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_CONTROLLER_DUMP_PACKETS 78 #include <stdio.h> // sprintf 79 #endif 80 81 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 82 #ifndef HCI_HOST_ACL_PACKET_NUM 83 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_NUM" 84 #endif 85 #ifndef HCI_HOST_ACL_PACKET_LEN 86 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_ACL_PACKET_LEN" 87 #endif 88 #ifndef HCI_HOST_SCO_PACKET_NUM 89 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_NUM" 90 #endif 91 #ifndef HCI_HOST_SCO_PACKET_LEN 92 #error "ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL requires to define HCI_HOST_SCO_PACKET_LEN" 93 #endif 94 #endif 95 96 #if defined(ENABLE_SCO_OVER_HCI) && defined(ENABLE_SCO_OVER_PCM) 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 ENABLE_SCO_OVER_PCM." 98 #endif 99 100 #if defined(ENABLE_SCO_OVER_HCI) && defined(HAVE_SCO_TRANSPORT) 101 #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." 102 #endif 103 104 #define HCI_CONNECTION_TIMEOUT_MS 10000 105 106 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 107 #define HCI_RESET_RESEND_TIMEOUT_MS 200 108 #endif 109 110 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 111 #ifndef GAP_INQUIRY_MAX_NAME_LEN 112 #define GAP_INQUIRY_MAX_NAME_LEN 32 113 #endif 114 115 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 116 #define GAP_INQUIRY_DURATION_MIN 0x01 117 #define GAP_INQUIRY_DURATION_MAX 0x30 118 #define GAP_INQUIRY_MIN_PERIODIC_LEN_MIN 0x02 119 #define GAP_INQUIRY_MAX_PERIODIC_LEN_MIN 0x03 120 #define GAP_INQUIRY_STATE_IDLE 0x00 121 #define GAP_INQUIRY_STATE_W4_ACTIVE 0x80 122 #define GAP_INQUIRY_STATE_ACTIVE 0x81 123 #define GAP_INQUIRY_STATE_W2_CANCEL 0x82 124 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x83 125 #define GAP_INQUIRY_STATE_PERIODIC 0x84 126 #define GAP_INQUIRY_STATE_W2_EXIT_PERIODIC 0x85 127 128 // GAP Remote Name Request 129 #define GAP_REMOTE_NAME_STATE_IDLE 0 130 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 131 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 132 133 // GAP Pairing 134 #define GAP_PAIRING_STATE_IDLE 0 135 #define GAP_PAIRING_STATE_SEND_PIN 1 136 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 137 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 138 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 139 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 140 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 141 #define GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE 7 142 143 // 144 // compact storage of relevant supported HCI Commands. 145 // X-Macro below provides enumeration and mapping table into the supported 146 // commands bitmap (64 bytes) from HCI Read Local Supported Commands 147 // 148 149 // format: command name, byte offset, bit nr in 64-byte supported commands 150 // currently stored in 32-bit variable 151 #define SUPPORTED_HCI_COMMANDS \ 152 X( SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES , 2, 5) \ 153 X( SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE , 10, 4) \ 154 X( SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE , 14, 7) \ 155 X( SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING, 18, 3) \ 156 X( SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE , 20, 4) \ 157 X( SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2 , 22, 2) \ 158 X( SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED , 24, 6) \ 159 X( SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY, 32, 1) \ 160 X( SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST , 32, 3) \ 161 X( SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND , 32, 6) \ 162 X( SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH, 34, 0) \ 163 X( SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE , 35, 1) \ 164 X( SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH , 35, 3) \ 165 X( SUPPORTED_HCI_COMMAND_LE_SET_DEFAULT_PHY , 35, 5) \ 166 X( SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE , 36, 6) \ 167 X( SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2 , 41, 5) \ 168 X( SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE , 45, 7) \ 169 170 // enumerate supported commands 171 #define X(name, offset, bit) name, 172 enum { 173 SUPPORTED_HCI_COMMANDS 174 SUPPORTED_HCI_COMMANDS_COUNT 175 }; 176 #undef X 177 178 // prototypes 179 #ifdef ENABLE_CLASSIC 180 static void hci_update_scan_enable(void); 181 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable); 182 static int hci_local_ssp_activated(void); 183 static bool hci_remote_ssp_supported(hci_con_handle_t con_handle); 184 static bool hci_ssp_supported(hci_connection_t * connection); 185 static void hci_notify_if_sco_can_send_now(void); 186 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 187 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 188 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 189 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 190 static void hci_connection_timestamp(hci_connection_t *connection); 191 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 192 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 193 #endif 194 195 static int hci_power_control_on(void); 196 static void hci_power_control_off(void); 197 static void hci_state_reset(void); 198 static void hci_halting_timeout_handler(btstack_timer_source_t * ds); 199 static void hci_emit_transport_packet_sent(void); 200 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 201 static void hci_emit_nr_connections_changed(void); 202 static void hci_emit_hci_open_failed(void); 203 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 204 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 205 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 206 static void hci_run(void); 207 static int hci_is_le_connection(hci_connection_t * connection); 208 209 #ifdef ENABLE_CLASSIC 210 static int hci_have_usb_transport(void); 211 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection); 212 #endif 213 214 #ifdef ENABLE_BLE 215 static void hci_whitelist_free(void); 216 #ifdef ENABLE_LE_CENTRAL 217 // called from test/ble_client/advertising_data_parser.c 218 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 219 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 220 static hci_connection_t * gap_get_outgoing_connection(void); 221 static void hci_le_scan_stop(void); 222 static bool hci_run_general_gap_le(void); 223 #endif 224 #ifdef ENABLE_LE_PERIPHERAL 225 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 226 static void hci_periodic_advertiser_list_free(void); 227 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle); 228 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 229 #endif /* ENABLE_LE_PERIPHERAL */ 230 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 231 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle); 232 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream); 233 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle); 234 static void hci_iso_stream_requested_finalize(uint8_t big_handle); 235 static void hci_iso_stream_requested_confirm(uint8_t big_handle); 236 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size); 237 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle); 238 static void hci_iso_notify_can_send_now(void); 239 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status); 240 static void hci_emit_big_terminated(const le_audio_big_t * big); 241 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status); 242 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync); 243 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle); 244 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 245 #endif /* ENABLE_BLE */ 246 247 // the STACK is here 248 #ifndef HAVE_MALLOC 249 static hci_stack_t hci_stack_static; 250 #endif 251 static hci_stack_t * hci_stack = NULL; 252 253 #ifdef ENABLE_CLASSIC 254 // default name 255 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 256 257 // test helper 258 static uint8_t disable_l2cap_timeouts = 0; 259 #endif 260 261 // reset connection state on create and on reconnect 262 // don't overwrite addr, con handle, role 263 static void hci_connection_init(hci_connection_t * conn){ 264 conn->authentication_flags = AUTH_FLAG_NONE; 265 conn->bonding_flags = 0; 266 conn->requested_security_level = LEVEL_0; 267 #ifdef ENABLE_CLASSIC 268 conn->request_role = HCI_ROLE_INVALID; 269 conn->sniff_subrating_max_latency = 0xffff; 270 conn->qos_service_type = HCI_SERVICE_TYPE_INVALID; 271 conn->link_key_type = INVALID_LINK_KEY; 272 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 273 btstack_run_loop_set_timer_context(&conn->timeout, conn); 274 hci_connection_timestamp(conn); 275 #endif 276 conn->acl_recombination_length = 0; 277 conn->acl_recombination_pos = 0; 278 conn->num_packets_sent = 0; 279 280 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 281 #ifdef ENABLE_BLE 282 conn->le_phy_update_all_phys = 0xff; 283 #endif 284 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 285 conn->le_max_tx_octets = 27; 286 #endif 287 #ifdef ENABLE_CLASSIC_PAIRING_OOB 288 conn->classic_oob_c_192 = NULL; 289 conn->classic_oob_r_192 = NULL; 290 conn->classic_oob_c_256 = NULL; 291 conn->classic_oob_r_256 = NULL; 292 #endif 293 } 294 295 /** 296 * create connection for given address 297 * 298 * @return connection OR NULL, if no memory left 299 */ 300 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 301 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 302 303 hci_connection_t * conn = btstack_memory_hci_connection_get(); 304 if (!conn) return NULL; 305 hci_connection_init(conn); 306 307 bd_addr_copy(conn->address, addr); 308 conn->address_type = addr_type; 309 conn->con_handle = HCI_CON_HANDLE_INVALID; 310 conn->role = HCI_ROLE_INVALID; 311 312 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 313 314 return conn; 315 } 316 317 318 /** 319 * get le connection parameter range 320 * 321 * @return le connection parameter range struct 322 */ 323 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 324 *range = hci_stack->le_connection_parameter_range; 325 } 326 327 /** 328 * set le connection parameter range 329 * 330 */ 331 332 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 333 hci_stack->le_connection_parameter_range = *range; 334 } 335 336 /** 337 * @brief Test if connection parameters are inside in existing rage 338 * @param conn_interval_min (unit: 1.25ms) 339 * @param conn_interval_max (unit: 1.25ms) 340 * @param conn_latency 341 * @param supervision_timeout (unit: 10ms) 342 * @return 1 if included 343 */ 344 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){ 345 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 346 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 347 348 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 349 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 350 351 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 352 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 353 354 return 1; 355 } 356 357 /** 358 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 359 * @note: default: 1 360 * @param max_peripheral_connections 361 */ 362 #ifdef ENABLE_LE_PERIPHERAL 363 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 364 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 365 } 366 #endif 367 368 /** 369 * get hci connections iterator 370 * 371 * @return hci connections iterator 372 */ 373 374 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 375 btstack_linked_list_iterator_init(it, &hci_stack->connections); 376 } 377 378 /** 379 * get connection for a given handle 380 * 381 * @return connection OR NULL, if not found 382 */ 383 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 384 btstack_linked_list_iterator_t it; 385 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 386 while (btstack_linked_list_iterator_has_next(&it)){ 387 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 388 if ( item->con_handle == con_handle ) { 389 return item; 390 } 391 } 392 return NULL; 393 } 394 395 /** 396 * get connection for given address 397 * 398 * @return connection OR NULL, if not found 399 */ 400 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 401 btstack_linked_list_iterator_t it; 402 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 403 while (btstack_linked_list_iterator_has_next(&it)){ 404 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 405 if (connection->address_type != addr_type) continue; 406 if (memcmp(addr, connection->address, 6) != 0) continue; 407 return connection; 408 } 409 return NULL; 410 } 411 412 #ifdef ENABLE_CLASSIC 413 414 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 415 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 416 } 417 418 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 419 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 420 } 421 422 #ifdef ENABLE_SCO_OVER_HCI 423 static int hci_number_sco_connections(void){ 424 int connections = 0; 425 btstack_linked_list_iterator_t it; 426 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 427 while (btstack_linked_list_iterator_has_next(&it)){ 428 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 429 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 430 connections++; 431 } 432 return connections; 433 } 434 #endif 435 436 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 437 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 438 #ifdef HAVE_EMBEDDED_TICK 439 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 440 // connections might be timed out 441 hci_emit_l2cap_check_timeout(connection); 442 } 443 #else 444 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 445 // connections might be timed out 446 hci_emit_l2cap_check_timeout(connection); 447 } 448 #endif 449 } 450 451 static void hci_connection_timestamp(hci_connection_t *connection){ 452 #ifdef HAVE_EMBEDDED_TICK 453 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 454 #else 455 connection->timestamp = btstack_run_loop_get_time_ms(); 456 #endif 457 } 458 459 /** 460 * add authentication flags and reset timer 461 * @note: assumes classic connection 462 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 463 */ 464 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 465 bd_addr_t addr; 466 reverse_bd_addr(bd_addr, addr); 467 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 468 if (conn) { 469 connectionSetAuthenticationFlags(conn, flags); 470 hci_connection_timestamp(conn); 471 } 472 } 473 474 static bool hci_pairing_active(hci_connection_t * hci_connection){ 475 return (hci_connection->authentication_flags & AUTH_FLAG_PAIRING_ACTIVE_MASK) != 0; 476 } 477 478 static void hci_pairing_started(hci_connection_t * hci_connection, bool ssp){ 479 if (hci_pairing_active(hci_connection)) return; 480 if (ssp){ 481 hci_connection->authentication_flags |= AUTH_FLAG_SSP_PAIRING_ACTIVE; 482 } else { 483 hci_connection->authentication_flags |= AUTH_FLAG_LEGACY_PAIRING_ACTIVE; 484 } 485 // if we are initiator, we have sent an HCI Authenticate Request 486 bool initiator = (hci_connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0; 487 488 // if we are responder, use minimal service security level as required level 489 if (!initiator){ 490 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); 491 } 492 493 log_info("pairing started, ssp %u, initiator %u, requested level %u", (int) ssp, (int) initiator, hci_connection->requested_security_level); 494 495 uint8_t event[12]; 496 event[0] = GAP_EVENT_PAIRING_STARTED; 497 event[1] = 10; 498 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 499 reverse_bd_addr(hci_connection->address, &event[4]); 500 event[10] = (uint8_t) ssp; 501 event[11] = (uint8_t) initiator; 502 hci_emit_event(event, sizeof(event), 1); 503 } 504 505 static void hci_pairing_complete(hci_connection_t * hci_connection, uint8_t status){ 506 hci_connection->requested_security_level = LEVEL_0; 507 if (!hci_pairing_active(hci_connection)) return; 508 hci_connection->authentication_flags &= ~AUTH_FLAG_PAIRING_ACTIVE_MASK; 509 #ifdef ENABLE_CLASSIC_PAIRING_OOB 510 hci_connection->classic_oob_c_192 = NULL; 511 hci_connection->classic_oob_r_192 = NULL; 512 hci_connection->classic_oob_c_256 = NULL; 513 hci_connection->classic_oob_r_256 = NULL; 514 #endif 515 log_info("pairing complete, status %02x", status); 516 517 uint8_t event[11]; 518 event[0] = GAP_EVENT_PAIRING_COMPLETE; 519 event[1] = 9; 520 little_endian_store_16(event, 2, (uint16_t) hci_connection->con_handle); 521 reverse_bd_addr(hci_connection->address, &event[4]); 522 event[10] = status; 523 hci_emit_event(event, sizeof(event), 1); 524 525 // emit dedicated bonding done on failure, otherwise verify that connection can be encrypted 526 if ((status != ERROR_CODE_SUCCESS) && ((hci_connection->bonding_flags & BONDING_DEDICATED) != 0)){ 527 hci_connection->bonding_flags &= ~BONDING_DEDICATED; 528 hci_connection->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 529 hci_connection->bonding_status = status; 530 } 531 } 532 533 bool hci_authentication_active_for_handle(hci_con_handle_t handle){ 534 hci_connection_t * conn = hci_connection_for_handle(handle); 535 if (!conn) return false; 536 return hci_pairing_active(conn); 537 } 538 539 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 540 if (!hci_stack->link_key_db) return; 541 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 542 hci_stack->link_key_db->delete_link_key(addr); 543 } 544 545 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 546 if (!hci_stack->link_key_db) return; 547 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 548 hci_stack->link_key_db->put_link_key(addr, link_key, type); 549 } 550 551 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 552 if (!hci_stack->link_key_db) return false; 553 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 554 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 555 return result; 556 } 557 558 void gap_delete_all_link_keys(void){ 559 bd_addr_t addr; 560 link_key_t link_key; 561 link_key_type_t type; 562 btstack_link_key_iterator_t it; 563 int ok = gap_link_key_iterator_init(&it); 564 if (!ok) { 565 log_error("could not initialize iterator"); 566 return; 567 } 568 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 569 gap_drop_link_key_for_bd_addr(addr); 570 } 571 gap_link_key_iterator_done(&it); 572 } 573 574 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 575 if (!hci_stack->link_key_db) return 0; 576 if (!hci_stack->link_key_db->iterator_init) return 0; 577 return hci_stack->link_key_db->iterator_init(it); 578 } 579 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){ 580 if (!hci_stack->link_key_db) return 0; 581 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 582 } 583 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 584 if (!hci_stack->link_key_db) return; 585 hci_stack->link_key_db->iterator_done(it); 586 } 587 #endif 588 589 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 590 switch (address_type){ 591 case BD_ADDR_TYPE_LE_PUBLIC: 592 case BD_ADDR_TYPE_LE_RANDOM: 593 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 594 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 595 return true; 596 default: 597 return false; 598 } 599 } 600 601 static int hci_is_le_connection(hci_connection_t * connection){ 602 return hci_is_le_connection_type(connection->address_type); 603 } 604 605 /** 606 * count connections 607 */ 608 static int nr_hci_connections(void){ 609 int count = 0; 610 btstack_linked_item_t *it; 611 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 612 count++; 613 } 614 return count; 615 } 616 617 uint16_t hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 618 619 unsigned int num_packets_sent_classic = 0; 620 unsigned int num_packets_sent_le = 0; 621 622 btstack_linked_item_t *it; 623 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 624 hci_connection_t * connection = (hci_connection_t *) it; 625 if (hci_is_le_connection(connection)){ 626 num_packets_sent_le += connection->num_packets_sent; 627 } 628 if (connection->address_type == BD_ADDR_TYPE_ACL){ 629 num_packets_sent_classic += connection->num_packets_sent; 630 } 631 } 632 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 633 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 634 int free_slots_le = 0; 635 636 if (free_slots_classic < 0){ 637 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); 638 return 0; 639 } 640 641 if (hci_stack->le_acl_packets_total_num){ 642 // if we have LE slots, they are used 643 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 644 if (free_slots_le < 0){ 645 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); 646 return 0; 647 } 648 } else { 649 // otherwise, classic slots are used for LE, too 650 free_slots_classic -= num_packets_sent_le; 651 if (free_slots_classic < 0){ 652 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); 653 return 0; 654 } 655 } 656 657 switch (address_type){ 658 case BD_ADDR_TYPE_UNKNOWN: 659 log_error("hci_number_free_acl_slots: unknown address type"); 660 return 0; 661 662 case BD_ADDR_TYPE_ACL: 663 return (uint16_t) free_slots_classic; 664 665 default: 666 if (hci_stack->le_acl_packets_total_num > 0){ 667 return (uint16_t) free_slots_le; 668 } 669 return (uint16_t) free_slots_classic; 670 } 671 } 672 673 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 674 // get connection type 675 hci_connection_t * connection = hci_connection_for_handle(con_handle); 676 if (!connection){ 677 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 678 return 0; 679 } 680 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 681 } 682 683 #ifdef ENABLE_CLASSIC 684 static int hci_number_free_sco_slots(void){ 685 unsigned int num_sco_packets_sent = 0; 686 btstack_linked_item_t *it; 687 if (hci_stack->synchronous_flow_control_enabled){ 688 // explicit flow control 689 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 690 hci_connection_t * connection = (hci_connection_t *) it; 691 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 692 num_sco_packets_sent += connection->num_packets_sent; 693 } 694 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 695 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 696 return 0; 697 } 698 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 699 } else { 700 // implicit flow control -- TODO 701 int num_ready = 0; 702 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 703 hci_connection_t * connection = (hci_connection_t *) it; 704 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 705 if (connection->sco_tx_ready == 0) continue; 706 num_ready++; 707 } 708 return num_ready; 709 } 710 } 711 #endif 712 713 // only used to send HCI Host Number Completed Packets 714 static int hci_can_send_comand_packet_transport(void){ 715 if (hci_stack->hci_packet_buffer_reserved) return 0; 716 717 // check for async hci transport implementations 718 if (hci_stack->hci_transport->can_send_packet_now){ 719 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 720 return 0; 721 } 722 } 723 return 1; 724 } 725 726 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 727 bool hci_can_send_command_packet_now(void){ 728 if (hci_can_send_comand_packet_transport() == 0) return false; 729 return hci_stack->num_cmd_packets > 0u; 730 } 731 732 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 733 // check for async hci transport implementations 734 if (!hci_stack->hci_transport->can_send_packet_now) return true; 735 return hci_stack->hci_transport->can_send_packet_now(packet_type); 736 } 737 738 static bool hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 739 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 740 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 741 } 742 743 bool hci_can_send_acl_le_packet_now(void){ 744 if (hci_stack->hci_packet_buffer_reserved) return false; 745 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 746 } 747 748 bool hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 749 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return false; 750 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 751 } 752 753 bool hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 754 if (hci_stack->hci_packet_buffer_reserved) return false; 755 return hci_can_send_prepared_acl_packet_now(con_handle); 756 } 757 758 #ifdef ENABLE_CLASSIC 759 bool hci_can_send_acl_classic_packet_now(void){ 760 if (hci_stack->hci_packet_buffer_reserved) return false; 761 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 762 } 763 764 bool hci_can_send_prepared_sco_packet_now(void){ 765 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return false; 766 if (hci_have_usb_transport()){ 767 return hci_stack->sco_can_send_now; 768 } else { 769 return hci_number_free_sco_slots() > 0; 770 } 771 } 772 773 bool hci_can_send_sco_packet_now(void){ 774 if (hci_stack->hci_packet_buffer_reserved) return false; 775 return hci_can_send_prepared_sco_packet_now(); 776 } 777 778 void hci_request_sco_can_send_now_event(void){ 779 hci_stack->sco_waiting_for_can_send_now = 1; 780 hci_notify_if_sco_can_send_now(); 781 } 782 #endif 783 784 // used for internal checks in l2cap.c 785 bool hci_is_packet_buffer_reserved(void){ 786 return hci_stack->hci_packet_buffer_reserved; 787 } 788 789 // reserves outgoing packet buffer. 790 // @return 1 if successful 791 bool hci_reserve_packet_buffer(void){ 792 if (hci_stack->hci_packet_buffer_reserved) { 793 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 794 return false; 795 } 796 hci_stack->hci_packet_buffer_reserved = true; 797 return true; 798 } 799 800 void hci_release_packet_buffer(void){ 801 hci_stack->hci_packet_buffer_reserved = false; 802 } 803 804 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 805 static int hci_transport_synchronous(void){ 806 return hci_stack->hci_transport->can_send_packet_now == NULL; 807 } 808 809 // used for debugging 810 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 811 static void hci_controller_dump_packets(void){ 812 // format: "{handle:04x}:{count:02d} " 813 char summaries[3][7 * 8 + 1]; 814 uint16_t totals[3]; 815 uint8_t index; 816 for (index = 0 ; index < 3 ; index++){ 817 summaries[index][0] = 0; 818 totals[index] = 0; 819 } 820 btstack_linked_item_t *it; 821 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 822 hci_connection_t * connection = (hci_connection_t *) it; 823 switch (connection->address_type){ 824 case BD_ADDR_TYPE_ACL: 825 index = 0; 826 break; 827 case BD_ADDR_TYPE_SCO: 828 index = 2; 829 break; 830 default: 831 index = 1; 832 break; 833 } 834 totals[index] += connection->num_packets_sent; 835 char item_text[10]; 836 sprintf(item_text, "%04x:%02d ", connection->con_handle,connection->num_packets_sent); 837 btstack_strcat(summaries[index], sizeof(summaries[0]), item_text); 838 } 839 for (index = 0 ; index < 3 ; index++){ 840 if (summaries[index][0] == 0){ 841 summaries[index][0] = '-'; 842 summaries[index][1] = 0; 843 } 844 } 845 log_info("Controller ACL BR/EDR: %s total %u / LE: %s total %u / SCO: %s total %u", summaries[0], totals[0], summaries[1], totals[1], summaries[2], totals[2]); 846 } 847 #endif 848 849 static uint8_t hci_send_acl_packet_fragments(hci_connection_t *connection){ 850 851 // 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); 852 853 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 854 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 855 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 856 max_acl_data_packet_length = hci_stack->le_data_packets_length; 857 } 858 859 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 860 if (hci_is_le_connection(connection) && (connection->le_max_tx_octets < max_acl_data_packet_length)){ 861 max_acl_data_packet_length = connection->le_max_tx_octets; 862 } 863 #endif 864 865 log_debug("hci_send_acl_packet_fragments entered"); 866 867 uint8_t status = ERROR_CODE_SUCCESS; 868 // multiple packets could be send on a synchronous HCI transport 869 while (true){ 870 871 log_debug("hci_send_acl_packet_fragments loop entered"); 872 873 // get current data 874 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 875 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 876 bool more_fragments = false; 877 878 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 879 if (current_acl_data_packet_length > max_acl_data_packet_length){ 880 more_fragments = true; 881 current_acl_data_packet_length = max_acl_data_packet_length; 882 } 883 884 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 885 if (acl_header_pos > 0u){ 886 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 887 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 888 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 889 } 890 891 // update header len 892 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 893 894 // count packet 895 connection->num_packets_sent++; 896 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 897 898 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 899 if (more_fragments){ 900 // update start of next fragment to send 901 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 902 } else { 903 // done 904 hci_stack->acl_fragmentation_pos = 0; 905 hci_stack->acl_fragmentation_total_size = 0; 906 } 907 908 // send packet 909 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 910 const int size = current_acl_data_packet_length + 4; 911 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 912 hci_stack->acl_fragmentation_tx_active = 1; 913 int err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 914 if (err != 0){ 915 // no error from HCI Transport expected 916 status = ERROR_CODE_HARDWARE_FAILURE; 917 } 918 919 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 920 hci_controller_dump_packets(); 921 #endif 922 923 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 924 925 // done yet? 926 if (!more_fragments) break; 927 928 // can send more? 929 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return status; 930 } 931 932 log_debug("hci_send_acl_packet_fragments loop over"); 933 934 // release buffer now for synchronous transport 935 if (hci_transport_synchronous()){ 936 hci_stack->acl_fragmentation_tx_active = 0; 937 hci_release_packet_buffer(); 938 hci_emit_transport_packet_sent(); 939 } 940 941 return status; 942 } 943 944 // pre: caller has reserved the packet buffer 945 uint8_t hci_send_acl_packet_buffer(int size){ 946 btstack_assert(hci_stack->hci_packet_buffer_reserved); 947 948 uint8_t * packet = hci_stack->hci_packet_buffer; 949 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 950 951 // check for free places on Bluetooth module 952 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 953 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 954 hci_release_packet_buffer(); 955 hci_emit_transport_packet_sent(); 956 return BTSTACK_ACL_BUFFERS_FULL; 957 } 958 959 hci_connection_t *connection = hci_connection_for_handle( con_handle); 960 if (!connection) { 961 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 962 hci_release_packet_buffer(); 963 hci_emit_transport_packet_sent(); 964 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 965 } 966 967 #ifdef ENABLE_CLASSIC 968 hci_connection_timestamp(connection); 969 #endif 970 971 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 972 973 // setup data 974 hci_stack->acl_fragmentation_total_size = size; 975 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 976 977 return hci_send_acl_packet_fragments(connection); 978 } 979 980 #ifdef ENABLE_CLASSIC 981 // pre: caller has reserved the packet buffer 982 uint8_t hci_send_sco_packet_buffer(int size){ 983 btstack_assert(hci_stack->hci_packet_buffer_reserved); 984 985 uint8_t * packet = hci_stack->hci_packet_buffer; 986 987 // skip checks in loopback mode 988 if (!hci_stack->loopback_mode){ 989 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 990 991 // check for free places on Bluetooth module 992 if (!hci_can_send_prepared_sco_packet_now()) { 993 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 994 hci_release_packet_buffer(); 995 hci_emit_transport_packet_sent(); 996 return BTSTACK_ACL_BUFFERS_FULL; 997 } 998 999 // track send packet in connection struct 1000 hci_connection_t *connection = hci_connection_for_handle( con_handle); 1001 if (!connection) { 1002 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 1003 hci_release_packet_buffer(); 1004 hci_emit_transport_packet_sent(); 1005 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1006 } 1007 1008 if (hci_have_usb_transport()){ 1009 // token used 1010 hci_stack->sco_can_send_now = false; 1011 } else { 1012 if (hci_stack->synchronous_flow_control_enabled){ 1013 connection->num_packets_sent++; 1014 } else { 1015 connection->sco_tx_ready--; 1016 } 1017 } 1018 } 1019 1020 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 1021 1022 #ifdef HAVE_SCO_TRANSPORT 1023 hci_stack->sco_transport->send_packet(packet, size); 1024 hci_release_packet_buffer(); 1025 hci_emit_transport_packet_sent(); 1026 1027 return 0; 1028 #else 1029 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 1030 if (hci_transport_synchronous()){ 1031 hci_release_packet_buffer(); 1032 hci_emit_transport_packet_sent(); 1033 } 1034 1035 if (err != 0){ 1036 return ERROR_CODE_HARDWARE_FAILURE; 1037 } 1038 return ERROR_CODE_SUCCESS; 1039 #endif 1040 } 1041 #endif 1042 1043 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 1044 static uint8_t hci_send_iso_packet_fragments(void){ 1045 1046 uint16_t max_iso_data_packet_length = hci_stack->le_iso_packets_length; 1047 uint8_t status = ERROR_CODE_SUCCESS; 1048 // multiple packets could be send on a synchronous HCI transport 1049 while (true){ 1050 1051 // get current data 1052 const uint16_t iso_header_pos = hci_stack->iso_fragmentation_pos - 4u; 1053 int current_iso_data_packet_length = hci_stack->iso_fragmentation_total_size - hci_stack->iso_fragmentation_pos; 1054 bool more_fragments = false; 1055 1056 // if ISO packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 1057 if (current_iso_data_packet_length > max_iso_data_packet_length){ 1058 more_fragments = true; 1059 current_iso_data_packet_length = max_iso_data_packet_length; 1060 } 1061 1062 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 1063 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1064 uint8_t pb_flags; 1065 if (iso_header_pos == 0u){ 1066 // first fragment, keep TS field 1067 pb_flags = more_fragments ? 0x00 : 0x02; 1068 handle_and_flags = (handle_and_flags & 0x4fffu) | (pb_flags << 12u); 1069 } else { 1070 // later fragment, drop TS field 1071 pb_flags = more_fragments ? 0x01 : 0x03; 1072 handle_and_flags = (handle_and_flags & 0x0fffu) | (pb_flags << 12u); 1073 } 1074 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos, handle_and_flags); 1075 1076 // update header len 1077 little_endian_store_16(hci_stack->hci_packet_buffer, iso_header_pos + 2u, current_iso_data_packet_length); 1078 1079 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 1080 if (more_fragments){ 1081 // update start of next fragment to send 1082 hci_stack->iso_fragmentation_pos += current_iso_data_packet_length; 1083 } else { 1084 // done 1085 hci_stack->iso_fragmentation_pos = 0; 1086 hci_stack->iso_fragmentation_total_size = 0; 1087 } 1088 1089 // send packet 1090 uint8_t * packet = &hci_stack->hci_packet_buffer[iso_header_pos]; 1091 const int size = current_iso_data_packet_length + 4; 1092 hci_dump_packet(HCI_ISO_DATA_PACKET, 0, packet, size); 1093 hci_stack->iso_fragmentation_tx_active = true; 1094 int err = hci_stack->hci_transport->send_packet(HCI_ISO_DATA_PACKET, packet, size); 1095 if (err != 0){ 1096 // no error from HCI Transport expected 1097 status = ERROR_CODE_HARDWARE_FAILURE; 1098 } 1099 1100 // done yet? 1101 if (!more_fragments) break; 1102 1103 // can send more? 1104 if (!hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)) return false; 1105 } 1106 1107 // release buffer now for synchronous transport 1108 if (hci_transport_synchronous()){ 1109 hci_stack->iso_fragmentation_tx_active = false; 1110 hci_release_packet_buffer(); 1111 hci_emit_transport_packet_sent(); 1112 } 1113 1114 return status; 1115 } 1116 1117 uint8_t hci_send_iso_packet_buffer(uint16_t size){ 1118 btstack_assert(hci_stack->hci_packet_buffer_reserved); 1119 1120 hci_con_handle_t con_handle = (hci_con_handle_t) little_endian_read_16(hci_stack->hci_packet_buffer, 0) & 0xfff; 1121 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(con_handle); 1122 if (iso_stream == NULL){ 1123 hci_release_packet_buffer(); 1124 hci_iso_notify_can_send_now(); 1125 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 1126 } 1127 1128 // TODO: check for space on controller 1129 1130 // skip iso packets if needed 1131 if (iso_stream->num_packets_to_skip > 0){ 1132 iso_stream->num_packets_to_skip--; 1133 // pretend it was processed and trigger next one 1134 hci_release_packet_buffer(); 1135 hci_iso_notify_can_send_now(); 1136 return ERROR_CODE_SUCCESS; 1137 } 1138 1139 // track outgoing packet sent 1140 log_info("Outgoing ISO packet for con handle 0x%04x", con_handle); 1141 iso_stream->num_packets_sent++; 1142 1143 // setup data 1144 hci_stack->iso_fragmentation_total_size = size; 1145 hci_stack->iso_fragmentation_pos = 4; // start of L2CAP packet 1146 1147 return hci_send_iso_packet_fragments(); 1148 } 1149 #endif 1150 1151 static void acl_handler(uint8_t *packet, uint16_t size){ 1152 1153 // get info 1154 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 1155 hci_connection_t *conn = hci_connection_for_handle(con_handle); 1156 uint8_t acl_flags = READ_ACL_FLAGS(packet); 1157 uint16_t acl_length = READ_ACL_LENGTH(packet); 1158 1159 // ignore non-registered handle 1160 if (!conn){ 1161 log_error("acl_handler called with non-registered handle %u!" , con_handle); 1162 return; 1163 } 1164 1165 // assert packet is complete 1166 if ((acl_length + 4u) != size){ 1167 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 1168 return; 1169 } 1170 1171 #ifdef ENABLE_CLASSIC 1172 // update idle timestamp 1173 hci_connection_timestamp(conn); 1174 #endif 1175 1176 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1177 hci_stack->host_completed_packets = 1; 1178 conn->num_packets_completed++; 1179 #endif 1180 1181 // handle different packet types 1182 switch (acl_flags & 0x03u) { 1183 1184 case 0x01: // continuation fragment 1185 1186 // sanity checks 1187 if (conn->acl_recombination_pos == 0u) { 1188 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 1189 return; 1190 } 1191 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 1192 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 1193 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1194 conn->acl_recombination_pos = 0; 1195 return; 1196 } 1197 1198 // append fragment payload (header already stored) 1199 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 1200 &packet[4], acl_length); 1201 conn->acl_recombination_pos += acl_length; 1202 1203 // forward complete L2CAP packet if complete. 1204 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 1205 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 1206 // reset recombination buffer 1207 conn->acl_recombination_length = 0; 1208 conn->acl_recombination_pos = 0; 1209 } 1210 break; 1211 1212 case 0x02: { // first fragment 1213 1214 // sanity check 1215 if (conn->acl_recombination_pos) { 1216 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 1217 conn->acl_recombination_pos = 0; 1218 } 1219 1220 // peek into L2CAP packet! 1221 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 1222 1223 // compare fragment size to L2CAP packet size 1224 if (acl_length >= (l2cap_length + 4u)){ 1225 // forward fragment as L2CAP packet 1226 hci_emit_acl_packet(packet, acl_length + 4u); 1227 } else { 1228 1229 if (acl_length > HCI_ACL_BUFFER_SIZE){ 1230 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 1231 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 1232 return; 1233 } 1234 1235 // store first fragment and tweak acl length for complete package 1236 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 1237 packet, acl_length + 4u); 1238 conn->acl_recombination_pos = acl_length + 4u; 1239 conn->acl_recombination_length = l2cap_length; 1240 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 1241 } 1242 break; 1243 1244 } 1245 default: 1246 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 1247 return; 1248 } 1249 1250 // execute main loop 1251 hci_run(); 1252 } 1253 1254 static void hci_connection_stop_timer(hci_connection_t * conn){ 1255 btstack_run_loop_remove_timer(&conn->timeout); 1256 #ifdef ENABLE_CLASSIC 1257 btstack_run_loop_remove_timer(&conn->timeout_sco); 1258 #endif 1259 } 1260 1261 static void hci_shutdown_connection(hci_connection_t *conn){ 1262 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 1263 1264 #ifdef ENABLE_CLASSIC 1265 #if defined(ENABLE_SCO_OVER_HCI) || defined(HAVE_SCO_TRANSPORT) 1266 bd_addr_type_t addr_type = conn->address_type; 1267 #endif 1268 #ifdef HAVE_SCO_TRANSPORT 1269 hci_con_handle_t con_handle = conn->con_handle; 1270 #endif 1271 #endif 1272 1273 hci_connection_stop_timer(conn); 1274 1275 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1276 btstack_memory_hci_connection_free( conn ); 1277 1278 // now it's gone 1279 hci_emit_nr_connections_changed(); 1280 1281 #ifdef ENABLE_CLASSIC 1282 #ifdef ENABLE_SCO_OVER_HCI 1283 // update SCO 1284 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->hci_transport != NULL) && (hci_stack->hci_transport->set_sco_config != NULL)){ 1285 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 1286 } 1287 #endif 1288 #ifdef HAVE_SCO_TRANSPORT 1289 if ((addr_type == BD_ADDR_TYPE_SCO) && (hci_stack->sco_transport != NULL)){ 1290 hci_stack->sco_transport->close(con_handle); 1291 } 1292 #endif 1293 #endif 1294 } 1295 1296 #ifdef ENABLE_CLASSIC 1297 1298 static const uint16_t packet_type_sizes[] = { 1299 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 1300 HCI_ACL_DH1_SIZE, 0, 0, 0, 1301 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 1302 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 1303 }; 1304 static const uint8_t packet_type_feature_requirement_bit[] = { 1305 0, // 3 slot packets 1306 1, // 5 slot packets 1307 25, // EDR 2 mpbs 1308 26, // EDR 3 mbps 1309 39, // 3 slot EDR packts 1310 40, // 5 slot EDR packet 1311 }; 1312 static const uint16_t packet_type_feature_packet_mask[] = { 1313 0x0f00, // 3 slot packets 1314 0xf000, // 5 slot packets 1315 0x1102, // EDR 2 mpbs 1316 0x2204, // EDR 3 mbps 1317 0x0300, // 3 slot EDR packts 1318 0x3000, // 5 slot EDR packet 1319 }; 1320 1321 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1322 // enable packet types based on size 1323 uint16_t packet_types = 0; 1324 unsigned int i; 1325 for (i=0;i<16;i++){ 1326 if (packet_type_sizes[i] == 0) continue; 1327 if (packet_type_sizes[i] <= buffer_size){ 1328 packet_types |= 1 << i; 1329 } 1330 } 1331 // disable packet types due to missing local supported features 1332 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1333 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1334 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1335 if (feature_set) continue; 1336 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1337 packet_types &= ~packet_type_feature_packet_mask[i]; 1338 } 1339 // flip bits for "may not be used" 1340 packet_types ^= 0x3306; 1341 return packet_types; 1342 } 1343 1344 uint16_t hci_usable_acl_packet_types(void){ 1345 return hci_stack->packet_types; 1346 } 1347 #endif 1348 1349 uint8_t* hci_get_outgoing_packet_buffer(void){ 1350 // hci packet buffer is >= acl data packet length 1351 return hci_stack->hci_packet_buffer; 1352 } 1353 1354 uint16_t hci_max_acl_data_packet_length(void){ 1355 return hci_stack->acl_data_packet_length; 1356 } 1357 1358 #ifdef ENABLE_CLASSIC 1359 bool hci_extended_sco_link_supported(void){ 1360 // No. 31, byte 3, bit 7 1361 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1362 } 1363 #endif 1364 1365 bool hci_non_flushable_packet_boundary_flag_supported(void){ 1366 // No. 54, byte 6, bit 6 1367 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1368 } 1369 1370 #ifdef ENABLE_CLASSIC 1371 static int gap_ssp_supported(void){ 1372 // No. 51, byte 6, bit 3 1373 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1374 } 1375 #endif 1376 1377 static int hci_classic_supported(void){ 1378 #ifdef ENABLE_CLASSIC 1379 // No. 37, byte 4, bit 5, = No BR/EDR Support 1380 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1381 #else 1382 return 0; 1383 #endif 1384 } 1385 1386 static int hci_le_supported(void){ 1387 #ifdef ENABLE_BLE 1388 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1389 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1390 #else 1391 return 0; 1392 #endif 1393 } 1394 1395 static bool hci_command_supported(uint8_t command_index){ 1396 return (hci_stack->local_supported_commands & (1LU << command_index)) != 0; 1397 } 1398 1399 #ifdef ENABLE_BLE 1400 1401 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1402 static bool hci_extended_advertising_supported(void){ 1403 return hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_EXTENDED_ADVERTISING_ENABLE); 1404 } 1405 #endif 1406 1407 static void hci_get_own_address_for_addr_type(uint8_t own_addr_type, bd_addr_t own_addr){ 1408 if (own_addr_type == BD_ADDR_TYPE_LE_PUBLIC){ 1409 (void)memcpy(own_addr, hci_stack->local_bd_addr, 6); 1410 } else { 1411 (void)memcpy(own_addr, hci_stack->le_random_address, 6); 1412 } 1413 } 1414 1415 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1416 *addr_type = hci_stack->le_own_addr_type; 1417 hci_get_own_address_for_addr_type(hci_stack->le_own_addr_type, addr); 1418 } 1419 1420 #ifdef ENABLE_LE_PERIPHERAL 1421 void gap_le_get_own_advertisements_address(uint8_t * addr_type, bd_addr_t addr){ 1422 *addr_type = hci_stack->le_advertisements_own_addr_type; 1423 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, addr); 1424 }; 1425 #endif 1426 1427 #ifdef ENABLE_LE_CENTRAL 1428 1429 /** 1430 * @brief Get own addr type and address used for LE connections (Central) 1431 */ 1432 void gap_le_get_own_connection_address(uint8_t * addr_type, bd_addr_t addr){ 1433 *addr_type = hci_stack->le_connection_own_addr_type; 1434 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, addr); 1435 } 1436 1437 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1438 1439 uint16_t offset = 3; 1440 uint8_t num_reports = packet[offset]; 1441 offset += 1; 1442 1443 uint16_t i; 1444 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1445 for (i=0; (i<num_reports) && (offset < size);i++){ 1446 // sanity checks on data_length: 1447 uint8_t data_length = packet[offset + 8]; 1448 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1449 if ((offset + 9u + data_length + 1u) > size) return; 1450 // setup event 1451 uint8_t event_size = 10u + data_length; 1452 uint16_t pos = 0; 1453 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1454 event[pos++] = event_size; 1455 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1456 offset += 8; 1457 pos += 8; 1458 event[pos++] = packet[offset + 1 + data_length]; // rssi 1459 event[pos++] = data_length; 1460 offset++; 1461 (void)memcpy(&event[pos], &packet[offset], data_length); 1462 pos += data_length; 1463 offset += data_length + 1u; // rssi 1464 hci_emit_event(event, pos, 1); 1465 } 1466 } 1467 1468 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 1469 void le_handle_extended_advertisement_report(uint8_t *packet, uint16_t size) { 1470 uint16_t offset = 3; 1471 uint8_t num_reports = packet[offset++]; 1472 uint8_t event[2 + 255]; // use upper bound to avoid var size automatic var 1473 uint8_t i; 1474 for (i=0; (i<num_reports) && (offset < size);i++){ 1475 // sanity checks on data_length: 1476 uint16_t data_length = packet[offset + 23]; 1477 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1478 if ((offset + 24u + data_length) > size) return; 1479 uint16_t event_type = little_endian_read_16(packet, offset); 1480 offset += 2; 1481 if ((event_type & 0x10) != 0) { 1482 // setup legacy event 1483 uint8_t legacy_event_type; 1484 switch (event_type){ 1485 case 0b0010011: 1486 // ADV_IND 1487 legacy_event_type = 0; 1488 break; 1489 case 0b0010101: 1490 // ADV_DIRECT_IND 1491 legacy_event_type = 1; 1492 break; 1493 case 0b0010010: 1494 // ADV_SCAN_IND 1495 legacy_event_type = 2; 1496 break; 1497 case 0b0010000: 1498 // ADV_NONCONN_IND 1499 legacy_event_type = 3; 1500 break; 1501 case 0b0011011: 1502 case 0b0011010: 1503 // SCAN_RSP 1504 legacy_event_type = 4; 1505 break; 1506 default: 1507 legacy_event_type = 0; 1508 break; 1509 } 1510 uint16_t pos = 0; 1511 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1512 event[pos++] = 10u + data_length; 1513 event[pos++] = legacy_event_type; 1514 // copy address type + address 1515 (void) memcpy(&event[pos], &packet[offset], 1 + 6); 1516 offset += 7; 1517 pos += 7; 1518 // skip primary_phy, secondary_phy, advertising_sid, tx_power 1519 offset += 4; 1520 // copy rssi 1521 event[pos++] = packet[offset++]; 1522 // skip periodic advertising interval and direct address 1523 offset += 9; 1524 // copy data len + data; 1525 (void) memcpy(&event[pos], &packet[offset], 1 + data_length); 1526 pos += 1 +data_length; 1527 offset += 1+ data_length; 1528 hci_emit_event(event, pos, 1); 1529 } else { 1530 event[0] = GAP_EVENT_EXTENDED_ADVERTISING_REPORT; 1531 uint8_t report_len = 24 + data_length; 1532 event[1] = report_len; 1533 little_endian_store_16(event, 2, event_type); 1534 memcpy(&event[4], &packet[offset], report_len); 1535 offset += report_len; 1536 hci_emit_event(event, 2 + report_len, 1); 1537 } 1538 } 1539 } 1540 #endif 1541 1542 #endif 1543 #endif 1544 1545 #ifdef ENABLE_BLE 1546 #ifdef ENABLE_LE_PERIPHERAL 1547 static void hci_update_advertisements_enabled_for_current_roles(void){ 1548 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ENABLED) != 0){ 1549 // get number of active le slave connections 1550 int num_slave_connections = 0; 1551 btstack_linked_list_iterator_t it; 1552 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1553 while (btstack_linked_list_iterator_has_next(&it)){ 1554 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1555 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1556 if (con->state != OPEN) continue; 1557 if (con->role != HCI_ROLE_SLAVE) continue; 1558 if (!hci_is_le_connection(con)) continue; 1559 num_slave_connections++; 1560 } 1561 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1562 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1563 } else { 1564 hci_stack->le_advertisements_enabled_for_current_roles = false; 1565 } 1566 } 1567 #endif 1568 #endif 1569 1570 #ifdef ENABLE_CLASSIC 1571 static void gap_run_set_local_name(void){ 1572 hci_reserve_packet_buffer(); 1573 uint8_t * packet = hci_stack->hci_packet_buffer; 1574 // construct HCI Command and send 1575 uint16_t opcode = hci_write_local_name.opcode; 1576 hci_stack->last_cmd_opcode = opcode; 1577 packet[0] = opcode & 0xff; 1578 packet[1] = opcode >> 8; 1579 packet[2] = DEVICE_NAME_LEN; 1580 memset(&packet[3], 0, DEVICE_NAME_LEN); 1581 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1582 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1583 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1584 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1585 // expand '00:00:00:00:00:00' in name with bd_addr 1586 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1587 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1588 } 1589 1590 static void gap_run_set_eir_data(void){ 1591 hci_reserve_packet_buffer(); 1592 uint8_t * packet = hci_stack->hci_packet_buffer; 1593 // construct HCI Command in-place and send 1594 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1595 hci_stack->last_cmd_opcode = opcode; 1596 uint16_t offset = 0; 1597 packet[offset++] = opcode & 0xff; 1598 packet[offset++] = opcode >> 8; 1599 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1600 packet[offset++] = 0; // FEC not required 1601 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1602 if (hci_stack->eir_data){ 1603 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1604 ad_context_t context; 1605 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1606 uint8_t data_type = ad_iterator_get_data_type(&context); 1607 uint8_t size = ad_iterator_get_data_len(&context); 1608 const uint8_t *data = ad_iterator_get_data(&context); 1609 // copy item 1610 packet[offset++] = size + 1; 1611 packet[offset++] = data_type; 1612 memcpy(&packet[offset], data, size); 1613 // update name item 1614 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1615 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1616 } 1617 offset += size; 1618 } 1619 } else { 1620 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1621 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1622 packet[offset++] = bytes_to_copy + 1; 1623 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1624 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1625 // expand '00:00:00:00:00:00' in name with bd_addr 1626 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1627 } 1628 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1629 } 1630 1631 static void hci_run_gap_tasks_classic(void){ 1632 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_CLASS_OF_DEVICE) != 0) { 1633 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_CLASS_OF_DEVICE; 1634 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1635 return; 1636 } 1637 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_LOCAL_NAME) != 0) { 1638 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_LOCAL_NAME; 1639 gap_run_set_local_name(); 1640 return; 1641 } 1642 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_EIR_DATA) != 0) { 1643 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_EIR_DATA; 1644 gap_run_set_eir_data(); 1645 return; 1646 } 1647 if ((hci_stack->gap_tasks_classic & GAP_TASK_SET_DEFAULT_LINK_POLICY) != 0) { 1648 hci_stack->gap_tasks_classic &= ~GAP_TASK_SET_DEFAULT_LINK_POLICY; 1649 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1650 return; 1651 } 1652 // write page scan activity 1653 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY) != 0) { 1654 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 1655 hci_send_cmd(&hci_write_page_scan_activity, hci_stack->new_page_scan_interval, hci_stack->new_page_scan_window); 1656 return; 1657 } 1658 // write page scan type 1659 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_SCAN_TYPE) != 0) { 1660 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_SCAN_TYPE; 1661 hci_send_cmd(&hci_write_page_scan_type, hci_stack->new_page_scan_type); 1662 return; 1663 } 1664 // write page timeout 1665 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_PAGE_TIMEOUT) != 0) { 1666 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_PAGE_TIMEOUT; 1667 hci_send_cmd(&hci_write_page_timeout, hci_stack->page_timeout); 1668 return; 1669 } 1670 // send scan enable 1671 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_SCAN_ENABLE) != 0) { 1672 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_SCAN_ENABLE; 1673 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 1674 return; 1675 } 1676 // send write scan activity 1677 if ((hci_stack->gap_tasks_classic & GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY) != 0) { 1678 hci_stack->gap_tasks_classic &= ~GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 1679 hci_send_cmd(&hci_write_inquiry_scan_activity, hci_stack->inquiry_scan_interval, hci_stack->inquiry_scan_window); 1680 return; 1681 } 1682 } 1683 #endif 1684 1685 #ifndef HAVE_HOST_CONTROLLER_API 1686 1687 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1688 if (!hci_stack->config) return 0; 1689 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1690 // Limit baud rate for Broadcom chipsets to 3 mbps 1691 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1692 baud_rate = 3000000; 1693 } 1694 return baud_rate; 1695 } 1696 1697 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1698 UNUSED(ds); 1699 1700 switch (hci_stack->substate){ 1701 case HCI_INIT_W4_SEND_RESET: 1702 log_info("Resend HCI Reset"); 1703 hci_stack->substate = HCI_INIT_SEND_RESET; 1704 hci_stack->num_cmd_packets = 1; 1705 hci_run(); 1706 break; 1707 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1708 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1709 if (hci_stack->hci_transport->reset_link){ 1710 hci_stack->hci_transport->reset_link(); 1711 } 1712 1713 /* fall through */ 1714 1715 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1716 log_info("Resend HCI Reset - CSR Warm Boot"); 1717 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1718 hci_stack->num_cmd_packets = 1; 1719 hci_run(); 1720 break; 1721 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1722 if (hci_stack->hci_transport->set_baudrate){ 1723 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1724 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1725 hci_stack->hci_transport->set_baudrate(baud_rate); 1726 } 1727 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1728 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1729 if (hci_stack->hci_transport->reset_link){ 1730 log_info("Link Reset"); 1731 hci_stack->hci_transport->reset_link(); 1732 } 1733 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1734 hci_run(); 1735 } 1736 break; 1737 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1738 // otherwise continue 1739 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1740 hci_send_cmd(&hci_read_local_supported_commands); 1741 break; 1742 default: 1743 break; 1744 } 1745 } 1746 #endif 1747 1748 static void hci_initializing_next_state(void){ 1749 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1750 } 1751 1752 static void hci_init_done(void){ 1753 // done. tell the app 1754 log_info("hci_init_done -> HCI_STATE_WORKING"); 1755 hci_stack->state = HCI_STATE_WORKING; 1756 hci_emit_state(); 1757 } 1758 1759 // assumption: hci_can_send_command_packet_now() == true 1760 static void hci_initializing_run(void){ 1761 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1762 1763 if (!hci_can_send_command_packet_now()) return; 1764 1765 #ifndef HAVE_HOST_CONTROLLER_API 1766 bool need_baud_change = hci_stack->config 1767 && hci_stack->chipset 1768 && hci_stack->chipset->set_baudrate_command 1769 && hci_stack->hci_transport->set_baudrate 1770 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1771 #endif 1772 1773 switch (hci_stack->substate){ 1774 case HCI_INIT_SEND_RESET: 1775 hci_state_reset(); 1776 1777 #ifndef HAVE_HOST_CONTROLLER_API 1778 // prepare reset if command complete not received in 100ms 1779 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1780 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1781 btstack_run_loop_add_timer(&hci_stack->timeout); 1782 #endif 1783 // send command 1784 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1785 hci_send_cmd(&hci_reset); 1786 break; 1787 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1788 hci_send_cmd(&hci_read_local_version_information); 1789 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1790 break; 1791 1792 #ifndef HAVE_HOST_CONTROLLER_API 1793 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1794 hci_state_reset(); 1795 // prepare reset if command complete not received in 100ms 1796 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1797 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1798 btstack_run_loop_add_timer(&hci_stack->timeout); 1799 // send command 1800 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1801 hci_send_cmd(&hci_reset); 1802 break; 1803 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1804 hci_state_reset(); 1805 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1806 hci_send_cmd(&hci_reset); 1807 break; 1808 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1809 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1810 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1811 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1812 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1813 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1814 break; 1815 } 1816 case HCI_INIT_SET_BD_ADDR: 1817 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1818 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1819 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1820 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1821 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1822 break; 1823 case HCI_INIT_SEND_READ_LOCAL_NAME: 1824 #ifdef ENABLE_CLASSIC 1825 hci_send_cmd(&hci_read_local_name); 1826 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1827 break; 1828 #endif 1829 /* fall through */ 1830 1831 case HCI_INIT_SEND_BAUD_CHANGE: 1832 if (need_baud_change) { 1833 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1834 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1835 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1836 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1837 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1838 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1839 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1840 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1841 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1842 btstack_run_loop_add_timer(&hci_stack->timeout); 1843 } 1844 break; 1845 } 1846 1847 /* fall through */ 1848 1849 case HCI_INIT_CUSTOM_INIT: 1850 // Custom initialization 1851 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1852 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1853 bool send_cmd = false; 1854 switch (hci_stack->chipset_result){ 1855 case BTSTACK_CHIPSET_VALID_COMMAND: 1856 send_cmd = true; 1857 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1858 break; 1859 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1860 send_cmd = true; 1861 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1862 log_info("CSR Warm Boot"); 1863 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1864 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1865 btstack_run_loop_add_timer(&hci_stack->timeout); 1866 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1867 && hci_stack->config 1868 && hci_stack->chipset 1869 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1870 && hci_stack->hci_transport->set_baudrate 1871 && hci_transport_uart_get_main_baud_rate()){ 1872 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1873 } else { 1874 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1875 } 1876 break; 1877 default: 1878 break; 1879 } 1880 1881 if (send_cmd){ 1882 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1883 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1884 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1885 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1886 break; 1887 } 1888 log_info("Init script done"); 1889 1890 // Init script download on Broadcom chipsets causes: 1891 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1892 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1893 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1894 1895 // - baud rate to reset, restore UART baud rate if needed 1896 if (need_baud_change) { 1897 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1898 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1899 hci_stack->hci_transport->set_baudrate(baud_rate); 1900 } 1901 1902 uint16_t bcm_delay_ms = 300; 1903 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1904 // -> Work around: wait here. 1905 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1906 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1907 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1908 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1909 btstack_run_loop_add_timer(&hci_stack->timeout); 1910 break; 1911 } 1912 } 1913 #endif 1914 /* fall through */ 1915 1916 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1917 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1918 hci_send_cmd(&hci_read_local_supported_commands); 1919 break; 1920 case HCI_INIT_READ_BD_ADDR: 1921 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1922 hci_send_cmd(&hci_read_bd_addr); 1923 break; 1924 case HCI_INIT_READ_BUFFER_SIZE: 1925 // only read buffer size if supported 1926 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_BUFFER_SIZE)){ 1927 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1928 hci_send_cmd(&hci_read_buffer_size); 1929 break; 1930 } 1931 1932 /* fall through */ 1933 1934 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1935 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1936 hci_send_cmd(&hci_read_local_supported_features); 1937 break; 1938 1939 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1940 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1941 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1942 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1943 break; 1944 case HCI_INIT_HOST_BUFFER_SIZE: 1945 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1946 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1947 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1948 break; 1949 #endif 1950 1951 case HCI_INIT_SET_EVENT_MASK: 1952 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1953 if (hci_le_supported()){ 1954 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x3FFFFFFFU); 1955 } else { 1956 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1957 hci_send_cmd(&hci_set_event_mask,0xFFFFFFFFU, 0x1FFFFFFFU); 1958 } 1959 break; 1960 1961 case HCI_INIT_SET_EVENT_MASK_2: 1962 // On Bluettooth PTS dongle (BL 654) with PacketCraft HCI Firmware (LMP subversion) 0x5244, 1963 // setting Event Mask 2 causes Controller to drop Encryption Change events. 1964 if (hci_command_supported(SUPPORTED_HCI_COMMAND_SET_EVENT_MASK_PAGE_2) 1965 && (hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_PACKETCRAFT_INC)){ 1966 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK_2; 1967 // Encryption Change Event v2 - bit 25 1968 hci_send_cmd(&hci_set_event_mask_2,0x02000000U, 0x0); 1969 break; 1970 } 1971 1972 #ifdef ENABLE_CLASSIC 1973 /* fall through */ 1974 1975 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1976 if (hci_classic_supported() && gap_ssp_supported()){ 1977 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1978 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1979 break; 1980 } 1981 1982 /* fall through */ 1983 1984 case HCI_INIT_WRITE_INQUIRY_MODE: 1985 if (hci_classic_supported()){ 1986 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1987 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1988 break; 1989 } 1990 1991 /* fall through */ 1992 1993 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1994 // skip write secure connections host support if not supported or disabled 1995 if (hci_classic_supported() && hci_stack->secure_connections_enable 1996 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SECURE_CONNECTIONS_HOST)) { 1997 hci_stack->secure_connections_active = true; 1998 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1999 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 2000 break; 2001 } 2002 2003 /* fall through */ 2004 2005 case HCI_INIT_SET_MIN_ENCRYPTION_KEY_SIZE: 2006 // skip set min encryption key size 2007 if (hci_classic_supported() && hci_command_supported(SUPPORTED_HCI_COMMAND_SET_MIN_ENCRYPTION_KEY_SIZE)) { 2008 hci_stack->substate = HCI_INIT_W4_SET_MIN_ENCRYPTION_KEY_SIZE; 2009 hci_send_cmd(&hci_set_min_encryption_key_size, hci_stack->gap_required_encyrption_key_size); 2010 break; 2011 } 2012 2013 #ifdef ENABLE_SCO_OVER_HCI 2014 /* fall through */ 2015 2016 // only sent if ENABLE_SCO_OVER_HCI is defined 2017 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2018 // skip write synchronous flow control if not supported 2019 if (hci_classic_supported() 2020 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE)) { 2021 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 2022 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 2023 break; 2024 } 2025 /* fall through */ 2026 2027 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 2028 // skip write default erroneous data reporting if not supported 2029 if (hci_classic_supported() 2030 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING)) { 2031 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 2032 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 2033 break; 2034 } 2035 #endif 2036 2037 #if defined(ENABLE_SCO_OVER_HCI) || defined(ENABLE_SCO_OVER_PCM) 2038 /* fall through */ 2039 2040 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 2041 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 2042 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2043 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 2044 #ifdef ENABLE_SCO_OVER_HCI 2045 log_info("BCM: Route SCO data via HCI transport"); 2046 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 2047 #endif 2048 #ifdef ENABLE_SCO_OVER_PCM 2049 log_info("BCM: Route SCO data via PCM interface"); 2050 #ifdef ENABLE_BCM_PCM_WBS 2051 // 512 kHz bit clock for 2 channels x 16 bit x 16 kHz 2052 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 2053 #else 2054 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2055 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 2056 #endif 2057 #endif 2058 break; 2059 } 2060 #endif 2061 2062 #ifdef ENABLE_SCO_OVER_PCM 2063 /* fall through */ 2064 2065 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 2066 if (hci_classic_supported() && (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION)){ 2067 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 2068 log_info("BCM: Config PCM interface for I2S"); 2069 #ifdef ENABLE_BCM_PCM_WBS 2070 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 2071 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 2072 #else 2073 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 2074 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 2075 #endif 2076 break; 2077 } 2078 #endif 2079 #endif 2080 2081 #ifdef ENABLE_BLE 2082 /* fall through */ 2083 2084 // LE INIT 2085 case HCI_INIT_LE_READ_BUFFER_SIZE: 2086 if (hci_le_supported()){ 2087 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 2088 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_BUFFER_SIZE_V2)){ 2089 hci_send_cmd(&hci_le_read_buffer_size_v2); 2090 } else { 2091 hci_send_cmd(&hci_le_read_buffer_size); 2092 } 2093 break; 2094 } 2095 2096 /* fall through */ 2097 2098 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 2099 // skip write le host if not supported (e.g. on LE only EM9301) 2100 if (hci_le_supported() 2101 && hci_command_supported(SUPPORTED_HCI_COMMAND_WRITE_LE_HOST_SUPPORTED)) { 2102 // LE Supported Host = 1, Simultaneous Host = 0 2103 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 2104 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 2105 break; 2106 } 2107 2108 /* fall through */ 2109 2110 case HCI_INIT_LE_SET_EVENT_MASK: 2111 if (hci_le_supported()){ 2112 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 2113 hci_send_cmd(&hci_le_set_event_mask, 0xfffffdff, 0x07); // all events from core v5.3 without LE Enhanced Connection Complete 2114 break; 2115 } 2116 #endif 2117 2118 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2119 /* fall through */ 2120 2121 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 2122 if (hci_le_supported() 2123 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_READ_MAXIMUM_DATA_LENGTH)) { 2124 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 2125 hci_send_cmd(&hci_le_read_maximum_data_length); 2126 break; 2127 } 2128 2129 /* fall through */ 2130 2131 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 2132 if (hci_le_supported() 2133 && hci_command_supported(SUPPORTED_HCI_COMMAND_LE_WRITE_SUGGESTED_DEFAULT_DATA_LENGTH)) { 2134 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 2135 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 2136 break; 2137 } 2138 #endif 2139 2140 #ifdef ENABLE_LE_CENTRAL 2141 /* fall through */ 2142 2143 case HCI_INIT_READ_WHITE_LIST_SIZE: 2144 if (hci_le_supported()){ 2145 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 2146 hci_send_cmd(&hci_le_read_white_list_size); 2147 break; 2148 } 2149 2150 #endif 2151 2152 #ifdef ENABLE_LE_PERIPHERAL 2153 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2154 /* fall through */ 2155 2156 case HCI_INIT_LE_READ_MAX_ADV_DATA_LEN: 2157 if (hci_extended_advertising_supported()){ 2158 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_ADV_DATA_LEN; 2159 hci_send_cmd(&hci_le_read_maximum_advertising_data_length); 2160 break; 2161 } 2162 #endif 2163 #endif 2164 /* fall through */ 2165 2166 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2167 case HCI_INIT_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS: 2168 if (hci_le_supported()) { 2169 hci_stack->substate = HCI_INIT_W4_LE_SET_HOST_FEATURE_CONNECTED_ISO_STREAMS; 2170 hci_send_cmd(&hci_le_set_host_feature, 32, 1); 2171 break; 2172 } 2173 #endif 2174 2175 /* fall through */ 2176 2177 case HCI_INIT_DONE: 2178 hci_stack->substate = HCI_INIT_DONE; 2179 // main init sequence complete 2180 #ifdef ENABLE_CLASSIC 2181 // check if initial Classic GAP Tasks are completed 2182 if (hci_classic_supported() && (hci_stack->gap_tasks_classic != 0)) { 2183 hci_run_gap_tasks_classic(); 2184 break; 2185 } 2186 #endif 2187 #ifdef ENABLE_BLE 2188 #ifdef ENABLE_LE_CENTRAL 2189 // check if initial LE GAP Tasks are completed 2190 if (hci_le_supported() && hci_stack->le_scanning_param_update) { 2191 hci_run_general_gap_le(); 2192 break; 2193 } 2194 #endif 2195 #endif 2196 hci_init_done(); 2197 break; 2198 2199 default: 2200 return; 2201 } 2202 } 2203 2204 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 2205 bool command_completed = false; 2206 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 2207 uint16_t opcode = little_endian_read_16(packet,3); 2208 if (opcode == hci_stack->last_cmd_opcode){ 2209 command_completed = true; 2210 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 2211 } else { 2212 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 2213 } 2214 } 2215 2216 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 2217 uint8_t status = packet[2]; 2218 uint16_t opcode = little_endian_read_16(packet,4); 2219 if (opcode == hci_stack->last_cmd_opcode){ 2220 if (status){ 2221 command_completed = true; 2222 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 2223 } else { 2224 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 2225 } 2226 } else { 2227 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 2228 } 2229 } 2230 #ifndef HAVE_HOST_CONTROLLER_API 2231 // Vendor == CSR 2232 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2233 // TODO: track actual command 2234 command_completed = true; 2235 } 2236 2237 // Vendor == Toshiba 2238 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 2239 // TODO: track actual command 2240 command_completed = true; 2241 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 2242 hci_stack->num_cmd_packets = 1; 2243 } 2244 #endif 2245 2246 return command_completed; 2247 } 2248 2249 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 2250 2251 UNUSED(size); // ok: less than 6 bytes are read from our buffer 2252 2253 bool command_completed = hci_initializing_event_handler_command_completed(packet); 2254 2255 #ifndef HAVE_HOST_CONTROLLER_API 2256 2257 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 2258 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 2259 // 2260 // HCI Reset 2261 // Timeout 100 ms 2262 // HCI Reset 2263 // Command Complete Reset 2264 // HCI Read Local Version Information 2265 // Command Complete Reset - but we expected Command Complete Read Local Version Information 2266 // hang... 2267 // 2268 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2269 if (!command_completed 2270 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2271 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 2272 2273 uint16_t opcode = little_endian_read_16(packet,3); 2274 if (opcode == hci_reset.opcode){ 2275 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2276 return; 2277 } 2278 } 2279 2280 // CSR & H5 2281 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 2282 if (!command_completed 2283 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2284 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 2285 2286 uint16_t opcode = little_endian_read_16(packet,3); 2287 if (opcode == hci_reset.opcode){ 2288 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 2289 return; 2290 } 2291 } 2292 2293 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 2294 // fix: Correct substate and behave as command below 2295 if (command_completed){ 2296 switch (hci_stack->substate){ 2297 case HCI_INIT_SEND_RESET: 2298 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 2299 break; 2300 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 2301 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 2302 break; 2303 default: 2304 break; 2305 } 2306 } 2307 2308 #endif 2309 2310 if (!command_completed) return; 2311 2312 bool need_baud_change = false; 2313 bool need_addr_change = false; 2314 2315 #ifndef HAVE_HOST_CONTROLLER_API 2316 need_baud_change = hci_stack->config 2317 && hci_stack->chipset 2318 && hci_stack->chipset->set_baudrate_command 2319 && hci_stack->hci_transport->set_baudrate 2320 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 2321 2322 need_addr_change = hci_stack->custom_bd_addr_set 2323 && hci_stack->chipset 2324 && hci_stack->chipset->set_bd_addr_command; 2325 #endif 2326 2327 switch(hci_stack->substate){ 2328 2329 #ifndef HAVE_HOST_CONTROLLER_API 2330 case HCI_INIT_SEND_RESET: 2331 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 2332 // fix: just correct substate and behave as command below 2333 2334 /* fall through */ 2335 #endif 2336 2337 case HCI_INIT_W4_SEND_RESET: 2338 btstack_run_loop_remove_timer(&hci_stack->timeout); 2339 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 2340 return; 2341 2342 #ifndef HAVE_HOST_CONTROLLER_API 2343 case HCI_INIT_W4_SEND_BAUD_CHANGE: 2344 // for STLC2500D, baud rate change already happened. 2345 // for others, baud rate gets changed now 2346 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 2347 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2348 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 2349 hci_stack->hci_transport->set_baudrate(baud_rate); 2350 } 2351 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2352 return; 2353 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 2354 btstack_run_loop_remove_timer(&hci_stack->timeout); 2355 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2356 return; 2357 case HCI_INIT_W4_CUSTOM_INIT: 2358 // repeat custom init 2359 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 2360 return; 2361 #endif 2362 2363 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 2364 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 2365 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 2366 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 2367 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 2368 return; 2369 } 2370 if (need_addr_change){ 2371 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2372 return; 2373 } 2374 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2375 return; 2376 #ifndef HAVE_HOST_CONTROLLER_API 2377 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 2378 if (need_baud_change){ 2379 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 2380 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 2381 hci_stack->hci_transport->set_baudrate(baud_rate); 2382 } 2383 if (need_addr_change){ 2384 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 2385 return; 2386 } 2387 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2388 return; 2389 case HCI_INIT_W4_SET_BD_ADDR: 2390 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 2391 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 2392 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 2393 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 2394 return; 2395 } 2396 // skipping st warm boot 2397 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2398 return; 2399 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 2400 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 2401 return; 2402 #endif 2403 2404 case HCI_INIT_DONE: 2405 // set state if we came here by fall through 2406 hci_stack->substate = HCI_INIT_DONE; 2407 return; 2408 2409 default: 2410 break; 2411 } 2412 hci_initializing_next_state(); 2413 } 2414 2415 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 2416 // CC2564C might emit Connection Complete for rejected incoming SCO connection 2417 // To prevent accidentally free'ing the HCI connection for the ACL connection, 2418 // check if we have been aware of the HCI connection 2419 switch (conn->state){ 2420 case SENT_CREATE_CONNECTION: 2421 case RECEIVED_CONNECTION_REQUEST: 2422 break; 2423 default: 2424 return; 2425 } 2426 2427 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 2428 bd_addr_t bd_address; 2429 (void)memcpy(&bd_address, conn->address, 6); 2430 2431 #ifdef ENABLE_CLASSIC 2432 // cache needed data 2433 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 2434 #endif 2435 2436 // connection failed, remove entry 2437 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2438 btstack_memory_hci_connection_free( conn ); 2439 2440 #ifdef ENABLE_CLASSIC 2441 // notify client if dedicated bonding 2442 if (notify_dedicated_bonding_failed){ 2443 log_info("hci notify_dedicated_bonding_failed"); 2444 hci_emit_dedicated_bonding_result(bd_address, status); 2445 } 2446 2447 // if authentication error, also delete link key 2448 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 2449 gap_drop_link_key_for_bd_addr(bd_address); 2450 } 2451 #else 2452 UNUSED(status); 2453 #endif 2454 } 2455 2456 #ifdef ENABLE_CLASSIC 2457 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 2458 // SSP Controller 2459 if (features[6] & (1 << 3)){ 2460 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 2461 } 2462 // eSCO 2463 if (features[3] & (1<<7)){ 2464 conn->remote_supported_features[0] |= 1; 2465 } 2466 // Extended features 2467 if (features[7] & (1<<7)){ 2468 conn->remote_supported_features[0] |= 2; 2469 } 2470 } 2471 2472 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 2473 // SSP Host 2474 if (features[0] & (1 << 0)){ 2475 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 2476 } 2477 // SC Host 2478 if (features[0] & (1 << 3)){ 2479 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 2480 } 2481 } 2482 2483 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 2484 // SC Controller 2485 if (features[1] & (1 << 0)){ 2486 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2487 } 2488 } 2489 2490 static void hci_handle_remote_features_received(hci_connection_t * conn){ 2491 conn->bonding_flags &= ~BONDING_REMOTE_FEATURES_QUERY_ACTIVE; 2492 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 2493 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 2494 if (conn->bonding_flags & BONDING_DEDICATED){ 2495 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2496 } 2497 } 2498 static bool hci_remote_sc_enabled(hci_connection_t * connection){ 2499 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2500 return (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 2501 } 2502 2503 #endif 2504 2505 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 2506 // handle BT initialization 2507 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2508 hci_initializing_event_handler(packet, size); 2509 } 2510 2511 // help with BT sleep 2512 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2513 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2514 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 2515 && (hci_event_command_complete_get_command_opcode(packet) == HCI_OPCODE_HCI_WRITE_SCAN_ENABLE)){ 2516 hci_initializing_next_state(); 2517 } 2518 } 2519 2520 #ifdef ENABLE_CLASSIC 2521 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2522 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 2523 conn->encryption_key_size = encryption_key_size; 2524 gap_security_level_t security_level = gap_security_level_for_connection(conn); 2525 2526 // trigger disconnect for dedicated bonding, skip emit security level as disconnect is pending 2527 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 2528 conn->bonding_flags &= ~BONDING_DEDICATED; 2529 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2530 conn->bonding_status = security_level == 0 ? ERROR_CODE_INSUFFICIENT_SECURITY : ERROR_CODE_SUCCESS; 2531 return; 2532 } 2533 2534 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) != 0) { 2535 conn->requested_security_level = LEVEL_0; 2536 hci_emit_security_level(conn->con_handle, security_level); 2537 return; 2538 } 2539 2540 // Request remote features if not already done 2541 hci_trigger_remote_features_for_connection(conn); 2542 2543 // Request Authentication if not already done 2544 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2545 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2546 } 2547 #endif 2548 2549 static void hci_store_local_supported_commands(const uint8_t * packet){ 2550 // create mapping table 2551 #define X(name, offset, bit) { offset, bit }, 2552 static struct { 2553 uint8_t byte_offset; 2554 uint8_t bit_position; 2555 } supported_hci_commands_map [] = { 2556 SUPPORTED_HCI_COMMANDS 2557 }; 2558 #undef X 2559 2560 // create names for debug purposes 2561 #ifdef ENABLE_LOG_DEBUG 2562 #define X(name, offset, bit) #name, 2563 static const char * command_names[] = { 2564 SUPPORTED_HCI_COMMANDS 2565 }; 2566 #undef X 2567 #endif 2568 2569 hci_stack->local_supported_commands = 0; 2570 const uint8_t * commands_map = &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1]; 2571 uint16_t i; 2572 for (i = 0 ; i < SUPPORTED_HCI_COMMANDS_COUNT ; i++){ 2573 if ((commands_map[supported_hci_commands_map[i].byte_offset] & (1 << supported_hci_commands_map[i].bit_position)) != 0){ 2574 #ifdef ENABLE_LOG_DEBUG 2575 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); 2576 #else 2577 log_info("Command 0x%02x supported %u/%u", i, supported_hci_commands_map[i].byte_offset, supported_hci_commands_map[i].bit_position); 2578 #endif 2579 hci_stack->local_supported_commands |= (1LU << i); 2580 } 2581 } 2582 log_info("Local supported commands summary %04x", hci_stack->local_supported_commands); 2583 } 2584 2585 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2586 UNUSED(size); 2587 2588 uint16_t manufacturer; 2589 #ifdef ENABLE_CLASSIC 2590 hci_con_handle_t handle; 2591 hci_connection_t * conn; 2592 #endif 2593 #if defined(ENABLE_CLASSIC) || (defined(ENABLE_BLE) && defined(ENABLE_LE_ISOCHRONOUS_STREAMS)) 2594 uint8_t status; 2595 #endif 2596 // get num cmd packets - limit to 1 to reduce complexity 2597 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2598 2599 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2600 switch (opcode){ 2601 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2602 if (packet[5]) break; 2603 // terminate, name 248 chars 2604 packet[6+248] = 0; 2605 log_info("local name: %s", &packet[6]); 2606 break; 2607 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2608 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2609 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2610 uint16_t acl_len = little_endian_read_16(packet, 6); 2611 uint16_t sco_len = packet[8]; 2612 2613 // determine usable ACL/SCO payload size 2614 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2615 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2616 2617 hci_stack->acl_packets_total_num = (uint8_t) little_endian_read_16(packet, 9); 2618 hci_stack->sco_packets_total_num = (uint8_t) little_endian_read_16(packet, 11); 2619 2620 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2621 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2622 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2623 } 2624 break; 2625 case HCI_OPCODE_HCI_READ_RSSI: 2626 if (packet[5] == ERROR_CODE_SUCCESS){ 2627 uint8_t event[5]; 2628 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2629 event[1] = 3; 2630 (void)memcpy(&event[2], &packet[6], 3); 2631 hci_emit_event(event, sizeof(event), 1); 2632 } 2633 break; 2634 #ifdef ENABLE_BLE 2635 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE_V2: 2636 hci_stack->le_iso_packets_length = little_endian_read_16(packet, 9); 2637 hci_stack->le_iso_packets_total_num = packet[11]; 2638 log_info("hci_le_read_buffer_size_v2: iso size %u, iso count %u", 2639 hci_stack->le_iso_packets_length, hci_stack->le_iso_packets_total_num); 2640 2641 /* fall through */ 2642 2643 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2644 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2645 hci_stack->le_acl_packets_total_num = packet[8]; 2646 // determine usable ACL payload size 2647 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2648 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2649 } 2650 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); 2651 break; 2652 #endif 2653 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2654 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2655 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2656 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2657 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); 2658 break; 2659 #endif 2660 #ifdef ENABLE_LE_CENTRAL 2661 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2662 hci_stack->le_whitelist_capacity = packet[6]; 2663 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2664 break; 2665 #endif 2666 #ifdef ENABLE_LE_PERIPHERAL 2667 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 2668 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_ADVERTISING_DATA_LENGTH: 2669 hci_stack->le_maximum_advertising_data_length = little_endian_read_16(packet, 6); 2670 break; 2671 case HCI_OPCODE_HCI_LE_SET_EXTENDED_ADVERTISING_PARAMETERS: 2672 if (hci_stack->le_advertising_set_in_current_command != 0) { 2673 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2674 hci_stack->le_advertising_set_in_current_command = 0; 2675 if (advertising_set == NULL) break; 2676 uint8_t adv_status = packet[6]; 2677 uint8_t tx_power = packet[7]; 2678 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 }; 2679 if (adv_status == 0){ 2680 advertising_set->state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 2681 } 2682 hci_emit_event(event, sizeof(event), 1); 2683 } 2684 break; 2685 case HCI_OPCODE_HCI_LE_REMOVE_ADVERTISING_SET: 2686 if (hci_stack->le_advertising_set_in_current_command != 0) { 2687 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(hci_stack->le_advertising_set_in_current_command); 2688 hci_stack->le_advertising_set_in_current_command = 0; 2689 if (advertising_set == NULL) break; 2690 uint8_t adv_status = packet[5]; 2691 uint8_t event[] = { HCI_EVENT_META_GAP, 3, GAP_SUBEVENT_ADVERTISING_SET_REMOVED, hci_stack->le_advertising_set_in_current_command, adv_status }; 2692 if (adv_status == 0){ 2693 btstack_linked_list_remove(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) advertising_set); 2694 } 2695 hci_emit_event(event, sizeof(event), 1); 2696 } 2697 break; 2698 #endif 2699 #endif 2700 case HCI_OPCODE_HCI_READ_BD_ADDR: 2701 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2702 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)); 2703 #ifdef ENABLE_CLASSIC 2704 if (hci_stack->link_key_db){ 2705 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2706 } 2707 #endif 2708 break; 2709 #ifdef ENABLE_CLASSIC 2710 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2711 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 2712 break; 2713 case HCI_OPCODE_HCI_PERIODIC_INQUIRY_MODE: 2714 status = hci_event_command_complete_get_return_parameters(packet)[0]; 2715 if (status == ERROR_CODE_SUCCESS) { 2716 hci_stack->inquiry_state = GAP_INQUIRY_STATE_PERIODIC; 2717 } else { 2718 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2719 } 2720 break; 2721 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2722 case HCI_OPCODE_HCI_EXIT_PERIODIC_INQUIRY_MODE: 2723 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2724 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2725 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2726 hci_emit_event(event, sizeof(event), 1); 2727 } 2728 break; 2729 #endif 2730 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2731 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2732 2733 #ifdef ENABLE_CLASSIC 2734 // determine usable ACL packet types based on host buffer size and supported features 2735 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2736 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2737 #endif 2738 // Classic/LE 2739 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2740 break; 2741 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2742 manufacturer = little_endian_read_16(packet, 10); 2743 // map Cypress to Broadcom 2744 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2745 log_info("Treat Cypress as Broadcom"); 2746 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2747 little_endian_store_16(packet, 10, manufacturer); 2748 } 2749 hci_stack->manufacturer = manufacturer; 2750 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2751 break; 2752 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2753 hci_store_local_supported_commands(packet); 2754 break; 2755 #ifdef ENABLE_CLASSIC 2756 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2757 if (packet[5]) return; 2758 hci_stack->synchronous_flow_control_enabled = 1; 2759 break; 2760 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2761 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2762 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2763 conn = hci_connection_for_handle(handle); 2764 if (conn != NULL) { 2765 uint8_t key_size = 0; 2766 if (status == 0){ 2767 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2768 log_info("Handle %04x key Size: %u", handle, key_size); 2769 } else { 2770 key_size = 1; 2771 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2772 } 2773 hci_handle_read_encryption_key_size_complete(conn, key_size); 2774 } 2775 break; 2776 // assert pairing complete event is emitted. 2777 // note: for SSP, Simple Pairing Complete Event is sufficient, but we want to be more robust 2778 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 2779 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 2780 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 2781 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 2782 // lookup connection by gap pairing addr 2783 conn = hci_connection_for_bd_addr_and_type(hci_stack->gap_pairing_addr, BD_ADDR_TYPE_ACL); 2784 if (conn == NULL) break; 2785 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2786 break; 2787 2788 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2789 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2790 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2791 uint8_t event[67]; 2792 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2793 event[1] = 65; 2794 (void)memset(&event[2], 0, 65); 2795 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2796 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2797 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2798 event[2] = 3; 2799 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2800 } else { 2801 event[2] = 1; 2802 } 2803 } 2804 hci_emit_event(event, sizeof(event), 0); 2805 break; 2806 } 2807 2808 // note: only needed if user does not provide OOB data 2809 case HCI_OPCODE_HCI_REMOTE_OOB_DATA_REQUEST_NEGATIVE_REPLY: 2810 conn = hci_connection_for_handle(hci_stack->classic_oob_con_handle); 2811 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 2812 if (conn == NULL) break; 2813 hci_pairing_complete(conn, ERROR_CODE_AUTHENTICATION_FAILURE); 2814 break; 2815 #endif 2816 #endif 2817 #ifdef ENABLE_BLE 2818 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2819 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2820 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2821 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2822 if (status != ERROR_CODE_SUCCESS){ 2823 hci_iso_stream_requested_finalize(0xff); 2824 } 2825 break; 2826 case HCI_OPCODE_HCI_LE_SETUP_ISO_DATA_PATH: { 2827 // lookup BIG by state 2828 btstack_linked_list_iterator_t it; 2829 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 2830 while (btstack_linked_list_iterator_has_next(&it)) { 2831 le_audio_big_t *big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 2832 if (big->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2833 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2834 if (status == ERROR_CODE_SUCCESS){ 2835 big->state_vars.next_bis++; 2836 if (big->state_vars.next_bis == big->num_bis){ 2837 big->state = LE_AUDIO_BIG_STATE_ACTIVE; 2838 hci_emit_big_created(big, ERROR_CODE_SUCCESS); 2839 } else { 2840 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2841 } 2842 } else { 2843 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2844 big->state_vars.status = status; 2845 } 2846 return; 2847 } 2848 } 2849 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2850 while (btstack_linked_list_iterator_has_next(&it)) { 2851 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2852 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH){ 2853 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2854 if (status == ERROR_CODE_SUCCESS){ 2855 big_sync->state_vars.next_bis++; 2856 if (big_sync->state_vars.next_bis == big_sync->num_bis){ 2857 big_sync->state = LE_AUDIO_BIG_STATE_ACTIVE; 2858 hci_emit_big_sync_created(big_sync, ERROR_CODE_SUCCESS); 2859 } else { 2860 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 2861 } 2862 } else { 2863 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED; 2864 big_sync->state_vars.status = status; 2865 } 2866 return; 2867 } 2868 } 2869 break; 2870 } 2871 case HCI_OPCODE_HCI_LE_BIG_TERMINATE_SYNC: { 2872 // lookup BIG by state 2873 btstack_linked_list_iterator_t it; 2874 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 2875 while (btstack_linked_list_iterator_has_next(&it)) { 2876 le_audio_big_sync_t *big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 2877 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED){ 2878 btstack_linked_list_iterator_remove(&it); 2879 switch (big_sync->state){ 2880 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 2881 hci_emit_big_sync_created(big_sync, big_sync->state_vars.status); 2882 break; 2883 default: 2884 hci_emit_big_sync_stopped(big_sync); 2885 break; 2886 } 2887 return; 2888 } 2889 } 2890 break; 2891 } 2892 #endif 2893 #endif 2894 default: 2895 break; 2896 } 2897 } 2898 2899 static void handle_command_status_event(uint8_t * packet, uint16_t size) { 2900 UNUSED(size); 2901 2902 // get num cmd packets - limit to 1 to reduce complexity 2903 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2904 2905 // get opcode and command status 2906 uint16_t opcode = hci_event_command_status_get_command_opcode(packet); 2907 2908 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) || defined(ENABLE_LE_ISOCHRONOUS_STREAMS) 2909 uint8_t status = hci_event_command_status_get_status(packet); 2910 #endif 2911 2912 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2913 bd_addr_type_t addr_type; 2914 #endif 2915 2916 switch (opcode){ 2917 #ifdef ENABLE_CLASSIC 2918 case HCI_OPCODE_HCI_CREATE_CONNECTION: 2919 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 2920 #endif 2921 #ifdef ENABLE_LE_CENTRAL 2922 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 2923 #endif 2924 #if defined(ENABLE_CLASSIC) || defined(ENABLE_LE_CENTRAL) 2925 addr_type = hci_stack->outgoing_addr_type; 2926 2927 // reset outgoing address info 2928 memset(hci_stack->outgoing_addr, 0, 6); 2929 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2930 2931 // on error 2932 if (status != ERROR_CODE_SUCCESS){ 2933 #ifdef ENABLE_LE_CENTRAL 2934 if (hci_is_le_connection_type(addr_type)){ 2935 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2936 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2937 } 2938 #endif 2939 // error => outgoing connection failed 2940 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2941 if (conn != NULL){ 2942 hci_handle_connection_failed(conn, status); 2943 } 2944 } 2945 break; 2946 #endif 2947 #ifdef ENABLE_CLASSIC 2948 case HCI_OPCODE_HCI_INQUIRY: 2949 if (status == ERROR_CODE_SUCCESS) { 2950 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 2951 } else { 2952 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2953 } 2954 break; 2955 #endif 2956 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 2957 case HCI_OPCODE_HCI_LE_CREATE_CIS: 2958 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 2959 if (status == ERROR_CODE_SUCCESS){ 2960 hci_iso_stream_requested_confirm(0xff); 2961 } else { 2962 hci_iso_stream_requested_finalize(0xff); 2963 } 2964 break; 2965 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 2966 default: 2967 break; 2968 } 2969 } 2970 2971 #ifdef ENABLE_BLE 2972 static void event_handle_le_connection_complete(const uint8_t * packet){ 2973 bd_addr_t addr; 2974 bd_addr_type_t addr_type; 2975 hci_connection_t * conn; 2976 2977 // Connection management 2978 reverse_bd_addr(&packet[8], addr); 2979 addr_type = (bd_addr_type_t)packet[7]; 2980 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2981 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2982 2983 #ifdef ENABLE_LE_CENTRAL 2984 // handle error: error is reported only to the initiator -> outgoing connection 2985 if (packet[3]){ 2986 2987 // handle cancelled outgoing connection 2988 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2989 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2990 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2991 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2992 // reset state 2993 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2994 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2995 // get outgoing connection conn struct for direct connect 2996 conn = gap_get_outgoing_connection(); 2997 } 2998 2999 // outgoing le connection establishment is done 3000 if (conn){ 3001 // remove entry 3002 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 3003 btstack_memory_hci_connection_free( conn ); 3004 } 3005 return; 3006 } 3007 #endif 3008 3009 // on success, both hosts receive connection complete event 3010 if (packet[6] == HCI_ROLE_MASTER){ 3011 #ifdef ENABLE_LE_CENTRAL 3012 // if we're master on an le connection, it was an outgoing connection and we're done with it 3013 // note: no hci_connection_t object exists yet for connect with whitelist 3014 if (hci_is_le_connection_type(addr_type)){ 3015 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3016 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3017 } 3018 #endif 3019 } else { 3020 #ifdef ENABLE_LE_PERIPHERAL 3021 // if we're slave, it was an incoming connection, advertisements have stopped 3022 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 3023 #endif 3024 } 3025 3026 // LE connections are auto-accepted, so just create a connection if there isn't one already 3027 if (!conn){ 3028 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3029 } 3030 3031 // no memory, sorry. 3032 if (!conn){ 3033 return; 3034 } 3035 3036 conn->state = OPEN; 3037 conn->role = packet[6]; 3038 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 3039 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 3040 3041 #ifdef ENABLE_LE_PERIPHERAL 3042 if (packet[6] == HCI_ROLE_SLAVE){ 3043 hci_update_advertisements_enabled_for_current_roles(); 3044 } 3045 #endif 3046 3047 // init unenhanced att bearer mtu 3048 conn->att_connection.mtu = ATT_DEFAULT_MTU; 3049 conn->att_connection.mtu_exchanged = false; 3050 3051 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 3052 3053 // restart timer 3054 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3055 // btstack_run_loop_add_timer(&conn->timeout); 3056 3057 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3058 3059 hci_emit_nr_connections_changed(); 3060 } 3061 #endif 3062 3063 #ifdef ENABLE_CLASSIC 3064 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){ 3065 if (io_cap_local == SSP_IO_CAPABILITY_UNKNOWN) return false; 3066 // LEVEL_4 is tested by l2cap 3067 // LEVEL 3 requires MITM protection -> check io capabilities if Authenticated is possible 3068 // @see: Core Spec v5.3, Vol 3, Part C, Table 5.7 3069 if (level >= LEVEL_3){ 3070 // MITM not possible without keyboard or display 3071 if (io_cap_remote >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3072 if (io_cap_local >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT) return false; 3073 3074 // MITM possible if one side has keyboard and the other has keyboard or display 3075 if (io_cap_remote == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3076 if (io_cap_local == SSP_IO_CAPABILITY_KEYBOARD_ONLY) return true; 3077 3078 // MITM not possible if one side has only display and other side has no keyboard 3079 if (io_cap_remote == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3080 if (io_cap_local == SSP_IO_CAPABILITY_DISPLAY_ONLY) return false; 3081 } 3082 // LEVEL 2 requires SSP, which is a given 3083 return true; 3084 } 3085 3086 static bool btstack_is_null(uint8_t * data, uint16_t size){ 3087 uint16_t i; 3088 for (i=0; i < size ; i++){ 3089 if (data[i] != 0) { 3090 return false; 3091 } 3092 } 3093 return true; 3094 } 3095 3096 static void hci_ssp_assess_security_on_io_cap_request(hci_connection_t * conn){ 3097 // get requested security level 3098 gap_security_level_t requested_security_level = conn->requested_security_level; 3099 if (hci_stack->gap_secure_connections_only_mode){ 3100 requested_security_level = LEVEL_4; 3101 } 3102 3103 // assess security: LEVEL 4 requires SC 3104 // skip this preliminary test if remote features are not available yet to work around potential issue in ESP32 controller 3105 if ((requested_security_level == LEVEL_4) && 3106 ((conn->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0) && 3107 !hci_remote_sc_enabled(conn)){ 3108 log_info("Level 4 required, but SC not supported -> abort"); 3109 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3110 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3111 return; 3112 } 3113 3114 // assess security based on io capabilities 3115 if (conn->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 3116 // responder: fully validate io caps of both sides as well as OOB data 3117 bool security_possible = false; 3118 security_possible = hci_ssp_security_level_possible_for_io_cap(requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io); 3119 3120 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3121 // We assume that both Controller can reach LEVEL 4, if one side has received P-192 and the other has received P-256, 3122 // so we merge the OOB data availability 3123 uint8_t have_oob_data = conn->io_cap_response_oob_data; 3124 if (conn->classic_oob_c_192 != NULL){ 3125 have_oob_data |= 1; 3126 } 3127 if (conn->classic_oob_c_256 != NULL){ 3128 have_oob_data |= 2; 3129 } 3130 // for up to Level 3, either P-192 as well as P-256 will do 3131 // 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 3132 // if remote does not SC, we should not receive P-256 data either 3133 if ((requested_security_level <= LEVEL_3) && (have_oob_data != 0)){ 3134 security_possible = true; 3135 } 3136 // for Level 4, P-256 is needed 3137 if ((requested_security_level == LEVEL_4 && ((have_oob_data & 2) != 0))){ 3138 security_possible = true; 3139 } 3140 #endif 3141 3142 if (security_possible == false){ 3143 log_info("IOCap/OOB insufficient for level %u -> abort", requested_security_level); 3144 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3145 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3146 return; 3147 } 3148 } else { 3149 // initiator: remote io cap not yet, only check if we have ability for MITM protection if requested and OOB is not supported 3150 #ifndef ENABLE_CLASSIC_PAIRING_OOB 3151 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3152 if ((conn->requested_security_level >= LEVEL_3) && (hci_stack->ssp_io_capability >= SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT)){ 3153 log_info("Level 3+ required, but no input/output -> abort"); 3154 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3155 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3156 return; 3157 } 3158 #endif 3159 #endif 3160 } 3161 3162 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 3163 if (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN){ 3164 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 3165 } else { 3166 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 3167 } 3168 #endif 3169 } 3170 3171 #endif 3172 3173 static void event_handler(uint8_t *packet, uint16_t size){ 3174 3175 uint16_t event_length = packet[1]; 3176 3177 // assert packet is complete 3178 if (size != (event_length + 2u)){ 3179 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 3180 return; 3181 } 3182 3183 hci_con_handle_t handle; 3184 hci_connection_t * conn; 3185 int i; 3186 3187 #ifdef ENABLE_CLASSIC 3188 hci_link_type_t link_type; 3189 bd_addr_t addr; 3190 bd_addr_type_t addr_type; 3191 #endif 3192 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3193 hci_iso_stream_t * iso_stream; 3194 le_audio_big_t * big; 3195 le_audio_big_sync_t * big_sync; 3196 #endif 3197 3198 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 3199 3200 switch (hci_event_packet_get_type(packet)) { 3201 3202 case HCI_EVENT_COMMAND_COMPLETE: 3203 handle_command_complete_event(packet, size); 3204 break; 3205 3206 case HCI_EVENT_COMMAND_STATUS: 3207 handle_command_status_event(packet, size); 3208 break; 3209 3210 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 3211 if (size < 3) return; 3212 uint16_t num_handles = packet[2]; 3213 if (size != (3u + num_handles * 4u)) return; 3214 uint16_t offset = 3; 3215 for (i=0; i<num_handles;i++){ 3216 handle = little_endian_read_16(packet, offset) & 0x0fffu; 3217 offset += 2u; 3218 uint16_t num_packets = little_endian_read_16(packet, offset); 3219 offset += 2u; 3220 3221 conn = hci_connection_for_handle(handle); 3222 if (conn != NULL) { 3223 3224 if (conn->num_packets_sent >= num_packets) { 3225 conn->num_packets_sent -= num_packets; 3226 } else { 3227 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3228 conn->num_packets_sent = 0; 3229 } 3230 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 3231 } 3232 3233 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 3234 hci_controller_dump_packets(); 3235 #endif 3236 3237 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3238 if (conn == NULL){ 3239 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(handle); 3240 if (iso_stream != NULL){ 3241 if (iso_stream->num_packets_sent >= num_packets) { 3242 iso_stream->num_packets_sent -= num_packets; 3243 } else { 3244 log_error("hci_number_completed_packets, more packet slots freed then sent."); 3245 iso_stream->num_packets_sent = 0; 3246 } 3247 log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", 3248 num_packets, handle, iso_stream->num_packets_sent); 3249 } 3250 hci_iso_notify_can_send_now(); 3251 } 3252 #endif 3253 3254 #ifdef ENABLE_CLASSIC 3255 // For SCO, we do the can_send_now_check here 3256 hci_notify_if_sco_can_send_now(); 3257 #endif 3258 } 3259 break; 3260 } 3261 3262 #ifdef ENABLE_CLASSIC 3263 case HCI_EVENT_FLUSH_OCCURRED: 3264 // flush occurs only if automatic flush has been enabled by gap_enable_link_watchdog() 3265 handle = hci_event_flush_occurred_get_handle(packet); 3266 conn = hci_connection_for_handle(handle); 3267 if (conn) { 3268 log_info("Flush occurred, disconnect 0x%04x", handle); 3269 conn->state = SEND_DISCONNECT; 3270 } 3271 break; 3272 3273 case HCI_EVENT_INQUIRY_COMPLETE: 3274 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 3275 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 3276 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 3277 hci_emit_event(event, sizeof(event), 1); 3278 } 3279 break; 3280 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 3281 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 3282 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 3283 } 3284 break; 3285 case HCI_EVENT_CONNECTION_REQUEST: 3286 reverse_bd_addr(&packet[2], addr); 3287 link_type = (hci_link_type_t) packet[11]; 3288 3289 // CVE-2020-26555: reject incoming connection from device with same BD ADDR 3290 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0){ 3291 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 3292 bd_addr_copy(hci_stack->decline_addr, addr); 3293 break; 3294 } 3295 3296 if (hci_stack->gap_classic_accept_callback != NULL){ 3297 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 3298 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS; 3299 bd_addr_copy(hci_stack->decline_addr, addr); 3300 break; 3301 } 3302 } 3303 3304 // TODO: eval COD 8-10 3305 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 3306 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 3307 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3308 if (!conn) { 3309 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 3310 } 3311 if (!conn) { 3312 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 3313 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 3314 bd_addr_copy(hci_stack->decline_addr, addr); 3315 hci_run(); 3316 // avoid event to higher layer 3317 return; 3318 } 3319 conn->role = HCI_ROLE_SLAVE; 3320 conn->state = RECEIVED_CONNECTION_REQUEST; 3321 // store info about eSCO 3322 if (link_type == HCI_LINK_TYPE_ESCO){ 3323 conn->remote_supported_features[0] |= 1; 3324 } 3325 hci_run(); 3326 break; 3327 3328 case HCI_EVENT_CONNECTION_COMPLETE: 3329 // Connection management 3330 reverse_bd_addr(&packet[5], addr); 3331 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 3332 addr_type = BD_ADDR_TYPE_ACL; 3333 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3334 if (conn) { 3335 if (!packet[2]){ 3336 conn->state = OPEN; 3337 conn->con_handle = little_endian_read_16(packet, 3); 3338 3339 // trigger write supervision timeout if we're master 3340 if ((hci_stack->link_supervision_timeout != HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT) && (conn->role == HCI_ROLE_MASTER)){ 3341 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 3342 } 3343 3344 // trigger write automatic flush timeout 3345 if (hci_stack->automatic_flush_timeout != 0){ 3346 conn->gap_connection_tasks |= GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 3347 } 3348 3349 // restart timer 3350 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 3351 btstack_run_loop_add_timer(&conn->timeout); 3352 3353 // trigger remote features for dedicated bonding 3354 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3355 hci_trigger_remote_features_for_connection(conn); 3356 } 3357 3358 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 3359 3360 hci_emit_nr_connections_changed(); 3361 } else { 3362 // connection failed 3363 hci_handle_connection_failed(conn, packet[2]); 3364 } 3365 } 3366 break; 3367 3368 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 3369 reverse_bd_addr(&packet[5], addr); 3370 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3371 log_info("Synchronous Connection Complete for %p (status=%u) %s", conn, packet[2], bd_addr_to_str(addr)); 3372 if (packet[2]){ 3373 // connection failed 3374 if (conn){ 3375 hci_handle_connection_failed(conn, packet[2]); 3376 } 3377 break; 3378 } 3379 if (!conn) { 3380 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 3381 } 3382 if (!conn) { 3383 break; 3384 } 3385 conn->state = OPEN; 3386 conn->con_handle = little_endian_read_16(packet, 3); 3387 3388 #ifdef ENABLE_SCO_OVER_HCI 3389 // update SCO 3390 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 3391 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 3392 } 3393 // trigger can send now 3394 if (hci_have_usb_transport()){ 3395 hci_stack->sco_can_send_now = true; 3396 } 3397 #endif 3398 #ifdef HAVE_SCO_TRANSPORT 3399 // configure sco transport 3400 if (hci_stack->sco_transport != NULL){ 3401 sco_format_t sco_format = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? SCO_FORMAT_8_BIT : SCO_FORMAT_16_BIT; 3402 hci_stack->sco_transport->open(conn->con_handle, sco_format); 3403 } 3404 #endif 3405 break; 3406 3407 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 3408 handle = little_endian_read_16(packet, 3); 3409 conn = hci_connection_for_handle(handle); 3410 if (!conn) break; 3411 if (!packet[2]){ 3412 const uint8_t * features = &packet[5]; 3413 hci_handle_remote_features_page_0(conn, features); 3414 3415 // read extended features if possible 3416 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_REMOTE_EXTENDED_FEATURES) 3417 && ((conn->remote_supported_features[0] & 2) != 0)) { 3418 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 3419 break; 3420 } 3421 } 3422 hci_handle_remote_features_received(conn); 3423 break; 3424 3425 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 3426 handle = little_endian_read_16(packet, 3); 3427 conn = hci_connection_for_handle(handle); 3428 if (!conn) break; 3429 // status = ok, page = 1 3430 if (!packet[2]) { 3431 uint8_t page_number = packet[5]; 3432 uint8_t maximum_page_number = packet[6]; 3433 const uint8_t * features = &packet[7]; 3434 bool done = false; 3435 switch (page_number){ 3436 case 1: 3437 hci_handle_remote_features_page_1(conn, features); 3438 if (maximum_page_number >= 2){ 3439 // get Secure Connections (Controller) from Page 2 if available 3440 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 3441 } else { 3442 // otherwise, assume SC (Controller) == SC (Host) 3443 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 3444 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 3445 } 3446 done = true; 3447 } 3448 break; 3449 case 2: 3450 hci_handle_remote_features_page_2(conn, features); 3451 done = true; 3452 break; 3453 default: 3454 break; 3455 } 3456 if (!done) break; 3457 } 3458 hci_handle_remote_features_received(conn); 3459 break; 3460 3461 case HCI_EVENT_LINK_KEY_REQUEST: 3462 #ifndef ENABLE_EXPLICIT_LINK_KEY_REPLY 3463 hci_event_link_key_request_get_bd_addr(packet, addr); 3464 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3465 if (!conn) break; 3466 3467 // lookup link key in db if not cached 3468 if ((conn->link_key_type == INVALID_LINK_KEY) && (hci_stack->link_key_db != NULL)){ 3469 hci_stack->link_key_db->get_link_key(conn->address, conn->link_key, &conn->link_key_type); 3470 } 3471 3472 // response sent by hci_run() 3473 conn->authentication_flags |= AUTH_FLAG_HANDLE_LINK_KEY_REQUEST; 3474 #endif 3475 break; 3476 3477 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 3478 hci_event_link_key_request_get_bd_addr(packet, addr); 3479 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3480 if (!conn) break; 3481 3482 hci_pairing_complete(conn, ERROR_CODE_SUCCESS); 3483 3484 // CVE-2020-26555: ignore NULL link key 3485 // default link_key_type = INVALID_LINK_KEY asserts that NULL key won't be used for encryption 3486 if (btstack_is_null(&packet[8], 16)) break; 3487 3488 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 3489 // Change Connection Encryption keeps link key type 3490 if (link_key_type != CHANGED_COMBINATION_KEY){ 3491 conn->link_key_type = link_key_type; 3492 } 3493 3494 // cache link key. link keys stored in little-endian format for legacy reasons 3495 memcpy(&conn->link_key, &packet[8], 16); 3496 3497 // only store link key: 3498 // - if bondable enabled 3499 if (hci_stack->bondable == false) break; 3500 // - if security level sufficient 3501 if (gap_security_level_for_link_key_type(link_key_type) < conn->requested_security_level) break; 3502 // - for SSP, also check if remote side requested bonding as well 3503 if (conn->link_key_type != COMBINATION_KEY){ 3504 bool remote_bonding = conn->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 3505 if (!remote_bonding){ 3506 break; 3507 } 3508 } 3509 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 3510 break; 3511 } 3512 3513 case HCI_EVENT_PIN_CODE_REQUEST: 3514 hci_event_pin_code_request_get_bd_addr(packet, addr); 3515 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3516 if (!conn) break; 3517 3518 hci_pairing_started(conn, false); 3519 // abort pairing if: non-bondable mode (pin code request is not forwarded to app) 3520 if (!hci_stack->bondable ){ 3521 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3522 hci_pairing_complete(conn, ERROR_CODE_PAIRING_NOT_ALLOWED); 3523 hci_run(); 3524 return; 3525 } 3526 // abort pairing if: LEVEL_4 required (pin code request is not forwarded to app) 3527 if ((hci_stack->gap_secure_connections_only_mode) || (conn->requested_security_level == LEVEL_4)){ 3528 log_info("Level 4 required, but SC not supported -> abort"); 3529 conn->authentication_flags |= AUTH_FLAG_DENY_PIN_CODE_REQUEST; 3530 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3531 hci_run(); 3532 return; 3533 } 3534 break; 3535 3536 case HCI_EVENT_IO_CAPABILITY_RESPONSE: 3537 hci_event_io_capability_response_get_bd_addr(packet, addr); 3538 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3539 if (!conn) break; 3540 3541 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE); 3542 hci_pairing_started(conn, true); 3543 conn->io_cap_response_auth_req = hci_event_io_capability_response_get_authentication_requirements(packet); 3544 conn->io_cap_response_io = hci_event_io_capability_response_get_io_capability(packet); 3545 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3546 conn->io_cap_response_oob_data = hci_event_io_capability_response_get_oob_data_present(packet); 3547 #endif 3548 break; 3549 3550 case HCI_EVENT_IO_CAPABILITY_REQUEST: 3551 hci_event_io_capability_response_get_bd_addr(packet, addr); 3552 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3553 if (!conn) break; 3554 3555 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 3556 hci_connection_timestamp(conn); 3557 hci_pairing_started(conn, true); 3558 break; 3559 3560 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3561 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 3562 hci_event_remote_oob_data_request_get_bd_addr(packet, addr); 3563 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3564 if (!conn) break; 3565 3566 hci_connection_timestamp(conn); 3567 3568 hci_pairing_started(conn, true); 3569 3570 connectionSetAuthenticationFlags(conn, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 3571 break; 3572 #endif 3573 3574 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 3575 hci_event_user_confirmation_request_get_bd_addr(packet, addr); 3576 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3577 if (!conn) break; 3578 if (hci_ssp_security_level_possible_for_io_cap(conn->requested_security_level, hci_stack->ssp_io_capability, conn->io_cap_response_io)) { 3579 if (hci_stack->ssp_auto_accept){ 3580 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 3581 }; 3582 } else { 3583 hci_pairing_complete(conn, ERROR_CODE_INSUFFICIENT_SECURITY); 3584 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 3585 // don't forward event to app 3586 hci_run(); 3587 return; 3588 } 3589 break; 3590 3591 case HCI_EVENT_USER_PASSKEY_REQUEST: 3592 // Pairing using Passkey results in MITM protection. If Level 4 is required, support for SC is validated on IO Cap Request 3593 if (hci_stack->ssp_auto_accept){ 3594 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 3595 }; 3596 break; 3597 3598 case HCI_EVENT_MODE_CHANGE: 3599 handle = hci_event_mode_change_get_handle(packet); 3600 conn = hci_connection_for_handle(handle); 3601 if (!conn) break; 3602 conn->connection_mode = hci_event_mode_change_get_mode(packet); 3603 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 3604 break; 3605 #endif 3606 3607 case HCI_EVENT_ENCRYPTION_CHANGE: 3608 case HCI_EVENT_ENCRYPTION_CHANGE_V2: 3609 handle = hci_event_encryption_change_get_connection_handle(packet); 3610 conn = hci_connection_for_handle(handle); 3611 if (!conn) break; 3612 if (hci_event_encryption_change_get_status(packet) == 0u) { 3613 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 3614 if (encryption_enabled){ 3615 if (hci_is_le_connection(conn)){ 3616 // For LE, we accept connection as encrypted 3617 conn->authentication_flags |= AUTH_FLAG_CONNECTION_ENCRYPTED; 3618 } 3619 #ifdef ENABLE_CLASSIC 3620 else { 3621 3622 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 3623 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type); 3624 bool connected_uses_aes_ccm = encryption_enabled == 2; 3625 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 3626 log_info("SC during pairing, but only E0 now -> abort"); 3627 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 3628 break; 3629 } 3630 3631 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 3632 if (connected_uses_aes_ccm){ 3633 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3634 } 3635 3636 #ifdef ENABLE_TESTING_SUPPORT 3637 // work around for issue with PTS dongle 3638 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3639 #endif 3640 // validate encryption key size 3641 if (hci_event_packet_get_type(packet) == HCI_EVENT_ENCRYPTION_CHANGE_V2) { 3642 uint8_t encryption_key_size = hci_event_encryption_change_v2_get_encryption_key_size(packet); 3643 // already got encryption key size 3644 hci_handle_read_encryption_key_size_complete(conn, encryption_key_size); 3645 } else { 3646 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_ENCRYPTION_KEY_SIZE)) { 3647 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 3648 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 3649 } else { 3650 // if not, pretend everything is perfect 3651 hci_handle_read_encryption_key_size_complete(conn, 16); 3652 } 3653 } 3654 } 3655 #endif 3656 } else { 3657 conn->authentication_flags &= ~AUTH_FLAG_CONNECTION_ENCRYPTED; 3658 } 3659 } else { 3660 uint8_t status = hci_event_encryption_change_get_status(packet); 3661 if ((conn->bonding_flags & BONDING_DEDICATED) != 0){ 3662 conn->bonding_flags &= ~BONDING_DEDICATED; 3663 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 3664 conn->bonding_status = status; 3665 } 3666 } 3667 3668 break; 3669 3670 #ifdef ENABLE_CLASSIC 3671 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 3672 handle = hci_event_authentication_complete_get_connection_handle(packet); 3673 conn = hci_connection_for_handle(handle); 3674 if (!conn) break; 3675 3676 // clear authentication active flag 3677 conn->bonding_flags &= ~BONDING_SENT_AUTHENTICATE_REQUEST; 3678 hci_pairing_complete(conn, hci_event_authentication_complete_get_status(packet)); 3679 3680 // authenticated only if auth status == 0 3681 if (hci_event_authentication_complete_get_status(packet) == 0){ 3682 // authenticated 3683 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3684 3685 // If not already encrypted, start encryption 3686 if ((conn->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0){ 3687 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 3688 break; 3689 } 3690 } 3691 3692 // emit updated security level 3693 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 3694 break; 3695 3696 case HCI_EVENT_SIMPLE_PAIRING_COMPLETE: 3697 hci_event_simple_pairing_complete_get_bd_addr(packet, addr); 3698 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 3699 if (!conn) break; 3700 3701 // treat successfully paired connection as authenticated 3702 if (hci_event_simple_pairing_complete_get_status(packet) == ERROR_CODE_SUCCESS){ 3703 conn->authentication_flags |= AUTH_FLAG_CONNECTION_AUTHENTICATED; 3704 } 3705 3706 hci_pairing_complete(conn, hci_event_simple_pairing_complete_get_status(packet)); 3707 break; 3708 #endif 3709 3710 // HCI_EVENT_DISCONNECTION_COMPLETE 3711 // has been split, to first notify stack before shutting connection down 3712 // see end of function, too. 3713 case HCI_EVENT_DISCONNECTION_COMPLETE: 3714 if (packet[2]) break; // status != 0 3715 handle = little_endian_read_16(packet, 3); 3716 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 3717 if (hci_stack->acl_fragmentation_total_size > 0u) { 3718 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3719 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 3720 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 3721 hci_stack->acl_fragmentation_total_size = 0; 3722 hci_stack->acl_fragmentation_pos = 0; 3723 if (release_buffer){ 3724 hci_release_packet_buffer(); 3725 } 3726 } 3727 } 3728 3729 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3730 // drop outgoing ISO fragments if it is for closed connection and release buffer if tx not active 3731 if (hci_stack->iso_fragmentation_total_size > 0u) { 3732 if (handle == READ_ISO_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 3733 int release_buffer = hci_stack->iso_fragmentation_tx_active == 0u; 3734 log_info("drop fragmented ISO data for closed connection, release buffer %u", release_buffer); 3735 hci_stack->iso_fragmentation_total_size = 0; 3736 hci_stack->iso_fragmentation_pos = 0; 3737 if (release_buffer){ 3738 hci_release_packet_buffer(); 3739 } 3740 } 3741 } 3742 3743 // finalize iso stream if handle matches 3744 iso_stream = hci_iso_stream_for_con_handle(handle); 3745 if (iso_stream != NULL){ 3746 hci_iso_stream_finalize(iso_stream); 3747 break; 3748 } 3749 #endif 3750 3751 conn = hci_connection_for_handle(handle); 3752 if (!conn) break; 3753 #ifdef ENABLE_CLASSIC 3754 // pairing failed if it was ongoing 3755 hci_pairing_complete(conn, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 3756 #endif 3757 3758 // emit dedicatd bonding event 3759 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 3760 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 3761 } 3762 3763 // mark connection for shutdown, stop timers, reset state 3764 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 3765 hci_connection_stop_timer(conn); 3766 hci_connection_init(conn); 3767 3768 #ifdef ENABLE_BLE 3769 #ifdef ENABLE_LE_PERIPHERAL 3770 // re-enable advertisements for le connections if active 3771 if (hci_is_le_connection(conn)){ 3772 hci_update_advertisements_enabled_for_current_roles(); 3773 } 3774 #endif 3775 #endif 3776 break; 3777 3778 case HCI_EVENT_HARDWARE_ERROR: 3779 log_error("Hardware Error: 0x%02x", packet[2]); 3780 if (hci_stack->hardware_error_callback){ 3781 (*hci_stack->hardware_error_callback)(packet[2]); 3782 } else { 3783 // if no special requests, just reboot stack 3784 hci_power_control_off(); 3785 hci_power_control_on(); 3786 } 3787 break; 3788 3789 #ifdef ENABLE_CLASSIC 3790 case HCI_EVENT_ROLE_CHANGE: 3791 if (packet[2]) break; // status != 0 3792 reverse_bd_addr(&packet[3], addr); 3793 addr_type = BD_ADDR_TYPE_ACL; 3794 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 3795 if (!conn) break; 3796 conn->role = packet[9]; 3797 break; 3798 #endif 3799 3800 case HCI_EVENT_TRANSPORT_PACKET_SENT: 3801 // release packet buffer only for asynchronous transport and if there are not further fragments 3802 if (hci_transport_synchronous()) { 3803 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 3804 return; // instead of break: to avoid re-entering hci_run() 3805 } 3806 hci_stack->acl_fragmentation_tx_active = 0; 3807 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3808 hci_stack->iso_fragmentation_tx_active = 0; 3809 if (hci_stack->iso_fragmentation_total_size) break; 3810 #endif 3811 if (hci_stack->acl_fragmentation_total_size) break; 3812 hci_release_packet_buffer(); 3813 3814 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3815 hci_iso_notify_can_send_now(); 3816 #endif 3817 // L2CAP receives this event via the hci_emit_event below 3818 3819 #ifdef ENABLE_CLASSIC 3820 // For SCO, we do the can_send_now_check here 3821 hci_notify_if_sco_can_send_now(); 3822 #endif 3823 break; 3824 3825 #ifdef ENABLE_CLASSIC 3826 case HCI_EVENT_SCO_CAN_SEND_NOW: 3827 // For SCO, we do the can_send_now_check here 3828 hci_stack->sco_can_send_now = true; 3829 hci_notify_if_sco_can_send_now(); 3830 return; 3831 3832 // explode inquriy results for easier consumption 3833 case HCI_EVENT_INQUIRY_RESULT: 3834 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 3835 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 3836 gap_inquiry_explode(packet, size); 3837 break; 3838 #endif 3839 3840 #ifdef ENABLE_BLE 3841 case HCI_EVENT_LE_META: 3842 switch (packet[2]){ 3843 #ifdef ENABLE_LE_CENTRAL 3844 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 3845 if (!hci_stack->le_scanning_enabled) break; 3846 le_handle_advertisement_report(packet, size); 3847 break; 3848 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 3849 case HCI_SUBEVENT_LE_EXTENDED_ADVERTISING_REPORT: 3850 if (!hci_stack->le_scanning_enabled) break; 3851 le_handle_extended_advertisement_report(packet, size); 3852 break; 3853 #endif 3854 #endif 3855 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 3856 event_handle_le_connection_complete(packet); 3857 break; 3858 3859 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 3860 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 3861 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 3862 conn = hci_connection_for_handle(handle); 3863 if (!conn) break; 3864 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 3865 break; 3866 3867 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 3868 // connection 3869 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 3870 conn = hci_connection_for_handle(handle); 3871 if (conn) { 3872 // read arguments 3873 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 3874 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 3875 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 3876 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 3877 3878 // validate against current connection parameter range 3879 le_connection_parameter_range_t existing_range; 3880 gap_get_connection_parameter_range(&existing_range); 3881 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 3882 if (update_parameter){ 3883 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 3884 conn->le_conn_interval_min = le_conn_interval_min; 3885 conn->le_conn_interval_max = le_conn_interval_max; 3886 conn->le_conn_latency = le_conn_latency; 3887 conn->le_supervision_timeout = le_supervision_timeout; 3888 } else { 3889 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 3890 } 3891 } 3892 break; 3893 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 3894 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 3895 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 3896 conn = hci_connection_for_handle(handle); 3897 if (conn) { 3898 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 3899 } 3900 break; 3901 #endif 3902 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 3903 case HCI_SUBEVENT_LE_CIS_ESTABLISHED: 3904 handle = hci_subevent_le_cis_established_get_connection_handle(packet); 3905 iso_stream = hci_iso_stream_for_con_handle(handle); 3906 if (iso_stream){ 3907 uint8_t status = hci_subevent_le_cis_established_get_status(packet); 3908 if (status == ERROR_CODE_SUCCESS){ 3909 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3910 } else { 3911 hci_iso_stream_finalize(iso_stream); 3912 } 3913 } 3914 break; 3915 case HCI_SUBEVENT_LE_CREATE_BIG_COMPLETE: 3916 big = hci_big_for_handle(packet[4]); 3917 if (big != NULL){ 3918 uint8_t status = packet[3]; 3919 if (status == ERROR_CODE_SUCCESS){ 3920 // store bis_con_handles and trigger iso path setup 3921 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[20]); 3922 uint8_t i; 3923 for (i=0;i<num_bis;i++){ 3924 hci_con_handle_t bis_handle = (hci_con_handle_t) little_endian_read_16(packet, 21 + (2 * i)); 3925 big->bis_con_handles[i] = bis_handle; 3926 // assign bis handle 3927 btstack_linked_list_iterator_t it; 3928 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3929 while (btstack_linked_list_iterator_has_next(&it)){ 3930 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3931 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 3932 (iso_stream->big_handle == big->big_handle)){ 3933 iso_stream->con_handle = bis_handle; 3934 iso_stream->state = HCI_ISO_STREAM_STATE_ESTABLISHED; 3935 break; 3936 } 3937 } 3938 } 3939 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3940 big->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3941 big->state_vars.next_bis = 0; 3942 } 3943 } else { 3944 // create BIG failed or has been stopped by us 3945 hci_iso_stream_requested_finalize(big->big_handle); 3946 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3947 if (big->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED){ 3948 hci_emit_big_created(big, status); 3949 } else { 3950 hci_emit_big_terminated(big); 3951 } 3952 } 3953 } 3954 break; 3955 case HCI_SUBEVENT_LE_TERMINATE_BIG_COMPLETE: 3956 big = hci_big_for_handle(hci_subevent_le_terminate_big_complete_get_big_handle(packet)); 3957 if (big != NULL){ 3958 // finalize associated ISO streams 3959 btstack_linked_list_iterator_t it; 3960 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 3961 while (btstack_linked_list_iterator_has_next(&it)){ 3962 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 3963 if (iso_stream->big_handle == big->big_handle){ 3964 log_info("BIG Terminated, big_handle 0x%02x, con handle 0x%04x", iso_stream->big_handle, iso_stream->con_handle); 3965 btstack_linked_list_iterator_remove(&it); 3966 btstack_memory_hci_iso_stream_free(iso_stream); 3967 } 3968 } 3969 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 3970 switch (big->state){ 3971 case LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED: 3972 hci_emit_big_created(big, big->state_vars.status); 3973 break; 3974 default: 3975 hci_emit_big_terminated(big); 3976 break; 3977 } 3978 } 3979 break; 3980 case HCI_SUBEVENT_LE_BIG_SYNC_ESTABLISHED: 3981 big_sync = hci_big_sync_for_handle(packet[4]); 3982 if (big_sync != NULL){ 3983 uint8_t status = packet[3]; 3984 if (status == ERROR_CODE_SUCCESS){ 3985 // store bis_con_handles and trigger iso path setup 3986 uint8_t num_bis = btstack_min(MAX_NR_BIS, packet[16]); 3987 uint8_t i; 3988 for (i=0;i<num_bis;i++){ 3989 big_sync->bis_con_handles[i] = little_endian_read_16(packet, 17 + (2 * i)); 3990 } 3991 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 3992 // trigger iso path setup 3993 big_sync->state = LE_AUDIO_BIG_STATE_SETUP_ISO_PATH; 3994 big_sync->state_vars.next_bis = 0; 3995 } 3996 } else { 3997 // create BIG Sync failed or has been stopped by us 3998 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 3999 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_ESTABLISHED) { 4000 hci_emit_big_sync_created(big_sync, status); 4001 } else { 4002 hci_emit_big_sync_stopped(big_sync); 4003 } 4004 } 4005 } 4006 break; 4007 case HCI_SUBEVENT_LE_BIG_SYNC_LOST: 4008 big_sync = hci_big_sync_for_handle(packet[4]); 4009 if (big_sync != NULL){ 4010 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 4011 hci_emit_big_sync_stopped(big_sync); 4012 } 4013 break; 4014 #endif 4015 default: 4016 break; 4017 } 4018 break; 4019 #endif 4020 case HCI_EVENT_VENDOR_SPECIFIC: 4021 // Vendor specific commands often create vendor specific event instead of num completed packets 4022 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 4023 switch (hci_stack->manufacturer){ 4024 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 4025 hci_stack->num_cmd_packets = 1; 4026 break; 4027 default: 4028 break; 4029 } 4030 break; 4031 default: 4032 break; 4033 } 4034 4035 handle_event_for_current_stack_state(packet, size); 4036 4037 // notify upper stack 4038 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 4039 4040 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 4041 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 4042 handle = little_endian_read_16(packet, 3); 4043 hci_connection_t * aConn = hci_connection_for_handle(handle); 4044 // discard connection if app did not trigger a reconnect in the event handler 4045 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 4046 hci_shutdown_connection(aConn); 4047 } 4048 #ifdef ENABLE_CONTROLLER_DUMP_PACKETS 4049 hci_controller_dump_packets(); 4050 #endif 4051 } 4052 4053 // execute main loop 4054 hci_run(); 4055 } 4056 4057 #ifdef ENABLE_CLASSIC 4058 4059 #ifdef ENABLE_SCO_OVER_HCI 4060 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 4061 static void sco_schedule_tx(hci_connection_t * conn); 4062 4063 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 4064 log_debug("SCO TX Timeout"); 4065 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 4066 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4067 if (!conn) return; 4068 4069 // trigger send 4070 conn->sco_tx_ready = 1; 4071 // extra packet if CVSD but SCO buffer is too short 4072 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 4073 conn->sco_tx_ready++; 4074 } 4075 hci_notify_if_sco_can_send_now(); 4076 } 4077 4078 4079 #define SCO_TX_AFTER_RX_MS (6) 4080 4081 static void sco_schedule_tx(hci_connection_t * conn){ 4082 4083 uint32_t now = btstack_run_loop_get_time_ms(); 4084 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 4085 int time_delta_ms = sco_tx_ms - now; 4086 4087 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 4088 4089 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 4090 btstack_run_loop_remove_timer(timer); 4091 btstack_run_loop_set_timer(timer, time_delta_ms); 4092 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 4093 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 4094 btstack_run_loop_add_timer(timer); 4095 } 4096 #endif 4097 4098 static void sco_handler(uint8_t * packet, uint16_t size){ 4099 // lookup connection struct 4100 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 4101 hci_connection_t * conn = hci_connection_for_handle(con_handle); 4102 if (!conn) return; 4103 4104 #ifdef ENABLE_SCO_OVER_HCI 4105 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 4106 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 4107 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 4108 packet[2] = 0x3c; 4109 memmove(&packet[3], &packet[23], 63); 4110 size = 63; 4111 } 4112 } 4113 4114 if (hci_have_usb_transport()){ 4115 // Nothing to do 4116 } else { 4117 // 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); 4118 if (hci_stack->synchronous_flow_control_enabled == 0){ 4119 uint32_t now = btstack_run_loop_get_time_ms(); 4120 4121 if (!conn->sco_rx_valid){ 4122 // ignore first 10 packets 4123 conn->sco_rx_count++; 4124 // log_debug("sco rx count %u", conn->sco_rx_count); 4125 if (conn->sco_rx_count == 10) { 4126 // use first timestamp as is and pretent it just started 4127 conn->sco_rx_ms = now; 4128 conn->sco_rx_valid = 1; 4129 conn->sco_rx_count = 0; 4130 sco_schedule_tx(conn); 4131 } 4132 } else { 4133 // track expected arrival timme 4134 conn->sco_rx_count++; 4135 conn->sco_rx_ms += 7; 4136 int delta = (int32_t) (now - conn->sco_rx_ms); 4137 if (delta > 0){ 4138 conn->sco_rx_ms++; 4139 } 4140 // log_debug("sco rx %u", conn->sco_rx_ms); 4141 sco_schedule_tx(conn); 4142 } 4143 } 4144 } 4145 #endif 4146 4147 // deliver to app 4148 if (hci_stack->sco_packet_handler) { 4149 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 4150 } 4151 4152 #ifdef HAVE_SCO_TRANSPORT 4153 // We can send one packet for each received packet 4154 conn->sco_tx_ready++; 4155 hci_notify_if_sco_can_send_now(); 4156 #endif 4157 4158 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4159 conn->num_packets_completed++; 4160 hci_stack->host_completed_packets = 1; 4161 hci_run(); 4162 #endif 4163 } 4164 #endif 4165 4166 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 4167 hci_dump_packet(packet_type, 1, packet, size); 4168 switch (packet_type) { 4169 case HCI_EVENT_PACKET: 4170 event_handler(packet, size); 4171 break; 4172 case HCI_ACL_DATA_PACKET: 4173 acl_handler(packet, size); 4174 break; 4175 #ifdef ENABLE_CLASSIC 4176 case HCI_SCO_DATA_PACKET: 4177 sco_handler(packet, size); 4178 break; 4179 #endif 4180 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4181 case HCI_ISO_DATA_PACKET: 4182 hci_iso_packet_handler(packet, size); 4183 break; 4184 #endif 4185 default: 4186 break; 4187 } 4188 } 4189 4190 /** 4191 * @brief Add event packet handler. 4192 */ 4193 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4194 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4195 } 4196 4197 /** 4198 * @brief Remove event packet handler. 4199 */ 4200 void hci_remove_event_handler(btstack_packet_callback_registration_t * callback_handler){ 4201 btstack_linked_list_remove(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 4202 } 4203 4204 /** Register HCI packet handlers */ 4205 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 4206 hci_stack->acl_packet_handler = handler; 4207 } 4208 4209 #ifdef ENABLE_CLASSIC 4210 /** 4211 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 4212 */ 4213 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 4214 hci_stack->sco_packet_handler = handler; 4215 } 4216 #endif 4217 4218 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4219 void hci_register_iso_packet_handler(btstack_packet_handler_t handler){ 4220 hci_stack->iso_packet_handler = handler; 4221 } 4222 #endif 4223 4224 static void hci_state_reset(void){ 4225 // no connections yet 4226 hci_stack->connections = NULL; 4227 4228 // keep discoverable/connectable as this has been requested by the client(s) 4229 // hci_stack->discoverable = 0; 4230 // hci_stack->connectable = 0; 4231 // hci_stack->bondable = 1; 4232 // hci_stack->own_addr_type = 0; 4233 4234 // buffer is free 4235 hci_stack->hci_packet_buffer_reserved = false; 4236 4237 // no pending cmds 4238 hci_stack->decline_reason = 0; 4239 4240 hci_stack->secure_connections_active = false; 4241 4242 #ifdef ENABLE_CLASSIC 4243 hci_stack->inquiry_lap = GAP_IAC_GENERAL_INQUIRY; 4244 hci_stack->page_timeout = 0x6000; // ca. 15 sec 4245 4246 hci_stack->gap_tasks_classic = 4247 GAP_TASK_SET_DEFAULT_LINK_POLICY | 4248 GAP_TASK_SET_CLASS_OF_DEVICE | 4249 GAP_TASK_SET_LOCAL_NAME | 4250 GAP_TASK_SET_EIR_DATA | 4251 GAP_TASK_WRITE_SCAN_ENABLE | 4252 GAP_TASK_WRITE_PAGE_TIMEOUT; 4253 #endif 4254 4255 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4256 hci_stack->classic_read_local_oob_data = false; 4257 hci_stack->classic_oob_con_handle = HCI_CON_HANDLE_INVALID; 4258 #endif 4259 4260 // LE 4261 #ifdef ENABLE_BLE 4262 memset(hci_stack->le_random_address, 0, 6); 4263 hci_stack->le_random_address_set = 0; 4264 #endif 4265 #ifdef ENABLE_LE_CENTRAL 4266 hci_stack->le_scanning_active = false; 4267 hci_stack->le_scanning_param_update = true; 4268 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 4269 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 4270 hci_stack->le_whitelist_capacity = 0; 4271 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4272 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 4273 #endif 4274 #endif 4275 #ifdef ENABLE_LE_PERIPHERAL 4276 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4277 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_PARAMS_SET) != 0){ 4278 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 4279 } 4280 if (hci_stack->le_advertisements_data != NULL){ 4281 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 4282 } 4283 #endif 4284 } 4285 4286 #ifdef ENABLE_CLASSIC 4287 /** 4288 * @brief Configure Bluetooth hardware control. Has to be called before power on. 4289 */ 4290 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 4291 // store and open remote device db 4292 hci_stack->link_key_db = link_key_db; 4293 if (hci_stack->link_key_db) { 4294 hci_stack->link_key_db->open(); 4295 } 4296 } 4297 #endif 4298 4299 void hci_init(const hci_transport_t *transport, const void *config){ 4300 4301 #ifdef HAVE_MALLOC 4302 if (!hci_stack) { 4303 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 4304 } 4305 #else 4306 hci_stack = &hci_stack_static; 4307 #endif 4308 memset(hci_stack, 0, sizeof(hci_stack_t)); 4309 4310 // reference to use transport layer implementation 4311 hci_stack->hci_transport = transport; 4312 4313 // reference to used config 4314 hci_stack->config = config; 4315 4316 // setup pointer for outgoing packet buffer 4317 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 4318 4319 // max acl payload size defined in config.h 4320 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 4321 4322 // register packet handlers with transport 4323 transport->register_packet_handler(&packet_handler); 4324 4325 hci_stack->state = HCI_STATE_OFF; 4326 4327 // class of device 4328 hci_stack->class_of_device = 0x007a020c; // Smartphone 4329 4330 // bondable by default 4331 hci_stack->bondable = 1; 4332 4333 #ifdef ENABLE_CLASSIC 4334 // classic name 4335 hci_stack->local_name = default_classic_name; 4336 4337 // Master slave policy 4338 hci_stack->master_slave_policy = 1; 4339 4340 // Allow Role Switch 4341 hci_stack->allow_role_switch = 1; 4342 4343 // Default / minimum security level = 2 4344 hci_stack->gap_security_level = LEVEL_2; 4345 4346 // Default Security Mode 4 4347 hci_stack->gap_security_mode = GAP_SECURITY_MODE_4; 4348 4349 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 4350 hci_stack->gap_required_encyrption_key_size = 7; 4351 4352 // Link Supervision Timeout 4353 hci_stack->link_supervision_timeout = HCI_LINK_SUPERVISION_TIMEOUT_DEFAULT; 4354 4355 #endif 4356 4357 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 4358 hci_stack->ssp_enable = 1; 4359 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 4360 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 4361 hci_stack->ssp_auto_accept = 1; 4362 4363 // Secure Connections: enable (requires support from Controller) 4364 hci_stack->secure_connections_enable = true; 4365 4366 // voice setting - signed 16 bit pcm data with CVSD over the air 4367 hci_stack->sco_voice_setting = 0x60; 4368 4369 #ifdef ENABLE_LE_CENTRAL 4370 // connection parameter to use for outgoing connections 4371 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 4372 hci_stack->le_connection_scan_window = 0x0030; // 30ms 4373 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 4374 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 4375 hci_stack->le_connection_latency = 4; // 4 4376 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 4377 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 4378 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 4379 4380 // default LE Scanning 4381 hci_stack->le_scan_type = 0x1; // active 4382 hci_stack->le_scan_interval = 0x1e0; // 300 ms 4383 hci_stack->le_scan_window = 0x30; // 30 ms 4384 #endif 4385 4386 #ifdef ENABLE_LE_PERIPHERAL 4387 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 4388 #endif 4389 4390 // connection parameter range used to answer connection parameter update requests in l2cap 4391 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 4392 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 4393 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 4394 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 4395 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 4396 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 4397 4398 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4399 hci_stack->iso_packets_to_queue = 1; 4400 #endif 4401 4402 hci_state_reset(); 4403 } 4404 4405 void hci_deinit(void){ 4406 btstack_run_loop_remove_timer(&hci_stack->timeout); 4407 #ifdef HAVE_MALLOC 4408 if (hci_stack) { 4409 free(hci_stack); 4410 } 4411 #endif 4412 hci_stack = NULL; 4413 4414 #ifdef ENABLE_CLASSIC 4415 disable_l2cap_timeouts = 0; 4416 #endif 4417 } 4418 4419 /** 4420 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 4421 */ 4422 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 4423 hci_stack->chipset = chipset_driver; 4424 4425 // reset chipset driver - init is also called on power_up 4426 if (hci_stack->chipset && hci_stack->chipset->init){ 4427 hci_stack->chipset->init(hci_stack->config); 4428 } 4429 } 4430 4431 /** 4432 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 4433 */ 4434 void hci_set_control(const btstack_control_t *hardware_control){ 4435 // references to used control implementation 4436 hci_stack->control = hardware_control; 4437 // init with transport config 4438 hardware_control->init(hci_stack->config); 4439 } 4440 4441 static void hci_discard_connections(void){ 4442 btstack_linked_list_iterator_t it; 4443 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 4444 while (btstack_linked_list_iterator_has_next(&it)){ 4445 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 4446 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 4447 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 4448 hci_shutdown_connection(connection); 4449 } 4450 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4451 while (hci_stack->iso_streams != NULL){ 4452 hci_iso_stream_finalize((hci_iso_stream_t *) hci_stack->iso_streams); 4453 } 4454 #endif 4455 } 4456 4457 void hci_close(void){ 4458 4459 #ifdef ENABLE_CLASSIC 4460 // close remote device db 4461 if (hci_stack->link_key_db) { 4462 hci_stack->link_key_db->close(); 4463 } 4464 #endif 4465 4466 hci_discard_connections(); 4467 4468 hci_power_control(HCI_POWER_OFF); 4469 4470 #ifdef HAVE_MALLOC 4471 free(hci_stack); 4472 #endif 4473 hci_stack = NULL; 4474 } 4475 4476 #ifdef HAVE_SCO_TRANSPORT 4477 void hci_set_sco_transport(const btstack_sco_transport_t *sco_transport){ 4478 hci_stack->sco_transport = sco_transport; 4479 sco_transport->register_packet_handler(&packet_handler); 4480 } 4481 #endif 4482 4483 #ifdef ENABLE_CLASSIC 4484 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 4485 // validate ranage and set 4486 if (encryption_key_size < 7) return; 4487 if (encryption_key_size > 16) return; 4488 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 4489 } 4490 4491 uint8_t gap_set_security_mode(gap_security_mode_t security_mode){ 4492 if ((security_mode == GAP_SECURITY_MODE_4) || (security_mode == GAP_SECURITY_MODE_2)){ 4493 hci_stack->gap_security_mode = security_mode; 4494 return ERROR_CODE_SUCCESS; 4495 } else { 4496 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 4497 } 4498 } 4499 4500 gap_security_mode_t gap_get_security_mode(void){ 4501 return hci_stack->gap_security_mode; 4502 } 4503 4504 void gap_set_security_level(gap_security_level_t security_level){ 4505 hci_stack->gap_security_level = security_level; 4506 } 4507 4508 gap_security_level_t gap_get_security_level(void){ 4509 if (hci_stack->gap_secure_connections_only_mode){ 4510 return LEVEL_4; 4511 } 4512 return hci_stack->gap_security_level; 4513 } 4514 4515 void gap_set_minimal_service_security_level(gap_security_level_t security_level){ 4516 hci_stack->gap_minimal_service_security_level = security_level; 4517 } 4518 4519 void gap_set_secure_connections_only_mode(bool enable){ 4520 hci_stack->gap_secure_connections_only_mode = enable; 4521 } 4522 4523 bool gap_get_secure_connections_only_mode(void){ 4524 return hci_stack->gap_secure_connections_only_mode; 4525 } 4526 #endif 4527 4528 #ifdef ENABLE_CLASSIC 4529 void gap_set_class_of_device(uint32_t class_of_device){ 4530 hci_stack->class_of_device = class_of_device; 4531 hci_stack->gap_tasks_classic |= GAP_TASK_SET_CLASS_OF_DEVICE; 4532 hci_run(); 4533 } 4534 4535 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 4536 hci_stack->default_link_policy_settings = default_link_policy_settings; 4537 hci_stack->gap_tasks_classic |= GAP_TASK_SET_DEFAULT_LINK_POLICY; 4538 hci_run(); 4539 } 4540 4541 void gap_set_allow_role_switch(bool allow_role_switch){ 4542 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 4543 } 4544 4545 uint8_t hci_get_allow_role_switch(void){ 4546 return hci_stack->allow_role_switch; 4547 } 4548 4549 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 4550 hci_stack->link_supervision_timeout = link_supervision_timeout; 4551 } 4552 4553 void gap_enable_link_watchdog(uint16_t timeout_ms){ 4554 hci_stack->automatic_flush_timeout = btstack_min(timeout_ms, 1280) * 8 / 5; // divide by 0.625 4555 } 4556 4557 uint16_t hci_automatic_flush_timeout(void){ 4558 return hci_stack->automatic_flush_timeout; 4559 } 4560 4561 void hci_disable_l2cap_timeout_check(void){ 4562 disable_l2cap_timeouts = 1; 4563 } 4564 #endif 4565 4566 #ifndef HAVE_HOST_CONTROLLER_API 4567 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 4568 void hci_set_bd_addr(bd_addr_t addr){ 4569 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 4570 hci_stack->custom_bd_addr_set = 1; 4571 } 4572 #endif 4573 4574 // State-Module-Driver overview 4575 // state module low-level 4576 // HCI_STATE_OFF off close 4577 // HCI_STATE_INITIALIZING, on open 4578 // HCI_STATE_WORKING, on open 4579 // HCI_STATE_HALTING, on open 4580 // HCI_STATE_SLEEPING, off/sleep close 4581 // HCI_STATE_FALLING_ASLEEP on open 4582 4583 static int hci_power_control_on(void){ 4584 4585 // power on 4586 int err = 0; 4587 if (hci_stack->control && hci_stack->control->on){ 4588 err = (*hci_stack->control->on)(); 4589 } 4590 if (err){ 4591 log_error( "POWER_ON failed"); 4592 hci_emit_hci_open_failed(); 4593 return err; 4594 } 4595 4596 // int chipset driver 4597 if (hci_stack->chipset && hci_stack->chipset->init){ 4598 hci_stack->chipset->init(hci_stack->config); 4599 } 4600 4601 // init transport 4602 if (hci_stack->hci_transport->init){ 4603 hci_stack->hci_transport->init(hci_stack->config); 4604 } 4605 4606 // open transport 4607 err = hci_stack->hci_transport->open(); 4608 if (err){ 4609 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4610 if (hci_stack->control && hci_stack->control->off){ 4611 (*hci_stack->control->off)(); 4612 } 4613 hci_emit_hci_open_failed(); 4614 return err; 4615 } 4616 return 0; 4617 } 4618 4619 static void hci_power_control_off(void){ 4620 4621 log_info("hci_power_control_off"); 4622 4623 // close low-level device 4624 hci_stack->hci_transport->close(); 4625 4626 log_info("hci_power_control_off - hci_transport closed"); 4627 4628 // power off 4629 if (hci_stack->control && hci_stack->control->off){ 4630 (*hci_stack->control->off)(); 4631 } 4632 4633 log_info("hci_power_control_off - control closed"); 4634 4635 hci_stack->state = HCI_STATE_OFF; 4636 } 4637 4638 static void hci_power_control_sleep(void){ 4639 4640 log_info("hci_power_control_sleep"); 4641 4642 #if 0 4643 // don't close serial port during sleep 4644 4645 // close low-level device 4646 hci_stack->hci_transport->close(hci_stack->config); 4647 #endif 4648 4649 // sleep mode 4650 if (hci_stack->control && hci_stack->control->sleep){ 4651 (*hci_stack->control->sleep)(); 4652 } 4653 4654 hci_stack->state = HCI_STATE_SLEEPING; 4655 } 4656 4657 static int hci_power_control_wake(void){ 4658 4659 log_info("hci_power_control_wake"); 4660 4661 // wake on 4662 if (hci_stack->control && hci_stack->control->wake){ 4663 (*hci_stack->control->wake)(); 4664 } 4665 4666 #if 0 4667 // open low-level device 4668 int err = hci_stack->hci_transport->open(hci_stack->config); 4669 if (err){ 4670 log_error( "HCI_INIT failed, turning Bluetooth off again"); 4671 if (hci_stack->control && hci_stack->control->off){ 4672 (*hci_stack->control->off)(); 4673 } 4674 hci_emit_hci_open_failed(); 4675 return err; 4676 } 4677 #endif 4678 4679 return 0; 4680 } 4681 4682 static void hci_power_enter_initializing_state(void){ 4683 // set up state machine 4684 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 4685 hci_stack->hci_packet_buffer_reserved = false; 4686 hci_stack->state = HCI_STATE_INITIALIZING; 4687 hci_stack->substate = HCI_INIT_SEND_RESET; 4688 } 4689 4690 static void hci_power_enter_halting_state(void){ 4691 #ifdef ENABLE_BLE 4692 hci_whitelist_free(); 4693 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4694 hci_periodic_advertiser_list_free(); 4695 #endif 4696 #endif 4697 // see hci_run 4698 hci_stack->state = HCI_STATE_HALTING; 4699 hci_stack->substate = HCI_HALTING_CLASSIC_STOP; 4700 // setup watchdog timer for disconnect - only triggers if Controller does not respond anymore 4701 btstack_run_loop_set_timer(&hci_stack->timeout, 1000); 4702 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4703 btstack_run_loop_add_timer(&hci_stack->timeout); 4704 } 4705 4706 // returns error 4707 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 4708 int err; 4709 switch (power_mode){ 4710 case HCI_POWER_ON: 4711 err = hci_power_control_on(); 4712 if (err != 0) { 4713 log_error("hci_power_control_on() error %d", err); 4714 return err; 4715 } 4716 hci_power_enter_initializing_state(); 4717 break; 4718 case HCI_POWER_OFF: 4719 // do nothing 4720 break; 4721 case HCI_POWER_SLEEP: 4722 // do nothing (with SLEEP == OFF) 4723 break; 4724 default: 4725 btstack_assert(false); 4726 break; 4727 } 4728 return ERROR_CODE_SUCCESS; 4729 } 4730 4731 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 4732 switch (power_mode){ 4733 case HCI_POWER_ON: 4734 // do nothing 4735 break; 4736 case HCI_POWER_OFF: 4737 // no connections yet, just turn it off 4738 hci_power_control_off(); 4739 break; 4740 case HCI_POWER_SLEEP: 4741 // no connections yet, just turn it off 4742 hci_power_control_sleep(); 4743 break; 4744 default: 4745 btstack_assert(false); 4746 break; 4747 } 4748 return ERROR_CODE_SUCCESS; 4749 } 4750 4751 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 4752 switch (power_mode){ 4753 case HCI_POWER_ON: 4754 // do nothing 4755 break; 4756 case HCI_POWER_OFF: 4757 hci_power_enter_halting_state(); 4758 break; 4759 case HCI_POWER_SLEEP: 4760 // see hci_run 4761 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4762 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4763 break; 4764 default: 4765 btstack_assert(false); 4766 break; 4767 } 4768 return ERROR_CODE_SUCCESS; 4769 } 4770 4771 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 4772 switch (power_mode){ 4773 case HCI_POWER_ON: 4774 hci_power_enter_initializing_state(); 4775 break; 4776 case HCI_POWER_OFF: 4777 // do nothing 4778 break; 4779 case HCI_POWER_SLEEP: 4780 // see hci_run 4781 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 4782 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 4783 break; 4784 default: 4785 btstack_assert(false); 4786 break; 4787 } 4788 return ERROR_CODE_SUCCESS; 4789 } 4790 4791 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 4792 switch (power_mode){ 4793 case HCI_POWER_ON: 4794 hci_power_enter_initializing_state(); 4795 break; 4796 case HCI_POWER_OFF: 4797 hci_power_enter_halting_state(); 4798 break; 4799 case HCI_POWER_SLEEP: 4800 // do nothing 4801 break; 4802 default: 4803 btstack_assert(false); 4804 break; 4805 } 4806 return ERROR_CODE_SUCCESS; 4807 } 4808 4809 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 4810 int err; 4811 switch (power_mode){ 4812 case HCI_POWER_ON: 4813 err = hci_power_control_wake(); 4814 if (err) return err; 4815 hci_power_enter_initializing_state(); 4816 break; 4817 case HCI_POWER_OFF: 4818 hci_power_enter_halting_state(); 4819 break; 4820 case HCI_POWER_SLEEP: 4821 // do nothing 4822 break; 4823 default: 4824 btstack_assert(false); 4825 break; 4826 } 4827 return ERROR_CODE_SUCCESS; 4828 } 4829 4830 int hci_power_control(HCI_POWER_MODE power_mode){ 4831 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 4832 int err = 0; 4833 switch (hci_stack->state){ 4834 case HCI_STATE_OFF: 4835 err = hci_power_control_state_off(power_mode); 4836 break; 4837 case HCI_STATE_INITIALIZING: 4838 err = hci_power_control_state_initializing(power_mode); 4839 break; 4840 case HCI_STATE_WORKING: 4841 err = hci_power_control_state_working(power_mode); 4842 break; 4843 case HCI_STATE_HALTING: 4844 err = hci_power_control_state_halting(power_mode); 4845 break; 4846 case HCI_STATE_FALLING_ASLEEP: 4847 err = hci_power_control_state_falling_asleep(power_mode); 4848 break; 4849 case HCI_STATE_SLEEPING: 4850 err = hci_power_control_state_sleeping(power_mode); 4851 break; 4852 default: 4853 btstack_assert(false); 4854 break; 4855 } 4856 if (err != 0){ 4857 return err; 4858 } 4859 4860 // create internal event 4861 hci_emit_state(); 4862 4863 // trigger next/first action 4864 hci_run(); 4865 4866 return 0; 4867 } 4868 4869 4870 static void hci_halting_run(void) { 4871 4872 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4873 4874 hci_connection_t *connection; 4875 #ifdef ENABLE_BLE 4876 #ifdef ENABLE_LE_PERIPHERAL 4877 bool stop_advertismenets; 4878 #endif 4879 #endif 4880 4881 switch (hci_stack->substate) { 4882 case HCI_HALTING_CLASSIC_STOP: 4883 #ifdef ENABLE_CLASSIC 4884 if (!hci_can_send_command_packet_now()) return; 4885 4886 if (hci_stack->connectable || hci_stack->discoverable){ 4887 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4888 hci_send_cmd(&hci_write_scan_enable, 0); 4889 return; 4890 } 4891 #endif 4892 /* fall through */ 4893 4894 case HCI_HALTING_LE_ADV_STOP: 4895 hci_stack->substate = HCI_HALTING_LE_ADV_STOP; 4896 4897 #ifdef ENABLE_BLE 4898 #ifdef ENABLE_LE_PERIPHERAL 4899 if (!hci_can_send_command_packet_now()) return; 4900 4901 stop_advertismenets = (hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0; 4902 4903 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 4904 if (hci_extended_advertising_supported()){ 4905 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 4906 btstack_linked_list_iterator_t it; 4907 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 4908 // stop all periodic advertisements and check if an extended set is active 4909 while (btstack_linked_list_iterator_has_next(&it)){ 4910 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 4911 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 4912 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 4913 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_set->advertising_handle); 4914 return; 4915 } 4916 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 4917 stop_advertismenets = true; 4918 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4919 } 4920 } 4921 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 4922 if (stop_advertismenets){ 4923 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4924 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 0, NULL, NULL, NULL); 4925 return; 4926 } 4927 } 4928 else 4929 #else /* ENABLE_LE_PERIPHERAL */ 4930 { 4931 if (stop_advertismenets) { 4932 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 4933 hci_send_cmd(&hci_le_set_advertise_enable, 0); 4934 return; 4935 } 4936 } 4937 #endif /* ENABLE_LE_EXTENDED_ADVERTISING*/ 4938 #endif /* ENABLE_LE_PERIPHERAL */ 4939 #endif /* ENABLE_BLE */ 4940 4941 /* fall through */ 4942 4943 case HCI_HALTING_LE_SCAN_STOP: 4944 hci_stack->substate = HCI_HALTING_LE_SCAN_STOP; 4945 if (!hci_can_send_command_packet_now()) return; 4946 4947 #ifdef ENABLE_BLE 4948 #ifdef ENABLE_LE_CENTRAL 4949 if (hci_stack->le_scanning_active){ 4950 hci_le_scan_stop(); 4951 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4952 return; 4953 } 4954 #endif 4955 #endif 4956 4957 /* fall through */ 4958 4959 case HCI_HALTING_DISCONNECT_ALL: 4960 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL; 4961 if (!hci_can_send_command_packet_now()) return; 4962 4963 // close all open connections 4964 connection = (hci_connection_t *) hci_stack->connections; 4965 if (connection) { 4966 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4967 4968 // check state 4969 if (connection->state == SENT_DISCONNECT) return; 4970 connection->state = SENT_DISCONNECT; 4971 4972 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4973 4974 // finally, send the disconnect command 4975 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4976 return; 4977 } 4978 4979 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 4980 // stop BIGs and BIG Syncs 4981 if (hci_stack->le_audio_bigs != NULL){ 4982 le_audio_big_t * big = (le_audio_big_t*) hci_stack->le_audio_bigs; 4983 if (big->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4984 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4985 hci_send_cmd(&hci_le_terminate_big, big->big_handle); 4986 return; 4987 } 4988 if (hci_stack->le_audio_big_syncs != NULL){ 4989 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t*) hci_stack->le_audio_big_syncs; 4990 if (big_sync->state == LE_AUDIO_BIG_STATE_W4_TERMINATED) return; 4991 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 4992 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 4993 return; 4994 } 4995 #endif 4996 4997 btstack_run_loop_remove_timer(&hci_stack->timeout); 4998 4999 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 5000 log_info("HCI_STATE_HALTING: wait 50 ms"); 5001 hci_stack->substate = HCI_HALTING_W4_CLOSE_TIMER; 5002 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 5003 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 5004 btstack_run_loop_add_timer(&hci_stack->timeout); 5005 break; 5006 5007 case HCI_HALTING_CLOSE: 5008 // close left over connections (that had not been properly closed before) 5009 hci_discard_connections(); 5010 5011 log_info("HCI_STATE_HALTING, calling off"); 5012 5013 // switch mode 5014 hci_power_control_off(); 5015 5016 log_info("HCI_STATE_HALTING, emitting state"); 5017 hci_emit_state(); 5018 log_info("HCI_STATE_HALTING, done"); 5019 break; 5020 5021 case HCI_HALTING_W4_CLOSE_TIMER: 5022 // keep waiting 5023 5024 break; 5025 default: 5026 break; 5027 } 5028 }; 5029 5030 static void hci_falling_asleep_run(void){ 5031 hci_connection_t * connection; 5032 switch(hci_stack->substate) { 5033 case HCI_FALLING_ASLEEP_DISCONNECT: 5034 log_info("HCI_STATE_FALLING_ASLEEP"); 5035 // close all open connections 5036 connection = (hci_connection_t *) hci_stack->connections; 5037 if (connection){ 5038 5039 // send disconnect 5040 if (!hci_can_send_command_packet_now()) return; 5041 5042 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 5043 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 5044 5045 // send disconnected event right away - causes higher layer connections to get closed, too. 5046 hci_shutdown_connection(connection); 5047 return; 5048 } 5049 5050 if (hci_classic_supported()){ 5051 // disable page and inquiry scan 5052 if (!hci_can_send_command_packet_now()) return; 5053 5054 log_info("HCI_STATE_HALTING, disabling inq scans"); 5055 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 5056 5057 // continue in next sub state 5058 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 5059 break; 5060 } 5061 5062 /* fall through */ 5063 5064 case HCI_FALLING_ASLEEP_COMPLETE: 5065 log_info("HCI_STATE_HALTING, calling sleep"); 5066 // switch mode 5067 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 5068 hci_emit_state(); 5069 break; 5070 5071 default: 5072 break; 5073 } 5074 } 5075 5076 #ifdef ENABLE_CLASSIC 5077 5078 static void hci_update_scan_enable(void){ 5079 // 2 = page scan, 1 = inq scan 5080 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 5081 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_SCAN_ENABLE; 5082 hci_run(); 5083 } 5084 5085 void gap_discoverable_control(uint8_t enable){ 5086 if (enable) enable = 1; // normalize argument 5087 5088 if (hci_stack->discoverable == enable){ 5089 hci_emit_scan_mode_changed(hci_stack->discoverable, hci_stack->connectable); 5090 return; 5091 } 5092 5093 hci_stack->discoverable = enable; 5094 hci_update_scan_enable(); 5095 } 5096 5097 void gap_connectable_control(uint8_t enable){ 5098 if (enable) enable = 1; // normalize argument 5099 5100 // don't emit event 5101 if (hci_stack->connectable == enable) return; 5102 5103 hci_stack->connectable = enable; 5104 hci_update_scan_enable(); 5105 } 5106 #endif 5107 5108 void gap_local_bd_addr(bd_addr_t address_buffer){ 5109 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 5110 } 5111 5112 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 5113 static void hci_host_num_completed_packets(void){ 5114 5115 // create packet manually as arrays are not supported and num_commands should not get reduced 5116 hci_reserve_packet_buffer(); 5117 uint8_t * packet = hci_get_outgoing_packet_buffer(); 5118 5119 uint16_t size = 0; 5120 uint16_t num_handles = 0; 5121 packet[size++] = 0x35; 5122 packet[size++] = 0x0c; 5123 size++; // skip param len 5124 size++; // skip num handles 5125 5126 // add { handle, packets } entries 5127 btstack_linked_item_t * it; 5128 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 5129 hci_connection_t * connection = (hci_connection_t *) it; 5130 if (connection->num_packets_completed){ 5131 little_endian_store_16(packet, size, connection->con_handle); 5132 size += 2; 5133 little_endian_store_16(packet, size, connection->num_packets_completed); 5134 size += 2; 5135 // 5136 num_handles++; 5137 connection->num_packets_completed = 0; 5138 } 5139 } 5140 5141 packet[2] = size - 3; 5142 packet[3] = num_handles; 5143 5144 hci_stack->host_completed_packets = 0; 5145 5146 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 5147 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 5148 5149 // release packet buffer for synchronous transport implementations 5150 if (hci_transport_synchronous()){ 5151 hci_release_packet_buffer(); 5152 hci_emit_transport_packet_sent(); 5153 } 5154 } 5155 #endif 5156 5157 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 5158 UNUSED(ds); 5159 hci_stack->substate = HCI_HALTING_CLOSE; 5160 // allow packet handlers to defer final shutdown 5161 hci_emit_state(); 5162 hci_run(); 5163 } 5164 5165 static bool hci_run_acl_fragments(void){ 5166 if (hci_stack->acl_fragmentation_total_size > 0u) { 5167 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 5168 hci_connection_t *connection = hci_connection_for_handle(con_handle); 5169 if (connection) { 5170 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 5171 hci_send_acl_packet_fragments(connection); 5172 return true; 5173 } 5174 } else { 5175 // connection gone -> discard further fragments 5176 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 5177 hci_stack->acl_fragmentation_total_size = 0; 5178 hci_stack->acl_fragmentation_pos = 0; 5179 } 5180 } 5181 return false; 5182 } 5183 5184 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 5185 static bool hci_run_iso_fragments(void){ 5186 if (hci_stack->iso_fragmentation_total_size > 0u) { 5187 // TODO: flow control 5188 if (hci_transport_can_send_prepared_packet_now(HCI_ISO_DATA_PACKET)){ 5189 hci_send_iso_packet_fragments(); 5190 return true; 5191 } 5192 } 5193 return false; 5194 } 5195 #endif 5196 5197 #ifdef ENABLE_CLASSIC 5198 5199 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5200 static bool hci_classic_operation_active(void) { 5201 if (hci_stack->inquiry_state >= GAP_INQUIRY_STATE_W4_ACTIVE){ 5202 return true; 5203 } 5204 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 5205 return true; 5206 } 5207 btstack_linked_item_t * it; 5208 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next) { 5209 hci_connection_t *connection = (hci_connection_t *) it; 5210 switch (connection->state) { 5211 case SENT_CREATE_CONNECTION: 5212 case SENT_CANCEL_CONNECTION: 5213 case SENT_DISCONNECT: 5214 return true; 5215 default: 5216 break; 5217 } 5218 } 5219 return false; 5220 } 5221 #endif 5222 5223 static bool hci_run_general_gap_classic(void){ 5224 5225 // assert stack is working and classic is active 5226 if (hci_classic_supported() == false) return false; 5227 if (hci_stack->state != HCI_STATE_WORKING) return false; 5228 5229 // decline incoming connections 5230 if (hci_stack->decline_reason){ 5231 uint8_t reason = hci_stack->decline_reason; 5232 hci_stack->decline_reason = 0; 5233 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 5234 return true; 5235 } 5236 5237 if (hci_stack->gap_tasks_classic != 0){ 5238 hci_run_gap_tasks_classic(); 5239 return true; 5240 } 5241 5242 // start/stop inquiry 5243 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 5244 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5245 if (hci_classic_operation_active() == false) 5246 #endif 5247 { 5248 uint8_t duration = hci_stack->inquiry_state; 5249 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_ACTIVE; 5250 if (hci_stack->inquiry_max_period_length != 0){ 5251 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); 5252 } else { 5253 hci_send_cmd(&hci_inquiry, hci_stack->inquiry_lap, duration, 0); 5254 } 5255 return true; 5256 } 5257 } 5258 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 5259 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5260 hci_send_cmd(&hci_inquiry_cancel); 5261 return true; 5262 } 5263 5264 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_EXIT_PERIODIC){ 5265 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 5266 hci_send_cmd(&hci_exit_periodic_inquiry_mode); 5267 return true; 5268 } 5269 5270 // remote name request 5271 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 5272 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 5273 if (hci_classic_operation_active() == false) 5274 #endif 5275 { 5276 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 5277 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 5278 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 5279 return true; 5280 } 5281 } 5282 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5283 // Local OOB data 5284 if (hci_stack->classic_read_local_oob_data){ 5285 hci_stack->classic_read_local_oob_data = false; 5286 if (hci_command_supported(SUPPORTED_HCI_COMMAND_READ_LOCAL_OOB_EXTENDED_DATA_COMMAND)){ 5287 hci_send_cmd(&hci_read_local_extended_oob_data); 5288 } else { 5289 hci_send_cmd(&hci_read_local_oob_data); 5290 } 5291 } 5292 #endif 5293 // pairing 5294 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 5295 uint8_t state = hci_stack->gap_pairing_state; 5296 uint8_t pin_code[16]; 5297 switch (state){ 5298 case GAP_PAIRING_STATE_SEND_PIN: 5299 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5300 memset(pin_code, 0, 16); 5301 memcpy(pin_code, hci_stack->gap_pairing_input.gap_pairing_pin, hci_stack->gap_pairing_pin_len); 5302 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, pin_code); 5303 break; 5304 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 5305 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5306 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 5307 break; 5308 case GAP_PAIRING_STATE_SEND_PASSKEY: 5309 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5310 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 5311 break; 5312 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 5313 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5314 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 5315 break; 5316 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 5317 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 5318 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 5319 break; 5320 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 5321 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_WAIT_FOR_COMMAND_COMPLETE; 5322 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 5323 break; 5324 default: 5325 break; 5326 } 5327 return true; 5328 } 5329 return false; 5330 } 5331 #endif 5332 5333 #ifdef ENABLE_BLE 5334 5335 #ifdef ENABLE_LE_CENTRAL 5336 static void hci_le_scan_stop(void){ 5337 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5338 if (hci_extended_advertising_supported()) { 5339 hci_send_cmd(&hci_le_set_extended_scan_enable, 0, 0, 0, 0); 5340 } else 5341 #endif 5342 { 5343 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 5344 } 5345 } 5346 #endif 5347 5348 #ifdef ENABLE_LE_PERIPHERAL 5349 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5350 uint8_t hci_le_extended_advertising_operation_for_chunk(uint16_t pos, uint16_t len){ 5351 uint8_t operation = 0; 5352 if (pos == 0){ 5353 // first fragment or complete data 5354 operation |= 1; 5355 } 5356 if (pos + LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN >= len){ 5357 // last fragment or complete data 5358 operation |= 2; 5359 } 5360 return operation; 5361 } 5362 #endif 5363 #endif 5364 5365 static bool hci_run_general_gap_le(void){ 5366 5367 btstack_linked_list_iterator_t lit; 5368 5369 // Phase 1: collect what to stop 5370 5371 #ifdef ENABLE_LE_CENTRAL 5372 bool scanning_stop = false; 5373 bool connecting_stop = false; 5374 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5375 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5376 bool periodic_sync_stop = false; 5377 #endif 5378 #endif 5379 #endif 5380 5381 #ifdef ENABLE_LE_PERIPHERAL 5382 bool advertising_stop = false; 5383 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5384 le_advertising_set_t * advertising_stop_set = NULL; 5385 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5386 bool periodic_advertising_stop = false; 5387 #endif 5388 #endif 5389 #endif 5390 5391 // check if own address changes 5392 bool random_address_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5393 5394 // check if whitelist needs modification 5395 bool whitelist_modification_pending = false; 5396 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5397 while (btstack_linked_list_iterator_has_next(&lit)){ 5398 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5399 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 5400 whitelist_modification_pending = true; 5401 break; 5402 } 5403 } 5404 5405 // check if resolving list needs modification 5406 bool resolving_list_modification_pending = false; 5407 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5408 bool resolving_list_supported = hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE); 5409 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 5410 resolving_list_modification_pending = true; 5411 } 5412 #endif 5413 5414 #ifdef ENABLE_LE_CENTRAL 5415 5416 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5417 // check if periodic advertiser list needs modification 5418 bool periodic_list_modification_pending = false; 5419 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 5420 while (btstack_linked_list_iterator_has_next(&lit)){ 5421 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 5422 if (entry->state & (LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER | LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER)){ 5423 periodic_list_modification_pending = true; 5424 break; 5425 } 5426 } 5427 #endif 5428 5429 // scanning control 5430 if (hci_stack->le_scanning_active) { 5431 // stop if: 5432 // - parameter change required 5433 // - it's disabled 5434 // - whitelist change required but used for scanning 5435 // - resolving list modified 5436 // - own address changes 5437 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 5438 if ((hci_stack->le_scanning_param_update) || 5439 !hci_stack->le_scanning_enabled || 5440 (scanning_uses_whitelist && whitelist_modification_pending) || 5441 resolving_list_modification_pending || 5442 random_address_change){ 5443 5444 scanning_stop = true; 5445 } 5446 } 5447 5448 // connecting control 5449 bool connecting_with_whitelist; 5450 switch (hci_stack->le_connecting_state){ 5451 case LE_CONNECTING_DIRECT: 5452 case LE_CONNECTING_WHITELIST: 5453 // stop connecting if: 5454 // - connecting uses white and whitelist modification pending 5455 // - if it got disabled 5456 // - resolving list modified 5457 // - own address changes 5458 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 5459 if ((connecting_with_whitelist && whitelist_modification_pending) || 5460 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 5461 resolving_list_modification_pending || 5462 random_address_change) { 5463 5464 connecting_stop = true; 5465 } 5466 break; 5467 default: 5468 break; 5469 } 5470 5471 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5472 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5473 // periodic sync control 5474 bool sync_with_advertiser_list; 5475 switch(hci_stack->le_periodic_sync_state){ 5476 case LE_CONNECTING_DIRECT: 5477 case LE_CONNECTING_WHITELIST: 5478 // stop sync if: 5479 // - sync with advertiser list and advertiser list modification pending 5480 // - if it got disabled 5481 sync_with_advertiser_list = hci_stack->le_periodic_sync_state == LE_CONNECTING_WHITELIST; 5482 if ((sync_with_advertiser_list && periodic_list_modification_pending) || 5483 (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE)){ 5484 periodic_sync_stop = true; 5485 } 5486 break; 5487 default: 5488 break; 5489 } 5490 #endif 5491 #endif 5492 5493 #endif /* ENABLE_LE_CENTRAL */ 5494 5495 #ifdef ENABLE_LE_PERIPHERAL 5496 // le advertisement control 5497 if ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0){ 5498 // stop if: 5499 // - parameter change required 5500 // - random address used in advertising and changes 5501 // - it's disabled 5502 // - whitelist change required but used for advertisement filter policy 5503 // - resolving list modified 5504 // - own address changes 5505 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy != 0; 5506 bool advertising_uses_random_address = hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC; 5507 bool advertising_change = (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5508 if (advertising_change || 5509 (advertising_uses_random_address && random_address_change) || 5510 (hci_stack->le_advertisements_enabled_for_current_roles == 0) || 5511 (advertising_uses_whitelist && whitelist_modification_pending) || 5512 resolving_list_modification_pending || 5513 random_address_change) { 5514 5515 advertising_stop = true; 5516 } 5517 } 5518 5519 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5520 if (hci_extended_advertising_supported() && (advertising_stop == false)){ 5521 btstack_linked_list_iterator_t it; 5522 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5523 while (btstack_linked_list_iterator_has_next(&it)){ 5524 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5525 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) != 0) { 5526 // stop if: 5527 // - parameter change required 5528 // - random address used in connectable advertising and changes 5529 // - it's disabled 5530 // - whitelist change required but used for advertisement filter policy 5531 // - resolving list modified 5532 // - own address changes 5533 // - advertisement set will be removed 5534 bool advertising_uses_whitelist = advertising_set->extended_params.advertising_filter_policy != 0; 5535 bool advertising_connectable = (advertising_set->extended_params.advertising_event_properties & 1) != 0; 5536 bool advertising_uses_random_address = 5537 (advertising_set->extended_params.own_address_type != BD_ADDR_TYPE_LE_PUBLIC) && 5538 advertising_connectable; 5539 bool advertising_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0; 5540 bool advertising_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0; 5541 bool advertising_set_random_address_change = 5542 (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0; 5543 bool advertising_set_will_be_removed = 5544 (advertising_set->state & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0; 5545 if (advertising_parameter_change || 5546 (advertising_uses_random_address && advertising_set_random_address_change) || 5547 (advertising_enabled == false) || 5548 (advertising_uses_whitelist && whitelist_modification_pending) || 5549 resolving_list_modification_pending || 5550 advertising_set_will_be_removed) { 5551 5552 advertising_stop = true; 5553 advertising_stop_set = advertising_set; 5554 break; 5555 } 5556 } 5557 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5558 if ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) != 0) { 5559 // stop if: 5560 // - it's disabled 5561 // - parameter change required 5562 bool periodic_enabled = (advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0; 5563 bool periodic_parameter_change = (advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0; 5564 if ((periodic_enabled == false) || periodic_parameter_change){ 5565 periodic_advertising_stop = true; 5566 advertising_stop_set = advertising_set; 5567 } 5568 } 5569 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5570 } 5571 } 5572 #endif 5573 5574 #endif 5575 5576 5577 // Phase 2: stop everything that should be off during modifications 5578 5579 5580 // 2.1 Outgoing connection 5581 #ifdef ENABLE_LE_CENTRAL 5582 if (connecting_stop){ 5583 hci_send_cmd(&hci_le_create_connection_cancel); 5584 return true; 5585 } 5586 #endif 5587 5588 // 2.2 Scanning 5589 #ifdef ENABLE_LE_CENTRAL 5590 if (scanning_stop){ 5591 hci_stack->le_scanning_active = false; 5592 hci_le_scan_stop(); 5593 return true; 5594 } 5595 5596 // 2.3 Periodic Sync 5597 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5598 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 5599 uint16_t sync_handle = hci_stack->le_periodic_terminate_sync_handle; 5600 hci_stack->le_periodic_terminate_sync_handle = HCI_CON_HANDLE_INVALID; 5601 hci_send_cmd(&hci_le_periodic_advertising_terminate_sync, sync_handle); 5602 return true; 5603 } 5604 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5605 if (periodic_sync_stop){ 5606 hci_stack->le_periodic_sync_state = LE_CONNECTING_CANCEL; 5607 hci_send_cmd(&hci_le_periodic_advertising_create_sync_cancel); 5608 return true; 5609 } 5610 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5611 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5612 #endif /* ENABLE_LE_CENTRAL */ 5613 5614 // 2.4 Advertising: legacy, extended, periodic 5615 #ifdef ENABLE_LE_PERIPHERAL 5616 if (advertising_stop){ 5617 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5618 if (hci_extended_advertising_supported()) { 5619 uint8_t advertising_stop_handle; 5620 if (advertising_stop_set != NULL){ 5621 advertising_stop_handle = advertising_stop_set->advertising_handle; 5622 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5623 } else { 5624 advertising_stop_handle = 0; 5625 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5626 } 5627 const uint8_t advertising_handles[] = { advertising_stop_handle }; 5628 const uint16_t durations[] = { 0 }; 5629 const uint16_t max_events[] = { 0 }; 5630 hci_send_cmd(&hci_le_set_extended_advertising_enable, 0, 1, advertising_handles, durations, max_events); 5631 } else 5632 #endif 5633 { 5634 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ACTIVE; 5635 hci_send_cmd(&hci_le_set_advertise_enable, 0); 5636 } 5637 return true; 5638 } 5639 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5640 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5641 if (periodic_advertising_stop){ 5642 advertising_stop_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 5643 hci_send_cmd(&hci_le_set_periodic_advertising_enable, 0, advertising_stop_set->advertising_handle); 5644 return true; 5645 } 5646 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5647 #endif /* ENABLE_LE_EXTENDED_ADVERTISING */ 5648 #endif /* ENABLE_LE_PERIPHERAL */ 5649 5650 5651 // Phase 3: modify 5652 5653 if (random_address_change){ 5654 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5655 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5656 if (hci_extended_advertising_supported()) { 5657 hci_send_cmd(&hci_le_set_advertising_set_random_address, 0, hci_stack->le_random_address); 5658 } 5659 #endif 5660 { 5661 hci_send_cmd(&hci_le_set_random_address, hci_stack->le_random_address); 5662 } 5663 return true; 5664 } 5665 5666 #ifdef ENABLE_LE_CENTRAL 5667 if (hci_stack->le_scanning_param_update){ 5668 hci_stack->le_scanning_param_update = false; 5669 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5670 if (hci_extended_advertising_supported()){ 5671 // prepare arrays for all PHYs 5672 uint8_t scan_types[1] = { hci_stack->le_scan_type }; 5673 uint16_t scan_intervals[1] = { hci_stack->le_scan_interval }; 5674 uint16_t scan_windows[1] = { hci_stack->le_scan_window }; 5675 uint8_t scanning_phys = 1; // LE 1M PHY 5676 hci_send_cmd(&hci_le_set_extended_scan_parameters, hci_stack->le_own_addr_type, 5677 hci_stack->le_scan_filter_policy, scanning_phys, scan_types, scan_intervals, scan_windows); 5678 } else 5679 #endif 5680 { 5681 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 5682 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 5683 } 5684 return true; 5685 } 5686 #endif 5687 5688 #ifdef ENABLE_LE_PERIPHERAL 5689 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 5690 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5691 hci_stack->le_advertisements_own_addr_type = hci_stack->le_own_addr_type; 5692 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5693 if (hci_extended_advertising_supported()){ 5694 // map advertisment type to advertising event properties 5695 uint16_t adv_event_properties = 0; 5696 const uint16_t mapping[] = { 0b00010011, 0b00010101, 0b00011101, 0b00010010, 0b00010000}; 5697 if (hci_stack->le_advertisements_type < (sizeof(mapping)/sizeof(uint16_t))){ 5698 adv_event_properties = mapping[hci_stack->le_advertisements_type]; 5699 } 5700 hci_stack->le_advertising_set_in_current_command = 0; 5701 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5702 0, 5703 adv_event_properties, 5704 hci_stack->le_advertisements_interval_min, 5705 hci_stack->le_advertisements_interval_max, 5706 hci_stack->le_advertisements_channel_map, 5707 hci_stack->le_advertisements_own_addr_type, 5708 hci_stack->le_advertisements_direct_address_type, 5709 hci_stack->le_advertisements_direct_address, 5710 hci_stack->le_advertisements_filter_policy, 5711 0x7f, // tx power: no preference 5712 0x01, // primary adv phy: LE 1M 5713 0, // secondary adv max skip 5714 0, // secondary adv phy 5715 0, // adv sid 5716 0 // scan request notification 5717 ); 5718 } 5719 #endif 5720 { 5721 hci_send_cmd(&hci_le_set_advertising_parameters, 5722 hci_stack->le_advertisements_interval_min, 5723 hci_stack->le_advertisements_interval_max, 5724 hci_stack->le_advertisements_type, 5725 hci_stack->le_advertisements_own_addr_type, 5726 hci_stack->le_advertisements_direct_address_type, 5727 hci_stack->le_advertisements_direct_address, 5728 hci_stack->le_advertisements_channel_map, 5729 hci_stack->le_advertisements_filter_policy); 5730 } 5731 return true; 5732 } 5733 5734 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 5735 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5736 uint8_t adv_data_clean[31]; 5737 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 5738 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 5739 hci_stack->le_advertisements_data_len); 5740 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 5741 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5742 if (hci_extended_advertising_supported()){ 5743 hci_stack->le_advertising_set_in_current_command = 0; 5744 hci_send_cmd(&hci_le_set_extended_advertising_data, 0, 0x03, 0x01, hci_stack->le_advertisements_data_len, adv_data_clean); 5745 } else 5746 #endif 5747 { 5748 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 5749 } 5750 return true; 5751 } 5752 5753 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 5754 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5755 uint8_t scan_data_clean[31]; 5756 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 5757 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 5758 hci_stack->le_scan_response_data_len); 5759 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 5760 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5761 if (hci_extended_advertising_supported()){ 5762 hci_stack->le_advertising_set_in_current_command = 0; 5763 hci_send_cmd(&hci_le_set_extended_scan_response_data, 0, 0x03, 0x01, hci_stack->le_scan_response_data_len, scan_data_clean); 5764 } else 5765 #endif 5766 { 5767 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 5768 } 5769 return true; 5770 } 5771 5772 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5773 if (hci_extended_advertising_supported()) { 5774 btstack_linked_list_iterator_t it; 5775 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 5776 while (btstack_linked_list_iterator_has_next(&it)){ 5777 le_advertising_set_t * advertising_set = (le_advertising_set_t*) btstack_linked_list_iterator_next(&it); 5778 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_REMOVE_SET) != 0) { 5779 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_REMOVE_SET; 5780 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5781 hci_send_cmd(&hci_le_remove_advertising_set, advertising_set->advertising_handle); 5782 return true; 5783 } 5784 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADDRESS) != 0){ 5785 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 5786 hci_send_cmd(&hci_le_set_advertising_set_random_address, advertising_set->advertising_handle, advertising_set->random_address); 5787 return true; 5788 } 5789 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PARAMS) != 0){ 5790 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5791 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5792 hci_send_cmd(&hci_le_set_extended_advertising_parameters, 5793 advertising_set->advertising_handle, 5794 advertising_set->extended_params.advertising_event_properties, 5795 advertising_set->extended_params.primary_advertising_interval_min, 5796 advertising_set->extended_params.primary_advertising_interval_max, 5797 advertising_set->extended_params.primary_advertising_channel_map, 5798 advertising_set->extended_params.own_address_type, 5799 advertising_set->extended_params.peer_address_type, 5800 advertising_set->extended_params.peer_address, 5801 advertising_set->extended_params.advertising_filter_policy, 5802 advertising_set->extended_params.advertising_tx_power, 5803 advertising_set->extended_params.primary_advertising_phy, 5804 advertising_set->extended_params.secondary_advertising_max_skip, 5805 advertising_set->extended_params.secondary_advertising_phy, 5806 advertising_set->extended_params.advertising_sid, 5807 advertising_set->extended_params.scan_request_notification_enable 5808 ); 5809 return true; 5810 } 5811 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA) != 0) { 5812 uint16_t pos = advertising_set->adv_data_pos; 5813 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->adv_data_len); 5814 uint16_t data_to_upload = btstack_min(advertising_set->adv_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5815 if ((operation & 0x02) != 0){ 5816 // last fragment or complete data 5817 operation |= 2; 5818 advertising_set->adv_data_pos = 0; 5819 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5820 } else { 5821 advertising_set->adv_data_pos += data_to_upload; 5822 } 5823 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5824 hci_send_cmd(&hci_le_set_extended_advertising_data, advertising_set->advertising_handle, operation, 0x01, data_to_upload, &advertising_set->adv_data[pos]); 5825 return true; 5826 } 5827 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA) != 0) { 5828 uint16_t pos = advertising_set->scan_data_pos; 5829 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->scan_data_len); 5830 uint16_t data_to_upload = btstack_min(advertising_set->scan_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5831 if ((operation & 0x02) != 0){ 5832 advertising_set->scan_data_pos = 0; 5833 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5834 } else { 5835 advertising_set->scan_data_pos += data_to_upload; 5836 } 5837 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5838 hci_send_cmd(&hci_le_set_extended_scan_response_data, operation, 0x03, 0x01, data_to_upload, &advertising_set->scan_data[pos]); 5839 return true; 5840 } 5841 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 5842 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS) != 0){ 5843 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 5844 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5845 hci_send_cmd(&hci_le_set_periodic_advertising_parameters, 5846 advertising_set->advertising_handle, 5847 advertising_set->periodic_params.periodic_advertising_interval_min, 5848 advertising_set->periodic_params.periodic_advertising_interval_max, 5849 advertising_set->periodic_params.periodic_advertising_properties); 5850 return true; 5851 } 5852 if ((advertising_set->tasks & LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA) != 0) { 5853 uint16_t pos = advertising_set->periodic_data_pos; 5854 uint8_t operation = hci_le_extended_advertising_operation_for_chunk(pos, advertising_set->periodic_data_len); 5855 uint16_t data_to_upload = btstack_min(advertising_set->periodic_data_len - pos, LE_EXTENDED_ADVERTISING_MAX_CHUNK_LEN); 5856 if ((operation & 0x02) != 0){ 5857 // last fragment or complete data 5858 operation |= 2; 5859 advertising_set->periodic_data_pos = 0; 5860 advertising_set->tasks &= ~LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 5861 } else { 5862 advertising_set->periodic_data_pos += data_to_upload; 5863 } 5864 hci_stack->le_advertising_set_in_current_command = advertising_set->advertising_handle; 5865 hci_send_cmd(&hci_le_set_periodic_advertising_data, advertising_set->advertising_handle, operation, data_to_upload, &advertising_set->periodic_data[pos]); 5866 return true; 5867 } 5868 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 5869 } 5870 } 5871 #endif 5872 5873 #endif 5874 5875 #ifdef ENABLE_LE_CENTRAL 5876 // if connect with whitelist was active and is not cancelled yet, wait until next time 5877 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 5878 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5879 // if periodic sync with advertiser list was active and is not cancelled yet, wait until next time 5880 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_CANCEL) return false; 5881 #endif 5882 #endif 5883 5884 // LE Whitelist Management 5885 if (whitelist_modification_pending){ 5886 // add/remove entries 5887 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5888 while (btstack_linked_list_iterator_has_next(&lit)){ 5889 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 5890 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 5891 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5892 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 5893 return true; 5894 } 5895 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 5896 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 5897 entry->state |= LE_WHITELIST_ON_CONTROLLER; 5898 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 5899 return true; 5900 } 5901 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 5902 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 5903 btstack_memory_whitelist_entry_free(entry); 5904 } 5905 } 5906 } 5907 5908 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 5909 // LE Resolving List Management 5910 if (resolving_list_supported) { 5911 uint16_t i; 5912 switch (hci_stack->le_resolving_list_state) { 5913 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 5914 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 5915 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 5916 return true; 5917 case LE_RESOLVING_LIST_READ_SIZE: 5918 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 5919 hci_send_cmd(&hci_le_read_resolving_list_size); 5920 return true; 5921 case LE_RESOLVING_LIST_SEND_CLEAR: 5922 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 5923 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 5924 sizeof(hci_stack->le_resolving_list_add_entries)); 5925 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 5926 sizeof(hci_stack->le_resolving_list_remove_entries)); 5927 hci_send_cmd(&hci_le_clear_resolving_list); 5928 return true; 5929 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 5930 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5931 uint8_t offset = i >> 3; 5932 uint8_t mask = 1 << (i & 7); 5933 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 5934 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 5935 bd_addr_t peer_identity_addreses; 5936 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5937 sm_key_t peer_irk; 5938 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5939 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5940 5941 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 5942 // trigger whitelist entry 'update' (work around for controller bug) 5943 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 5944 while (btstack_linked_list_iterator_has_next(&lit)) { 5945 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 5946 if (entry->address_type != peer_identity_addr_type) continue; 5947 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 5948 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 5949 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 5950 } 5951 #endif 5952 5953 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 5954 peer_identity_addreses); 5955 return true; 5956 } 5957 5958 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 5959 5960 /* fall through */ 5961 5962 case LE_RESOLVING_LIST_ADD_ENTRIES: 5963 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 5964 uint8_t offset = i >> 3; 5965 uint8_t mask = 1 << (i & 7); 5966 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 5967 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 5968 bd_addr_t peer_identity_addreses; 5969 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 5970 sm_key_t peer_irk; 5971 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 5972 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 5973 if (btstack_is_null(peer_irk, 16)) continue; 5974 const uint8_t *local_irk = gap_get_persistent_irk(); 5975 // command uses format specifier 'P' that stores 16-byte value without flip 5976 uint8_t local_irk_flipped[16]; 5977 uint8_t peer_irk_flipped[16]; 5978 reverse_128(local_irk, local_irk_flipped); 5979 reverse_128(peer_irk, peer_irk_flipped); 5980 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 5981 peer_irk_flipped, local_irk_flipped); 5982 return true; 5983 } 5984 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5985 break; 5986 5987 default: 5988 break; 5989 } 5990 } 5991 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 5992 #endif 5993 5994 #ifdef ENABLE_LE_CENTRAL 5995 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 5996 // LE Whitelist Management 5997 if (periodic_list_modification_pending){ 5998 // add/remove entries 5999 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 6000 while (btstack_linked_list_iterator_has_next(&lit)){ 6001 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 6002 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER){ 6003 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 6004 hci_send_cmd(&hci_le_remove_device_from_periodic_advertiser_list, entry->address_type, entry->address); 6005 return true; 6006 } 6007 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER){ 6008 entry->state &= ~LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 6009 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER; 6010 hci_send_cmd(&hci_le_add_device_to_periodic_advertiser_list, entry->address_type, entry->address, entry->sid); 6011 return true; 6012 } 6013 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER) == 0){ 6014 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 6015 btstack_memory_periodic_advertiser_list_entry_free(entry); 6016 } 6017 } 6018 } 6019 #endif 6020 #endif 6021 6022 // post-pone all actions until stack is fully working 6023 if (hci_stack->state != HCI_STATE_WORKING) return false; 6024 6025 // advertisements, active scanning, and creating connections requires random address to be set if using private address 6026 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 6027 6028 // Phase 4: restore state 6029 6030 #ifdef ENABLE_LE_CENTRAL 6031 // re-start scanning 6032 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 6033 hci_stack->le_scanning_active = true; 6034 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6035 if (hci_extended_advertising_supported()){ 6036 hci_send_cmd(&hci_le_set_extended_scan_enable, 1, 0, 0, 0); 6037 } else 6038 #endif 6039 { 6040 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 6041 } 6042 return true; 6043 } 6044 #endif 6045 6046 #ifdef ENABLE_LE_CENTRAL 6047 // re-start connecting 6048 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 6049 bd_addr_t null_addr; 6050 memset(null_addr, 0, 6); 6051 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6052 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6053 hci_send_cmd(&hci_le_create_connection, 6054 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 6055 hci_stack->le_connection_scan_window, // scan interval: 30 ms 6056 1, // use whitelist 6057 0, // peer address type 6058 null_addr, // peer bd addr 6059 hci_stack->le_connection_own_addr_type, // our addr type: 6060 hci_stack->le_connection_interval_min, // conn interval min 6061 hci_stack->le_connection_interval_max, // conn interval max 6062 hci_stack->le_connection_latency, // conn latency 6063 hci_stack->le_supervision_timeout, // conn latency 6064 hci_stack->le_minimum_ce_length, // min ce length 6065 hci_stack->le_maximum_ce_length // max ce length 6066 ); 6067 return true; 6068 } 6069 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6070 if (hci_stack->le_periodic_sync_state == LE_CONNECTING_IDLE){ 6071 switch(hci_stack->le_periodic_sync_request){ 6072 case LE_CONNECTING_DIRECT: 6073 case LE_CONNECTING_WHITELIST: 6074 hci_stack->le_periodic_sync_state = ((hci_stack->le_periodic_sync_options & 1) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 6075 hci_send_cmd(&hci_le_periodic_advertising_create_sync, 6076 hci_stack->le_periodic_sync_options, 6077 hci_stack->le_periodic_sync_advertising_sid, 6078 hci_stack->le_periodic_sync_advertiser_address_type, 6079 hci_stack->le_periodic_sync_advertiser_address, 6080 hci_stack->le_periodic_sync_skip, 6081 hci_stack->le_periodic_sync_timeout, 6082 hci_stack->le_periodic_sync_cte_type); 6083 return true; 6084 default: 6085 break; 6086 } 6087 } 6088 #endif 6089 #endif 6090 6091 #ifdef ENABLE_LE_PERIPHERAL 6092 // re-start advertising 6093 if (hci_stack->le_advertisements_enabled_for_current_roles && ((hci_stack->le_advertisements_state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6094 // check if advertisements should be enabled given 6095 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6096 hci_get_own_address_for_addr_type(hci_stack->le_advertisements_own_addr_type, hci_stack->le_advertisements_own_address); 6097 6098 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6099 if (hci_extended_advertising_supported()){ 6100 const uint8_t advertising_handles[] = { 0 }; 6101 const uint16_t durations[] = { 0 }; 6102 const uint16_t max_events[] = { 0 }; 6103 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6104 } else 6105 #endif 6106 { 6107 hci_send_cmd(&hci_le_set_advertise_enable, 1); 6108 } 6109 return true; 6110 } 6111 6112 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6113 if (hci_extended_advertising_supported()) { 6114 btstack_linked_list_iterator_t it; 6115 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 6116 while (btstack_linked_list_iterator_has_next(&it)) { 6117 le_advertising_set_t *advertising_set = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 6118 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_ACTIVE) == 0)){ 6119 advertising_set->state |= LE_ADVERTISEMENT_STATE_ACTIVE; 6120 const uint8_t advertising_handles[] = { advertising_set->advertising_handle }; 6121 const uint16_t durations[] = { advertising_set->enable_timeout }; 6122 const uint16_t max_events[] = { advertising_set->enable_max_scan_events }; 6123 hci_send_cmd(&hci_le_set_extended_advertising_enable, 1, 1, advertising_handles, durations, max_events); 6124 return true; 6125 } 6126 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 6127 if (((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED) != 0) && ((advertising_set->state & LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE) == 0)){ 6128 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ACTIVE; 6129 uint8_t enable = 1; 6130 if (advertising_set->periodic_include_adi){ 6131 enable |= 2; 6132 } 6133 hci_send_cmd(&hci_le_set_periodic_advertising_enable, enable, advertising_set->advertising_handle); 6134 return true; 6135 } 6136 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 6137 } 6138 } 6139 #endif 6140 #endif 6141 6142 return false; 6143 } 6144 6145 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6146 static bool hci_run_iso_tasks(void){ 6147 btstack_linked_list_iterator_t it; 6148 6149 // BIG 6150 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 6151 while (btstack_linked_list_iterator_has_next(&it)){ 6152 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 6153 switch (big->state){ 6154 case LE_AUDIO_BIG_STATE_CREATE: 6155 big->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6156 hci_send_cmd(&hci_le_create_big, 6157 big->params->big_handle, 6158 big->params->advertising_handle, 6159 big->params->num_bis, 6160 big->params->sdu_interval_us, 6161 big->params->max_sdu, 6162 big->params->max_transport_latency_ms, 6163 big->params->rtn, 6164 big->params->phy, 6165 big->params->packing, 6166 big->params->framing, 6167 big->params->encryption, 6168 big->params->broadcast_code); 6169 return true; 6170 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6171 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6172 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); 6173 return true; 6174 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6175 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6176 hci_send_cmd(&hci_le_terminate_big, big->big_handle, big->state_vars.status); 6177 return true; 6178 case LE_AUDIO_BIG_STATE_TERMINATE: 6179 big->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6180 hci_send_cmd(&hci_le_terminate_big, big->big_handle, ERROR_CODE_SUCCESS); 6181 return true; 6182 default: 6183 break; 6184 } 6185 } 6186 6187 // BIG Sync 6188 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 6189 while (btstack_linked_list_iterator_has_next(&it)){ 6190 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 6191 switch (big_sync->state){ 6192 case LE_AUDIO_BIG_STATE_CREATE: 6193 big_sync->state = LE_AUDIO_BIG_STATE_W4_ESTABLISHED; 6194 hci_send_cmd(&hci_le_big_create_sync, 6195 big_sync->params->big_handle, 6196 big_sync->params->sync_handle, 6197 big_sync->params->encryption, 6198 big_sync->params->broadcast_code, 6199 big_sync->params->mse, 6200 big_sync->params->big_sync_timeout_10ms, 6201 big_sync->params->num_bis, 6202 big_sync->params->bis_indices); 6203 return true; 6204 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 6205 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH; 6206 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); 6207 return true; 6208 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATHS_FAILED: 6209 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED_AFTER_SETUP_FAILED; 6210 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6211 return true; 6212 case LE_AUDIO_BIG_STATE_TERMINATE: 6213 big_sync->state = LE_AUDIO_BIG_STATE_W4_TERMINATED; 6214 hci_send_cmd(&hci_le_big_terminate_sync, big_sync->big_handle); 6215 return true; 6216 default: 6217 break; 6218 } 6219 } 6220 6221 return false; 6222 } 6223 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6224 #endif 6225 6226 static bool hci_run_general_pending_commands(void){ 6227 btstack_linked_item_t * it; 6228 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 6229 hci_connection_t * connection = (hci_connection_t *) it; 6230 6231 switch(connection->state){ 6232 case SEND_CREATE_CONNECTION: 6233 switch(connection->address_type){ 6234 #ifdef ENABLE_CLASSIC 6235 case BD_ADDR_TYPE_ACL: 6236 log_info("sending hci_create_connection"); 6237 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 6238 break; 6239 #endif 6240 default: 6241 #ifdef ENABLE_BLE 6242 #ifdef ENABLE_LE_CENTRAL 6243 log_info("sending hci_le_create_connection"); 6244 hci_stack->le_connection_own_addr_type = hci_stack->le_own_addr_type; 6245 hci_get_own_address_for_addr_type(hci_stack->le_connection_own_addr_type, hci_stack->le_connection_own_address); 6246 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 6247 if (hci_extended_advertising_supported()) { 6248 uint16_t le_connection_scan_interval[1] = { hci_stack->le_connection_scan_interval }; 6249 uint16_t le_connection_scan_window[1] = { hci_stack->le_connection_scan_window }; 6250 uint16_t le_connection_interval_min[1] = { hci_stack->le_connection_interval_min }; 6251 uint16_t le_connection_interval_max[1] = { hci_stack->le_connection_interval_max }; 6252 uint16_t le_connection_latency[1] = { hci_stack->le_connection_latency }; 6253 uint16_t le_supervision_timeout[1] = { hci_stack->le_supervision_timeout }; 6254 uint16_t le_minimum_ce_length[1] = { hci_stack->le_minimum_ce_length }; 6255 uint16_t le_maximum_ce_length[1] = { hci_stack->le_maximum_ce_length }; 6256 hci_send_cmd(&hci_le_extended_create_connection, 6257 0, // don't use whitelist 6258 hci_stack->le_connection_own_addr_type, // our addr type: 6259 connection->address_type, // peer address type 6260 connection->address, // peer bd addr 6261 1, // initiating PHY - 1M 6262 le_connection_scan_interval, // conn scan interval 6263 le_connection_scan_window, // conn scan windows 6264 le_connection_interval_min, // conn interval min 6265 le_connection_interval_max, // conn interval max 6266 le_connection_latency, // conn latency 6267 le_supervision_timeout, // conn latency 6268 le_minimum_ce_length, // min ce length 6269 le_maximum_ce_length // max ce length 6270 ); } 6271 else 6272 #endif 6273 { 6274 hci_send_cmd(&hci_le_create_connection, 6275 hci_stack->le_connection_scan_interval, // conn scan interval 6276 hci_stack->le_connection_scan_window, // conn scan windows 6277 0, // don't use whitelist 6278 connection->address_type, // peer address type 6279 connection->address, // peer bd addr 6280 hci_stack->le_connection_own_addr_type, // our addr type: 6281 hci_stack->le_connection_interval_min, // conn interval min 6282 hci_stack->le_connection_interval_max, // conn interval max 6283 hci_stack->le_connection_latency, // conn latency 6284 hci_stack->le_supervision_timeout, // conn latency 6285 hci_stack->le_minimum_ce_length, // min ce length 6286 hci_stack->le_maximum_ce_length // max ce length 6287 ); 6288 } 6289 connection->state = SENT_CREATE_CONNECTION; 6290 #endif 6291 #endif 6292 break; 6293 } 6294 return true; 6295 6296 #ifdef ENABLE_CLASSIC 6297 case RECEIVED_CONNECTION_REQUEST: 6298 connection->role = HCI_ROLE_SLAVE; 6299 if (connection->address_type == BD_ADDR_TYPE_ACL){ 6300 log_info("sending hci_accept_connection_request"); 6301 connection->state = ACCEPTED_CONNECTION_REQUEST; 6302 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 6303 return true; 6304 } 6305 break; 6306 #endif 6307 6308 #ifdef ENABLE_BLE 6309 #ifdef ENABLE_LE_CENTRAL 6310 case SEND_CANCEL_CONNECTION: 6311 connection->state = SENT_CANCEL_CONNECTION; 6312 hci_send_cmd(&hci_le_create_connection_cancel); 6313 return true; 6314 #endif 6315 #endif 6316 case SEND_DISCONNECT: 6317 connection->state = SENT_DISCONNECT; 6318 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6319 return true; 6320 6321 default: 6322 break; 6323 } 6324 6325 // no further commands if connection is about to get shut down 6326 if (connection->state == SENT_DISCONNECT) continue; 6327 6328 #ifdef ENABLE_CLASSIC 6329 6330 // Handling link key request requires remote supported features 6331 if (((connection->authentication_flags & AUTH_FLAG_HANDLE_LINK_KEY_REQUEST) != 0)){ 6332 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 6333 connectionClearAuthenticationFlags(connection, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 6334 6335 bool have_link_key = connection->link_key_type != INVALID_LINK_KEY; 6336 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(connection->link_key_type) >= connection->requested_security_level); 6337 if (have_link_key && security_level_sufficient){ 6338 hci_send_cmd(&hci_link_key_request_reply, connection->address, &connection->link_key); 6339 } else { 6340 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 6341 } 6342 return true; 6343 } 6344 6345 if (connection->authentication_flags & AUTH_FLAG_DENY_PIN_CODE_REQUEST){ 6346 log_info("denying to pin request"); 6347 connectionClearAuthenticationFlags(connection, AUTH_FLAG_DENY_PIN_CODE_REQUEST); 6348 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 6349 return true; 6350 } 6351 6352 // security assessment requires remote features 6353 if ((connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST) != 0){ 6354 connectionClearAuthenticationFlags(connection, AUTH_FLAG_RECV_IO_CAPABILITIES_REQUEST); 6355 hci_ssp_assess_security_on_io_cap_request(connection); 6356 // 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 6357 } 6358 6359 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY){ 6360 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 6361 // set authentication requirements: 6362 // - MITM = ssp_authentication_requirement (USER) | requested_security_level (dynamic) 6363 // - BONDING MODE: dedicated if requested, bondable otherwise. Drop bondable if not set for remote 6364 uint8_t authreq = hci_stack->ssp_authentication_requirement & 1; 6365 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 6366 authreq |= 1; 6367 } 6368 bool bonding = hci_stack->bondable; 6369 if (connection->authentication_flags & AUTH_FLAG_RECV_IO_CAPABILITIES_RESPONSE){ 6370 // if we have received IO Cap Response, we're in responder role 6371 bool remote_bonding = connection->io_cap_response_auth_req >= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6372 if (bonding && !remote_bonding){ 6373 log_info("Remote not bonding, dropping local flag"); 6374 bonding = false; 6375 } 6376 } 6377 if (bonding){ 6378 if (connection->bonding_flags & BONDING_DEDICATED){ 6379 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 6380 } else { 6381 authreq |= SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 6382 } 6383 } 6384 uint8_t have_oob_data = 0; 6385 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6386 if (connection->classic_oob_c_192 != NULL){ 6387 have_oob_data |= 1; 6388 } 6389 if (connection->classic_oob_c_256 != NULL){ 6390 have_oob_data |= 2; 6391 } 6392 #endif 6393 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 6394 return true; 6395 } 6396 6397 if (connection->authentication_flags & AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 6398 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 6399 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 6400 return true; 6401 } 6402 6403 #ifdef ENABLE_CLASSIC_PAIRING_OOB 6404 if (connection->authentication_flags & AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY){ 6405 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_REMOTE_OOB_DATA_REPLY); 6406 const uint8_t zero[16] = { 0 }; 6407 const uint8_t * r_192 = zero; 6408 const uint8_t * c_192 = zero; 6409 const uint8_t * r_256 = zero; 6410 const uint8_t * c_256 = zero; 6411 // verify P-256 OOB 6412 if ((connection->classic_oob_c_256 != NULL) && hci_command_supported(SUPPORTED_HCI_COMMAND_REMOTE_OOB_EXTENDED_DATA_REQUEST_REPLY)) { 6413 c_256 = connection->classic_oob_c_256; 6414 if (connection->classic_oob_r_256 != NULL) { 6415 r_256 = connection->classic_oob_r_256; 6416 } 6417 } 6418 // verify P-192 OOB 6419 if ((connection->classic_oob_c_192 != NULL)) { 6420 c_192 = connection->classic_oob_c_192; 6421 if (connection->classic_oob_r_192 != NULL) { 6422 r_192 = connection->classic_oob_r_192; 6423 } 6424 } 6425 6426 // assess security 6427 bool need_level_4 = hci_stack->gap_secure_connections_only_mode || (connection->requested_security_level == LEVEL_4); 6428 bool can_reach_level_4 = hci_remote_sc_enabled(connection) && (c_256 != NULL); 6429 if (need_level_4 && !can_reach_level_4){ 6430 log_info("Level 4 required, but not possible -> abort"); 6431 hci_pairing_complete(connection, ERROR_CODE_INSUFFICIENT_SECURITY); 6432 // send oob negative reply 6433 c_256 = NULL; 6434 c_192 = NULL; 6435 } 6436 6437 // Reply 6438 if (c_256 != zero) { 6439 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 6440 } else if (c_192 != zero){ 6441 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 6442 } else { 6443 hci_stack->classic_oob_con_handle = connection->con_handle; 6444 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 6445 } 6446 return true; 6447 } 6448 #endif 6449 6450 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_REPLY){ 6451 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_REPLY); 6452 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 6453 return true; 6454 } 6455 6456 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY){ 6457 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_CONFIRM_NEGATIVE_REPLY); 6458 hci_send_cmd(&hci_user_confirmation_request_negative_reply, &connection->address); 6459 return true; 6460 } 6461 6462 if (connection->authentication_flags & AUTH_FLAG_SEND_USER_PASSKEY_REPLY){ 6463 connectionClearAuthenticationFlags(connection, AUTH_FLAG_SEND_USER_PASSKEY_REPLY); 6464 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 6465 return true; 6466 } 6467 6468 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 6469 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 6470 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 6471 connection->state = SENT_DISCONNECT; 6472 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 6473 return true; 6474 } 6475 6476 if ((connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST) && ((connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0)){ 6477 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 6478 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 6479 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 6480 return true; 6481 } 6482 6483 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 6484 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 6485 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 6486 return true; 6487 } 6488 6489 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 6490 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 6491 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 6492 return true; 6493 } 6494 6495 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 6496 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 6497 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 6498 return true; 6499 } 6500 6501 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 6502 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 6503 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 6504 return true; 6505 } 6506 6507 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 6508 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 6509 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 6510 return true; 6511 } 6512 #endif 6513 6514 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 6515 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 6516 #ifdef ENABLE_CLASSIC 6517 hci_pairing_complete(connection, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_SECURITY_REASONS); 6518 #endif 6519 if (connection->state != SENT_DISCONNECT){ 6520 connection->state = SENT_DISCONNECT; 6521 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 6522 return true; 6523 } 6524 } 6525 6526 #ifdef ENABLE_CLASSIC 6527 uint16_t sniff_min_interval; 6528 switch (connection->sniff_min_interval){ 6529 case 0: 6530 break; 6531 case 0xffff: 6532 connection->sniff_min_interval = 0; 6533 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 6534 return true; 6535 default: 6536 sniff_min_interval = connection->sniff_min_interval; 6537 connection->sniff_min_interval = 0; 6538 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 6539 return true; 6540 } 6541 6542 if (connection->sniff_subrating_max_latency != 0xffff){ 6543 uint16_t max_latency = connection->sniff_subrating_max_latency; 6544 connection->sniff_subrating_max_latency = 0; 6545 hci_send_cmd(&hci_sniff_subrating, connection->con_handle, max_latency, connection->sniff_subrating_min_remote_timeout, connection->sniff_subrating_min_local_timeout); 6546 return true; 6547 } 6548 6549 if (connection->qos_service_type != HCI_SERVICE_TYPE_INVALID){ 6550 uint8_t service_type = (uint8_t) connection->qos_service_type; 6551 connection->qos_service_type = HCI_SERVICE_TYPE_INVALID; 6552 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); 6553 return true; 6554 } 6555 6556 if (connection->request_role != HCI_ROLE_INVALID){ 6557 hci_role_t role = connection->request_role; 6558 connection->request_role = HCI_ROLE_INVALID; 6559 hci_send_cmd(&hci_switch_role_command, connection->address, role); 6560 return true; 6561 } 6562 #endif 6563 6564 if (connection->gap_connection_tasks != 0){ 6565 #ifdef ENABLE_CLASSIC 6566 if ((connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT) != 0){ 6567 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_AUTOMATIC_FLUSH_TIMEOUT; 6568 hci_send_cmd(&hci_write_automatic_flush_timeout, connection->con_handle, hci_stack->automatic_flush_timeout); 6569 return true; 6570 } 6571 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT){ 6572 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_WRITE_SUPERVISION_TIMEOUT; 6573 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 6574 return true; 6575 } 6576 #endif 6577 if (connection->gap_connection_tasks & GAP_CONNECTION_TASK_READ_RSSI){ 6578 connection->gap_connection_tasks &= ~GAP_CONNECTION_TASK_READ_RSSI; 6579 hci_send_cmd(&hci_read_rssi, connection->con_handle); 6580 return true; 6581 } 6582 } 6583 6584 #ifdef ENABLE_BLE 6585 switch (connection->le_con_parameter_update_state){ 6586 // response to L2CAP CON PARAMETER UPDATE REQUEST 6587 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 6588 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6589 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 6590 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6591 0x0000, 0xffff); 6592 return true; 6593 case CON_PARAMETER_UPDATE_REPLY: 6594 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6595 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 6596 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 6597 0x0000, 0xffff); 6598 return true; 6599 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 6600 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 6601 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, connection->con_handle, 6602 ERROR_CODE_UNACCEPTABLE_CONNECTION_PARAMETERS); 6603 return true; 6604 default: 6605 break; 6606 } 6607 if (connection->le_phy_update_all_phys != 0xffu){ 6608 uint8_t all_phys = connection->le_phy_update_all_phys; 6609 connection->le_phy_update_all_phys = 0xff; 6610 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); 6611 return true; 6612 } 6613 #endif 6614 } 6615 return false; 6616 } 6617 6618 static void hci_run(void){ 6619 6620 // stack state sub statemachines 6621 switch (hci_stack->state) { 6622 case HCI_STATE_INITIALIZING: 6623 hci_initializing_run(); 6624 break; 6625 case HCI_STATE_HALTING: 6626 hci_halting_run(); 6627 break; 6628 case HCI_STATE_FALLING_ASLEEP: 6629 hci_falling_asleep_run(); 6630 break; 6631 default: 6632 break; 6633 } 6634 6635 // allow to run after initialization to working transition 6636 if (hci_stack->state != HCI_STATE_WORKING){ 6637 return; 6638 } 6639 6640 bool done; 6641 6642 // send continuation fragments first, as they block the prepared packet buffer 6643 done = hci_run_acl_fragments(); 6644 if (done) return; 6645 6646 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6647 done = hci_run_iso_fragments(); 6648 if (done) return; 6649 #endif 6650 6651 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 6652 // send host num completed packets next as they don't require num_cmd_packets > 0 6653 if (!hci_can_send_comand_packet_transport()) return; 6654 if (hci_stack->host_completed_packets){ 6655 hci_host_num_completed_packets(); 6656 return; 6657 } 6658 #endif 6659 6660 if (!hci_can_send_command_packet_now()) return; 6661 6662 // global/non-connection oriented commands 6663 6664 6665 #ifdef ENABLE_CLASSIC 6666 // general gap classic 6667 done = hci_run_general_gap_classic(); 6668 if (done) return; 6669 #endif 6670 6671 #ifdef ENABLE_BLE 6672 // general gap le 6673 done = hci_run_general_gap_le(); 6674 if (done) return; 6675 6676 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6677 // ISO related tasks, e.g. BIG create/terminate/sync 6678 done = hci_run_iso_tasks(); 6679 if (done) return; 6680 #endif 6681 #endif 6682 6683 // send pending HCI commands 6684 hci_run_general_pending_commands(); 6685 } 6686 6687 uint8_t hci_send_cmd_packet(uint8_t *packet, int size){ 6688 // house-keeping 6689 6690 #ifdef ENABLE_CLASSIC 6691 bd_addr_t addr; 6692 hci_connection_t * conn; 6693 #endif 6694 #ifdef ENABLE_LE_CENTRAL 6695 uint8_t initiator_filter_policy; 6696 #endif 6697 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6698 uint8_t i; 6699 uint8_t num_cis; 6700 hci_con_handle_t cis_handle; 6701 uint8_t status; 6702 #endif 6703 6704 uint16_t opcode = little_endian_read_16(packet, 0); 6705 switch (opcode) { 6706 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 6707 hci_stack->loopback_mode = packet[3]; 6708 break; 6709 6710 #ifdef ENABLE_CLASSIC 6711 case HCI_OPCODE_HCI_CREATE_CONNECTION: 6712 reverse_bd_addr(&packet[3], addr); 6713 log_info("Create_connection to %s", bd_addr_to_str(addr)); 6714 6715 // CVE-2020-26555: reject outgoing connection to device with same BD ADDR 6716 if (memcmp(hci_stack->local_bd_addr, addr, 6) == 0) { 6717 hci_emit_connection_complete(addr, 0, ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR); 6718 return ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 6719 } 6720 6721 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6722 if (!conn) { 6723 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6724 if (!conn) { 6725 // notify client that alloc failed 6726 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 6727 return BTSTACK_MEMORY_ALLOC_FAILED; // packet not sent to controller 6728 } 6729 conn->state = SEND_CREATE_CONNECTION; 6730 conn->role = HCI_ROLE_MASTER; 6731 } 6732 6733 log_info("conn state %u", conn->state); 6734 // TODO: L2CAP should not send create connection command, instead a (new) gap function should be used 6735 switch (conn->state) { 6736 // if connection active exists 6737 case OPEN: 6738 // and OPEN, emit connection complete command 6739 hci_emit_connection_complete(addr, conn->con_handle, ERROR_CODE_SUCCESS); 6740 // packet not sent to controller 6741 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6742 case RECEIVED_DISCONNECTION_COMPLETE: 6743 // create connection triggered in disconnect complete event, let's do it now 6744 break; 6745 case SEND_CREATE_CONNECTION: 6746 #ifdef ENABLE_HCI_SERIALIZED_CONTROLLER_OPERATIONS 6747 if (hci_classic_operation_active()){ 6748 return ERROR_CODE_SUCCESS; 6749 } 6750 #endif 6751 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 6752 break; 6753 default: 6754 // otherwise, just ignore as it is already in the open process 6755 // packet not sent to controller 6756 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 6757 } 6758 conn->state = SENT_CREATE_CONNECTION; 6759 6760 // track outgoing connection 6761 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 6762 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 6763 break; 6764 6765 #if defined (ENABLE_SCO_OVER_HCI) || defined (HAVE_SCO_TRANSPORT) 6766 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 6767 // setup_synchronous_connection? Voice setting at offset 22 6768 // TODO: compare to current setting if sco connection already active 6769 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 6770 break; 6771 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 6772 // accept_synchronous_connection? Voice setting at offset 18 6773 // TODO: compare to current setting if sco connection already active 6774 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 6775 // track outgoing connection 6776 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_SCO; 6777 reverse_bd_addr(&packet[3], hci_stack->outgoing_addr); 6778 break; 6779 #endif 6780 #endif 6781 6782 #ifdef ENABLE_BLE 6783 #ifdef ENABLE_LE_CENTRAL 6784 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 6785 // white list used? 6786 initiator_filter_policy = packet[7]; 6787 switch (initiator_filter_policy) { 6788 case 0: 6789 // whitelist not used 6790 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 6791 break; 6792 case 1: 6793 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 6794 break; 6795 default: 6796 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 6797 break; 6798 } 6799 // track outgoing connection 6800 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 6801 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 6802 break; 6803 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 6804 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 6805 break; 6806 #endif 6807 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 6808 #ifdef ENABLE_LE_CENTRAL 6809 case HCI_OPCODE_HCI_LE_CREATE_CIS: 6810 status = ERROR_CODE_SUCCESS; 6811 num_cis = packet[3]; 6812 // setup hci_iso_streams 6813 for (i=0;i<num_cis;i++){ 6814 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 4 + (4 * i)); 6815 status = hci_iso_stream_create(cis_handle, 0xff); 6816 if (status != ERROR_CODE_SUCCESS) { 6817 break; 6818 } 6819 } 6820 // free structs on error 6821 if (status != ERROR_CODE_SUCCESS){ 6822 hci_iso_stream_requested_finalize(0xff); 6823 return status; 6824 } 6825 break; 6826 #endif /* ENABLE_LE_CENTRAL */ 6827 #ifdef ENABLE_LE_PERIPHERAL 6828 case HCI_OPCODE_HCI_LE_ACCEPT_CIS_REQUEST: 6829 cis_handle = (hci_con_handle_t) little_endian_read_16(packet, 3); 6830 status = hci_iso_stream_create(cis_handle, 0xff); 6831 if (status != ERROR_CODE_SUCCESS){ 6832 return status; 6833 } 6834 break; 6835 #endif /* ENABLE_LE_PERIPHERAL */ 6836 #endif /* ENABLE_LE_ISOCHRONOUS_STREAMS */ 6837 #endif /* ENABLE_BLE */ 6838 default: 6839 break; 6840 } 6841 6842 hci_stack->num_cmd_packets--; 6843 6844 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 6845 int err = hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 6846 if (err != 0){ 6847 return ERROR_CODE_HARDWARE_FAILURE; 6848 } 6849 return ERROR_CODE_SUCCESS; 6850 } 6851 6852 // disconnect because of security block 6853 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 6854 hci_connection_t * connection = hci_connection_for_handle(con_handle); 6855 if (!connection) return; 6856 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 6857 } 6858 6859 6860 // Configure Secure Simple Pairing 6861 6862 #ifdef ENABLE_CLASSIC 6863 6864 // enable will enable SSP during init 6865 void gap_ssp_set_enable(int enable){ 6866 hci_stack->ssp_enable = enable; 6867 } 6868 6869 static int hci_local_ssp_activated(void){ 6870 return gap_ssp_supported() && hci_stack->ssp_enable; 6871 } 6872 6873 // if set, BTstack will respond to io capability request using authentication requirement 6874 void gap_ssp_set_io_capability(int io_capability){ 6875 hci_stack->ssp_io_capability = io_capability; 6876 } 6877 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 6878 hci_stack->ssp_authentication_requirement = authentication_requirement; 6879 } 6880 6881 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 6882 void gap_ssp_set_auto_accept(int auto_accept){ 6883 hci_stack->ssp_auto_accept = auto_accept; 6884 } 6885 6886 void gap_secure_connections_enable(bool enable){ 6887 hci_stack->secure_connections_enable = enable; 6888 } 6889 bool gap_secure_connections_active(void){ 6890 return hci_stack->secure_connections_active; 6891 } 6892 6893 #endif 6894 6895 // va_list part of hci_send_cmd 6896 uint8_t hci_send_cmd_va_arg(const hci_cmd_t * cmd, va_list argptr){ 6897 if (!hci_can_send_command_packet_now()){ 6898 log_error("hci_send_cmd called but cannot send packet now"); 6899 return ERROR_CODE_COMMAND_DISALLOWED; 6900 } 6901 6902 // for HCI INITIALIZATION 6903 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 6904 hci_stack->last_cmd_opcode = cmd->opcode; 6905 6906 hci_reserve_packet_buffer(); 6907 uint8_t * packet = hci_stack->hci_packet_buffer; 6908 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 6909 uint8_t status = hci_send_cmd_packet(packet, size); 6910 6911 // release packet buffer on error or for synchronous transport implementations 6912 if ((status != ERROR_CODE_SUCCESS) || hci_transport_synchronous()){ 6913 hci_release_packet_buffer(); 6914 hci_emit_transport_packet_sent(); 6915 } 6916 6917 return status; 6918 } 6919 6920 /** 6921 * pre: numcmds >= 0 - it's allowed to send a command to the controller 6922 */ 6923 uint8_t hci_send_cmd(const hci_cmd_t * cmd, ...){ 6924 va_list argptr; 6925 va_start(argptr, cmd); 6926 uint8_t status = hci_send_cmd_va_arg(cmd, argptr); 6927 va_end(argptr); 6928 return status; 6929 } 6930 6931 // Create various non-HCI events. 6932 // TODO: generalize, use table similar to hci_create_command 6933 6934 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 6935 // dump packet 6936 if (dump) { 6937 hci_dump_packet( HCI_EVENT_PACKET, 1, event, size); 6938 } 6939 6940 // dispatch to all event handlers 6941 btstack_linked_list_iterator_t it; 6942 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 6943 while (btstack_linked_list_iterator_has_next(&it)){ 6944 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 6945 entry->callback(HCI_EVENT_PACKET, 0, event, size); 6946 } 6947 } 6948 6949 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 6950 if (!hci_stack->acl_packet_handler) return; 6951 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 6952 } 6953 6954 #ifdef ENABLE_CLASSIC 6955 static void hci_notify_if_sco_can_send_now(void){ 6956 // notify SCO sender if waiting 6957 if (!hci_stack->sco_waiting_for_can_send_now) return; 6958 if (hci_can_send_sco_packet_now()){ 6959 hci_stack->sco_waiting_for_can_send_now = 0; 6960 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 6961 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 6962 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 6963 } 6964 } 6965 6966 // parsing end emitting has been merged to reduce code size 6967 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 6968 uint8_t event[28+GAP_INQUIRY_MAX_NAME_LEN]; 6969 6970 uint8_t * eir_data; 6971 ad_context_t context; 6972 const uint8_t * name; 6973 uint8_t name_len; 6974 6975 if (size < 3) return; 6976 6977 int event_type = hci_event_packet_get_type(packet); 6978 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 6979 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 6980 6981 switch (event_type){ 6982 case HCI_EVENT_INQUIRY_RESULT: 6983 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 6984 if (size != (3 + (num_responses * 14))) return; 6985 break; 6986 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 6987 if (size != 257) return; 6988 if (num_responses != 1) return; 6989 break; 6990 default: 6991 return; 6992 } 6993 6994 // event[1] is set at the end 6995 int i; 6996 for (i=0; i<num_responses;i++){ 6997 memset(event, 0, sizeof(event)); 6998 event[0] = GAP_EVENT_INQUIRY_RESULT; 6999 uint8_t event_size = 27; // if name is not set by EIR 7000 7001 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 7002 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 7003 (void)memcpy(&event[9], 7004 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 7005 3); // class of device 7006 (void)memcpy(&event[12], 7007 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 7008 2); // clock offset 7009 7010 switch (event_type){ 7011 case HCI_EVENT_INQUIRY_RESULT: 7012 // 14,15,16,17 = 0, size 18 7013 break; 7014 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 7015 event[14] = 1; 7016 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7017 // 16,17 = 0, size 18 7018 break; 7019 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 7020 event[14] = 1; 7021 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 7022 // EIR packets only contain a single inquiry response 7023 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 7024 name = NULL; 7025 // Iterate over EIR data 7026 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 7027 uint8_t data_type = ad_iterator_get_data_type(&context); 7028 uint8_t data_size = ad_iterator_get_data_len(&context); 7029 const uint8_t * data = ad_iterator_get_data(&context); 7030 // Prefer Complete Local Name over Shortened Local Name 7031 switch (data_type){ 7032 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 7033 if (name) continue; 7034 /* fall through */ 7035 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 7036 name = data; 7037 name_len = data_size; 7038 break; 7039 case BLUETOOTH_DATA_TYPE_DEVICE_ID: 7040 if (data_size != 8) break; 7041 event[16] = 1; 7042 memcpy(&event[17], data, 8); 7043 break; 7044 default: 7045 break; 7046 } 7047 } 7048 if (name){ 7049 event[25] = 1; 7050 // truncate name if needed 7051 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 7052 event[26] = len; 7053 (void)memcpy(&event[27], name, len); 7054 event_size += len; 7055 } 7056 break; 7057 default: 7058 return; 7059 } 7060 event[1] = event_size - 2; 7061 hci_emit_event(event, event_size, 1); 7062 } 7063 } 7064 #endif 7065 7066 void hci_emit_state(void){ 7067 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 7068 uint8_t event[3]; 7069 event[0] = BTSTACK_EVENT_STATE; 7070 event[1] = sizeof(event) - 2u; 7071 event[2] = hci_stack->state; 7072 hci_emit_event(event, sizeof(event), 1); 7073 } 7074 7075 #ifdef ENABLE_CLASSIC 7076 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 7077 uint8_t event[13]; 7078 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 7079 event[1] = sizeof(event) - 2; 7080 event[2] = status; 7081 little_endian_store_16(event, 3, con_handle); 7082 reverse_bd_addr(address, &event[5]); 7083 event[11] = 1; // ACL connection 7084 event[12] = 0; // encryption disabled 7085 hci_emit_event(event, sizeof(event), 1); 7086 } 7087 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 7088 if (disable_l2cap_timeouts) return; 7089 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 7090 uint8_t event[4]; 7091 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 7092 event[1] = sizeof(event) - 2; 7093 little_endian_store_16(event, 2, conn->con_handle); 7094 hci_emit_event(event, sizeof(event), 1); 7095 } 7096 #endif 7097 7098 #ifdef ENABLE_BLE 7099 #ifdef ENABLE_LE_CENTRAL 7100 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){ 7101 uint8_t event[21]; 7102 event[0] = HCI_EVENT_LE_META; 7103 event[1] = sizeof(event) - 2u; 7104 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 7105 event[3] = status; 7106 little_endian_store_16(event, 4, con_handle); 7107 event[6] = 0; // TODO: role 7108 event[7] = address_type; 7109 reverse_bd_addr(address, &event[8]); 7110 little_endian_store_16(event, 14, 0); // interval 7111 little_endian_store_16(event, 16, 0); // latency 7112 little_endian_store_16(event, 18, 0); // supervision timeout 7113 event[20] = 0; // master clock accuracy 7114 hci_emit_event(event, sizeof(event), 1); 7115 } 7116 #endif 7117 #endif 7118 7119 static void hci_emit_transport_packet_sent(void){ 7120 // notify upper stack that it might be possible to send again 7121 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 7122 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 7123 } 7124 7125 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 7126 uint8_t event[6]; 7127 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 7128 event[1] = sizeof(event) - 2u; 7129 event[2] = 0; // status = OK 7130 little_endian_store_16(event, 3, con_handle); 7131 event[5] = reason; 7132 hci_emit_event(event, sizeof(event), 1); 7133 } 7134 7135 static void hci_emit_nr_connections_changed(void){ 7136 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 7137 uint8_t event[3]; 7138 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 7139 event[1] = sizeof(event) - 2u; 7140 event[2] = nr_hci_connections(); 7141 hci_emit_event(event, sizeof(event), 1); 7142 } 7143 7144 static void hci_emit_hci_open_failed(void){ 7145 log_info("BTSTACK_EVENT_POWERON_FAILED"); 7146 uint8_t event[2]; 7147 event[0] = BTSTACK_EVENT_POWERON_FAILED; 7148 event[1] = sizeof(event) - 2u; 7149 hci_emit_event(event, sizeof(event), 1); 7150 } 7151 7152 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 7153 log_info("hci_emit_dedicated_bonding_result %u ", status); 7154 uint8_t event[9]; 7155 int pos = 0; 7156 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 7157 event[pos++] = sizeof(event) - 2u; 7158 event[pos++] = status; 7159 reverse_bd_addr(address, &event[pos]); 7160 hci_emit_event(event, sizeof(event), 1); 7161 } 7162 7163 7164 #ifdef ENABLE_CLASSIC 7165 7166 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 7167 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 7168 uint8_t event[5]; 7169 int pos = 0; 7170 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 7171 event[pos++] = sizeof(event) - 2; 7172 little_endian_store_16(event, 2, con_handle); 7173 pos += 2; 7174 event[pos++] = level; 7175 hci_emit_event(event, sizeof(event), 1); 7176 } 7177 7178 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 7179 if (!connection) return LEVEL_0; 7180 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 7181 // BIAS: we only consider Authenticated if the connection is already encrypted, which requires that both sides have link key 7182 if ((connection->authentication_flags & AUTH_FLAG_CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 7183 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 7184 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 7185 // LEVEL 4 always requires 128 bit encrytion key size 7186 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 7187 security_level = LEVEL_3; 7188 } 7189 return security_level; 7190 } 7191 7192 static void hci_emit_scan_mode_changed(uint8_t discoverable, uint8_t connectable){ 7193 uint8_t event[4]; 7194 event[0] = BTSTACK_EVENT_SCAN_MODE_CHANGED; 7195 event[1] = sizeof(event) - 2; 7196 event[2] = discoverable; 7197 event[3] = connectable; 7198 hci_emit_event(event, sizeof(event), 1); 7199 } 7200 7201 // query if remote side supports eSCO 7202 bool hci_remote_esco_supported(hci_con_handle_t con_handle){ 7203 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7204 if (!connection) return false; 7205 return (connection->remote_supported_features[0] & 1) != 0; 7206 } 7207 7208 static bool hci_ssp_supported(hci_connection_t * connection){ 7209 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 7210 return (connection->bonding_flags & mask) == mask; 7211 } 7212 7213 // query if remote side supports SSP 7214 bool hci_remote_ssp_supported(hci_con_handle_t con_handle){ 7215 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7216 if (!connection) return false; 7217 return hci_ssp_supported(connection) ? 1 : 0; 7218 } 7219 7220 bool gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 7221 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 7222 } 7223 7224 /** 7225 * Check if remote supported features query has completed 7226 */ 7227 bool hci_remote_features_available(hci_con_handle_t handle){ 7228 hci_connection_t * connection = hci_connection_for_handle(handle); 7229 if (!connection) return false; 7230 return (connection->bonding_flags & BONDING_RECEIVED_REMOTE_FEATURES) != 0; 7231 } 7232 7233 /** 7234 * Trigger remote supported features query 7235 */ 7236 7237 static void hci_trigger_remote_features_for_connection(hci_connection_t * connection){ 7238 if ((connection->bonding_flags & (BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_RECEIVED_REMOTE_FEATURES)) == 0){ 7239 connection->bonding_flags |= BONDING_REMOTE_FEATURES_QUERY_ACTIVE | BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 7240 } 7241 } 7242 7243 void hci_remote_features_query(hci_con_handle_t con_handle){ 7244 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7245 if (!connection) return; 7246 hci_trigger_remote_features_for_connection(connection); 7247 hci_run(); 7248 } 7249 7250 // GAP API 7251 /** 7252 * @bbrief enable/disable bonding. default is enabled 7253 * @praram enabled 7254 */ 7255 void gap_set_bondable_mode(int enable){ 7256 hci_stack->bondable = enable ? 1 : 0; 7257 } 7258 /** 7259 * @brief Get bondable mode. 7260 * @return 1 if bondable 7261 */ 7262 int gap_get_bondable_mode(void){ 7263 return hci_stack->bondable; 7264 } 7265 7266 /** 7267 * @brief map link keys to security levels 7268 */ 7269 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 7270 switch (link_key_type){ 7271 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7272 return LEVEL_4; 7273 case COMBINATION_KEY: 7274 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7275 return LEVEL_3; 7276 default: 7277 return LEVEL_2; 7278 } 7279 } 7280 7281 /** 7282 * @brief map link keys to secure connection yes/no 7283 */ 7284 bool gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 7285 switch (link_key_type){ 7286 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7287 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7288 return true; 7289 default: 7290 return false; 7291 } 7292 } 7293 7294 /** 7295 * @brief map link keys to authenticated 7296 */ 7297 bool gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 7298 switch (link_key_type){ 7299 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 7300 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 7301 return true; 7302 default: 7303 return false; 7304 } 7305 } 7306 7307 bool gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 7308 log_info("gap_mitm_protection_required_for_security_level %u", level); 7309 return level > LEVEL_2; 7310 } 7311 7312 /** 7313 * @brief get current security level 7314 */ 7315 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 7316 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7317 if (!connection) return LEVEL_0; 7318 return gap_security_level_for_connection(connection); 7319 } 7320 7321 /** 7322 * @brief request connection to device to 7323 * @result GAP_AUTHENTICATION_RESULT 7324 */ 7325 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 7326 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7327 if (!connection){ 7328 hci_emit_security_level(con_handle, LEVEL_0); 7329 return; 7330 } 7331 7332 btstack_assert(hci_is_le_connection(connection) == false); 7333 7334 // 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) 7335 // available on the BR/EDR physical transport require Security Mode 4, Level 4 " 7336 if (hci_stack->gap_secure_connections_only_mode && (requested_level != LEVEL_0)){ 7337 requested_level = LEVEL_4; 7338 } 7339 7340 gap_security_level_t current_level = gap_security_level(con_handle); 7341 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 7342 requested_level, connection->requested_security_level, current_level); 7343 7344 // authentication active if authentication request was sent or planned level > 0 7345 bool authentication_active = ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) || (connection->requested_security_level > LEVEL_0); 7346 if (authentication_active){ 7347 // authentication already active 7348 if (connection->requested_security_level < requested_level){ 7349 // increase requested level as new level is higher 7350 // TODO: handle re-authentication when done 7351 connection->requested_security_level = requested_level; 7352 } 7353 } else { 7354 // no request active, notify if security sufficient 7355 if (requested_level <= current_level){ 7356 hci_emit_security_level(con_handle, current_level); 7357 return; 7358 } 7359 7360 // store request 7361 connection->requested_security_level = requested_level; 7362 7363 // start to authenticate connection 7364 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 7365 7366 // request remote features if not already active, also trigger hci_run 7367 hci_remote_features_query(con_handle); 7368 } 7369 } 7370 7371 /** 7372 * @brief start dedicated bonding with device. disconnect after bonding 7373 * @param device 7374 * @param request MITM protection 7375 * @result GAP_DEDICATED_BONDING_COMPLETE 7376 */ 7377 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 7378 7379 // create connection state machine 7380 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 7381 7382 if (!connection){ 7383 return BTSTACK_MEMORY_ALLOC_FAILED; 7384 } 7385 7386 // delete linkn key 7387 gap_drop_link_key_for_bd_addr(device); 7388 7389 // configure LEVEL_2/3, dedicated bonding 7390 connection->state = SEND_CREATE_CONNECTION; 7391 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 7392 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 7393 connection->bonding_flags = BONDING_DEDICATED; 7394 7395 // wait for GAP Security Result and send GAP Dedicated Bonding complete 7396 7397 // handle: connnection failure (connection complete != ok) 7398 // handle: authentication failure 7399 // handle: disconnect on done 7400 7401 hci_run(); 7402 7403 return 0; 7404 } 7405 7406 void gap_set_local_name(const char * local_name){ 7407 hci_stack->local_name = local_name; 7408 hci_stack->gap_tasks_classic |= GAP_TASK_SET_LOCAL_NAME; 7409 // also update EIR if not set by user 7410 if (hci_stack->eir_data == NULL){ 7411 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 7412 } 7413 hci_run(); 7414 } 7415 #endif 7416 7417 7418 #ifdef ENABLE_BLE 7419 7420 #ifdef ENABLE_LE_CENTRAL 7421 void gap_start_scan(void){ 7422 hci_stack->le_scanning_enabled = true; 7423 hci_run(); 7424 } 7425 7426 void gap_stop_scan(void){ 7427 hci_stack->le_scanning_enabled = false; 7428 hci_run(); 7429 } 7430 7431 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 7432 hci_stack->le_scan_type = scan_type; 7433 hci_stack->le_scan_filter_policy = scanning_filter_policy; 7434 hci_stack->le_scan_interval = scan_interval; 7435 hci_stack->le_scan_window = scan_window; 7436 hci_stack->le_scanning_param_update = true; 7437 hci_run(); 7438 } 7439 7440 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 7441 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 7442 } 7443 7444 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 7445 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 7446 if (!conn){ 7447 // disallow if le connection is already outgoing 7448 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 7449 log_error("le connection already active"); 7450 return ERROR_CODE_COMMAND_DISALLOWED; 7451 } 7452 7453 log_info("gap_connect: no connection exists yet, creating context"); 7454 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 7455 if (!conn){ 7456 // notify client that alloc failed 7457 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 7458 log_info("gap_connect: failed to alloc hci_connection_t"); 7459 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 7460 } 7461 7462 // set le connecting state 7463 if (hci_is_le_connection_type(addr_type)){ 7464 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 7465 } 7466 7467 conn->state = SEND_CREATE_CONNECTION; 7468 log_info("gap_connect: send create connection next"); 7469 hci_run(); 7470 return ERROR_CODE_SUCCESS; 7471 } 7472 7473 if (!hci_is_le_connection(conn) || 7474 (conn->state == SEND_CREATE_CONNECTION) || 7475 (conn->state == SENT_CREATE_CONNECTION)) { 7476 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 7477 log_error("gap_connect: classic connection or connect is already being created"); 7478 return GATT_CLIENT_IN_WRONG_STATE; 7479 } 7480 7481 // check if connection was just disconnected 7482 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7483 log_info("gap_connect: send create connection (again)"); 7484 conn->state = SEND_CREATE_CONNECTION; 7485 hci_run(); 7486 return ERROR_CODE_SUCCESS; 7487 } 7488 7489 log_info("gap_connect: context exists with state %u", conn->state); 7490 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 7491 hci_run(); 7492 return ERROR_CODE_SUCCESS; 7493 } 7494 7495 // @assumption: only a single outgoing LE Connection exists 7496 static hci_connection_t * gap_get_outgoing_connection(void){ 7497 btstack_linked_item_t *it; 7498 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 7499 hci_connection_t * conn = (hci_connection_t *) it; 7500 if (!hci_is_le_connection(conn)) continue; 7501 switch (conn->state){ 7502 case SEND_CREATE_CONNECTION: 7503 case SENT_CREATE_CONNECTION: 7504 case SENT_CANCEL_CONNECTION: 7505 return conn; 7506 default: 7507 break; 7508 }; 7509 } 7510 return NULL; 7511 } 7512 7513 uint8_t gap_connect_cancel(void){ 7514 hci_connection_t * conn; 7515 switch (hci_stack->le_connecting_request){ 7516 case LE_CONNECTING_IDLE: 7517 break; 7518 case LE_CONNECTING_WHITELIST: 7519 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7520 hci_run(); 7521 break; 7522 case LE_CONNECTING_DIRECT: 7523 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 7524 conn = gap_get_outgoing_connection(); 7525 if (conn == NULL){ 7526 hci_run(); 7527 } else { 7528 switch (conn->state){ 7529 case SEND_CREATE_CONNECTION: 7530 // skip sending create connection and emit event instead 7531 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 7532 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 7533 btstack_memory_hci_connection_free( conn ); 7534 break; 7535 case SENT_CREATE_CONNECTION: 7536 // request to send cancel connection 7537 conn->state = SEND_CANCEL_CONNECTION; 7538 hci_run(); 7539 break; 7540 default: 7541 break; 7542 } 7543 } 7544 break; 7545 default: 7546 btstack_unreachable(); 7547 break; 7548 } 7549 return ERROR_CODE_SUCCESS; 7550 } 7551 7552 /** 7553 * @brief Set connection parameters for outgoing connections 7554 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 7555 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 7556 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 7557 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 7558 * @param conn_latency, default: 4 7559 * @param supervision_timeout (unit: 10ms), default: 720 ms 7560 * @param min_ce_length (unit: 0.625ms), default: 10 ms 7561 * @param max_ce_length (unit: 0.625ms), default: 30 ms 7562 */ 7563 7564 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 7565 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 7566 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 7567 hci_stack->le_connection_scan_interval = conn_scan_interval; 7568 hci_stack->le_connection_scan_window = conn_scan_window; 7569 hci_stack->le_connection_interval_min = conn_interval_min; 7570 hci_stack->le_connection_interval_max = conn_interval_max; 7571 hci_stack->le_connection_latency = conn_latency; 7572 hci_stack->le_supervision_timeout = supervision_timeout; 7573 hci_stack->le_minimum_ce_length = min_ce_length; 7574 hci_stack->le_maximum_ce_length = max_ce_length; 7575 } 7576 #endif 7577 7578 /** 7579 * @brief Updates the connection parameters for a given LE connection 7580 * @param handle 7581 * @param conn_interval_min (unit: 1.25ms) 7582 * @param conn_interval_max (unit: 1.25ms) 7583 * @param conn_latency 7584 * @param supervision_timeout (unit: 10ms) 7585 * @return 0 if ok 7586 */ 7587 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7588 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7589 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7590 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7591 connection->le_conn_interval_min = conn_interval_min; 7592 connection->le_conn_interval_max = conn_interval_max; 7593 connection->le_conn_latency = conn_latency; 7594 connection->le_supervision_timeout = supervision_timeout; 7595 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 7596 hci_run(); 7597 return 0; 7598 } 7599 7600 /** 7601 * @brief Request an update of the connection parameter for a given LE connection 7602 * @param handle 7603 * @param conn_interval_min (unit: 1.25ms) 7604 * @param conn_interval_max (unit: 1.25ms) 7605 * @param conn_latency 7606 * @param supervision_timeout (unit: 10ms) 7607 * @return 0 if ok 7608 */ 7609 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 7610 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 7611 hci_connection_t * connection = hci_connection_for_handle(con_handle); 7612 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7613 connection->le_conn_interval_min = conn_interval_min; 7614 connection->le_conn_interval_max = conn_interval_max; 7615 connection->le_conn_latency = conn_latency; 7616 connection->le_supervision_timeout = supervision_timeout; 7617 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 7618 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 7619 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 7620 return 0; 7621 } 7622 7623 #ifdef ENABLE_LE_PERIPHERAL 7624 7625 /** 7626 * @brief Set Advertisement Data 7627 * @param advertising_data_length 7628 * @param advertising_data (max 31 octets) 7629 * @note data is not copied, pointer has to stay valid 7630 */ 7631 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 7632 hci_stack->le_advertisements_data_len = advertising_data_length; 7633 hci_stack->le_advertisements_data = advertising_data; 7634 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7635 hci_run(); 7636 } 7637 7638 /** 7639 * @brief Set Scan Response Data 7640 * @param advertising_data_length 7641 * @param advertising_data (max 31 octets) 7642 * @note data is not copied, pointer has to stay valid 7643 */ 7644 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 7645 hci_stack->le_scan_response_data_len = scan_response_data_length; 7646 hci_stack->le_scan_response_data = scan_response_data; 7647 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7648 hci_run(); 7649 } 7650 7651 /** 7652 * @brief Set Advertisement Parameters 7653 * @param adv_int_min 7654 * @param adv_int_max 7655 * @param adv_type 7656 * @param direct_address_type 7657 * @param direct_address 7658 * @param channel_map 7659 * @param filter_policy 7660 * 7661 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 7662 */ 7663 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 7664 uint8_t direct_address_typ, bd_addr_t direct_address, 7665 uint8_t channel_map, uint8_t filter_policy) { 7666 7667 hci_stack->le_advertisements_interval_min = adv_int_min; 7668 hci_stack->le_advertisements_interval_max = adv_int_max; 7669 hci_stack->le_advertisements_type = adv_type; 7670 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 7671 hci_stack->le_advertisements_channel_map = channel_map; 7672 hci_stack->le_advertisements_filter_policy = filter_policy; 7673 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 7674 6); 7675 7676 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7677 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_PARAMS_SET; 7678 hci_run(); 7679 } 7680 7681 /** 7682 * @brief Enable/Disable Advertisements 7683 * @param enabled 7684 */ 7685 void gap_advertisements_enable(int enabled){ 7686 if (enabled == 0){ 7687 hci_stack->le_advertisements_state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7688 } else { 7689 hci_stack->le_advertisements_state |= LE_ADVERTISEMENT_STATE_ENABLED; 7690 } 7691 hci_update_advertisements_enabled_for_current_roles(); 7692 hci_run(); 7693 } 7694 7695 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 7696 static le_advertising_set_t * hci_advertising_set_for_handle(uint8_t advertising_handle){ 7697 btstack_linked_list_iterator_t it; 7698 btstack_linked_list_iterator_init(&it, &hci_stack->le_advertising_sets); 7699 while (btstack_linked_list_iterator_has_next(&it)){ 7700 le_advertising_set_t * item = (le_advertising_set_t *) btstack_linked_list_iterator_next(&it); 7701 if ( item->advertising_handle == advertising_handle ) { 7702 return item; 7703 } 7704 } 7705 return NULL; 7706 } 7707 7708 uint8_t gap_extended_advertising_setup(le_advertising_set_t * storage, const le_extended_advertising_parameters_t * advertising_parameters, uint8_t * out_advertising_handle){ 7709 // find free advertisement handle 7710 uint8_t advertisement_handle; 7711 for (advertisement_handle = 1; advertisement_handle <= LE_EXTENDED_ADVERTISING_MAX_HANDLE; advertisement_handle++){ 7712 if (hci_advertising_set_for_handle(advertisement_handle) == NULL) break; 7713 } 7714 if (advertisement_handle > LE_EXTENDED_ADVERTISING_MAX_HANDLE) return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 7715 // clear 7716 memset(storage, 0, sizeof(le_advertising_set_t)); 7717 // copy params 7718 storage->advertising_handle = advertisement_handle; 7719 memcpy(&storage->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7720 // add to list 7721 bool add_ok = btstack_linked_list_add(&hci_stack->le_advertising_sets, (btstack_linked_item_t *) storage); 7722 if (!add_ok) return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 7723 *out_advertising_handle = advertisement_handle; 7724 // set tasks and start 7725 storage->tasks = LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7726 hci_run(); 7727 return ERROR_CODE_SUCCESS; 7728 } 7729 7730 uint8_t gap_extended_advertising_set_params(uint8_t advertising_handle, const le_extended_advertising_parameters_t * advertising_parameters){ 7731 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7732 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7733 memcpy(&advertising_set->extended_params, advertising_parameters, sizeof(le_extended_advertising_parameters_t)); 7734 // set tasks and start 7735 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7736 hci_run(); 7737 return ERROR_CODE_SUCCESS; 7738 } 7739 7740 uint8_t gap_extended_advertising_get_params(uint8_t advertising_handle, le_extended_advertising_parameters_t * advertising_parameters){ 7741 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7742 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7743 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_extended_advertising_parameters_t)); 7744 return ERROR_CODE_SUCCESS; 7745 } 7746 7747 uint8_t gap_extended_advertising_set_random_address(uint8_t advertising_handle, bd_addr_t random_address){ 7748 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7749 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7750 memcpy(advertising_set->random_address, random_address, 6); 7751 // set tasks and start 7752 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7753 hci_run(); 7754 return ERROR_CODE_SUCCESS; 7755 } 7756 7757 uint8_t gap_extended_advertising_set_adv_data(uint8_t advertising_handle, uint16_t advertising_data_length, const uint8_t * advertising_data){ 7758 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7759 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7760 advertising_set->adv_data = advertising_data; 7761 advertising_set->adv_data_len = advertising_data_length; 7762 // set tasks and start 7763 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 7764 hci_run(); 7765 return ERROR_CODE_SUCCESS; 7766 } 7767 7768 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){ 7769 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7770 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7771 advertising_set->scan_data = scan_response_data; 7772 advertising_set->scan_data_len = scan_response_data_length; 7773 // set tasks and start 7774 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 7775 hci_run(); 7776 return ERROR_CODE_SUCCESS; 7777 } 7778 7779 uint8_t gap_extended_advertising_start(uint8_t advertising_handle, uint16_t timeout, uint8_t num_extended_advertising_events){ 7780 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7781 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7782 advertising_set->enable_timeout = timeout; 7783 advertising_set->enable_max_scan_events = num_extended_advertising_events; 7784 // set tasks and start 7785 advertising_set->state |= LE_ADVERTISEMENT_STATE_ENABLED; 7786 hci_run(); 7787 return ERROR_CODE_SUCCESS; 7788 } 7789 7790 uint8_t gap_extended_advertising_stop(uint8_t advertising_handle){ 7791 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7792 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7793 // set tasks and start 7794 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_ENABLED; 7795 hci_run(); 7796 return ERROR_CODE_SUCCESS; 7797 } 7798 7799 uint8_t gap_extended_advertising_remove(uint8_t advertising_handle){ 7800 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7801 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7802 // set tasks and start 7803 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_REMOVE_SET; 7804 hci_run(); 7805 return ERROR_CODE_SUCCESS; 7806 } 7807 7808 #ifdef ENABLE_LE_PERIODIC_ADVERTISING 7809 uint8_t gap_periodic_advertising_set_params(uint8_t advertising_handle, const le_periodic_advertising_parameters_t * advertising_parameters){ 7810 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7811 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7812 // periodic advertising requires neither connectable, scannable, legacy or anonymous 7813 if ((advertising_set->extended_params.advertising_event_properties & 0x1f) != 0) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 7814 memcpy(&advertising_set->periodic_params, advertising_parameters, sizeof(le_periodic_advertising_parameters_t)); 7815 // set tasks and start 7816 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_PARAMS; 7817 hci_run(); 7818 return ERROR_CODE_SUCCESS; 7819 } 7820 7821 uint8_t gap_periodic_advertising_get_params(uint8_t advertising_handle, le_periodic_advertising_parameters_t * advertising_parameters){ 7822 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7823 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7824 memcpy(advertising_parameters, &advertising_set->extended_params, sizeof(le_periodic_advertising_parameters_t)); 7825 return ERROR_CODE_SUCCESS; 7826 } 7827 7828 uint8_t gap_periodic_advertising_set_data(uint8_t advertising_handle, uint16_t periodic_data_length, const uint8_t * periodic_data){ 7829 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7830 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7831 advertising_set->periodic_data = periodic_data; 7832 advertising_set->periodic_data_len = periodic_data_length; 7833 // set tasks and start 7834 advertising_set->tasks |= LE_ADVERTISEMENT_TASKS_SET_PERIODIC_DATA; 7835 hci_run(); 7836 return ERROR_CODE_SUCCESS; 7837 } 7838 7839 uint8_t gap_periodic_advertising_start(uint8_t advertising_handle, bool include_adi){ 7840 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7841 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7842 // set tasks and start 7843 advertising_set->periodic_include_adi = include_adi; 7844 advertising_set->state |= LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7845 hci_run(); 7846 return ERROR_CODE_SUCCESS; 7847 } 7848 7849 uint8_t gap_periodic_advertising_stop(uint8_t advertising_handle){ 7850 le_advertising_set_t * advertising_set = hci_advertising_set_for_handle(advertising_handle); 7851 if (advertising_set == NULL) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7852 // set tasks and start 7853 advertising_set->state &= ~LE_ADVERTISEMENT_STATE_PERIODIC_ENABLED; 7854 hci_run(); 7855 return ERROR_CODE_SUCCESS; 7856 } 7857 #endif /* ENABLE_LE_PERIODIC_ADVERTISING */ 7858 7859 #endif 7860 7861 #endif 7862 7863 void hci_le_set_own_address_type(uint8_t own_address_type){ 7864 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 7865 if (own_address_type == hci_stack->le_own_addr_type) return; 7866 hci_stack->le_own_addr_type = own_address_type; 7867 7868 #ifdef ENABLE_LE_PERIPHERAL 7869 // update advertisement parameters, too 7870 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 7871 hci_run(); 7872 #endif 7873 #ifdef ENABLE_LE_CENTRAL 7874 // note: we don't update scan parameters or modify ongoing connection attempts 7875 #endif 7876 } 7877 7878 void hci_le_random_address_set(const bd_addr_t random_address){ 7879 memcpy(hci_stack->le_random_address, random_address, 6); 7880 hci_stack->le_random_address_set = true; 7881 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADDRESS; 7882 hci_run(); 7883 } 7884 7885 #endif 7886 7887 uint8_t gap_disconnect(hci_con_handle_t handle){ 7888 hci_connection_t * conn = hci_connection_for_handle(handle); 7889 if (!conn){ 7890 hci_emit_disconnection_complete(handle, 0); 7891 return 0; 7892 } 7893 // ignore if already disconnected 7894 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 7895 return 0; 7896 } 7897 conn->state = SEND_DISCONNECT; 7898 hci_run(); 7899 return 0; 7900 } 7901 7902 int gap_read_rssi(hci_con_handle_t con_handle){ 7903 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 7904 if (hci_connection == NULL) return 0; 7905 hci_connection->gap_connection_tasks |= GAP_CONNECTION_TASK_READ_RSSI; 7906 hci_run(); 7907 return 1; 7908 } 7909 7910 /** 7911 * @brief Get connection type 7912 * @param con_handle 7913 * @result connection_type 7914 */ 7915 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 7916 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7917 if (!conn) return GAP_CONNECTION_INVALID; 7918 switch (conn->address_type){ 7919 case BD_ADDR_TYPE_LE_PUBLIC: 7920 case BD_ADDR_TYPE_LE_RANDOM: 7921 return GAP_CONNECTION_LE; 7922 case BD_ADDR_TYPE_SCO: 7923 return GAP_CONNECTION_SCO; 7924 case BD_ADDR_TYPE_ACL: 7925 return GAP_CONNECTION_ACL; 7926 default: 7927 return GAP_CONNECTION_INVALID; 7928 } 7929 } 7930 7931 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 7932 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 7933 if (!conn) return HCI_ROLE_INVALID; 7934 return (hci_role_t) conn->role; 7935 } 7936 7937 7938 #ifdef ENABLE_CLASSIC 7939 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 7940 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 7941 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7942 conn->request_role = role; 7943 hci_run(); 7944 return ERROR_CODE_SUCCESS; 7945 } 7946 #endif 7947 7948 #ifdef ENABLE_BLE 7949 7950 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){ 7951 hci_connection_t * conn = hci_connection_for_handle(con_handle); 7952 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 7953 7954 conn->le_phy_update_all_phys = all_phys; 7955 conn->le_phy_update_tx_phys = tx_phys; 7956 conn->le_phy_update_rx_phys = rx_phys; 7957 conn->le_phy_update_phy_options = phy_options; 7958 7959 hci_run(); 7960 7961 return 0; 7962 } 7963 7964 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 7965 // check if already in list 7966 btstack_linked_list_iterator_t it; 7967 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7968 while (btstack_linked_list_iterator_has_next(&it)) { 7969 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 7970 if (entry->address_type != address_type) { 7971 continue; 7972 } 7973 if (memcmp(entry->address, address, 6) != 0) { 7974 continue; 7975 } 7976 // disallow if already scheduled to add 7977 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 7978 return ERROR_CODE_COMMAND_DISALLOWED; 7979 } 7980 // still on controller, but scheduled to remove -> re-add 7981 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 7982 return ERROR_CODE_SUCCESS; 7983 } 7984 // alloc and add to list 7985 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 7986 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 7987 entry->address_type = address_type; 7988 (void)memcpy(entry->address, address, 6); 7989 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 7990 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 7991 return ERROR_CODE_SUCCESS; 7992 } 7993 7994 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 7995 btstack_linked_list_iterator_t it; 7996 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 7997 while (btstack_linked_list_iterator_has_next(&it)){ 7998 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 7999 if (entry->address_type != address_type) { 8000 continue; 8001 } 8002 if (memcmp(entry->address, address, 6) != 0) { 8003 continue; 8004 } 8005 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8006 // remove from controller if already present 8007 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8008 } else { 8009 // directly remove entry from whitelist 8010 btstack_linked_list_iterator_remove(&it); 8011 btstack_memory_whitelist_entry_free(entry); 8012 } 8013 return ERROR_CODE_SUCCESS; 8014 } 8015 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8016 } 8017 8018 static void hci_whitelist_clear(void){ 8019 btstack_linked_list_iterator_t it; 8020 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 8021 while (btstack_linked_list_iterator_has_next(&it)){ 8022 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 8023 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 8024 // remove from controller if already present 8025 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 8026 continue; 8027 } 8028 // directly remove entry from whitelist 8029 btstack_linked_list_iterator_remove(&it); 8030 btstack_memory_whitelist_entry_free(entry); 8031 } 8032 } 8033 8034 // free all entries unconditionally 8035 static void hci_whitelist_free(void){ 8036 btstack_linked_list_iterator_t lit; 8037 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 8038 while (btstack_linked_list_iterator_has_next(&lit)){ 8039 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 8040 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 8041 btstack_memory_whitelist_entry_free(entry); 8042 } 8043 } 8044 8045 /** 8046 * @brief Clear Whitelist 8047 * @return 0 if ok 8048 */ 8049 uint8_t gap_whitelist_clear(void){ 8050 hci_whitelist_clear(); 8051 hci_run(); 8052 return ERROR_CODE_SUCCESS; 8053 } 8054 8055 /** 8056 * @brief Add Device to Whitelist 8057 * @param address_typ 8058 * @param address 8059 * @return 0 if ok 8060 */ 8061 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 8062 uint8_t status = hci_whitelist_add(address_type, address); 8063 if (status){ 8064 return status; 8065 } 8066 hci_run(); 8067 return ERROR_CODE_SUCCESS; 8068 } 8069 8070 /** 8071 * @brief Remove Device from Whitelist 8072 * @param address_typ 8073 * @param address 8074 * @return 0 if ok 8075 */ 8076 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 8077 uint8_t status = hci_whitelist_remove(address_type, address); 8078 if (status){ 8079 return status; 8080 } 8081 hci_run(); 8082 return ERROR_CODE_SUCCESS; 8083 } 8084 8085 #ifdef ENABLE_LE_CENTRAL 8086 /** 8087 * @brief Connect with Whitelist 8088 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 8089 * @return - if ok 8090 */ 8091 uint8_t gap_connect_with_whitelist(void){ 8092 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 8093 return ERROR_CODE_COMMAND_DISALLOWED; 8094 } 8095 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8096 hci_run(); 8097 return ERROR_CODE_SUCCESS; 8098 } 8099 8100 /** 8101 * @brief Auto Connection Establishment - Start Connecting to device 8102 * @param address_typ 8103 * @param address 8104 * @return 0 if ok 8105 */ 8106 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 8107 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8108 return ERROR_CODE_COMMAND_DISALLOWED; 8109 } 8110 8111 uint8_t status = hci_whitelist_add(address_type, address); 8112 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 8113 return status; 8114 } 8115 8116 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 8117 8118 hci_run(); 8119 return ERROR_CODE_SUCCESS; 8120 } 8121 8122 /** 8123 * @brief Auto Connection Establishment - Stop Connecting to device 8124 * @param address_typ 8125 * @param address 8126 * @return 0 if ok 8127 */ 8128 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 8129 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 8130 return ERROR_CODE_COMMAND_DISALLOWED; 8131 } 8132 8133 hci_whitelist_remove(address_type, address); 8134 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 8135 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8136 } 8137 hci_run(); 8138 return 0; 8139 } 8140 8141 /** 8142 * @brief Auto Connection Establishment - Stop everything 8143 * @note Convenience function to stop all active auto connection attempts 8144 */ 8145 uint8_t gap_auto_connection_stop_all(void){ 8146 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 8147 return ERROR_CODE_COMMAND_DISALLOWED; 8148 } 8149 hci_whitelist_clear(); 8150 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 8151 hci_run(); 8152 return ERROR_CODE_SUCCESS; 8153 } 8154 8155 uint16_t gap_le_connection_interval(hci_con_handle_t con_handle){ 8156 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8157 if (!conn) return 0; 8158 return conn->le_connection_interval; 8159 } 8160 #endif 8161 #endif 8162 8163 #ifdef ENABLE_CLASSIC 8164 /** 8165 * @brief Set Extended Inquiry Response data 8166 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 8167 * @note has to be done before stack starts up 8168 */ 8169 void gap_set_extended_inquiry_response(const uint8_t * data){ 8170 hci_stack->eir_data = data; 8171 hci_stack->gap_tasks_classic |= GAP_TASK_SET_EIR_DATA; 8172 hci_run(); 8173 } 8174 8175 /** 8176 * @brief Start GAP Classic Inquiry 8177 * @param duration in 1.28s units 8178 * @return 0 if ok 8179 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 8180 */ 8181 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 8182 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8183 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8184 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 8185 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8186 } 8187 hci_stack->inquiry_state = duration_in_1280ms_units; 8188 hci_stack->inquiry_max_period_length = 0; 8189 hci_stack->inquiry_min_period_length = 0; 8190 hci_run(); 8191 return 0; 8192 } 8193 8194 uint8_t gap_inquiry_periodic_start(uint8_t duration, uint16_t max_period_length, uint16_t min_period_length){ 8195 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 8196 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8197 if (duration < GAP_INQUIRY_DURATION_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8198 if (duration > GAP_INQUIRY_DURATION_MAX) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 8199 if (max_period_length < GAP_INQUIRY_MAX_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8200 if (min_period_length < GAP_INQUIRY_MIN_PERIODIC_LEN_MIN) return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS;; 8201 8202 hci_stack->inquiry_state = duration; 8203 hci_stack->inquiry_max_period_length = max_period_length; 8204 hci_stack->inquiry_min_period_length = min_period_length; 8205 hci_run(); 8206 return 0; 8207 } 8208 8209 /** 8210 * @brief Stop GAP Classic Inquiry 8211 * @return 0 if ok 8212 */ 8213 int gap_inquiry_stop(void){ 8214 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 8215 // emit inquiry complete event, before it even started 8216 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 8217 hci_emit_event(event, sizeof(event), 1); 8218 return 0; 8219 } 8220 switch (hci_stack->inquiry_state){ 8221 case GAP_INQUIRY_STATE_ACTIVE: 8222 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 8223 hci_run(); 8224 return ERROR_CODE_SUCCESS; 8225 case GAP_INQUIRY_STATE_PERIODIC: 8226 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_EXIT_PERIODIC; 8227 hci_run(); 8228 return ERROR_CODE_SUCCESS; 8229 default: 8230 return ERROR_CODE_COMMAND_DISALLOWED; 8231 } 8232 } 8233 8234 void gap_inquiry_set_lap(uint32_t lap){ 8235 hci_stack->inquiry_lap = lap; 8236 } 8237 8238 void gap_inquiry_set_scan_activity(uint16_t inquiry_scan_interval, uint16_t inquiry_scan_window){ 8239 hci_stack->inquiry_scan_interval = inquiry_scan_interval; 8240 hci_stack->inquiry_scan_window = inquiry_scan_window; 8241 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_INQUIRY_SCAN_ACTIVITY; 8242 hci_run(); 8243 } 8244 8245 8246 /** 8247 * @brief Remote Name Request 8248 * @param addr 8249 * @param page_scan_repetition_mode 8250 * @param clock_offset only used when bit 15 is set 8251 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 8252 */ 8253 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 8254 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8255 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 8256 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 8257 hci_stack->remote_name_clock_offset = clock_offset; 8258 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 8259 hci_run(); 8260 return 0; 8261 } 8262 8263 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 8264 hci_stack->gap_pairing_state = state; 8265 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 8266 hci_run(); 8267 return 0; 8268 } 8269 8270 /** 8271 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 8272 * @param addr 8273 * @param pin_data 8274 * @param pin_len 8275 * @return 0 if ok 8276 */ 8277 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 8278 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8279 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 8280 hci_stack->gap_pairing_pin_len = pin_len; 8281 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 8282 } 8283 8284 /** 8285 * @brief Legacy Pairing Pin Code Response 8286 * @param addr 8287 * @param pin 8288 * @return 0 if ok 8289 */ 8290 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 8291 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, (uint8_t) strlen(pin)); 8292 } 8293 8294 /** 8295 * @brief Abort Legacy Pairing 8296 * @param addr 8297 * @param pin 8298 * @return 0 if ok 8299 */ 8300 int gap_pin_code_negative(bd_addr_t addr){ 8301 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8302 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 8303 } 8304 8305 /** 8306 * @brief SSP Passkey Response 8307 * @param addr 8308 * @param passkey 8309 * @return 0 if ok 8310 */ 8311 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 8312 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8313 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 8314 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 8315 } 8316 8317 /** 8318 * @brief Abort SSP Passkey Entry/Pairing 8319 * @param addr 8320 * @param pin 8321 * @return 0 if ok 8322 */ 8323 int gap_ssp_passkey_negative(const bd_addr_t addr){ 8324 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8325 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 8326 } 8327 8328 /** 8329 * @brief Accept SSP Numeric Comparison 8330 * @param addr 8331 * @param passkey 8332 * @return 0 if ok 8333 */ 8334 int gap_ssp_confirmation_response(const bd_addr_t addr){ 8335 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8336 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 8337 } 8338 8339 /** 8340 * @brief Abort SSP Numeric Comparison/Pairing 8341 * @param addr 8342 * @param pin 8343 * @return 0 if ok 8344 */ 8345 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 8346 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 8347 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 8348 } 8349 8350 #if defined(ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY) || defined(ENABLE_EXPLICIT_LINK_KEY_REPLY) 8351 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 8352 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8353 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8354 connectionSetAuthenticationFlags(conn, flag); 8355 hci_run(); 8356 return ERROR_CODE_SUCCESS; 8357 } 8358 #endif 8359 8360 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 8361 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 8362 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_REPLY); 8363 } 8364 8365 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 8366 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 8367 } 8368 #endif 8369 8370 #ifdef ENABLE_CLASSIC_PAIRING_OOB 8371 /** 8372 * @brief Report Remote OOB Data 8373 * @param bd_addr 8374 * @param c_192 Simple Pairing Hash C derived from P-192 public key 8375 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 8376 * @param c_256 Simple Pairing Hash C derived from P-256 public key 8377 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 8378 */ 8379 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){ 8380 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8381 if (connection == NULL) { 8382 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8383 } 8384 connection->classic_oob_c_192 = c_192; 8385 connection->classic_oob_r_192 = r_192; 8386 8387 // ignore P-256 if not supported by us 8388 if (hci_stack->secure_connections_active){ 8389 connection->classic_oob_c_256 = c_256; 8390 connection->classic_oob_r_256 = r_256; 8391 } 8392 8393 return ERROR_CODE_SUCCESS; 8394 } 8395 /** 8396 * @brief Generate new OOB data 8397 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 8398 */ 8399 void gap_ssp_generate_oob_data(void){ 8400 hci_stack->classic_read_local_oob_data = true; 8401 hci_run(); 8402 } 8403 8404 #endif 8405 8406 #ifdef ENABLE_EXPLICIT_LINK_KEY_REPLY 8407 uint8_t gap_send_link_key_response(const bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 8408 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 8409 if (connection == NULL) { 8410 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8411 } 8412 8413 memcpy(connection->link_key, link_key, sizeof(link_key_t)); 8414 connection->link_key_type = type; 8415 8416 return gap_set_auth_flag_and_run(addr, AUTH_FLAG_HANDLE_LINK_KEY_REQUEST); 8417 } 8418 8419 #endif // ENABLE_EXPLICIT_LINK_KEY_REPLY 8420 /** 8421 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 8422 * @param inquiry_mode see bluetooth_defines.h 8423 */ 8424 void hci_set_inquiry_mode(inquiry_mode_t inquiry_mode){ 8425 hci_stack->inquiry_mode = inquiry_mode; 8426 } 8427 8428 /** 8429 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 8430 */ 8431 void hci_set_sco_voice_setting(uint16_t voice_setting){ 8432 hci_stack->sco_voice_setting = voice_setting; 8433 } 8434 8435 /** 8436 * @brief Get SCO Voice Setting 8437 * @return current voice setting 8438 */ 8439 uint16_t hci_get_sco_voice_setting(void){ 8440 return hci_stack->sco_voice_setting; 8441 } 8442 8443 static int hci_have_usb_transport(void){ 8444 if (!hci_stack->hci_transport) return 0; 8445 const char * transport_name = hci_stack->hci_transport->name; 8446 if (!transport_name) return 0; 8447 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 8448 } 8449 8450 /** @brief Get SCO packet length for current SCO Voice setting 8451 * @note Using SCO packets of the exact length is required for USB transfer 8452 * @return Length of SCO packets in bytes (not audio frames) 8453 */ 8454 uint16_t hci_get_sco_packet_length(void){ 8455 uint16_t sco_packet_length = 0; 8456 8457 #ifdef ENABLE_SCO_OVER_HCI 8458 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8459 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8460 8461 if (hci_have_usb_transport()){ 8462 // see Core Spec for H2 USB Transfer. 8463 // 3 byte SCO header + 24 bytes per connection 8464 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 8465 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 8466 } else { 8467 // 3 byte SCO header + SCO packet size over the air (60 bytes) 8468 sco_packet_length = 3 + 60 * multiplier; 8469 // assert that it still fits inside an SCO buffer 8470 if (sco_packet_length > (hci_stack->sco_data_packet_length + 3)){ 8471 sco_packet_length = 3 + 60; 8472 } 8473 } 8474 #endif 8475 8476 #ifdef HAVE_SCO_TRANSPORT 8477 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 8478 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 8479 sco_packet_length = 3 + 60 * multiplier; 8480 #endif 8481 return sco_packet_length; 8482 } 8483 8484 /** 8485 * @brief Sets the master/slave policy 8486 * @param policy (0: attempt to become master, 1: let connecting device decide) 8487 */ 8488 void hci_set_master_slave_policy(uint8_t policy){ 8489 hci_stack->master_slave_policy = policy; 8490 } 8491 8492 #endif 8493 8494 HCI_STATE hci_get_state(void){ 8495 return hci_stack->state; 8496 } 8497 8498 #ifdef ENABLE_CLASSIC 8499 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 8500 hci_stack->gap_classic_accept_callback = accept_callback; 8501 } 8502 #endif 8503 8504 /** 8505 * @brief Set callback for Bluetooth Hardware Error 8506 */ 8507 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 8508 hci_stack->hardware_error_callback = fn; 8509 } 8510 8511 void hci_disconnect_all(void){ 8512 btstack_linked_list_iterator_t it; 8513 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 8514 while (btstack_linked_list_iterator_has_next(&it)){ 8515 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 8516 if (con->state == SENT_DISCONNECT) continue; 8517 con->state = SEND_DISCONNECT; 8518 } 8519 hci_run(); 8520 } 8521 8522 uint16_t hci_get_manufacturer(void){ 8523 return hci_stack->manufacturer; 8524 } 8525 8526 #ifdef ENABLE_BLE 8527 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 8528 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 8529 if (!hci_con) return NULL; 8530 return &hci_con->sm_connection; 8531 } 8532 8533 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 8534 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 8535 #endif 8536 8537 uint8_t gap_encryption_key_size(hci_con_handle_t con_handle){ 8538 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8539 if (hci_connection == NULL) return 0; 8540 if (hci_is_le_connection(hci_connection)){ 8541 #ifdef ENABLE_BLE 8542 sm_connection_t * sm_conn = &hci_connection->sm_connection; 8543 if (sm_conn->sm_connection_encrypted) { 8544 return sm_conn->sm_actual_encryption_key_size; 8545 } 8546 #endif 8547 } else { 8548 #ifdef ENABLE_CLASSIC 8549 if ((hci_connection->authentication_flags & AUTH_FLAG_CONNECTION_ENCRYPTED)){ 8550 return hci_connection->encryption_key_size; 8551 } 8552 #endif 8553 } 8554 return 0; 8555 } 8556 8557 bool gap_authenticated(hci_con_handle_t con_handle){ 8558 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8559 if (hci_connection == NULL) return false; 8560 8561 switch (hci_connection->address_type){ 8562 #ifdef ENABLE_BLE 8563 case BD_ADDR_TYPE_LE_PUBLIC: 8564 case BD_ADDR_TYPE_LE_RANDOM: 8565 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 8566 return hci_connection->sm_connection.sm_connection_authenticated != 0; 8567 #endif 8568 #ifdef ENABLE_CLASSIC 8569 case BD_ADDR_TYPE_SCO: 8570 case BD_ADDR_TYPE_ACL: 8571 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 8572 #endif 8573 default: 8574 return false; 8575 } 8576 } 8577 8578 bool gap_secure_connection(hci_con_handle_t con_handle){ 8579 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8580 if (hci_connection == NULL) return 0; 8581 8582 switch (hci_connection->address_type){ 8583 #ifdef ENABLE_BLE 8584 case BD_ADDR_TYPE_LE_PUBLIC: 8585 case BD_ADDR_TYPE_LE_RANDOM: 8586 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return false; // unencrypted connection cannot be authenticated 8587 return hci_connection->sm_connection.sm_connection_sc != 0; 8588 #endif 8589 #ifdef ENABLE_CLASSIC 8590 case BD_ADDR_TYPE_SCO: 8591 case BD_ADDR_TYPE_ACL: 8592 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 8593 #endif 8594 default: 8595 return false; 8596 } 8597 } 8598 8599 bool gap_bonded(hci_con_handle_t con_handle){ 8600 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 8601 if (hci_connection == NULL) return 0; 8602 8603 #ifdef ENABLE_CLASSIC 8604 link_key_t link_key; 8605 link_key_type_t link_key_type; 8606 #endif 8607 switch (hci_connection->address_type){ 8608 #ifdef ENABLE_BLE 8609 case BD_ADDR_TYPE_LE_PUBLIC: 8610 case BD_ADDR_TYPE_LE_RANDOM: 8611 return hci_connection->sm_connection.sm_le_db_index >= 0; 8612 #endif 8613 #ifdef ENABLE_CLASSIC 8614 case BD_ADDR_TYPE_SCO: 8615 case BD_ADDR_TYPE_ACL: 8616 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 8617 #endif 8618 default: 8619 return false; 8620 } 8621 } 8622 8623 #ifdef ENABLE_BLE 8624 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 8625 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 8626 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 8627 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 8628 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 8629 return sm_conn->sm_connection_authorization_state; 8630 } 8631 #endif 8632 8633 #ifdef ENABLE_CLASSIC 8634 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){ 8635 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8636 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8637 conn->sniff_min_interval = sniff_min_interval; 8638 conn->sniff_max_interval = sniff_max_interval; 8639 conn->sniff_attempt = sniff_attempt; 8640 conn->sniff_timeout = sniff_timeout; 8641 hci_run(); 8642 return 0; 8643 } 8644 8645 /** 8646 * @brief Exit Sniff mode 8647 * @param con_handle 8648 @ @return 0 if ok 8649 */ 8650 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 8651 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8652 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8653 conn->sniff_min_interval = 0xffff; 8654 hci_run(); 8655 return 0; 8656 } 8657 8658 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){ 8659 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8660 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8661 conn->sniff_subrating_max_latency = max_latency; 8662 conn->sniff_subrating_min_remote_timeout = min_remote_timeout; 8663 conn->sniff_subrating_min_local_timeout = min_local_timeout; 8664 hci_run(); 8665 return ERROR_CODE_SUCCESS; 8666 } 8667 8668 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){ 8669 hci_connection_t * conn = hci_connection_for_handle(con_handle); 8670 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8671 conn->qos_service_type = service_type; 8672 conn->qos_token_rate = token_rate; 8673 conn->qos_peak_bandwidth = peak_bandwidth; 8674 conn->qos_latency = latency; 8675 conn->qos_delay_variation = delay_variation; 8676 hci_run(); 8677 return ERROR_CODE_SUCCESS; 8678 } 8679 8680 void gap_set_page_scan_activity(uint16_t page_scan_interval, uint16_t page_scan_window){ 8681 hci_stack->new_page_scan_interval = page_scan_interval; 8682 hci_stack->new_page_scan_window = page_scan_window; 8683 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_ACTIVITY; 8684 hci_run(); 8685 } 8686 8687 void gap_set_page_scan_type(page_scan_type_t page_scan_type){ 8688 hci_stack->new_page_scan_type = (uint8_t) page_scan_type; 8689 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_SCAN_TYPE; 8690 hci_run(); 8691 } 8692 8693 void gap_set_page_timeout(uint16_t page_timeout){ 8694 hci_stack->page_timeout = page_timeout; 8695 hci_stack->gap_tasks_classic |= GAP_TASK_WRITE_PAGE_TIMEOUT; 8696 hci_run(); 8697 } 8698 8699 #endif 8700 8701 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 8702 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 8703 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8704 if (le_device_db_index >= le_device_db_max_count()) return; 8705 uint8_t offset = le_device_db_index >> 3; 8706 uint8_t mask = 1 << (le_device_db_index & 7); 8707 hci_stack->le_resolving_list_add_entries[offset] |= mask; 8708 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8709 // note: go back to remove entries, otherwise, a remove + add will skip the add 8710 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8711 } 8712 } 8713 8714 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 8715 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 8716 if (le_device_db_index >= le_device_db_max_count()) return; 8717 uint8_t offset = le_device_db_index >> 3; 8718 uint8_t mask = 1 << (le_device_db_index & 7); 8719 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 8720 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 8721 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 8722 } 8723 } 8724 8725 uint8_t gap_load_resolving_list_from_le_device_db(void){ 8726 if (hci_command_supported(SUPPORTED_HCI_COMMAND_LE_SET_ADDRESS_RESOLUTION_ENABLE) == false){ 8727 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 8728 } 8729 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 8730 // restart le resolving list update 8731 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 8732 } 8733 return ERROR_CODE_SUCCESS; 8734 } 8735 #endif 8736 8737 #ifdef ENABLE_BLE 8738 #ifdef ENABLE_LE_CENTRAL 8739 #ifdef ENABLE_LE_EXTENDED_ADVERTISING 8740 8741 static uint8_t hci_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8742 // check if already in list 8743 btstack_linked_list_iterator_t it; 8744 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8745 while (btstack_linked_list_iterator_has_next(&it)) { 8746 periodic_advertiser_list_entry_t *entry = (periodic_advertiser_list_entry_t *) btstack_linked_list_iterator_next(&it); 8747 if (entry->sid != advertising_sid) { 8748 continue; 8749 } 8750 if (entry->address_type != address_type) { 8751 continue; 8752 } 8753 if (memcmp(entry->address, address, 6) != 0) { 8754 continue; 8755 } 8756 // disallow if already scheduled to add 8757 if ((entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER) != 0){ 8758 return ERROR_CODE_COMMAND_DISALLOWED; 8759 } 8760 // still on controller, but scheduled to remove -> re-add 8761 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8762 return ERROR_CODE_SUCCESS; 8763 } 8764 // alloc and add to list 8765 periodic_advertiser_list_entry_t * entry = btstack_memory_periodic_advertiser_list_entry_get(); 8766 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 8767 entry->sid = advertising_sid; 8768 entry->address_type = address_type; 8769 (void)memcpy(entry->address, address, 6); 8770 entry->state = LE_PERIODIC_ADVERTISER_LIST_ENTRY_ADD_TO_CONTROLLER; 8771 btstack_linked_list_add(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t*) entry); 8772 return ERROR_CODE_SUCCESS; 8773 } 8774 8775 static uint8_t hci_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8776 btstack_linked_list_iterator_t it; 8777 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8778 while (btstack_linked_list_iterator_has_next(&it)){ 8779 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8780 if (entry->sid != advertising_sid) { 8781 continue; 8782 } 8783 if (entry->address_type != address_type) { 8784 continue; 8785 } 8786 if (memcmp(entry->address, address, 6) != 0) { 8787 continue; 8788 } 8789 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8790 // remove from controller if already present 8791 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8792 } else { 8793 // directly remove entry from whitelist 8794 btstack_linked_list_iterator_remove(&it); 8795 btstack_memory_periodic_advertiser_list_entry_free(entry); 8796 } 8797 return ERROR_CODE_SUCCESS; 8798 } 8799 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 8800 } 8801 8802 static void hci_periodic_advertiser_list_clear(void){ 8803 btstack_linked_list_iterator_t it; 8804 btstack_linked_list_iterator_init(&it, &hci_stack->le_periodic_advertiser_list); 8805 while (btstack_linked_list_iterator_has_next(&it)){ 8806 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&it); 8807 if (entry->state & LE_PERIODIC_ADVERTISER_LIST_ENTRY_ON_CONTROLLER){ 8808 // remove from controller if already present 8809 entry->state |= LE_PERIODIC_ADVERTISER_LIST_ENTRY_REMOVE_FROM_CONTROLLER; 8810 continue; 8811 } 8812 // directly remove entry from whitelist 8813 btstack_linked_list_iterator_remove(&it); 8814 btstack_memory_periodic_advertiser_list_entry_free(entry); 8815 } 8816 } 8817 8818 // free all entries unconditionally 8819 static void hci_periodic_advertiser_list_free(void){ 8820 btstack_linked_list_iterator_t lit; 8821 btstack_linked_list_iterator_init(&lit, &hci_stack->le_periodic_advertiser_list); 8822 while (btstack_linked_list_iterator_has_next(&lit)){ 8823 periodic_advertiser_list_entry_t * entry = (periodic_advertiser_list_entry_t*) btstack_linked_list_iterator_next(&lit); 8824 btstack_linked_list_remove(&hci_stack->le_periodic_advertiser_list, (btstack_linked_item_t *) entry); 8825 btstack_memory_periodic_advertiser_list_entry_free(entry); 8826 } 8827 } 8828 8829 uint8_t gap_periodic_advertiser_list_clear(void){ 8830 hci_periodic_advertiser_list_clear(); 8831 hci_run(); 8832 return ERROR_CODE_SUCCESS; 8833 } 8834 8835 uint8_t gap_periodic_advertiser_list_add(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8836 uint8_t status = hci_periodic_advertiser_list_add(address_type, address, advertising_sid); 8837 if (status){ 8838 return status; 8839 } 8840 hci_run(); 8841 return ERROR_CODE_SUCCESS; 8842 } 8843 8844 uint8_t gap_periodic_advertiser_list_remove(bd_addr_type_t address_type, const bd_addr_t address, uint8_t advertising_sid){ 8845 uint8_t status = hci_periodic_advertiser_list_remove(address_type, address, advertising_sid); 8846 if (status){ 8847 return status; 8848 } 8849 hci_run(); 8850 return ERROR_CODE_SUCCESS; 8851 } 8852 8853 uint8_t gap_periodic_advertising_create_sync(uint8_t options, uint8_t advertising_sid, bd_addr_type_t advertiser_address_type, 8854 bd_addr_t advertiser_address, uint16_t skip, uint16_t sync_timeout, uint8_t sync_cte_type){ 8855 // abort if already active 8856 if (hci_stack->le_periodic_sync_request != LE_CONNECTING_IDLE) { 8857 return ERROR_CODE_COMMAND_DISALLOWED; 8858 } 8859 // store request 8860 hci_stack->le_periodic_sync_request = ((options & 0) != 0) ? LE_CONNECTING_WHITELIST : LE_CONNECTING_DIRECT; 8861 hci_stack->le_periodic_sync_options = options; 8862 hci_stack->le_periodic_sync_advertising_sid = advertising_sid; 8863 hci_stack->le_periodic_sync_advertiser_address_type = advertiser_address_type; 8864 memcpy(hci_stack->le_periodic_sync_advertiser_address, advertiser_address, 6); 8865 hci_stack->le_periodic_sync_skip = skip; 8866 hci_stack->le_periodic_sync_timeout = sync_timeout; 8867 hci_stack->le_periodic_sync_cte_type = sync_cte_type; 8868 8869 hci_run(); 8870 return ERROR_CODE_SUCCESS; 8871 } 8872 8873 uint8_t gap_periodic_advertising_create_sync_cancel(void){ 8874 // abort if not requested 8875 if (hci_stack->le_periodic_sync_request == LE_CONNECTING_IDLE) { 8876 return ERROR_CODE_COMMAND_DISALLOWED; 8877 } 8878 hci_stack->le_periodic_sync_request = LE_CONNECTING_IDLE; 8879 hci_run(); 8880 return ERROR_CODE_SUCCESS; 8881 } 8882 8883 uint8_t gap_periodic_advertising_terminate_sync(uint16_t sync_handle){ 8884 if (hci_stack->le_periodic_terminate_sync_handle != HCI_CON_HANDLE_INVALID){ 8885 return ERROR_CODE_COMMAND_DISALLOWED; 8886 } 8887 hci_stack->le_periodic_terminate_sync_handle = sync_handle; 8888 hci_run(); 8889 return ERROR_CODE_SUCCESS; 8890 } 8891 8892 #endif 8893 #endif 8894 #ifdef ENABLE_LE_ISOCHRONOUS_STREAMS 8895 static uint8_t hci_iso_stream_create(hci_con_handle_t con_handle, uint8_t big_handle) { 8896 hci_iso_stream_t * iso_stream = btstack_memory_hci_iso_stream_get(); 8897 if (iso_stream == NULL){ 8898 return ERROR_CODE_MEMORY_CAPACITY_EXCEEDED; 8899 } else { 8900 iso_stream->state = HCI_ISO_STREAM_STATE_REQUESTED; 8901 iso_stream->con_handle = con_handle; 8902 iso_stream->big_handle = big_handle; 8903 btstack_linked_list_add(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8904 return ERROR_CODE_SUCCESS; 8905 } 8906 } 8907 8908 static hci_iso_stream_t * hci_iso_stream_for_con_handle(hci_con_handle_t con_handle){ 8909 btstack_linked_list_iterator_t it; 8910 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8911 while (btstack_linked_list_iterator_has_next(&it)){ 8912 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8913 if (iso_stream->con_handle == con_handle ) { 8914 return iso_stream; 8915 } 8916 } 8917 return NULL; 8918 } 8919 8920 static void hci_iso_stream_finalize(hci_iso_stream_t * iso_stream){ 8921 log_info("hci_iso_stream_finalize con_handle 0x%04x, big_handle 0x%02x", iso_stream->con_handle, iso_stream->big_handle); 8922 btstack_linked_list_remove(&hci_stack->iso_streams, (btstack_linked_item_t*) iso_stream); 8923 btstack_memory_hci_iso_stream_free(iso_stream); 8924 } 8925 8926 static void hci_iso_stream_requested_finalize(uint8_t big_handle) { 8927 btstack_linked_list_iterator_t it; 8928 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8929 while (btstack_linked_list_iterator_has_next(&it)){ 8930 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8931 if ((iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) && 8932 (iso_stream->big_handle == big_handle)){ 8933 btstack_linked_list_iterator_remove(&it); 8934 btstack_memory_hci_iso_stream_free(iso_stream); 8935 } 8936 } 8937 } 8938 static void hci_iso_stream_requested_confirm(uint8_t big_handle){ 8939 btstack_linked_list_iterator_t it; 8940 btstack_linked_list_iterator_init(&it, &hci_stack->iso_streams); 8941 while (btstack_linked_list_iterator_has_next(&it)){ 8942 hci_iso_stream_t * iso_stream = (hci_iso_stream_t *) btstack_linked_list_iterator_next(&it); 8943 if ( iso_stream->state == HCI_ISO_STREAM_STATE_REQUESTED ) { 8944 iso_stream->state = HCI_ISO_STREAM_STATE_W4_ESTABLISHED; 8945 } 8946 } 8947 } 8948 8949 static bool hci_iso_sdu_complete(uint8_t * packet, uint16_t size){ 8950 uint8_t sdu_ts_flag = (packet[1] >> 6) & 1; 8951 uint16_t sdu_len_offset = 6 + (sdu_ts_flag * 4); 8952 uint16_t sdu_len = little_endian_read_16(packet, sdu_len_offset) & 0x0fff; 8953 return (sdu_len_offset + 2 + sdu_len) == size; 8954 } 8955 8956 static void hci_iso_packet_handler(uint8_t * packet, uint16_t size){ 8957 if (hci_stack->iso_packet_handler == NULL) { 8958 return; 8959 } 8960 if (size < 4) { 8961 return; 8962 } 8963 8964 // parse header 8965 uint16_t conn_handle_and_flags = little_endian_read_16(packet, 0); 8966 uint16_t iso_data_len = little_endian_read_16(packet, 2); 8967 hci_con_handle_t cis_handle = (hci_con_handle_t) (conn_handle_and_flags & 0xfff); 8968 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(cis_handle); 8969 uint8_t pb_flag = (conn_handle_and_flags >> 12) & 3; 8970 8971 // assert packet is complete 8972 if ((iso_data_len + 4u) != size){ 8973 return; 8974 } 8975 8976 if ((pb_flag & 0x01) == 0){ 8977 if (pb_flag == 0x02){ 8978 // The ISO_Data_Load field contains a header and a complete SDU. 8979 if (hci_iso_sdu_complete(packet, size)) { 8980 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, packet, size); 8981 } 8982 } else { 8983 // The ISO_Data_Load field contains a header and the first fragment of a fragmented SDU. 8984 if (iso_stream == NULL){ 8985 return; 8986 } 8987 if (size > HCI_ISO_PAYLOAD_SIZE){ 8988 return; 8989 } 8990 memcpy(iso_stream->reassembly_buffer, packet, size); 8991 // fix pb_flag 8992 iso_stream->reassembly_buffer[1] = (iso_stream->reassembly_buffer[1] & 0xcf) | 0x20; 8993 iso_stream->reassembly_pos = size; 8994 } 8995 } else { 8996 // iso_data_load contains continuation or last fragment of an SDU 8997 uint8_t ts_flag = (conn_handle_and_flags >> 14) & 1; 8998 if (ts_flag != 0){ 8999 return; 9000 } 9001 // append fragment 9002 if (iso_stream == NULL){ 9003 return; 9004 } 9005 if (iso_stream->reassembly_pos == 0){ 9006 return; 9007 } 9008 if ((iso_stream->reassembly_pos + iso_data_len) > size){ 9009 // reset reassembly buffer 9010 iso_stream->reassembly_pos = 0; 9011 return; 9012 } 9013 memcpy(&iso_stream->reassembly_buffer[iso_stream->reassembly_pos], &packet[4], iso_data_len); 9014 iso_stream->reassembly_pos += iso_data_len; 9015 9016 // deliver if last fragment and SDU complete 9017 if (pb_flag == 0x03){ 9018 if (hci_iso_sdu_complete(iso_stream->reassembly_buffer, iso_stream->reassembly_pos)){ 9019 (hci_stack->iso_packet_handler)(HCI_ISO_DATA_PACKET, 0, iso_stream->reassembly_buffer, iso_stream->reassembly_pos); 9020 } 9021 iso_stream->reassembly_pos = 0; 9022 } 9023 } 9024 } 9025 9026 static void hci_emit_big_created(const le_audio_big_t * big, uint8_t status){ 9027 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9028 uint16_t pos = 0; 9029 event[pos++] = HCI_EVENT_META_GAP; 9030 event[pos++] = 4 + (2 * big->num_bis); 9031 event[pos++] = GAP_SUBEVENT_BIG_CREATED; 9032 event[pos++] = status; 9033 event[pos++] = big->big_handle; 9034 event[pos++] = big->num_bis; 9035 uint8_t i; 9036 for (i=0;i<big->num_bis;i++){ 9037 little_endian_store_16(event, pos, big->bis_con_handles[i]); 9038 pos += 2; 9039 } 9040 hci_emit_event(event, pos, 0); 9041 } 9042 9043 static void hci_emit_big_terminated(const le_audio_big_t * big){ 9044 uint8_t event [4]; 9045 uint16_t pos = 0; 9046 event[pos++] = HCI_EVENT_META_GAP; 9047 event[pos++] = 2; 9048 event[pos++] = GAP_SUBEVENT_BIG_TERMINATED; 9049 event[pos++] = big->big_handle; 9050 hci_emit_event(event, pos, 0); 9051 } 9052 9053 static void hci_emit_big_sync_created(const le_audio_big_sync_t * big_sync, uint8_t status){ 9054 uint8_t event [6 + (MAX_NR_BIS * 2)]; 9055 uint16_t pos = 0; 9056 event[pos++] = HCI_EVENT_META_GAP; 9057 event[pos++] = 4; 9058 event[pos++] = GAP_SUBEVENT_BIG_SYNC_CREATED; 9059 event[pos++] = status; 9060 event[pos++] = big_sync->big_handle; 9061 event[pos++] = big_sync->num_bis; 9062 uint8_t i; 9063 for (i=0;i<big_sync->num_bis;i++){ 9064 little_endian_store_16(event, pos, big_sync->bis_con_handles[i]); 9065 pos += 2; 9066 } 9067 hci_emit_event(event, pos, 0); 9068 } 9069 9070 static void hci_emit_big_sync_stopped(const le_audio_big_sync_t * big_sync){ 9071 uint8_t event [4]; 9072 uint16_t pos = 0; 9073 event[pos++] = HCI_EVENT_META_GAP; 9074 event[pos++] = 2; 9075 event[pos++] = GAP_SUBEVENT_BIG_SYNC_STOPPED; 9076 event[pos++] = big_sync->big_handle; 9077 hci_emit_event(event, pos, 0); 9078 } 9079 9080 static void hci_emit_bis_can_send_now(const le_audio_big_t *big, uint8_t bis_index) { 9081 uint8_t event[6]; 9082 uint16_t pos = 0; 9083 event[pos++] = HCI_EVENT_BIS_CAN_SEND_NOW; 9084 event[pos++] = sizeof(event) - 2; 9085 event[pos++] = big->big_handle; 9086 event[pos++] = bis_index; 9087 little_endian_store_16(event, pos, big->bis_con_handles[bis_index]); 9088 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 9089 } 9090 9091 static le_audio_big_t * hci_big_for_handle(uint8_t big_handle){ 9092 btstack_linked_list_iterator_t it; 9093 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9094 while (btstack_linked_list_iterator_has_next(&it)){ 9095 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9096 if ( big->big_handle == big_handle ) { 9097 return big; 9098 } 9099 } 9100 return NULL; 9101 } 9102 9103 static le_audio_big_sync_t * hci_big_sync_for_handle(uint8_t big_handle){ 9104 btstack_linked_list_iterator_t it; 9105 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_big_syncs); 9106 while (btstack_linked_list_iterator_has_next(&it)){ 9107 le_audio_big_sync_t * big_sync = (le_audio_big_sync_t *) btstack_linked_list_iterator_next(&it); 9108 if ( big_sync->big_handle == big_handle ) { 9109 return big_sync; 9110 } 9111 } 9112 return NULL; 9113 } 9114 9115 void hci_set_num_iso_packets_to_queue(uint8_t num_packets){ 9116 hci_stack->iso_packets_to_queue = num_packets; 9117 } 9118 9119 static void hci_iso_notify_can_send_now(void){ 9120 btstack_linked_list_iterator_t it; 9121 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9122 while (btstack_linked_list_iterator_has_next(&it)){ 9123 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9124 if (big->can_send_now_requested){ 9125 // check if no outgoing iso packets pending and no can send now have to be emitted 9126 uint8_t i; 9127 bool can_send = true; 9128 for (i=0;i<big->num_bis;i++){ 9129 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9130 if ((iso_stream == NULL) || (iso_stream->num_packets_sent >= hci_stack->iso_packets_to_queue) || (iso_stream->emit_ready_to_send)){ 9131 can_send = false; 9132 break; 9133 } 9134 } 9135 if (can_send){ 9136 // propagate can send now to individual streams 9137 big->can_send_now_requested = false; 9138 for (i=0;i<big->num_bis;i++){ 9139 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9140 iso_stream->emit_ready_to_send = true; 9141 } 9142 } 9143 } 9144 } 9145 9146 if (hci_stack->hci_packet_buffer_reserved) return; 9147 9148 btstack_linked_list_iterator_init(&it, &hci_stack->le_audio_bigs); 9149 while (btstack_linked_list_iterator_has_next(&it)){ 9150 le_audio_big_t * big = (le_audio_big_t *) btstack_linked_list_iterator_next(&it); 9151 // report bis ready 9152 uint8_t i; 9153 for (i=0;i<big->num_bis;i++){ 9154 hci_iso_stream_t * iso_stream = hci_iso_stream_for_con_handle(big->bis_con_handles[i]); 9155 if ((iso_stream != NULL) && iso_stream->emit_ready_to_send){ 9156 iso_stream->emit_ready_to_send = false; 9157 hci_emit_bis_can_send_now(big, i); 9158 break; 9159 } 9160 } 9161 } 9162 } 9163 9164 uint8_t gap_big_create(le_audio_big_t * storage, le_audio_big_params_t * big_params){ 9165 if (hci_big_for_handle(big_params->big_handle) != NULL){ 9166 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9167 } 9168 if (big_params->num_bis == 0){ 9169 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9170 } 9171 if (big_params->num_bis > MAX_NR_BIS){ 9172 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9173 } 9174 9175 // reserve ISO Streams 9176 uint8_t i; 9177 uint8_t status = ERROR_CODE_SUCCESS; 9178 for (i=0;i<big_params->num_bis;i++){ 9179 status = hci_iso_stream_create(HCI_CON_HANDLE_INVALID, big_params->big_handle); 9180 if (status != ERROR_CODE_SUCCESS) { 9181 break; 9182 } 9183 } 9184 9185 // free structs on error 9186 if (status != ERROR_CODE_SUCCESS){ 9187 hci_iso_stream_requested_finalize(big_params->big_handle); 9188 return status; 9189 } 9190 9191 le_audio_big_t * big = storage; 9192 big->big_handle = big_params->big_handle; 9193 big->params = big_params; 9194 big->state = LE_AUDIO_BIG_STATE_CREATE; 9195 big->num_bis = big_params->num_bis; 9196 btstack_linked_list_add(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9197 9198 hci_run(); 9199 9200 return ERROR_CODE_SUCCESS; 9201 } 9202 9203 uint8_t gap_big_sync_create(le_audio_big_sync_t * storage, le_audio_big_sync_params_t * big_sync_params){ 9204 if (hci_big_sync_for_handle(big_sync_params->big_handle) != NULL){ 9205 return ERROR_CODE_ACL_CONNECTION_ALREADY_EXISTS; 9206 } 9207 if (big_sync_params->num_bis == 0){ 9208 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9209 } 9210 if (big_sync_params->num_bis > MAX_NR_BIS){ 9211 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 9212 } 9213 9214 le_audio_big_sync_t * big_sync = storage; 9215 big_sync->big_handle = big_sync_params->big_handle; 9216 big_sync->params = big_sync_params; 9217 big_sync->state = LE_AUDIO_BIG_STATE_CREATE; 9218 big_sync->num_bis = big_sync_params->num_bis; 9219 btstack_linked_list_add(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9220 9221 hci_run(); 9222 9223 return ERROR_CODE_SUCCESS; 9224 } 9225 9226 uint8_t gap_big_terminate(uint8_t big_handle){ 9227 le_audio_big_t * big = hci_big_for_handle(big_handle); 9228 if (big == NULL){ 9229 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9230 } 9231 switch (big->state){ 9232 case LE_AUDIO_BIG_STATE_CREATE: 9233 btstack_linked_list_remove(&hci_stack->le_audio_bigs, (btstack_linked_item_t *) big); 9234 hci_emit_big_terminated(big); 9235 break; 9236 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9237 big->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9238 break; 9239 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9240 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9241 case LE_AUDIO_BIG_STATE_ACTIVE: 9242 big->state = LE_AUDIO_BIG_STATE_TERMINATE; 9243 hci_run(); 9244 break; 9245 default: 9246 return ERROR_CODE_COMMAND_DISALLOWED; 9247 } 9248 return ERROR_CODE_SUCCESS; 9249 } 9250 9251 uint8_t gap_big_sync_terminate(uint8_t big_handle){ 9252 le_audio_big_sync_t * big_sync = hci_big_sync_for_handle(big_handle); 9253 if (big_sync == NULL){ 9254 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9255 } 9256 switch (big_sync->state){ 9257 case LE_AUDIO_BIG_STATE_CREATE: 9258 btstack_linked_list_remove(&hci_stack->le_audio_big_syncs, (btstack_linked_item_t *) big_sync); 9259 hci_emit_big_sync_stopped(big_sync); 9260 break; 9261 case LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH: 9262 big_sync->state = LE_AUDIO_BIG_STATE_W4_SETUP_ISO_PATH_THEN_TERMINATE; 9263 break; 9264 case LE_AUDIO_BIG_STATE_W4_ESTABLISHED: 9265 case LE_AUDIO_BIG_STATE_SETUP_ISO_PATH: 9266 case LE_AUDIO_BIG_STATE_ACTIVE: 9267 big_sync->state = LE_AUDIO_BIG_STATE_TERMINATE; 9268 hci_run(); 9269 break; 9270 default: 9271 return ERROR_CODE_COMMAND_DISALLOWED; 9272 } 9273 return ERROR_CODE_SUCCESS; 9274 } 9275 9276 uint8_t hci_request_bis_can_send_now_events(uint8_t big_handle){ 9277 le_audio_big_t * big = hci_big_for_handle(big_handle); 9278 if (big == NULL){ 9279 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 9280 } 9281 if (big->state != LE_AUDIO_BIG_STATE_ACTIVE){ 9282 return ERROR_CODE_COMMAND_DISALLOWED; 9283 } 9284 big->can_send_now_requested = true; 9285 hci_iso_notify_can_send_now(); 9286 return ERROR_CODE_SUCCESS; 9287 } 9288 #endif 9289 #endif /* ENABLE_BLE */ 9290 9291 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 9292 void hci_setup_test_connections_fuzz(void){ 9293 hci_connection_t * conn; 9294 9295 // default address: 66:55:44:33:00:01 9296 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 9297 9298 // setup Controller info 9299 hci_stack->num_cmd_packets = 255; 9300 hci_stack->acl_packets_total_num = 255; 9301 9302 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 9303 addr[5] = 0x01; 9304 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9305 conn->con_handle = addr[5]; 9306 conn->role = HCI_ROLE_SLAVE; 9307 conn->state = RECEIVED_CONNECTION_REQUEST; 9308 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9309 9310 // setup incoming Classic SCO connection with con handle 0x0002 9311 addr[5] = 0x02; 9312 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9313 conn->con_handle = addr[5]; 9314 conn->role = HCI_ROLE_SLAVE; 9315 conn->state = RECEIVED_CONNECTION_REQUEST; 9316 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9317 9318 // setup ready Classic ACL connection with con handle 0x0003 9319 addr[5] = 0x03; 9320 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 9321 conn->con_handle = addr[5]; 9322 conn->role = HCI_ROLE_SLAVE; 9323 conn->state = OPEN; 9324 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9325 9326 // setup ready Classic SCO connection with con handle 0x0004 9327 addr[5] = 0x04; 9328 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 9329 conn->con_handle = addr[5]; 9330 conn->role = HCI_ROLE_SLAVE; 9331 conn->state = OPEN; 9332 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9333 9334 // setup ready LE ACL connection with con handle 0x005 and public address 9335 addr[5] = 0x05; 9336 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 9337 conn->con_handle = addr[5]; 9338 conn->role = HCI_ROLE_SLAVE; 9339 conn->state = OPEN; 9340 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 9341 conn->sm_connection.sm_connection_encrypted = 1; 9342 } 9343 9344 void hci_free_connections_fuzz(void){ 9345 btstack_linked_list_iterator_t it; 9346 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 9347 while (btstack_linked_list_iterator_has_next(&it)){ 9348 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 9349 btstack_linked_list_iterator_remove(&it); 9350 btstack_memory_hci_connection_free(con); 9351 } 9352 } 9353 void hci_simulate_working_fuzz(void){ 9354 hci_stack->le_scanning_param_update = false; 9355 hci_init_done(); 9356 hci_stack->num_cmd_packets = 255; 9357 } 9358 #endif 9359