 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6157 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6158 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6159 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6160 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6161 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6162 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6163 hci_send_cmd(&hci_le_extended_create_connection, 6164 0, // don't use whitelist 6165 hci_stack->le_connection_own_addr_type, // our addr type: 6166 connection->address_type, // peer address type 6167 connection->address, // peer bd addr 6168 1, // initiating PHY - 1M 6169 le_connection_scan_interval, // conn scan interval 6170 le_connection_scan_window, // conn scan windows 6171 le_connection_interval_min, // conn interval min 6172 le_connection_interval_max, // conn interval max 6173 le_connection_latency, // conn latency 6174 le_supervision_timeout, // conn latency 6175 le_minimum_ce_length, // min ce length 6176 le_maximum_ce_length // max ce length 6177 ); } 6178 else 6179 #endif 6180 { 6181 hci_send_cmd(&hci_le_create_connection, 6182 hci_stack->le_connection_scan_interval, // conn scan interval 6183 hci_stack->le_connection_scan_window, // conn scan windows 6184 0, // don't use whitelist 6185 connection->address_type, // peer address type 6186 connection->address, // peer bd addr 6187 hci_stack->le_connection_own_addr_type, // our addr type: 6188 hci_stack->le_connection_interval_min, // conn interval min 6189 hci_stack->le_connection_interval_max, // conn interval max 6190 hci_stack->le_connection_latency, // conn latency 6191 hci_stack->le_supervision_timeout, // conn latency 6192 hci_stack->le_minimum_ce_length, // min ce length 6193 hci_stack->le_maximum_ce_length // max ce length 6194 ); 6195 } 6196 connection->state = SENT_CREATE_CONNECTION; 6197 #endif 6198 #endif 6199 break; 6200 } 6201 return true; 6202 6203 #ifdef ENABLE_CLASSIC 6204 case RECEIVED_CONNECTION_REQUEST: 6205 connection->role = HCI_ROLE_SLAVE; 6206 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6207 log_info("sending hci_accept_connection_request"); 6208 connection->state = ACCEPTED_CONNECTION_REQUEST; 6209 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6210 return true; 6211 } 6212 break; 6213 #endif 6214 6215 #ifdef ENABLE_BLE 6216 #ifdef ENABLE_LE_CENTRAL 6217 case SEND_CANCEL_CONNECTION: 6218 connection->state = SENT_CANCEL_CONNECTION; 6219 hci_send_cmd(&hci_le_create_connection_cancel); 6220 return true; 6221 #endif 6222 #endif 6223 case SEND_DISCONNECT: 6224 connection->state = SENT_DISCONNECT; 6225 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6226 return true; 6227 6228 default: 6229 break; 6230 } 6231 6232 // no further commands if connection is about to get shut down 6233 if (connection->state == SENT_DISCONNECT) continue; 6234 6235 #ifdef ENABLE_CLASSIC 6236 6237 // Handling link key request requires remote supported features 6238 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6239 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6240 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6241 6242 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6243 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6244 if (have_link_key && security_level_sufficient){ 6245 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6246 } else { 6247 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6248 } 6249 return true; 6250 } 6251 6252 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6253 log_info("denying to pin request"); 6254 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6255 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6256 return true; 6257 } 6258 6259 // security assessment requires remote features 6260 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6261 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6262 hci_ssp_assess_security_on_io_cap_request(connection); 6263 // 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 6264 } 6265 6266 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6267 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6268 // set authentication requirements: 6269 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6270 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6271 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6272 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6273 authreq |= 1; 6274 } 6275 bool bonding = hci_stack->bondable; 6276 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6277 // if we have received IO Cap Response, we're in responder role 6278 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6279 if (bonding && !remote_bonding){ 6280 log_info("Remote not bonding, dropping local flag"); 6281 bonding = false; 6282 } 6283 } 6284 if (bonding){ 6285 if (connection->bonding_flags & BONDING_DEDICATED){ 6286 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6287 } else { 6288 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6289 } 6290 } 6291 uint8_t have_oob_data = 0; 6292 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6293 if (connection->classic_oob_c_192 != NULL){ 6294 have_oob_data |= 1; 6295 } 6296 if (connection->classic_oob_c_256 != NULL){ 6297 have_oob_data |= 2; 6298 } 6299 #endif 6300 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6301 return true; 6302 } 6303 6304 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6305 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6306 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6307 return true; 6308 } 6309 6310 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6311 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6312 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6313 const uint8_t zero[16] = { 0 }; 6314 const uint8_t * r_192 = zero; 6315 const uint8_t * c_192 = zero; 6316 const uint8_t * r_256 = zero; 6317 const uint8_t * c_256 = zero; 6318 // verify P-256 OOB 6319 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6320 c_256 = connection->classic_oob_c_256; 6321 if (connection->classic_oob_r_256 != NULL) { 6322 r_256 = connection->classic_oob_r_256; 6323 } 6324 } 6325 // verify P-192 OOB 6326 if ((connection->classic_oob_c_192 != NULL)) { 6327 c_192 = connection->classic_oob_c_192; 6328 if (connection->classic_oob_r_192 != NULL) { 6329 r_192 = connection->classic_oob_r_192; 6330 } 6331 } 6332 6333 // assess security 6334 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6335 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6336 if (need_level_4 && !can_reach_level_4){ 6337 log_info("Level 4 required, but not possible -> abort"); 6338 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6339 // send oob negative reply 6340 c_256 = NULL; 6341 c_192 = NULL; 6342 } 6343 6344 // Reply 6345 if (c_256 != zero) { 6346 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6347 } else if (c_192 != zero){ 6348 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6349 } else { 6350 hci_stack->classic_oob_con_handle = connection->con_handle; 6351 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6352 } 6353 return true; 6354 } 6355 #endif 6356 6357 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6358 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6359 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6360 return true; 6361 } 6362 6363 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6364 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6365 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6366 return true; 6367 } 6368 6369 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6370 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6371 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6372 return true; 6373 } 6374 6375 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6376 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6377 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6378 connection->state = SENT_DISCONNECT; 6379 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6380 return true; 6381 } 6382 6383 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6384 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6385 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6386 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6387 return true; 6388 } 6389 6390 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6391 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6392 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6393 return true; 6394 } 6395 6396 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6397 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6398 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6399 return true; 6400 } 6401 6402 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6403 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6404 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6405 return true; 6406 } 6407 6408 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6409 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6410 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6411 return true; 6412 } 6413 6414 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6415 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6416 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6417 return true; 6418 } 6419 #endif 6420 6421 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6422 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6423 #ifdef ENABLE_CLASSIC 6424 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6425 #endif 6426 if (connection->state != SENT_DISCONNECT){ 6427 connection->state = SENT_DISCONNECT; 6428 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6429 return true; 6430 } 6431 } 6432 6433 #ifdef ENABLE_CLASSIC 6434 uint16_t sniff_min_interval; 6435 switch (connection->sniff_min_interval){ 6436 case 0: 6437 break; 6438 case 0xffff: 6439 connection->sniff_min_interval = 0; 6440 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6441 return true; 6442 default: 6443 sniff_min_interval = connection->sniff_min_interval; 6444 connection->sniff_min_interval = 0; 6445 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6446 return true; 6447 } 6448 6449 if (connection->sniff_subrating_max_latency != 0xffff){ 6450 uint16_t max_latency = connection->sniff_subrating_max_latency; 6451 connection->sniff_subrating_max_latency = 0; 6452 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6453 return true; 6454 } 6455 6456 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6457 uint8_t service_type = (uint8_t) connection->qos_service_type; 6458 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6459 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); 6460 return true; 6461 } 6462 6463 if (connection->request_role != HCI_ROLE_INVALID){ 6464 hci_role_t role = connection->request_role; 6465 connection->request_role = HCI_ROLE_INVALID; 6466 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6467 return true; 6468 } 6469 #endif 6470 6471 if (connection->gap_connection_tasks != 0){ 6472 #ifdef ENABLE_CLASSIC 6473 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6474 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6475 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6476 return true; 6477 } 6478 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6479 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6480 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6481 return true; 6482 } 6483 #endif 6484 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6485 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6486 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6487 return true; 6488 } 6489 } 6490 6491 #ifdef ENABLE_BLE 6492 switch (connection->le_con_parameter_update_state){ 6493 // response to L2CAP CON PARAMETER UPDATE REQUEST 6494 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6495 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6496 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6497 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6498 0x0000, 0xffff); 6499 return true; 6500 case CON_PARAMETER_UPDATE_REPLY: 6501 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6502 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6503 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6504 0x0000, 0xffff); 6505 return true; 6506 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6507 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6508 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6509 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6510 return true; 6511 default: 6512 break; 6513 } 6514 if (connection->le_phy_update_all_phys != 0xffu){ 6515 uint8_t all_phys = connection->le_phy_update_all_phys; 6516 connection->le_phy_update_all_phys = 0xff; 6517 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); 6518 return true; 6519 } 6520 #endif 6521 } 6522 return false; 6523 } 6524 6525 static void hci_run(void){ 6526 6527 // stack state sub statemachines 6528 switch (hci_stack->state) { 6529 case HCI_STATE_INITIALIZING: 6530 hci_initializing_run(); 6531 break; 6532 case HCI_STATE_HALTING: 6533 hci_halting_run(); 6534 break; 6535 case HCI_STATE_FALLING_ASLEEP: 6536 hci_falling_asleep_run(); 6537 break; 6538 default: 6539 break; 6540 } 6541 6542 // allow to run after initialization to working transition 6543 if (hci_stack->state != HCI_STATE_WORKING){ 6544 return; 6545 } 6546 6547 bool done; 6548 6549 // send continuation fragments first, as they block the prepared packet buffer 6550 done = hci_run_acl_fragments(); 6551 if (done) return; 6552 6553 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6554 done = hci_run_iso_fragments(); 6555 if (done) return; 6556 #endif 6557 6558 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6559 // send host num completed packets next as they don't require num_cmd_packets > 0 6560 if (!hci_can_send_comand_packet_transport()) return; 6561 if (hci_stack->host_completed_packets){ 6562 hci_host_num_completed_packets(); 6563 return; 6564 } 6565 #endif 6566 6567 if (!hci_can_send_command_packet_now()) return; 6568 6569 // global/non-connection oriented commands 6570 6571 6572 #ifdef ENABLE_CLASSIC 6573 // general gap classic 6574 done = hci_run_general_gap_classic(); 6575 if (done) return; 6576 #endif 6577 6578 #ifdef ENABLE_BLE 6579 // general gap le 6580 done = hci_run_general_gap_le(); 6581 if (done) return; 6582 6583 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6584 // ISO related tasks, e.g. BIG create/terminate/sync 6585 done = hci_run_iso_tasks(); 6586 if (done) return; 6587 #endif 6588 #endif 6589 6590 // send pending HCI commands 6591 hci_run_general_pending_commands(); 6592 } 6593 6594 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6595 // house-keeping 6596 6597 #ifdef ENABLE_CLASSIC 6598 bd_addr_t addr; 6599 hci_connection_t * conn; 6600 #endif 6601 #ifdef ENABLE_LE_CENTRAL 6602 uint8_t initiator_filter_policy; 6603 #endif 6604 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6605 uint8_t i; 6606 uint8_t num_cis; 6607 hci_con_handle_t cis_handle; 6608 uint8_t status; 6609 #endif 6610 6611 uint16_t opcode = little_endian_read_16(packet, 0); 6612 switch (opcode) { 6613 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6614 hci_stack->loopback_mode = packet[3]; 6615 break; 6616 6617 #ifdef ENABLE_CLASSIC 6618 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6619 reverse_bd_addr(&packet[3], addr); 6620 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6621 6622 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6623 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6624 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6625 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6626 } 6627 6628 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6629 if (!conn) { 6630 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6631 if (!conn) { 6632 // notify client that alloc failed 6633 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6634 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6635 } 6636 conn->state = SEND_CREATE_CONNECTION; 6637 conn->role = HCI_ROLE_MASTER; 6638 } 6639 6640 log_info("conn state %u", conn->state); 6641 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6642 switch (conn->state) { 6643 // if connection active exists 6644 case OPEN: 6645 // and OPEN, emit connection complete command 6646 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6647 // packet not sent to controller 6648 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6649 case RECEIVED_DISCONNECTION_COMPLETE: 6650 // create connection triggered in disconnect complete event, let's do it now 6651 break; 6652 case SEND_CREATE_CONNECTION: 6653 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6654 if (hci_classic_operation_active()){ 6655 return ERROR_CODE_SUCCESS; 6656 } 6657 #endif 6658 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6659 break; 6660 default: 6661 // otherwise, just ignore as it is already in the open process 6662 // packet not sent to controller 6663 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6664 } 6665 conn->state = SENT_CREATE_CONNECTION; 6666 6667 // track outgoing connection 6668 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6669 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6670 break; 6671 6672 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6673 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6674 // setup_synchronous_connection? Voice setting at offset 22 6675 // TODO: compare to current setting if sco connection already active 6676 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6677 break; 6678 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6679 // accept_synchronous_connection? Voice setting at offset 18 6680 // TODO: compare to current setting if sco connection already active 6681 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6682 // track outgoing connection 6683 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6684 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6685 break; 6686 #endif 6687 #endif 6688 6689 #ifdef ENABLE_BLE 6690 #ifdef ENABLE_LE_CENTRAL 6691 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6692 // white list used? 6693 initiator_filter_policy = packet[7]; 6694 switch (initiator_filter_policy) { 6695 case 0: 6696 // whitelist not used 6697 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6698 break; 6699 case 1: 6700 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6701 break; 6702 default: 6703 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6704 break; 6705 } 6706 // track outgoing connection 6707 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6708 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6709 break; 6710 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6711 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6712 break; 6713 #endif 6714 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6715 #ifdef ENABLE_LE_CENTRAL 6716 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6717 status = ERROR_CODE_SUCCESS; 6718 num_cis = packet[3]; 6719 // setup hci_iso_streams 6720 for (i=0;i<num_cis;i++){ 6721 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6722 status = hci_iso_stream_create(cis_handle, 0xff); 6723 if (status != ERROR_CODE_SUCCESS) { 6724 break; 6725 } 6726 } 6727 // free structs on error 6728 if (status != ERROR_CODE_SUCCESS){ 6729 hci_iso_stream_requested_finalize(0xff); 6730 return status; 6731 } 6732 break; 6733 #endif /* ENABLE_LE_CENTRAL */ 6734 #ifdef ENABLE_LE_PERIPHERAL 6735 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6736 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6737 status = hci_iso_stream_create(cis_handle, 0xff); 6738 if (status != ERROR_CODE_SUCCESS){ 6739 return status; 6740 } 6741 break; 6742 #endif /* ENABLE_LE_PERIPHERAL */ 6743 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6744 #endif /* ENABLE_BLE */ 6745 default: 6746 break; 6747 } 6748 6749 hci_stack->num_cmd_packets--; 6750 6751 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6752 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6753 if (err != 0){ 6754 return ERROR_CODE_HARDWARE_FAILURE; 6755 } 6756 return ERROR_CODE_SUCCESS; 6757 } 6758 6759 // disconnect because of security block 6760 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6761 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6762 if (!connection) return; 6763 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6764 } 6765 6766 6767 // Configure Secure Simple Pairing 6768 6769 #ifdef ENABLE_CLASSIC 6770 6771 // enable will enable SSP during init 6772 void gap_ssp_set_enable(int enable){ 6773 hci_stack->ssp_enable = enable; 6774 } 6775 6776 static int hci_local_ssp_activated(void){ 6777 return gap_ssp_supported() && hci_stack->ssp_enable; 6778 } 6779 6780 // if set, BTstack will respond to io capability request using authentication requirement 6781 void gap_ssp_set_io_capability(int io_capability){ 6782 hci_stack->ssp_io_capability = io_capability; 6783 } 6784 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6785 hci_stack->ssp_authentication_requirement = authentication_requirement; 6786 } 6787 6788 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6789 void gap_ssp_set_auto_accept(int auto_accept){ 6790 hci_stack->ssp_auto_accept = auto_accept; 6791 } 6792 6793 void gap_secure_connections_enable(bool enable){ 6794 hci_stack->secure_connections_enable = enable; 6795 } 6796 bool gap_secure_connections_active(void){ 6797 return hci_stack->secure_connections_active; 6798 } 6799 6800 #endif 6801 6802 // va_list part of hci_send_cmd 6803 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6804 if (!hci_can_send_command_packet_now()){ 6805 log_error("hci_send_cmd called but cannot send packet now"); 6806 return ERROR_CODE_COMMAND_DISALLOWED; 6807 } 6808 6809 // for HCI INITIALIZATION 6810 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6811 hci_stack->last_cmd_opcode = cmd->opcode; 6812 6813 hci_reserve_packet_buffer(); 6814 uint8_t * packet = hci_stack->hci_packet_buffer; 6815 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6816 uint8_t status = hci_send_cmd_packet(packet, size); 6817 6818 // release packet buffer on error or for synchronous transport implementations 6819 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6820 hci_release_packet_buffer(); 6821 hci_emit_transport_packet_sent(); 6822 } 6823 6824 return status; 6825 } 6826 6827 /** 6828 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6829 */ 6830 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6831 va_list argptr; 6832 va_start(argptr, cmd); 6833 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6834 va_end(argptr); 6835 return status; 6836 } 6837 6838 // Create various non-HCI events. 6839 // TODO: generalize, use table similar to hci_create_command 6840 6841 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6842 // dump packet 6843 if (dump) { 6844 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6845 } 6846 6847 // dispatch to all event handlers 6848 btstack_linked_list_iterator_t it; 6849 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6850 while (btstack_linked_list_iterator_has_next(&it)){ 6851 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6852 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6853 } 6854 } 6855 6856 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6857 if (!hci_stack->acl_packet_handler) return; 6858 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6859 } 6860 6861 #ifdef ENABLE_CLASSIC 6862 static void hci_notify_if_sco_can_send_now(void){ 6863 // notify SCO sender if waiting 6864 if (!hci_stack->sco_waiting_for_can_send_now) return; 6865 if (hci_can_send_sco_packet_now()){ 6866 hci_stack->sco_waiting_for_can_send_now = 0; 6867 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6868 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6869 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6870 } 6871 } 6872 6873 // parsing end emitting has been merged to reduce code size 6874 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6875 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6876 6877 uint8_t * eir_data; 6878 ad_context_t context; 6879 const uint8_t * name; 6880 uint8_t name_len; 6881 6882 if (size < 3) return; 6883 6884 int event_type = hci_event_packet_get_type(packet); 6885 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6886 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6887 6888 switch (event_type){ 6889 case HCI_EVENT_INQUIRY_RESULT: 6890 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6891 if (size != (3 + (num_responses * 14))) return; 6892 break; 6893 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6894 if (size != 257) return; 6895 if (num_responses != 1) return; 6896 break; 6897 default: 6898 return; 6899 } 6900 6901 // event[1] is set at the end 6902 int i; 6903 for (i=0; i<num_responses;i++){ 6904 memset(event, 0, sizeof(event)); 6905 event[0] = GAP_EVENT_INQUIRY_RESULT; 6906 uint8_t event_size = 27; // if name is not set by EIR 6907 6908 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 6909 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 6910 (void)memcpy(&event[9], 6911 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 6912 3); // class of device 6913 (void)memcpy(&event[12], 6914 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 6915 2); // clock offset 6916 6917 switch (event_type){ 6918 case HCI_EVENT_INQUIRY_RESULT: 6919 // 14,15,16,17 = 0, size 18 6920 break; 6921 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6922 event[14] = 1; 6923 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6924 // 16,17 = 0, size 18 6925 break; 6926 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6927 event[14] = 1; 6928 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 6929 // EIR packets only contain a single inquiry response 6930 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 6931 name = NULL; 6932 // Iterate over EIR data 6933 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 6934 uint8_t data_type = ad_iterator_get_data_type(&context); 6935 uint8_t data_size = ad_iterator_get_data_len(&context); 6936 const uint8_t * data = ad_iterator_get_data(&context); 6937 // Prefer Complete Local Name over Shortened Local Name 6938 switch (data_type){ 6939 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 6940 if (name) continue; 6941 /* fall through */ 6942 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 6943 name = data; 6944 name_len = data_size; 6945 break; 6946 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 6947 if (data_size != 8) break; 6948 event[16] = 1; 6949 memcpy(&event[17], data, 8); 6950 break; 6951 default: 6952 break; 6953 } 6954 } 6955 if (name){ 6956 event[25] = 1; 6957 // truncate name if needed 6958 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 6959 event[26] = len; 6960 (void)memcpy(&event[27], name, len); 6961 event_size += len; 6962 } 6963 break; 6964 default: 6965 return; 6966 } 6967 event[1] = event_size - 2; 6968 hci_emit_event(event, event_size, 1); 6969 } 6970 } 6971 #endif 6972 6973 void hci_emit_state(void){ 6974 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 6975 uint8_t event[3]; 6976 event[0] = BTSTACK_EVENT_STATE; 6977 event[1] = sizeof(event) - 2u; 6978 event[2] = hci_stack->state; 6979 hci_emit_event(event, sizeof(event), 1); 6980 } 6981 6982 #ifdef ENABLE_CLASSIC 6983 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 6984 uint8_t event[13]; 6985 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 6986 event[1] = sizeof(event) - 2; 6987 event[2] = status; 6988 little_endian_store_16(event, 3, con_handle); 6989 reverse_bd_addr(address, &event[5]); 6990 event[11] = 1; // ACL connection 6991 event[12] = 0; // encryption disabled 6992 hci_emit_event(event, sizeof(event), 1); 6993 } 6994 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 6995 if (disable_l2cap_timeouts) return; 6996 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 6997 uint8_t event[4]; 6998 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 6999 event[1] = sizeof(event) - 2; 7000 little_endian_store_16(event, 2, conn->con_handle); 7001 hci_emit_event(event, sizeof(event), 1); 7002 } 7003 #endif 7004 7005 #ifdef ENABLE_BLE 7006 #ifdef ENABLE_LE_CENTRAL 7007 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){ 7008 uint8_t event[21]; 7009 event[0] = HCI_EVENT_LE_META; 7010 event[1] = sizeof(event) - 2u; 7011 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7012 event[3] = status; 7013 little_endian_store_16(event, 4, con_handle); 7014 event[6] = 0; // TODO: role 7015 event[7] = address_type; 7016 reverse_bd_addr(address, &event[8]); 7017 little_endian_store_16(event, 14, 0); // interval 7018 little_endian_store_16(event, 16, 0); // latency 7019 little_endian_store_16(event, 18, 0); // supervision timeout 7020 event[20] = 0; // master clock accuracy 7021 hci_emit_event(event, sizeof(event), 1); 7022 } 7023 #endif 7024 #endif 7025 7026 static void hci_emit_transport_packet_sent(void){ 7027 // notify upper stack that it might be possible to send again 7028 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7029 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7030 } 7031 7032 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7033 uint8_t event[6]; 7034 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7035 event[1] = sizeof(event) - 2u; 7036 event[2] = 0; // status = OK 7037 little_endian_store_16(event, 3, con_handle); 7038 event[5] = reason; 7039 hci_emit_event(event, sizeof(event), 1); 7040 } 7041 7042 static void hci_emit_nr_connections_changed(void){ 7043 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7044 uint8_t event[3]; 7045 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7046 event[1] = sizeof(event) - 2u; 7047 event[2] = nr_hci_connections(); 7048 hci_emit_event(event, sizeof(event), 1); 7049 } 7050 7051 static void hci_emit_hci_open_failed(void){ 7052 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7053 uint8_t event[2]; 7054 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7055 event[1] = sizeof(event) - 2u; 7056 hci_emit_event(event, sizeof(event), 1); 7057 } 7058 7059 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7060 log_info("hci_emit_dedicated_bonding_result %u ", status); 7061 uint8_t event[9]; 7062 int pos = 0; 7063 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7064 event[pos++] = sizeof(event) - 2u; 7065 event[pos++] = status; 7066 reverse_bd_addr(address, &event[pos]); 7067 hci_emit_event(event, sizeof(event), 1); 7068 } 7069 7070 7071 #ifdef ENABLE_CLASSIC 7072 7073 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7074 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7075 uint8_t event[5]; 7076 int pos = 0; 7077 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7078 event[pos++] = sizeof(event) - 2; 7079 little_endian_store_16(event, 2, con_handle); 7080 pos += 2; 7081 event[pos++] = level; 7082 hci_emit_event(event, sizeof(event), 1); 7083 } 7084 7085 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7086 if (!connection) return LEVEL_0; 7087 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7088 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7089 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7090 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7091 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7092 // LEVEL 4 always requires 128 bit encrytion key size 7093 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7094 security_level = LEVEL_3; 7095 } 7096 return security_level; 7097 } 7098 7099 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7100 uint8_t event[4]; 7101 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7102 event[1] = sizeof(event) - 2; 7103 event[2] = discoverable; 7104 event[3] = connectable; 7105 hci_emit_event(event, sizeof(event), 1); 7106 } 7107 7108 // query if remote side supports eSCO 7109 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7110 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7111 if (!connection) return false; 7112 return (connection->remote_supported_features[0] & 1) != 0; 7113 } 7114 7115 static bool hci_ssp_supported(hci_connection_t * connection){ 7116 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7117 return (connection->bonding_flags & mask) == mask; 7118 } 7119 7120 // query if remote side supports SSP 7121 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7122 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7123 if (!connection) return false; 7124 return hci_ssp_supported(connection) ? 1 : 0; 7125 } 7126 7127 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7128 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7129 } 7130 7131 /** 7132 * Check if remote supported features query has completed 7133 */ 7134 bool hci_remote_features_available(hci_con_handle_t handle){ 7135 hci_connection_t * connection = hci_connection_for_handle(handle); 7136 if (!connection) return false; 7137 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7138 } 7139 7140 /** 7141 * Trigger remote supported features query 7142 */ 7143 7144 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7145 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7146 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7147 } 7148 } 7149 7150 void hci_remote_features_query(hci_con_handle_t con_handle){ 7151 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7152 if (!connection) return; 7153 hci_trigger_remote_features_for_connection(connection); 7154 hci_run(); 7155 } 7156 7157 // GAP API 7158 /** 7159 * @bbrief enable/disable bonding. default is enabled 7160 * @praram enabled 7161 */ 7162 void gap_set_bondable_mode(int enable){ 7163 hci_stack->bondable = enable ? 1 : 0; 7164 } 7165 /** 7166 * @brief Get bondable mode. 7167 * @return 1 if bondable 7168 */ 7169 int gap_get_bondable_mode(void){ 7170 return hci_stack->bondable; 7171 } 7172 7173 /** 7174 * @brief map link keys to security levels 7175 */ 7176 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7177 switch (link_key_type){ 7178 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7179 return LEVEL_4; 7180 case COMBINATION_KEY: 7181 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7182 return LEVEL_3; 7183 default: 7184 return LEVEL_2; 7185 } 7186 } 7187 7188 /** 7189 * @brief map link keys to secure connection yes/no 7190 */ 7191 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7192 switch (link_key_type){ 7193 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7194 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7195 return true; 7196 default: 7197 return false; 7198 } 7199 } 7200 7201 /** 7202 * @brief map link keys to authenticated 7203 */ 7204 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7205 switch (link_key_type){ 7206 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7207 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7208 return true; 7209 default: 7210 return false; 7211 } 7212 } 7213 7214 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7215 log_info("gap_mitm_protection_required_for_security_level %u", level); 7216 return level > LEVEL_2; 7217 } 7218 7219 /** 7220 * @brief get current security level 7221 */ 7222 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7223 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7224 if (!connection) return LEVEL_0; 7225 return gap_security_level_for_connection(connection); 7226 } 7227 7228 /** 7229 * @brief request connection to device to 7230 * @result GAP_AUTHENTICATION_RESULT 7231 */ 7232 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7233 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7234 if (!connection){ 7235 hci_emit_security_level(con_handle, LEVEL_0); 7236 return; 7237 } 7238 7239 btstack_assert(hci_is_le_connection(connection) == false); 7240 7241 // 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) 7242 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7243 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7244 requested_level = LEVEL_4; 7245 } 7246 7247 gap_security_level_t current_level = gap_security_level(con_handle); 7248 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7249 requested_level, connection->requested_security_level, current_level); 7250 7251 // authentication active if authentication request was sent or planned level > 0 7252 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7253 if (authentication_active){ 7254 // authentication already active 7255 if (connection->requested_security_level < requested_level){ 7256 // increase requested level as new level is higher 7257 // TODO: handle re-authentication when done 7258 connection->requested_security_level = requested_level; 7259 } 7260 } else { 7261 // no request active, notify if security sufficient 7262 if (requested_level <= current_level){ 7263 hci_emit_security_level(con_handle, current_level); 7264 return; 7265 } 7266 7267 // store request 7268 connection->requested_security_level = requested_level; 7269 7270 // start to authenticate connection 7271 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7272 7273 // request remote features if not already active, also trigger hci_run 7274 hci_remote_features_query(con_handle); 7275 } 7276 } 7277 7278 /** 7279 * @brief start dedicated bonding with device. disconnect after bonding 7280 * @param device 7281 * @param request MITM protection 7282 * @result GAP_DEDICATED_BONDING_COMPLETE 7283 */ 7284 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7285 7286 // create connection state machine 7287 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7288 7289 if (!connection){ 7290 return BTSTACK_MEMORY_ALLOC_FAILED; 7291 } 7292 7293 // delete linkn key 7294 gap_drop_link_key_for_bd_addr(device); 7295 7296 // configure LEVEL_2/3, dedicated bonding 7297 connection->state = SEND_CREATE_CONNECTION; 7298 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7299 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7300 connection->bonding_flags = BONDING_DEDICATED; 7301 7302 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7303 7304 // handle: connnection failure (connection complete != ok) 7305 // handle: authentication failure 7306 // handle: disconnect on done 7307 7308 hci_run(); 7309 7310 return 0; 7311 } 7312 7313 void gap_set_local_name(const char * local_name){ 7314 hci_stack->local_name = local_name; 7315 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7316 // also update EIR if not set by user 7317 if (hci_stack->eir_data == NULL){ 7318 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7319 } 7320 hci_run(); 7321 } 7322 #endif 7323 7324 7325 #ifdef ENABLE_BLE 7326 7327 #ifdef ENABLE_LE_CENTRAL 7328 void gap_start_scan(void){ 7329 hci_stack->le_scanning_enabled = true; 7330 hci_run(); 7331 } 7332 7333 void gap_stop_scan(void){ 7334 hci_stack->le_scanning_enabled = false; 7335 hci_run(); 7336 } 7337 7338 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7339 hci_stack->le_scan_type = scan_type; 7340 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7341 hci_stack->le_scan_interval = scan_interval; 7342 hci_stack->le_scan_window = scan_window; 7343 hci_stack->le_scanning_param_update = true; 7344 hci_run(); 7345 } 7346 7347 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7348 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7349 } 7350 7351 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7352 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7353 if (!conn){ 7354 // disallow if le connection is already outgoing 7355 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7356 log_error("le connection already active"); 7357 return ERROR_CODE_COMMAND_DISALLOWED; 7358 } 7359 7360 log_info("gap_connect: no connection exists yet, creating context"); 7361 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7362 if (!conn){ 7363 // notify client that alloc failed 7364 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7365 log_info("gap_connect: failed to alloc hci_connection_t"); 7366 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7367 } 7368 7369 // set le connecting state 7370 if (hci_is_le_connection_type(addr_type)){ 7371 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7372 } 7373 7374 conn->state = SEND_CREATE_CONNECTION; 7375 log_info("gap_connect: send create connection next"); 7376 hci_run(); 7377 return ERROR_CODE_SUCCESS; 7378 } 7379 7380 if (!hci_is_le_connection(conn) || 7381 (conn->state == SEND_CREATE_CONNECTION) || 7382 (conn->state == SENT_CREATE_CONNECTION)) { 7383 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7384 log_error("gap_connect: classic connection or connect is already being created"); 7385 return GATT_CLIENT_IN_WRONG_STATE; 7386 } 7387 7388 // check if connection was just disconnected 7389 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7390 log_info("gap_connect: send create connection (again)"); 7391 conn->state = SEND_CREATE_CONNECTION; 7392 hci_run(); 7393 return ERROR_CODE_SUCCESS; 7394 } 7395 7396 log_info("gap_connect: context exists with state %u", conn->state); 7397 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7398 hci_run(); 7399 return ERROR_CODE_SUCCESS; 7400 } 7401 7402 // @assumption: only a single outgoing LE Connection exists 7403 static hci_connection_t * gap_get_outgoing_connection(void){ 7404 btstack_linked_item_t *it; 7405 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7406 hci_connection_t * conn = (hci_connection_t *) it; 7407 if (!hci_is_le_connection(conn)) continue; 7408 switch (conn->state){ 7409 case SEND_CREATE_CONNECTION: 7410 case SENT_CREATE_CONNECTION: 7411 case SENT_CANCEL_CONNECTION: 7412 return conn; 7413 default: 7414 break; 7415 }; 7416 } 7417 return NULL; 7418 } 7419 7420 uint8_t gap_connect_cancel(void){ 7421 hci_connection_t * conn; 7422 switch (hci_stack->le_connecting_request){ 7423 case LE_CONNECTING_IDLE: 7424 break; 7425 case LE_CONNECTING_WHITELIST: 7426 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7427 hci_run(); 7428 break; 7429 case LE_CONNECTING_DIRECT: 7430 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7431 conn = gap_get_outgoing_connection(); 7432 if (conn == NULL){ 7433 hci_run(); 7434 } else { 7435 switch (conn->state){ 7436 case SEND_CREATE_CONNECTION: 7437 // skip sending create connection and emit event instead 7438 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7439 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7440 btstack_memory_hci_connection_free( conn ); 7441 break; 7442 case SENT_CREATE_CONNECTION: 7443 // request to send cancel connection 7444 conn->state = SEND_CANCEL_CONNECTION; 7445 hci_run(); 7446 break; 7447 default: 7448 break; 7449 } 7450 } 7451 break; 7452 default: 7453 btstack_unreachable(); 7454 break; 7455 } 7456 return ERROR_CODE_SUCCESS; 7457 } 7458 7459 /** 7460 * @brief Set connection parameters for outgoing connections 7461 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7462 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7463 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7464 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7465 * @param conn_latency, default: 4 7466 * @param supervision_timeout (unit: 10ms), default: 720 ms 7467 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7468 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7469 */ 7470 7471 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7472 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7473 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7474 hci_stack->le_connection_scan_interval = conn_scan_interval; 7475 hci_stack->le_connection_scan_window = conn_scan_window; 7476 hci_stack->le_connection_interval_min = conn_interval_min; 7477 hci_stack->le_connection_interval_max = conn_interval_max; 7478 hci_stack->le_connection_latency = conn_latency; 7479 hci_stack->le_supervision_timeout = supervision_timeout; 7480 hci_stack->le_minimum_ce_length = min_ce_length; 7481 hci_stack->le_maximum_ce_length = max_ce_length; 7482 } 7483 #endif 7484 7485 /** 7486 * @brief Updates the connection parameters for a given LE connection 7487 * @param handle 7488 * @param conn_interval_min (unit: 1.25ms) 7489 * @param conn_interval_max (unit: 1.25ms) 7490 * @param conn_latency 7491 * @param supervision_timeout (unit: 10ms) 7492 * @return 0 if ok 7493 */ 7494 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7495 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7496 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7497 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7498 connection->le_conn_interval_min = conn_interval_min; 7499 connection->le_conn_interval_max = conn_interval_max; 7500 connection->le_conn_latency = conn_latency; 7501 connection->le_supervision_timeout = supervision_timeout; 7502 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7503 hci_run(); 7504 return 0; 7505 } 7506 7507 /** 7508 * @brief Request an update of the connection parameter for a given LE connection 7509 * @param handle 7510 * @param conn_interval_min (unit: 1.25ms) 7511 * @param conn_interval_max (unit: 1.25ms) 7512 * @param conn_latency 7513 * @param supervision_timeout (unit: 10ms) 7514 * @return 0 if ok 7515 */ 7516 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7517 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7518 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7519 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7520 connection->le_conn_interval_min = conn_interval_min; 7521 connection->le_conn_interval_max = conn_interval_max; 7522 connection->le_conn_latency = conn_latency; 7523 connection->le_supervision_timeout = supervision_timeout; 7524 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7525 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7526 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7527 return 0; 7528 } 7529 7530 #ifdef ENABLE_LE_PERIPHERAL 7531 7532 /** 7533 * @brief Set Advertisement Data 7534 * @param advertising_data_length 7535 * @param advertising_data (max 31 octets) 7536 * @note data is not copied, pointer has to stay valid 7537 */ 7538 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7539 hci_stack->le_advertisements_data_len = advertising_data_length; 7540 hci_stack->le_advertisements_data = advertising_data; 7541 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7542 hci_run(); 7543 } 7544 7545 /** 7546 * @brief Set Scan Response Data 7547 * @param advertising_data_length 7548 * @param advertising_data (max 31 octets) 7549 * @note data is not copied, pointer has to stay valid 7550 */ 7551 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7552 hci_stack->le_scan_response_data_len = scan_response_data_length; 7553 hci_stack->le_scan_response_data = scan_response_data; 7554 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7555 hci_run(); 7556 } 7557 7558 /** 7559 * @brief Set Advertisement Parameters 7560 * @param adv_int_min 7561 * @param adv_int_max 7562 * @param adv_type 7563 * @param direct_address_type 7564 * @param direct_address 7565 * @param channel_map 7566 * @param filter_policy 7567 * 7568 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7569 */ 7570 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7571 uint8_t direct_address_typ, bd_addr_t direct_address, 7572 uint8_t channel_map, uint8_t filter_policy) { 7573 7574 hci_stack->le_advertisements_interval_min = adv_int_min; 7575 hci_stack->le_advertisements_interval_max = adv_int_max; 7576 hci_stack->le_advertisements_type = adv_type; 7577 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7578 hci_stack->le_advertisements_channel_map = channel_map; 7579 hci_stack->le_advertisements_filter_policy = filter_policy; 7580 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7581 6); 7582 7583 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7584 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7585 hci_run(); 7586 } 7587 7588 /** 7589 * @brief Enable/Disable Advertisements 7590 * @param enabled 7591 */ 7592 void gap_advertisements_enable(int enabled){ 7593 if (enabled == 0){ 7594 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7595 } else { 7596 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7597 } 7598 hci_update_advertisements_enabled_for_current_roles(); 7599 hci_run(); 7600 } 7601 7602 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7603 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7604 btstack_linked_list_iterator_t it; 7605 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7606 while (btstack_linked_list_iterator_has_next(&it)){ 7607 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7608 if ( item->advertising_handle == advertising_handle ) { 7609 return item; 7610 } 7611 } 7612 return NULL; 7613 } 7614 7615 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7616 // find free advertisement handle 7617 uint8_t advertisement_handle; 7618 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7619 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7620 } 7621 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7622 // clear 7623 memset(storage, 0, sizeof(le_advertising_set_t)); 7624 // copy params 7625 storage->advertising_handle = advertisement_handle; 7626 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7627 // add to list 7628 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7629 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7630 *out_advertising_handle = advertisement_handle; 7631 // set tasks and start 7632 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7633 hci_run(); 7634 return ERROR_CODE_SUCCESS; 7635 } 7636 7637 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7638 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7639 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7640 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7641 // set tasks and start 7642 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7643 hci_run(); 7644 return ERROR_CODE_SUCCESS; 7645 } 7646 7647 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7648 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7649 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7650 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7651 return ERROR_CODE_SUCCESS; 7652 } 7653 7654 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7655 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7656 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7657 memcpy(advertising_set->random_address, random_address, 6); 7658 // set tasks and start 7659 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7660 hci_run(); 7661 return ERROR_CODE_SUCCESS; 7662 } 7663 7664 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7665 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7666 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7667 advertising_set->adv_data = advertising_data; 7668 advertising_set->adv_data_len = advertising_data_length; 7669 // set tasks and start 7670 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7671 hci_run(); 7672 return ERROR_CODE_SUCCESS; 7673 } 7674 7675 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){ 7676 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7677 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7678 advertising_set->scan_data = scan_response_data; 7679 advertising_set->scan_data_len = scan_response_data_length; 7680 // set tasks and start 7681 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7682 hci_run(); 7683 return ERROR_CODE_SUCCESS; 7684 } 7685 7686 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7687 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7688 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7689 advertising_set->enable_timeout = timeout; 7690 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7691 // set tasks and start 7692 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7693 hci_run(); 7694 return ERROR_CODE_SUCCESS; 7695 } 7696 7697 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7698 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7699 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7700 // set tasks and start 7701 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7702 hci_run(); 7703 return ERROR_CODE_SUCCESS; 7704 } 7705 7706 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7707 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7708 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7709 // set tasks and start 7710 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7711 hci_run(); 7712 return ERROR_CODE_SUCCESS; 7713 } 7714 7715 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7716 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7717 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7718 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7719 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7720 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7721 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7722 // set tasks and start 7723 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7724 hci_run(); 7725 return ERROR_CODE_SUCCESS; 7726 } 7727 7728 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7729 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7730 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7731 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7732 return ERROR_CODE_SUCCESS; 7733 } 7734 7735 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7736 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7737 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7738 advertising_set->periodic_data = periodic_data; 7739 advertising_set->periodic_data_len = periodic_data_length; 7740 // set tasks and start 7741 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7742 hci_run(); 7743 return ERROR_CODE_SUCCESS; 7744 } 7745 7746 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7747 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7748 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7749 // set tasks and start 7750 advertising_set->periodic_include_adi = include_adi; 7751 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7752 hci_run(); 7753 return ERROR_CODE_SUCCESS; 7754 } 7755 7756 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7757 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7758 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7759 // set tasks and start 7760 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7761 hci_run(); 7762 return ERROR_CODE_SUCCESS; 7763 } 7764 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7765 7766 #endif 7767 7768 #endif 7769 7770 void hci_le_set_own_address_type(uint8_t own_address_type){ 7771 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7772 if (own_address_type == hci_stack->le_own_addr_type) return; 7773 hci_stack->le_own_addr_type = own_address_type; 7774 7775 #ifdef ENABLE_LE_PERIPHERAL 7776 // update advertisement parameters, too 7777 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7778 hci_run(); 7779 #endif 7780 #ifdef ENABLE_LE_CENTRAL 7781 // note: we don't update scan parameters or modify ongoing connection attempts 7782 #endif 7783 } 7784 7785 void hci_le_random_address_set(const bd_addr_t random_address){ 7786 memcpy(hci_stack->le_random_address, random_address, 6); 7787 hci_stack->le_random_address_set = true; 7788 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7789 hci_run(); 7790 } 7791 7792 #endif 7793 7794 uint8_t gap_disconnect(hci_con_handle_t handle){ 7795 hci_connection_t * conn = hci_connection_for_handle(handle); 7796 if (!conn){ 7797 hci_emit_disconnection_complete(handle, 0); 7798 return 0; 7799 } 7800 // ignore if already disconnected 7801 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7802 return 0; 7803 } 7804 conn->state = SEND_DISCONNECT; 7805 hci_run(); 7806 return 0; 7807 } 7808 7809 int gap_read_rssi(hci_con_handle_t con_handle){ 7810 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7811 if (hci_connection == NULL) return 0; 7812 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7813 hci_run(); 7814 return 1; 7815 } 7816 7817 /** 7818 * @brief Get connection type 7819 * @param con_handle 7820 * @result connection_type 7821 */ 7822 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7823 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7824 if (!conn) return GAP_CONNECTION_INVALID; 7825 switch (conn->address_type){ 7826 case BD_ADDR_TYPE_LE_PUBLIC: 7827 case BD_ADDR_TYPE_LE_RANDOM: 7828 return GAP_CONNECTION_LE; 7829 case BD_ADDR_TYPE_SCO: 7830 return GAP_CONNECTION_SCO; 7831 case BD_ADDR_TYPE_ACL: 7832 return GAP_CONNECTION_ACL; 7833 default: 7834 return GAP_CONNECTION_INVALID; 7835 } 7836 } 7837 7838 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7839 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7840 if (!conn) return HCI_ROLE_INVALID; 7841 return (hci_role_t) conn->role; 7842 } 7843 7844 7845 #ifdef ENABLE_CLASSIC 7846 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7847 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7848 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7849 conn->request_role = role; 7850 hci_run(); 7851 return ERROR_CODE_SUCCESS; 7852 } 7853 #endif 7854 7855 #ifdef ENABLE_BLE 7856 7857 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){ 7858 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7859 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7860 7861 conn->le_phy_update_all_phys = all_phys; 7862 conn->le_phy_update_tx_phys = tx_phys; 7863 conn->le_phy_update_rx_phys = rx_phys; 7864 conn->le_phy_update_phy_options = phy_options; 7865 7866 hci_run(); 7867 7868 return 0; 7869 } 7870 7871 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7872 // check if already in list 7873 btstack_linked_list_iterator_t it; 7874 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7875 while (btstack_linked_list_iterator_has_next(&it)) { 7876 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7877 if (entry->address_type != address_type) { 7878 continue; 7879 } 7880 if (memcmp(entry->address, address, 6) != 0) { 7881 continue; 7882 } 7883 // disallow if already scheduled to add 7884 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7885 return ERROR_CODE_COMMAND_DISALLOWED; 7886 } 7887 // still on controller, but scheduled to remove -> re-add 7888 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7889 return ERROR_CODE_SUCCESS; 7890 } 7891 // alloc and add to list 7892 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7893 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7894 entry->address_type = address_type; 7895 (void)memcpy(entry->address, address, 6); 7896 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7897 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7898 return ERROR_CODE_SUCCESS; 7899 } 7900 7901 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7902 btstack_linked_list_iterator_t it; 7903 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7904 while (btstack_linked_list_iterator_has_next(&it)){ 7905 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7906 if (entry->address_type != address_type) { 7907 continue; 7908 } 7909 if (memcmp(entry->address, address, 6) != 0) { 7910 continue; 7911 } 7912 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7913 // remove from controller if already present 7914 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7915 } else { 7916 // directly remove entry from whitelist 7917 btstack_linked_list_iterator_remove(&it); 7918 btstack_memory_whitelist_entry_free(entry); 7919 } 7920 return ERROR_CODE_SUCCESS; 7921 } 7922 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7923 } 7924 7925 static void hci_whitelist_clear(void){ 7926 btstack_linked_list_iterator_t it; 7927 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7928 while (btstack_linked_list_iterator_has_next(&it)){ 7929 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7930 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 7931 // remove from controller if already present 7932 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 7933 continue; 7934 } 7935 // directly remove entry from whitelist 7936 btstack_linked_list_iterator_remove(&it); 7937 btstack_memory_whitelist_entry_free(entry); 7938 } 7939 } 7940 7941 // free all entries unconditionally 7942 static void hci_whitelist_free(void){ 7943 btstack_linked_list_iterator_t lit; 7944 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 7945 while (btstack_linked_list_iterator_has_next(&lit)){ 7946 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 7947 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 7948 btstack_memory_whitelist_entry_free(entry); 7949 } 7950 } 7951 7952 /** 7953 * @brief Clear Whitelist 7954 * @return 0 if ok 7955 */ 7956 uint8_t gap_whitelist_clear(void){ 7957 hci_whitelist_clear(); 7958 hci_run(); 7959 return ERROR_CODE_SUCCESS; 7960 } 7961 7962 /** 7963 * @brief Add Device to Whitelist 7964 * @param address_typ 7965 * @param address 7966 * @return 0 if ok 7967 */ 7968 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7969 uint8_t status = hci_whitelist_add(address_type, address); 7970 if (status){ 7971 return status; 7972 } 7973 hci_run(); 7974 return ERROR_CODE_SUCCESS; 7975 } 7976 7977 /** 7978 * @brief Remove Device from Whitelist 7979 * @param address_typ 7980 * @param address 7981 * @return 0 if ok 7982 */ 7983 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7984 uint8_t status = hci_whitelist_remove(address_type, address); 7985 if (status){ 7986 return status; 7987 } 7988 hci_run(); 7989 return ERROR_CODE_SUCCESS; 7990 } 7991 7992 #ifdef ENABLE_LE_CENTRAL 7993 /** 7994 * @brief Connect with Whitelist 7995 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 7996 * @return - if ok 7997 */ 7998 uint8_t gap_connect_with_whitelist(void){ 7999 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8000 return ERROR_CODE_COMMAND_DISALLOWED; 8001 } 8002 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8003 hci_run(); 8004 return ERROR_CODE_SUCCESS; 8005 } 8006 8007 /** 8008 * @brief Auto Connection Establishment - Start Connecting to device 8009 * @param address_typ 8010 * @param address 8011 * @return 0 if ok 8012 */ 8013 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8014 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8015 return ERROR_CODE_COMMAND_DISALLOWED; 8016 } 8017 8018 uint8_t status = hci_whitelist_add(address_type, address); 8019 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8020 return status; 8021 } 8022 8023 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8024 8025 hci_run(); 8026 return ERROR_CODE_SUCCESS; 8027 } 8028 8029 /** 8030 * @brief Auto Connection Establishment - Stop Connecting to device 8031 * @param address_typ 8032 * @param address 8033 * @return 0 if ok 8034 */ 8035 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8036 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8037 return ERROR_CODE_COMMAND_DISALLOWED; 8038 } 8039 8040 hci_whitelist_remove(address_type, address); 8041 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8042 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8043 } 8044 hci_run(); 8045 return 0; 8046 } 8047 8048 /** 8049 * @brief Auto Connection Establishment - Stop everything 8050 * @note Convenience function to stop all active auto connection attempts 8051 */ 8052 uint8_t gap_auto_connection_stop_all(void){ 8053 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8054 return ERROR_CODE_COMMAND_DISALLOWED; 8055 } 8056 hci_whitelist_clear(); 8057 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8058 hci_run(); 8059 return ERROR_CODE_SUCCESS; 8060 } 8061 8062 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8063 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8064 if (!conn) return 0; 8065 return conn->le_connection_interval; 8066 } 8067 #endif 8068 #endif 8069 8070 #ifdef ENABLE_CLASSIC 8071 /** 8072 * @brief Set Extended Inquiry Response data 8073 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8074 * @note has to be done before stack starts up 8075 */ 8076 void gap_set_extended_inquiry_response(const uint8_t * data){ 8077 hci_stack->eir_data = data; 8078 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8079 hci_run(); 8080 } 8081 8082 /** 8083 * @brief Start GAP Classic Inquiry 8084 * @param duration in 1.28s units 8085 * @return 0 if ok 8086 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8087 */ 8088 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8089 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8090 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8091 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8092 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8093 } 8094 hci_stack->inquiry_state = duration_in_1280ms_units; 8095 hci_stack->inquiry_max_period_length = 0; 8096 hci_stack->inquiry_min_period_length = 0; 8097 hci_run(); 8098 return 0; 8099 } 8100 8101 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8102 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8103 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8104 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8105 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8106 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8107 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8108 8109 hci_stack->inquiry_state = duration; 8110 hci_stack->inquiry_max_period_length = max_period_length; 8111 hci_stack->inquiry_min_period_length = min_period_length; 8112 hci_run(); 8113 return 0; 8114 } 8115 8116 /** 8117 * @brief Stop GAP Classic Inquiry 8118 * @return 0 if ok 8119 */ 8120 int gap_inquiry_stop(void){ 8121 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8122 // emit inquiry complete event, before it even started 8123 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8124 hci_emit_event(event, sizeof(event), 1); 8125 return 0; 8126 } 8127 switch (hci_stack->inquiry_state){ 8128 case GAP_INQUIRY_STATE_ACTIVE: 8129 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8130 hci_run(); 8131 return ERROR_CODE_SUCCESS; 8132 case GAP_INQUIRY_STATE_PERIODIC: 8133 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8134 hci_run(); 8135 return ERROR_CODE_SUCCESS; 8136 default: 8137 return ERROR_CODE_COMMAND_DISALLOWED; 8138 } 8139 } 8140 8141 void gap_inquiry_set_lap(uint32_t lap){ 8142 hci_stack->inquiry_lap = lap; 8143 } 8144 8145 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8146 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8147 hci_stack->inquiry_scan_window = inquiry_scan_window; 8148 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8149 hci_run(); 8150 } 8151 8152 8153 /** 8154 * @brief Remote Name Request 8155 * @param addr 8156 * @param page_scan_repetition_mode 8157 * @param clock_offset only used when bit 15 is set 8158 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8159 */ 8160 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8161 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8162 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8163 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8164 hci_stack->remote_name_clock_offset = clock_offset; 8165 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8166 hci_run(); 8167 return 0; 8168 } 8169 8170 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8171 hci_stack->gap_pairing_state = state; 8172 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8173 hci_run(); 8174 return 0; 8175 } 8176 8177 /** 8178 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8179 * @param addr 8180 * @param pin_data 8181 * @param pin_len 8182 * @return 0 if ok 8183 */ 8184 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8185 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8186 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8187 hci_stack->gap_pairing_pin_len = pin_len; 8188 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8189 } 8190 8191 /** 8192 * @brief Legacy Pairing Pin Code Response 8193 * @param addr 8194 * @param pin 8195 * @return 0 if ok 8196 */ 8197 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8198 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8199 } 8200 8201 /** 8202 * @brief Abort Legacy Pairing 8203 * @param addr 8204 * @param pin 8205 * @return 0 if ok 8206 */ 8207 int gap_pin_code_negative(bd_addr_t addr){ 8208 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8209 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8210 } 8211 8212 /** 8213 * @brief SSP Passkey Response 8214 * @param addr 8215 * @param passkey 8216 * @return 0 if ok 8217 */ 8218 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8219 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8220 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8221 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8222 } 8223 8224 /** 8225 * @brief Abort SSP Passkey Entry/Pairing 8226 * @param addr 8227 * @param pin 8228 * @return 0 if ok 8229 */ 8230 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8231 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8232 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8233 } 8234 8235 /** 8236 * @brief Accept SSP Numeric Comparison 8237 * @param addr 8238 * @param passkey 8239 * @return 0 if ok 8240 */ 8241 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8242 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8243 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8244 } 8245 8246 /** 8247 * @brief Abort SSP Numeric Comparison/Pairing 8248 * @param addr 8249 * @param pin 8250 * @return 0 if ok 8251 */ 8252 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8253 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8254 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8255 } 8256 8257 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8258 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8259 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8260 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8261 connectionSetAuthenticationFlags(conn, flag); 8262 hci_run(); 8263 return ERROR_CODE_SUCCESS; 8264 } 8265 #endif 8266 8267 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8268 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8269 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8270 } 8271 8272 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8273 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8274 } 8275 #endif 8276 8277 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8278 /** 8279 * @brief Report Remote OOB Data 8280 * @param bd_addr 8281 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8282 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8283 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8284 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8285 */ 8286 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){ 8287 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8288 if (connection == NULL) { 8289 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8290 } 8291 connection->classic_oob_c_192 = c_192; 8292 connection->classic_oob_r_192 = r_192; 8293 8294 // ignore P-256 if not supported by us 8295 if (hci_stack->secure_connections_active){ 8296 connection->classic_oob_c_256 = c_256; 8297 connection->classic_oob_r_256 = r_256; 8298 } 8299 8300 return ERROR_CODE_SUCCESS; 8301 } 8302 /** 8303 * @brief Generate new OOB data 8304 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8305 */ 8306 void gap_ssp_generate_oob_data(void){ 8307 hci_stack->classic_read_local_oob_data = true; 8308 hci_run(); 8309 } 8310 8311 #endif 8312 8313 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8314 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8315 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8316 if (connection == NULL) { 8317 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8318 } 8319 8320 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8321 connection->link_key_type = type; 8322 8323 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8324 } 8325 8326 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8327 /** 8328 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8329 * @param inquiry_mode see bluetooth_defines.h 8330 */ 8331 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8332 hci_stack->inquiry_mode = inquiry_mode; 8333 } 8334 8335 /** 8336 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8337 */ 8338 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8339 hci_stack->sco_voice_setting = voice_setting; 8340 } 8341 8342 /** 8343 * @brief Get SCO Voice Setting 8344 * @return current voice setting 8345 */ 8346 uint16_t hci_get_sco_voice_setting(void){ 8347 return hci_stack->sco_voice_setting; 8348 } 8349 8350 static int hci_have_usb_transport(void){ 8351 if (!hci_stack->hci_transport) return 0; 8352 const char * transport_name = hci_stack->hci_transport->name; 8353 if (!transport_name) return 0; 8354 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8355 } 8356 8357 /** @brief Get SCO packet length for current SCO Voice setting 8358 * @note Using SCO packets of the exact length is required for USB transfer 8359 * @return Length of SCO packets in bytes (not audio frames) 8360 */ 8361 uint16_t hci_get_sco_packet_length(void){ 8362 uint16_t sco_packet_length = 0; 8363 8364 #ifdef ENABLE_SCO_OVER_HCI 8365 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8366 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8367 8368 if (hci_have_usb_transport()){ 8369 // see Core Spec for H2 USB Transfer. 8370 // 3 byte SCO header + 24 bytes per connection 8371 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8372 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8373 } else { 8374 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8375 sco_packet_length = 3 + 60 * multiplier; 8376 // assert that it still fits inside an SCO buffer 8377 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8378 sco_packet_length = 3 + 60; 8379 } 8380 } 8381 #endif 8382 8383 #ifdef HAVE_SCO_TRANSPORT 8384 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8385 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8386 sco_packet_length = 3 + 60 * multiplier; 8387 #endif 8388 return sco_packet_length; 8389 } 8390 8391 /** 8392 * @brief Sets the master/slave policy 8393 * @param policy (0: attempt to become master, 1: let connecting device decide) 8394 */ 8395 void hci_set_master_slave_policy(uint8_t policy){ 8396 hci_stack->master_slave_policy = policy; 8397 } 8398 8399 #endif 8400 8401 HCI_STATE hci_get_state(void){ 8402 return hci_stack->state; 8403 } 8404 8405 #ifdef ENABLE_CLASSIC 8406 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8407 hci_stack->gap_classic_accept_callback = accept_callback; 8408 } 8409 #endif 8410 8411 /** 8412 * @brief Set callback for Bluetooth Hardware Error 8413 */ 8414 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8415 hci_stack->hardware_error_callback = fn; 8416 } 8417 8418 void hci_disconnect_all(void){ 8419 btstack_linked_list_iterator_t it; 8420 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8421 while (btstack_linked_list_iterator_has_next(&it)){ 8422 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8423 if (con->state == SENT_DISCONNECT) continue; 8424 con->state = SEND_DISCONNECT; 8425 } 8426 hci_run(); 8427 } 8428 8429 uint16_t hci_get_manufacturer(void){ 8430 return hci_stack->manufacturer; 8431 } 8432 8433 #ifdef ENABLE_BLE 8434 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8435 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8436 if (!hci_con) return NULL; 8437 return &hci_con->sm_connection; 8438 } 8439 8440 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8441 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8442 #endif 8443 8444 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8445 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8446 if (hci_connection == NULL) return 0; 8447 if (hci_is_le_connection(hci_connection)){ 8448 #ifdef ENABLE_BLE 8449 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8450 if (sm_conn->sm_connection_encrypted) { 8451 return sm_conn->sm_actual_encryption_key_size; 8452 } 8453 #endif 8454 } else { 8455 #ifdef ENABLE_CLASSIC 8456 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8457 return hci_connection->encryption_key_size; 8458 } 8459 #endif 8460 } 8461 return 0; 8462 } 8463 8464 bool gap_authenticated(hci_con_handle_t con_handle){ 8465 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8466 if (hci_connection == NULL) return false; 8467 8468 switch (hci_connection->address_type){ 8469 #ifdef ENABLE_BLE 8470 case BD_ADDR_TYPE_LE_PUBLIC: 8471 case BD_ADDR_TYPE_LE_RANDOM: 8472 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8473 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8474 #endif 8475 #ifdef ENABLE_CLASSIC 8476 case BD_ADDR_TYPE_SCO: 8477 case BD_ADDR_TYPE_ACL: 8478 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8479 #endif 8480 default: 8481 return false; 8482 } 8483 } 8484 8485 bool gap_secure_connection(hci_con_handle_t con_handle){ 8486 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8487 if (hci_connection == NULL) return 0; 8488 8489 switch (hci_connection->address_type){ 8490 #ifdef ENABLE_BLE 8491 case BD_ADDR_TYPE_LE_PUBLIC: 8492 case BD_ADDR_TYPE_LE_RANDOM: 8493 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8494 return hci_connection->sm_connection.sm_connection_sc != 0; 8495 #endif 8496 #ifdef ENABLE_CLASSIC 8497 case BD_ADDR_TYPE_SCO: 8498 case BD_ADDR_TYPE_ACL: 8499 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8500 #endif 8501 default: 8502 return false; 8503 } 8504 } 8505 8506 bool gap_bonded(hci_con_handle_t con_handle){ 8507 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8508 if (hci_connection == NULL) return 0; 8509 8510 #ifdef ENABLE_CLASSIC 8511 link_key_t link_key; 8512 link_key_type_t link_key_type; 8513 #endif 8514 switch (hci_connection->address_type){ 8515 #ifdef ENABLE_BLE 8516 case BD_ADDR_TYPE_LE_PUBLIC: 8517 case BD_ADDR_TYPE_LE_RANDOM: 8518 return hci_connection->sm_connection.sm_le_db_index >= 0; 8519 #endif 8520 #ifdef ENABLE_CLASSIC 8521 case BD_ADDR_TYPE_SCO: 8522 case BD_ADDR_TYPE_ACL: 8523 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8524 #endif 8525 default: 8526 return false; 8527 } 8528 } 8529 8530 #ifdef ENABLE_BLE 8531 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8532 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8533 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8534 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8535 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8536 return sm_conn->sm_connection_authorization_state; 8537 } 8538 #endif 8539 8540 #ifdef ENABLE_CLASSIC 8541 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){ 8542 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8543 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8544 conn->sniff_min_interval = sniff_min_interval; 8545 conn->sniff_max_interval = sniff_max_interval; 8546 conn->sniff_attempt = sniff_attempt; 8547 conn->sniff_timeout = sniff_timeout; 8548 hci_run(); 8549 return 0; 8550 } 8551 8552 /** 8553 * @brief Exit Sniff mode 8554 * @param con_handle 8555 @ @return 0 if ok 8556 */ 8557 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8558 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8559 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8560 conn->sniff_min_interval = 0xffff; 8561 hci_run(); 8562 return 0; 8563 } 8564 8565 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){ 8566 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8567 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8568 conn->sniff_subrating_max_latency = max_latency; 8569 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8570 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8571 hci_run(); 8572 return ERROR_CODE_SUCCESS; 8573 } 8574 8575 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){ 8576 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8577 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8578 conn->qos_service_type = service_type; 8579 conn->qos_token_rate = token_rate; 8580 conn->qos_peak_bandwidth = peak_bandwidth; 8581 conn->qos_latency = latency; 8582 conn->qos_delay_variation = delay_variation; 8583 hci_run(); 8584 return ERROR_CODE_SUCCESS; 8585 } 8586 8587 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8588 hci_stack->new_page_scan_interval = page_scan_interval; 8589 hci_stack->new_page_scan_window = page_scan_window; 8590 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8591 hci_run(); 8592 } 8593 8594 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8595 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8596 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8597 hci_run(); 8598 } 8599 8600 void gap_set_page_timeout(uint16_t page_timeout){ 8601 hci_stack->page_timeout = page_timeout; 8602 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8603 hci_run(); 8604 } 8605 8606 #endif 8607 8608 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8609 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8610 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8611 if (le_device_db_index >= le_device_db_max_count()) return; 8612 uint8_t offset = le_device_db_index >> 3; 8613 uint8_t mask = 1 << (le_device_db_index & 7); 8614 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8615 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8616 // note: go back to remove entries, otherwise, a remove + add will skip the add 8617 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8618 } 8619 } 8620 8621 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8622 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8623 if (le_device_db_index >= le_device_db_max_count()) return; 8624 uint8_t offset = le_device_db_index >> 3; 8625 uint8_t mask = 1 << (le_device_db_index & 7); 8626 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8627 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8628 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8629 } 8630 } 8631 8632 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8633 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8634 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8635 } 8636 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8637 // restart le resolving list update 8638 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8639 } 8640 return ERROR_CODE_SUCCESS; 8641 } 8642 #endif 8643 8644 #ifdef ENABLE_BLE 8645 #ifdef ENABLE_LE_CENTRAL 8646 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8647 8648 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8649 // check if already in list 8650 btstack_linked_list_iterator_t it; 8651 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8652 while (btstack_linked_list_iterator_has_next(&it)) { 8653 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8654 if (entry->sid != advertising_sid) { 8655 continue; 8656 } 8657 if (entry->address_type != address_type) { 8658 continue; 8659 } 8660 if (memcmp(entry->address, address, 6) != 0) { 8661 continue; 8662 } 8663 // disallow if already scheduled to add 8664 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8665 return ERROR_CODE_COMMAND_DISALLOWED; 8666 } 8667 // still on controller, but scheduled to remove -> re-add 8668 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8669 return ERROR_CODE_SUCCESS; 8670 } 8671 // alloc and add to list 8672 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8673 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8674 entry->sid = advertising_sid; 8675 entry->address_type = address_type; 8676 (void)memcpy(entry->address, address, 6); 8677 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8678 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8679 return ERROR_CODE_SUCCESS; 8680 } 8681 8682 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8683 btstack_linked_list_iterator_t it; 8684 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8685 while (btstack_linked_list_iterator_has_next(&it)){ 8686 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8687 if (entry->sid != advertising_sid) { 8688 continue; 8689 } 8690 if (entry->address_type != address_type) { 8691 continue; 8692 } 8693 if (memcmp(entry->address, address, 6) != 0) { 8694 continue; 8695 } 8696 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8697 // remove from controller if already present 8698 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8699 } else { 8700 // directly remove entry from whitelist 8701 btstack_linked_list_iterator_remove(&it); 8702 btstack_memory_periodic_advertiser_list_entry_free(entry); 8703 } 8704 return ERROR_CODE_SUCCESS; 8705 } 8706 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8707 } 8708 8709 static void hci_periodic_advertiser_list_clear(void){ 8710 btstack_linked_list_iterator_t it; 8711 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8712 while (btstack_linked_list_iterator_has_next(&it)){ 8713 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8714 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8715 // remove from controller if already present 8716 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8717 continue; 8718 } 8719 // directly remove entry from whitelist 8720 btstack_linked_list_iterator_remove(&it); 8721 btstack_memory_periodic_advertiser_list_entry_free(entry); 8722 } 8723 } 8724 8725 // free all entries unconditionally 8726 static void hci_periodic_advertiser_list_free(void){ 8727 btstack_linked_list_iterator_t lit; 8728 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8729 while (btstack_linked_list_iterator_has_next(&lit)){ 8730 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8731 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8732 btstack_memory_periodic_advertiser_list_entry_free(entry); 8733 } 8734 } 8735 8736 uint8_t gap_periodic_advertiser_list_clear(void){ 8737 hci_periodic_advertiser_list_clear(); 8738 hci_run(); 8739 return ERROR_CODE_SUCCESS; 8740 } 8741 8742 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8743 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8744 if (status){ 8745 return status; 8746 } 8747 hci_run(); 8748 return ERROR_CODE_SUCCESS; 8749 } 8750 8751 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8752 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8753 if (status){ 8754 return status; 8755 } 8756 hci_run(); 8757 return ERROR_CODE_SUCCESS; 8758 } 8759 8760 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8761 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8762 // abort if already active 8763 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8764 return ERROR_CODE_COMMAND_DISALLOWED; 8765 } 8766 // store request 8767 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8768 hci_stack->le_periodic_sync_options = options; 8769 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8770 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8771 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8772 hci_stack->le_periodic_sync_skip = skip; 8773 hci_stack->le_periodic_sync_timeout = sync_timeout; 8774 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8775 8776 hci_run(); 8777 return ERROR_CODE_SUCCESS; 8778 } 8779 8780 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8781 // abort if not requested 8782 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8783 return ERROR_CODE_COMMAND_DISALLOWED; 8784 } 8785 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8786 hci_run(); 8787 return ERROR_CODE_SUCCESS; 8788 } 8789 8790 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8791 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8792 return ERROR_CODE_COMMAND_DISALLOWED; 8793 } 8794 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8795 hci_run(); 8796 return ERROR_CODE_SUCCESS; 8797 } 8798 8799 #endif 8800 #endif 8801 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 8802 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle) { 8803 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 8804 if (iso_stream == NULL){ 8805 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8806 } else { 8807 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 8808 iso_stream->con_handle = con_handle; 8809 iso_stream->big_handle = big_handle; 8810 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8811 return ERROR_CODE_SUCCESS; 8812 } 8813 } 8814 8815 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 8816 btstack_linked_list_iterator_t it; 8817 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8818 while (btstack_linked_list_iterator_has_next(&it)){ 8819 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8820 if (iso_stream->con_handle == con_handle ) { 8821 return iso_stream; 8822 } 8823 } 8824 return NULL; 8825 } 8826 8827 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 8828 log_info("hci_iso_stream_finalize con_handle 0x%04x, big_handle 0x%02x", iso_stream->con_handle, iso_stream->big_handle); 8829 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8830 btstack_memory_hci_iso_stream_free(iso_stream); 8831 } 8832 8833 static void hci_iso_stream_requested_finalize(uint8_t big_handle) { 8834 btstack_linked_list_iterator_t it; 8835 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8836 while (btstack_linked_list_iterator_has_next(&it)){ 8837 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8838 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 8839 (iso_stream->big_handle == big_handle)){ 8840 btstack_linked_list_iterator_remove(&it); 8841 btstack_memory_hci_iso_stream_free(iso_stream); 8842 } 8843 } 8844 } 8845 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 8846 btstack_linked_list_iterator_t it; 8847 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8848 while (btstack_linked_list_iterator_has_next(&it)){ 8849 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8850 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8851 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 8852 } 8853 } 8854 } 8855 8856 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 8857 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 8858 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 8859 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 8860 return (sdu_len_offset + 2 + sdu_len) == size; 8861 } 8862 8863 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 8864 if (hci_stack->iso_packet_handler == NULL) { 8865 return; 8866 } 8867 if (size < 4) { 8868 return; 8869 } 8870 8871 // parse header 8872 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 8873 uint16_t iso_data_len = little_endian_read_16(packet, 2); 8874 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 8875 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 8876 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 8877 8878 // assert packet is complete 8879 if ((iso_data_len + 4u) != size){ 8880 return; 8881 } 8882 8883 if ((pb_flag & 0x01) == 0){ 8884 if (pb_flag == 0x02){ 8885 // The ISO_Data_Load field contains a header and a complete SDU. 8886 if (hci_iso_sdu_complete(packet, size)) { 8887 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 8888 } 8889 } else { 8890 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 8891 if (iso_stream == NULL){ 8892 return; 8893 } 8894 if (size > HCI_ISO_PAYLOAD_SIZE){ 8895 return; 8896 } 8897 memcpy(iso_stream->reassembly_buffer, packet, size); 8898 // fix pb_flag 8899 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 8900 iso_stream->reassembly_pos = size; 8901 } 8902 } else { 8903 // iso_data_load contains continuation or last fragment of an SDU 8904 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 8905 if (ts_flag != 0){ 8906 return; 8907 } 8908 // append fragment 8909 if (iso_stream == NULL){ 8910 return; 8911 } 8912 if (iso_stream->reassembly_pos == 0){ 8913 return; 8914 } 8915 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 8916 // reset reassembly buffer 8917 iso_stream->reassembly_pos = 0; 8918 return; 8919 } 8920 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 8921 iso_stream->reassembly_pos += iso_data_len; 8922 8923 // deliver if last fragment and SDU complete 8924 if (pb_flag == 0x03){ 8925 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 8926 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 8927 } 8928 iso_stream->reassembly_pos = 0; 8929 } 8930 } 8931 } 8932 8933 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 8934 uint8_t event [6 + (MAX_NR_BIS * 2)]; 8935 uint16_t pos = 0; 8936 event[pos++] = HCI_EVENT_META_GAP; 8937 event[pos++] = 4 + (2 * big->num_bis); 8938 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 8939 event[pos++] = status; 8940 event[pos++] = big->big_handle; 8941 event[pos++] = big->num_bis; 8942 uint8_t i; 8943 for (i=0;i<big->num_bis;i++){ 8944 little_endian_store_16(event, pos, big->bis_con_handles[i]); 8945 pos += 2; 8946 } 8947 hci_emit_event(event, pos, 0); 8948 } 8949 8950 static void hci_emit_big_terminated(const le_audio_big_t * big){ 8951 uint8_t event [4]; 8952 uint16_t pos = 0; 8953 event[pos++] = HCI_EVENT_META_GAP; 8954 event[pos++] = 2; 8955 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 8956 event[pos++] = big->big_handle; 8957 hci_emit_event(event, pos, 0); 8958 } 8959 8960 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 8961 uint8_t event [6 + (MAX_NR_BIS * 2)]; 8962 uint16_t pos = 0; 8963 event[pos++] = HCI_EVENT_META_GAP; 8964 event[pos++] = 4; 8965 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 8966 event[pos++] = status; 8967 event[pos++] = big_sync->big_handle; 8968 event[pos++] = big_sync->num_bis; 8969 uint8_t i; 8970 for (i=0;i<big_sync->num_bis;i++){ 8971 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 8972 pos += 2; 8973 } 8974 hci_emit_event(event, pos, 0); 8975 } 8976 8977 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync){ 8978 uint8_t event [4]; 8979 uint16_t pos = 0; 8980 event[pos++] = HCI_EVENT_META_GAP; 8981 event[pos++] = 2; 8982 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 8983 event[pos++] = big_sync->big_handle; 8984 hci_emit_event(event, pos, 0); 8985 } 8986 8987 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 8988 btstack_linked_list_iterator_t it; 8989 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 8990 while (btstack_linked_list_iterator_has_next(&it)){ 8991 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 8992 if ( big->big_handle == big_handle ) { 8993 return big; 8994 } 8995 } 8996 return NULL; 8997 } 8998 8999 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9000 btstack_linked_list_iterator_t it; 9001 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9002 while (btstack_linked_list_iterator_has_next(&it)){ 9003 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9004 if ( big_sync->big_handle == big_handle ) { 9005 return big_sync; 9006 } 9007 } 9008 return NULL; 9009 } 9010 9011 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9012 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9013 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9014 } 9015 if (big_params->num_bis == 0){ 9016 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9017 } 9018 if (big_params->num_bis > MAX_NR_BIS){ 9019 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9020 } 9021 9022 // reserve ISO Streams 9023 uint8_t i; 9024 uint8_t status = ERROR_CODE_SUCCESS; 9025 for (i=0;i<big_params->num_bis;i++){ 9026 status = hci_iso_stream_create(HCI_CON_HANDLE_INVALID, big_params->big_handle); 9027 if (status != ERROR_CODE_SUCCESS) { 9028 break; 9029 } 9030 } 9031 9032 // free structs on error 9033 if (status != ERROR_CODE_SUCCESS){ 9034 hci_iso_stream_requested_finalize(big_params->big_handle); 9035 return status; 9036 } 9037 9038 le_audio_big_t * big = storage; 9039 big->big_handle = big_params->big_handle; 9040 big->params = big_params; 9041 big->state = LE_AUDIO_BIG_STATE_CREATE; 9042 big->num_bis = big_params->num_bis; 9043 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9044 9045 hci_run(); 9046 9047 return ERROR_CODE_SUCCESS; 9048 } 9049 9050 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9051 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9052 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9053 } 9054 if (big_sync_params->num_bis == 0){ 9055 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9056 } 9057 if (big_sync_params->num_bis > MAX_NR_BIS){ 9058 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9059 } 9060 9061 le_audio_big_sync_t * big_sync = storage; 9062 big_sync->big_handle = big_sync_params->big_handle; 9063 big_sync->params = big_sync_params; 9064 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9065 big_sync->num_bis = big_sync_params->num_bis; 9066 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9067 9068 hci_run(); 9069 9070 return ERROR_CODE_SUCCESS; 9071 } 9072 9073 uint8_t gap_big_terminate(uint8_t big_handle){ 9074 le_audio_big_t * big = hci_big_for_handle(big_handle); 9075 if (big == NULL){ 9076 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9077 } 9078 switch (big->state){ 9079 case LE_AUDIO_BIG_STATE_CREATE: 9080 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9081 hci_emit_big_terminated(big); 9082 break; 9083 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9084 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9085 break; 9086 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9087 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9088 case LE_AUDIO_BIG_STATE_ACTIVE: 9089 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9090 hci_run(); 9091 break; 9092 default: 9093 return ERROR_CODE_COMMAND_DISALLOWED; 9094 } 9095 return ERROR_CODE_SUCCESS; 9096 } 9097 9098 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9099 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9100 if (big_sync == NULL){ 9101 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9102 } 9103 switch (big_sync->state){ 9104 case LE_AUDIO_BIG_STATE_CREATE: 9105 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9106 hci_emit_big_sync_stopped(big_sync); 9107 break; 9108 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9109 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9110 break; 9111 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9112 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9113 case LE_AUDIO_BIG_STATE_ACTIVE: 9114 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9115 hci_run(); 9116 break; 9117 default: 9118 return ERROR_CODE_COMMAND_DISALLOWED; 9119 } 9120 return ERROR_CODE_SUCCESS; 9121 } 9122 9123 #endif 9124 #endif /* ENABLE_BLE */ 9125 9126 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9127 void hci_setup_test_connections_fuzz(void){ 9128 hci_connection_t * conn; 9129 9130 // default address: 66:55:44:33:00:01 9131 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9132 9133 // setup Controller info 9134 hci_stack->num_cmd_packets = 255; 9135 hci_stack->acl_packets_total_num = 255; 9136 9137 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9138 addr[5] = 0x01; 9139 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9140 conn->con_handle = addr[5]; 9141 conn->role = HCI_ROLE_SLAVE; 9142 conn->state = RECEIVED_CONNECTION_REQUEST; 9143 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9144 9145 // setup incoming Classic SCO connection with con handle 0x0002 9146 addr[5] = 0x02; 9147 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9148 conn->con_handle = addr[5]; 9149 conn->role = HCI_ROLE_SLAVE; 9150 conn->state = RECEIVED_CONNECTION_REQUEST; 9151 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9152 9153 // setup ready Classic ACL connection with con handle 0x0003 9154 addr[5] = 0x03; 9155 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9156 conn->con_handle = addr[5]; 9157 conn->role = HCI_ROLE_SLAVE; 9158 conn->state = OPEN; 9159 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9160 9161 // setup ready Classic SCO connection with con handle 0x0004 9162 addr[5] = 0x04; 9163 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9164 conn->con_handle = addr[5]; 9165 conn->role = HCI_ROLE_SLAVE; 9166 conn->state = OPEN; 9167 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9168 9169 // setup ready LE ACL connection with con handle 0x005 and public address 9170 addr[5] = 0x05; 9171 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9172 conn->con_handle = addr[5]; 9173 conn->role = HCI_ROLE_SLAVE; 9174 conn->state = OPEN; 9175 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9176 conn->sm_connection.sm_connection_encrypted = 1; 9177 } 9178 9179 void hci_free_connections_fuzz(void){ 9180 btstack_linked_list_iterator_t it; 9181 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9182 while (btstack_linked_list_iterator_has_next(&it)){ 9183 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9184 btstack_linked_list_iterator_remove(&it); 9185 btstack_memory_hci_connection_free(con); 9186 } 9187 } 9188 void hci_simulate_working_fuzz(void){ 9189 hci_stack->le_scanning_param_update = false; 9190 hci_init_done(); 9191 hci_stack->num_cmd_packets = 255; 9192 } 9193 #endif 9194