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 MATTHIAS 24 * RINGWALD 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 HAVE_PLATFORM_IPHONE_OS 57 #include "../port/ios/src/btstack_control_iphone.h" 58 #endif 59 60 #ifdef ENABLE_BLE 61 #include "gap.h" 62 #include "ble/le_device_db.h" 63 #endif 64 65 #include <stdarg.h> 66 #include <string.h> 67 #include <inttypes.h> 68 69 #include "btstack_debug.h" 70 #include "btstack_event.h" 71 #include "btstack_linked_list.h" 72 #include "btstack_memory.h" 73 #include "bluetooth_company_id.h" 74 #include "bluetooth_data_types.h" 75 #include "gap.h" 76 #include "hci.h" 77 #include "hci_cmd.h" 78 #include "hci_dump.h" 79 #include "ad_parser.h" 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 #define HCI_CONNECTION_TIMEOUT_MS 10000 97 98 #ifndef HCI_RESET_RESEND_TIMEOUT_MS 99 #define HCI_RESET_RESEND_TIMEOUT_MS 200 100 #endif 101 102 // Names are arbitrarily shortened to 32 bytes if not requested otherwise 103 #ifndef GAP_INQUIRY_MAX_NAME_LEN 104 #define GAP_INQUIRY_MAX_NAME_LEN 32 105 #endif 106 107 // GAP inquiry state: 0 = off, 0x01 - 0x30 = requested duration, 0xfe = active, 0xff = stop requested 108 #define GAP_INQUIRY_DURATION_MIN 0x01 109 #define GAP_INQUIRY_DURATION_MAX 0x30 110 #define GAP_INQUIRY_STATE_ACTIVE 0x80 111 #define GAP_INQUIRY_STATE_IDLE 0 112 #define GAP_INQUIRY_STATE_W2_CANCEL 0x81 113 #define GAP_INQUIRY_STATE_W4_CANCELLED 0x82 114 115 // GAP Remote Name Request 116 #define GAP_REMOTE_NAME_STATE_IDLE 0 117 #define GAP_REMOTE_NAME_STATE_W2_SEND 1 118 #define GAP_REMOTE_NAME_STATE_W4_COMPLETE 2 119 120 // GAP Pairing 121 #define GAP_PAIRING_STATE_IDLE 0 122 #define GAP_PAIRING_STATE_SEND_PIN 1 123 #define GAP_PAIRING_STATE_SEND_PIN_NEGATIVE 2 124 #define GAP_PAIRING_STATE_SEND_PASSKEY 3 125 #define GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE 4 126 #define GAP_PAIRING_STATE_SEND_CONFIRMATION 5 127 #define GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE 6 128 129 130 // prototypes 131 #ifdef ENABLE_CLASSIC 132 static void hci_update_scan_enable(void); 133 static void hci_emit_discoverable_enabled(uint8_t enabled); 134 static int hci_local_ssp_activated(void); 135 static int hci_remote_ssp_supported(hci_con_handle_t con_handle); 136 static bool hci_ssp_supported(hci_connection_t * connection); 137 static void hci_notify_if_sco_can_send_now(void); 138 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status); 139 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection); 140 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level); 141 static void hci_connection_timeout_handler(btstack_timer_source_t *timer); 142 static void hci_connection_timestamp(hci_connection_t *connection); 143 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn); 144 static void gap_inquiry_explode(uint8_t *packet, uint16_t size); 145 #endif 146 147 static int hci_power_control_on(void); 148 static void hci_power_control_off(void); 149 static void hci_state_reset(void); 150 static void hci_emit_transport_packet_sent(void); 151 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason); 152 static void hci_emit_nr_connections_changed(void); 153 static void hci_emit_hci_open_failed(void); 154 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status); 155 static void hci_emit_event(uint8_t * event, uint16_t size, int dump); 156 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size); 157 static void hci_run(void); 158 static int hci_is_le_connection(hci_connection_t * connection); 159 static int hci_number_free_acl_slots_for_connection_type( bd_addr_type_t address_type); 160 161 #ifdef ENABLE_CLASSIC 162 static int hci_have_usb_transport(void); 163 #endif 164 165 #ifdef ENABLE_BLE 166 #ifdef ENABLE_LE_CENTRAL 167 // called from test/ble_client/advertising_data_parser.c 168 void le_handle_advertisement_report(uint8_t *packet, uint16_t size); 169 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address); 170 static hci_connection_t * gap_get_outgoing_connection(void); 171 #endif 172 #endif 173 174 // the STACK is here 175 #ifndef HAVE_MALLOC 176 static hci_stack_t hci_stack_static; 177 #endif 178 static hci_stack_t * hci_stack = NULL; 179 180 #ifdef ENABLE_CLASSIC 181 // default name 182 static const char * default_classic_name = "BTstack 00:00:00:00:00:00"; 183 184 // test helper 185 static uint8_t disable_l2cap_timeouts = 0; 186 #endif 187 188 /** 189 * create connection for given address 190 * 191 * @return connection OR NULL, if no memory left 192 */ 193 static hci_connection_t * create_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 194 log_info("create_connection_for_addr %s, type %x", bd_addr_to_str(addr), addr_type); 195 hci_connection_t * conn = btstack_memory_hci_connection_get(); 196 if (!conn) return NULL; 197 bd_addr_copy(conn->address, addr); 198 conn->role = HCI_ROLE_INVALID; 199 conn->address_type = addr_type; 200 conn->con_handle = 0xffff; 201 conn->authentication_flags = AUTH_FLAGS_NONE; 202 conn->bonding_flags = 0; 203 conn->requested_security_level = LEVEL_0; 204 #ifdef ENABLE_CLASSIC 205 conn->request_role = HCI_ROLE_INVALID; 206 btstack_run_loop_set_timer_handler(&conn->timeout, hci_connection_timeout_handler); 207 btstack_run_loop_set_timer_context(&conn->timeout, conn); 208 hci_connection_timestamp(conn); 209 #endif 210 conn->acl_recombination_length = 0; 211 conn->acl_recombination_pos = 0; 212 conn->num_packets_sent = 0; 213 214 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 215 #ifdef ENABLE_BLE 216 conn->le_phy_update_all_phys = 0xff; 217 #endif 218 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 219 conn->le_max_tx_octets = 27; 220 #endif 221 btstack_linked_list_add(&hci_stack->connections, (btstack_linked_item_t *) conn); 222 return conn; 223 } 224 225 226 /** 227 * get le connection parameter range 228 * 229 * @return le connection parameter range struct 230 */ 231 void gap_get_connection_parameter_range(le_connection_parameter_range_t * range){ 232 *range = hci_stack->le_connection_parameter_range; 233 } 234 235 /** 236 * set le connection parameter range 237 * 238 */ 239 240 void gap_set_connection_parameter_range(le_connection_parameter_range_t *range){ 241 hci_stack->le_connection_parameter_range = *range; 242 } 243 244 /** 245 * @brief Test if connection parameters are inside in existing rage 246 * @param conn_interval_min (unit: 1.25ms) 247 * @param conn_interval_max (unit: 1.25ms) 248 * @param conn_latency 249 * @param supervision_timeout (unit: 10ms) 250 * @returns 1 if included 251 */ 252 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){ 253 if (le_conn_interval_min < existing_range->le_conn_interval_min) return 0; 254 if (le_conn_interval_max > existing_range->le_conn_interval_max) return 0; 255 256 if (le_conn_latency < existing_range->le_conn_latency_min) return 0; 257 if (le_conn_latency > existing_range->le_conn_latency_max) return 0; 258 259 if (le_supervision_timeout < existing_range->le_supervision_timeout_min) return 0; 260 if (le_supervision_timeout > existing_range->le_supervision_timeout_max) return 0; 261 262 return 1; 263 } 264 265 /** 266 * @brief Set max number of connections in LE Peripheral role (if Bluetooth Controller supports it) 267 * @note: default: 1 268 * @param max_peripheral_connections 269 */ 270 #ifdef ENABLE_LE_PERIPHERAL 271 void gap_set_max_number_peripheral_connections(int max_peripheral_connections){ 272 hci_stack->le_max_number_peripheral_connections = max_peripheral_connections; 273 } 274 #endif 275 276 /** 277 * get hci connections iterator 278 * 279 * @return hci connections iterator 280 */ 281 282 void hci_connections_get_iterator(btstack_linked_list_iterator_t *it){ 283 btstack_linked_list_iterator_init(it, &hci_stack->connections); 284 } 285 286 /** 287 * get connection for a given handle 288 * 289 * @return connection OR NULL, if not found 290 */ 291 hci_connection_t * hci_connection_for_handle(hci_con_handle_t con_handle){ 292 btstack_linked_list_iterator_t it; 293 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 294 while (btstack_linked_list_iterator_has_next(&it)){ 295 hci_connection_t * item = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 296 if ( item->con_handle == con_handle ) { 297 return item; 298 } 299 } 300 return NULL; 301 } 302 303 /** 304 * get connection for given address 305 * 306 * @return connection OR NULL, if not found 307 */ 308 hci_connection_t * hci_connection_for_bd_addr_and_type(const bd_addr_t addr, bd_addr_type_t addr_type){ 309 btstack_linked_list_iterator_t it; 310 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 311 while (btstack_linked_list_iterator_has_next(&it)){ 312 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 313 if (connection->address_type != addr_type) continue; 314 if (memcmp(addr, connection->address, 6) != 0) continue; 315 return connection; 316 } 317 return NULL; 318 } 319 320 inline static void connectionClearAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 321 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags & ~flags); 322 } 323 324 inline static void connectionSetAuthenticationFlags(hci_connection_t * conn, hci_authentication_flags_t flags){ 325 conn->authentication_flags = (hci_authentication_flags_t)(conn->authentication_flags | flags); 326 } 327 328 #ifdef ENABLE_CLASSIC 329 330 #ifdef ENABLE_SCO_OVER_HCI 331 static int hci_number_sco_connections(void){ 332 int connections = 0; 333 btstack_linked_list_iterator_t it; 334 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 335 while (btstack_linked_list_iterator_has_next(&it)){ 336 hci_connection_t * connection = (hci_connection_t *) btstack_linked_list_iterator_next(&it); 337 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 338 connections++; 339 } 340 return connections; 341 } 342 #endif 343 344 static void hci_connection_timeout_handler(btstack_timer_source_t *timer){ 345 hci_connection_t * connection = (hci_connection_t *) btstack_run_loop_get_timer_context(timer); 346 #ifdef HAVE_EMBEDDED_TICK 347 if (btstack_run_loop_embedded_get_ticks() > connection->timestamp + btstack_run_loop_embedded_ticks_for_ms(HCI_CONNECTION_TIMEOUT_MS)){ 348 // connections might be timed out 349 hci_emit_l2cap_check_timeout(connection); 350 } 351 #else 352 if (btstack_run_loop_get_time_ms() > (connection->timestamp + HCI_CONNECTION_TIMEOUT_MS)){ 353 // connections might be timed out 354 hci_emit_l2cap_check_timeout(connection); 355 } 356 #endif 357 } 358 359 static void hci_connection_timestamp(hci_connection_t *connection){ 360 #ifdef HAVE_EMBEDDED_TICK 361 connection->timestamp = btstack_run_loop_embedded_get_ticks(); 362 #else 363 connection->timestamp = btstack_run_loop_get_time_ms(); 364 #endif 365 } 366 367 /** 368 * add authentication flags and reset timer 369 * @note: assumes classic connection 370 * @note: bd_addr is passed in as litle endian uint8_t * as it is called from parsing packets 371 */ 372 static void hci_add_connection_flags_for_flipped_bd_addr(uint8_t *bd_addr, hci_authentication_flags_t flags){ 373 bd_addr_t addr; 374 reverse_bd_addr(bd_addr, addr); 375 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 376 if (conn) { 377 connectionSetAuthenticationFlags(conn, flags); 378 hci_connection_timestamp(conn); 379 } 380 } 381 382 int hci_authentication_active_for_handle(hci_con_handle_t handle){ 383 hci_connection_t * conn = hci_connection_for_handle(handle); 384 if (!conn) return 0; 385 if (conn->authentication_flags & LEGACY_PAIRING_ACTIVE) return 1; 386 if (conn->authentication_flags & SSP_PAIRING_ACTIVE) return 1; 387 return 0; 388 } 389 390 void gap_drop_link_key_for_bd_addr(bd_addr_t addr){ 391 if (!hci_stack->link_key_db) return; 392 log_info("gap_drop_link_key_for_bd_addr: %s", bd_addr_to_str(addr)); 393 hci_stack->link_key_db->delete_link_key(addr); 394 } 395 396 void gap_store_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t type){ 397 if (!hci_stack->link_key_db) return; 398 log_info("gap_store_link_key_for_bd_addr: %s, type %u", bd_addr_to_str(addr), type); 399 hci_stack->link_key_db->put_link_key(addr, link_key, type); 400 } 401 402 bool gap_get_link_key_for_bd_addr(bd_addr_t addr, link_key_t link_key, link_key_type_t * type){ 403 if (!hci_stack->link_key_db) return false; 404 int result = hci_stack->link_key_db->get_link_key(addr, link_key, type) != 0; 405 log_info("link key for %s available %u, type %u", bd_addr_to_str(addr), result, (int) *type); 406 return result; 407 } 408 409 void gap_delete_all_link_keys(void){ 410 bd_addr_t addr; 411 link_key_t link_key; 412 link_key_type_t type; 413 btstack_link_key_iterator_t it; 414 int ok = gap_link_key_iterator_init(&it); 415 if (!ok) { 416 log_error("could not initialize iterator"); 417 return; 418 } 419 while (gap_link_key_iterator_get_next(&it, addr, link_key, &type)){ 420 gap_drop_link_key_for_bd_addr(addr); 421 } 422 gap_link_key_iterator_done(&it); 423 } 424 425 int gap_link_key_iterator_init(btstack_link_key_iterator_t * it){ 426 if (!hci_stack->link_key_db) return 0; 427 if (!hci_stack->link_key_db->iterator_init) return 0; 428 return hci_stack->link_key_db->iterator_init(it); 429 } 430 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){ 431 if (!hci_stack->link_key_db) return 0; 432 return hci_stack->link_key_db->iterator_get_next(it, bd_addr, link_key, type); 433 } 434 void gap_link_key_iterator_done(btstack_link_key_iterator_t * it){ 435 if (!hci_stack->link_key_db) return; 436 hci_stack->link_key_db->iterator_done(it); 437 } 438 #endif 439 440 static bool hci_is_le_connection_type(bd_addr_type_t address_type){ 441 switch (address_type){ 442 case BD_ADDR_TYPE_LE_PUBLIC: 443 case BD_ADDR_TYPE_LE_RANDOM: 444 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_PUBLIC: 445 case BD_ADDR_TYPE_LE_PRIVAT_FALLBACK_RANDOM: 446 return true; 447 default: 448 return false; 449 } 450 } 451 452 static int hci_is_le_connection(hci_connection_t * connection){ 453 return hci_is_le_connection_type(connection->address_type); 454 } 455 456 /** 457 * count connections 458 */ 459 static int nr_hci_connections(void){ 460 int count = 0; 461 btstack_linked_item_t *it; 462 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL ; it = it->next){ 463 count++; 464 } 465 return count; 466 } 467 468 static int hci_number_free_acl_slots_for_connection_type(bd_addr_type_t address_type){ 469 470 unsigned int num_packets_sent_classic = 0; 471 unsigned int num_packets_sent_le = 0; 472 473 btstack_linked_item_t *it; 474 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 475 hci_connection_t * connection = (hci_connection_t *) it; 476 if (hci_is_le_connection(connection)){ 477 num_packets_sent_le += connection->num_packets_sent; 478 } 479 if (connection->address_type == BD_ADDR_TYPE_ACL){ 480 num_packets_sent_classic += connection->num_packets_sent; 481 } 482 } 483 log_debug("ACL classic buffers: %u used of %u", num_packets_sent_classic, hci_stack->acl_packets_total_num); 484 int free_slots_classic = hci_stack->acl_packets_total_num - num_packets_sent_classic; 485 int free_slots_le = 0; 486 487 if (free_slots_classic < 0){ 488 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); 489 return 0; 490 } 491 492 if (hci_stack->le_acl_packets_total_num){ 493 // if we have LE slots, they are used 494 free_slots_le = hci_stack->le_acl_packets_total_num - num_packets_sent_le; 495 if (free_slots_le < 0){ 496 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); 497 return 0; 498 } 499 } else { 500 // otherwise, classic slots are used for LE, too 501 free_slots_classic -= num_packets_sent_le; 502 if (free_slots_classic < 0){ 503 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); 504 return 0; 505 } 506 } 507 508 switch (address_type){ 509 case BD_ADDR_TYPE_UNKNOWN: 510 log_error("hci_number_free_acl_slots: unknown address type"); 511 return 0; 512 513 case BD_ADDR_TYPE_ACL: 514 return free_slots_classic; 515 516 default: 517 if (hci_stack->le_acl_packets_total_num){ 518 return free_slots_le; 519 } 520 return free_slots_classic; 521 } 522 } 523 524 int hci_number_free_acl_slots_for_handle(hci_con_handle_t con_handle){ 525 // get connection type 526 hci_connection_t * connection = hci_connection_for_handle(con_handle); 527 if (!connection){ 528 log_error("hci_number_free_acl_slots: handle 0x%04x not in connection list", con_handle); 529 return 0; 530 } 531 return hci_number_free_acl_slots_for_connection_type(connection->address_type); 532 } 533 534 #ifdef ENABLE_CLASSIC 535 static int hci_number_free_sco_slots(void){ 536 unsigned int num_sco_packets_sent = 0; 537 btstack_linked_item_t *it; 538 if (hci_stack->synchronous_flow_control_enabled){ 539 // explicit flow control 540 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 541 hci_connection_t * connection = (hci_connection_t *) it; 542 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 543 num_sco_packets_sent += connection->num_packets_sent; 544 } 545 if (num_sco_packets_sent > hci_stack->sco_packets_total_num){ 546 log_info("hci_number_free_sco_slots:packets (%u) > total packets (%u)", num_sco_packets_sent, hci_stack->sco_packets_total_num); 547 return 0; 548 } 549 return hci_stack->sco_packets_total_num - num_sco_packets_sent; 550 } else { 551 // implicit flow control -- TODO 552 int num_ready = 0; 553 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 554 hci_connection_t * connection = (hci_connection_t *) it; 555 if (connection->address_type != BD_ADDR_TYPE_SCO) continue; 556 if (connection->sco_tx_ready == 0) continue; 557 num_ready++; 558 } 559 return num_ready; 560 } 561 } 562 #endif 563 564 // only used to send HCI Host Number Completed Packets 565 static int hci_can_send_comand_packet_transport(void){ 566 if (hci_stack->hci_packet_buffer_reserved) return 0; 567 568 // check for async hci transport implementations 569 if (hci_stack->hci_transport->can_send_packet_now){ 570 if (!hci_stack->hci_transport->can_send_packet_now(HCI_COMMAND_DATA_PACKET)){ 571 return 0; 572 } 573 } 574 return 1; 575 } 576 577 // new functions replacing hci_can_send_packet_now[_using_packet_buffer] 578 int hci_can_send_command_packet_now(void){ 579 if (hci_can_send_comand_packet_transport() == 0) return 0; 580 return hci_stack->num_cmd_packets > 0u; 581 } 582 583 static int hci_transport_can_send_prepared_packet_now(uint8_t packet_type){ 584 // check for async hci transport implementations 585 if (!hci_stack->hci_transport->can_send_packet_now) return 1; 586 return hci_stack->hci_transport->can_send_packet_now(packet_type); 587 } 588 589 static int hci_can_send_prepared_acl_packet_for_address_type(bd_addr_type_t address_type){ 590 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return 0; 591 return hci_number_free_acl_slots_for_connection_type(address_type) > 0; 592 } 593 594 int hci_can_send_acl_le_packet_now(void){ 595 if (hci_stack->hci_packet_buffer_reserved) return 0; 596 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_LE_PUBLIC); 597 } 598 599 int hci_can_send_prepared_acl_packet_now(hci_con_handle_t con_handle) { 600 if (!hci_transport_can_send_prepared_packet_now(HCI_ACL_DATA_PACKET)) return 0; 601 return hci_number_free_acl_slots_for_handle(con_handle) > 0; 602 } 603 604 int hci_can_send_acl_packet_now(hci_con_handle_t con_handle){ 605 if (hci_stack->hci_packet_buffer_reserved) return 0; 606 return hci_can_send_prepared_acl_packet_now(con_handle); 607 } 608 609 #ifdef ENABLE_CLASSIC 610 int hci_can_send_acl_classic_packet_now(void){ 611 if (hci_stack->hci_packet_buffer_reserved) return 0; 612 return hci_can_send_prepared_acl_packet_for_address_type(BD_ADDR_TYPE_ACL); 613 } 614 615 int hci_can_send_prepared_sco_packet_now(void){ 616 if (!hci_transport_can_send_prepared_packet_now(HCI_SCO_DATA_PACKET)) return 0; 617 if (hci_have_usb_transport()){ 618 return hci_stack->sco_can_send_now; 619 } else { 620 return hci_number_free_sco_slots() > 0; 621 } 622 } 623 624 int hci_can_send_sco_packet_now(void){ 625 if (hci_stack->hci_packet_buffer_reserved) return 0; 626 return hci_can_send_prepared_sco_packet_now(); 627 } 628 629 void hci_request_sco_can_send_now_event(void){ 630 hci_stack->sco_waiting_for_can_send_now = 1; 631 hci_notify_if_sco_can_send_now(); 632 } 633 #endif 634 635 // used for internal checks in l2cap.c 636 int hci_is_packet_buffer_reserved(void){ 637 return hci_stack->hci_packet_buffer_reserved; 638 } 639 640 // reserves outgoing packet buffer. @returns 1 if successful 641 int hci_reserve_packet_buffer(void){ 642 if (hci_stack->hci_packet_buffer_reserved) { 643 log_error("hci_reserve_packet_buffer called but buffer already reserved"); 644 return 0; 645 } 646 hci_stack->hci_packet_buffer_reserved = 1; 647 return 1; 648 } 649 650 void hci_release_packet_buffer(void){ 651 hci_stack->hci_packet_buffer_reserved = 0; 652 } 653 654 // assumption: synchronous implementations don't provide can_send_packet_now as they don't keep the buffer after the call 655 static int hci_transport_synchronous(void){ 656 return hci_stack->hci_transport->can_send_packet_now == NULL; 657 } 658 659 static int hci_send_acl_packet_fragments(hci_connection_t *connection){ 660 661 // 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); 662 663 // max ACL data packet length depends on connection type (LE vs. Classic) and available buffers 664 uint16_t max_acl_data_packet_length = hci_stack->acl_data_packet_length; 665 if (hci_is_le_connection(connection) && (hci_stack->le_data_packets_length > 0u)){ 666 max_acl_data_packet_length = hci_stack->le_data_packets_length; 667 } 668 669 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 670 if (hci_is_le_connection(connection)){ 671 max_acl_data_packet_length = connection->le_max_tx_octets; 672 } 673 #endif 674 675 log_debug("hci_send_acl_packet_fragments entered"); 676 677 int err; 678 // multiple packets could be send on a synchronous HCI transport 679 while (true){ 680 681 log_debug("hci_send_acl_packet_fragments loop entered"); 682 683 // get current data 684 const uint16_t acl_header_pos = hci_stack->acl_fragmentation_pos - 4u; 685 int current_acl_data_packet_length = hci_stack->acl_fragmentation_total_size - hci_stack->acl_fragmentation_pos; 686 bool more_fragments = false; 687 688 // if ACL packet is larger than Bluetooth packet buffer, only send max_acl_data_packet_length 689 if (current_acl_data_packet_length > max_acl_data_packet_length){ 690 more_fragments = true; 691 current_acl_data_packet_length = max_acl_data_packet_length; 692 } 693 694 // copy handle_and_flags if not first fragment and update packet boundary flags to be 01 (continuing fragmnent) 695 if (acl_header_pos > 0u){ 696 uint16_t handle_and_flags = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 697 handle_and_flags = (handle_and_flags & 0xcfffu) | (1u << 12u); 698 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos, handle_and_flags); 699 } 700 701 // update header len 702 little_endian_store_16(hci_stack->hci_packet_buffer, acl_header_pos + 2u, current_acl_data_packet_length); 703 704 // count packet 705 connection->num_packets_sent++; 706 log_debug("hci_send_acl_packet_fragments loop before send (more fragments %d)", (int) more_fragments); 707 708 // update state for next fragment (if any) as "transport done" might be sent during send_packet already 709 if (more_fragments){ 710 // update start of next fragment to send 711 hci_stack->acl_fragmentation_pos += current_acl_data_packet_length; 712 } else { 713 // done 714 hci_stack->acl_fragmentation_pos = 0; 715 hci_stack->acl_fragmentation_total_size = 0; 716 } 717 718 // send packet 719 uint8_t * packet = &hci_stack->hci_packet_buffer[acl_header_pos]; 720 const int size = current_acl_data_packet_length + 4; 721 hci_dump_packet(HCI_ACL_DATA_PACKET, 0, packet, size); 722 hci_stack->acl_fragmentation_tx_active = 1; 723 err = hci_stack->hci_transport->send_packet(HCI_ACL_DATA_PACKET, packet, size); 724 725 log_debug("hci_send_acl_packet_fragments loop after send (more fragments %d)", (int) more_fragments); 726 727 // done yet? 728 if (!more_fragments) break; 729 730 // can send more? 731 if (!hci_can_send_prepared_acl_packet_now(connection->con_handle)) return err; 732 } 733 734 log_debug("hci_send_acl_packet_fragments loop over"); 735 736 // release buffer now for synchronous transport 737 if (hci_transport_synchronous()){ 738 hci_stack->acl_fragmentation_tx_active = 0; 739 hci_release_packet_buffer(); 740 hci_emit_transport_packet_sent(); 741 } 742 743 return err; 744 } 745 746 // pre: caller has reserved the packet buffer 747 int hci_send_acl_packet_buffer(int size){ 748 749 // log_info("hci_send_acl_packet_buffer size %u", size); 750 751 if (!hci_stack->hci_packet_buffer_reserved) { 752 log_error("hci_send_acl_packet_buffer called without reserving packet buffer"); 753 return 0; 754 } 755 756 uint8_t * packet = hci_stack->hci_packet_buffer; 757 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 758 759 // check for free places on Bluetooth module 760 if (!hci_can_send_prepared_acl_packet_now(con_handle)) { 761 log_error("hci_send_acl_packet_buffer called but no free ACL buffers on controller"); 762 hci_release_packet_buffer(); 763 hci_emit_transport_packet_sent(); 764 return BTSTACK_ACL_BUFFERS_FULL; 765 } 766 767 hci_connection_t *connection = hci_connection_for_handle( con_handle); 768 if (!connection) { 769 log_error("hci_send_acl_packet_buffer called but no connection for handle 0x%04x", con_handle); 770 hci_release_packet_buffer(); 771 hci_emit_transport_packet_sent(); 772 return 0; 773 } 774 775 #ifdef ENABLE_CLASSIC 776 hci_connection_timestamp(connection); 777 #endif 778 779 // hci_dump_packet( HCI_ACL_DATA_PACKET, 0, packet, size); 780 781 // setup data 782 hci_stack->acl_fragmentation_total_size = size; 783 hci_stack->acl_fragmentation_pos = 4; // start of L2CAP packet 784 785 return hci_send_acl_packet_fragments(connection); 786 } 787 788 #ifdef ENABLE_CLASSIC 789 // pre: caller has reserved the packet buffer 790 int hci_send_sco_packet_buffer(int size){ 791 792 // log_info("hci_send_acl_packet_buffer size %u", size); 793 794 if (!hci_stack->hci_packet_buffer_reserved) { 795 log_error("hci_send_acl_packet_buffer called without reserving packet buffer"); 796 return 0; 797 } 798 799 uint8_t * packet = hci_stack->hci_packet_buffer; 800 801 // skip checks in loopback mode 802 if (!hci_stack->loopback_mode){ 803 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); // same for ACL and SCO 804 805 // check for free places on Bluetooth module 806 if (!hci_can_send_prepared_sco_packet_now()) { 807 log_error("hci_send_sco_packet_buffer called but no free SCO buffers on controller"); 808 hci_release_packet_buffer(); 809 hci_emit_transport_packet_sent(); 810 return BTSTACK_ACL_BUFFERS_FULL; 811 } 812 813 // track send packet in connection struct 814 hci_connection_t *connection = hci_connection_for_handle( con_handle); 815 if (!connection) { 816 log_error("hci_send_sco_packet_buffer called but no connection for handle 0x%04x", con_handle); 817 hci_release_packet_buffer(); 818 hci_emit_transport_packet_sent(); 819 return 0; 820 } 821 822 if (hci_have_usb_transport()){ 823 // token used 824 hci_stack->sco_can_send_now = 0; 825 } else { 826 if (hci_stack->synchronous_flow_control_enabled){ 827 connection->num_packets_sent++; 828 } else { 829 connection->sco_tx_ready--; 830 } 831 } 832 } 833 834 hci_dump_packet( HCI_SCO_DATA_PACKET, 0, packet, size); 835 int err = hci_stack->hci_transport->send_packet(HCI_SCO_DATA_PACKET, packet, size); 836 837 if (hci_transport_synchronous()){ 838 hci_release_packet_buffer(); 839 hci_emit_transport_packet_sent(); 840 } 841 842 return err; 843 } 844 #endif 845 846 static void acl_handler(uint8_t *packet, uint16_t size){ 847 848 // get info 849 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(packet); 850 hci_connection_t *conn = hci_connection_for_handle(con_handle); 851 uint8_t acl_flags = READ_ACL_FLAGS(packet); 852 uint16_t acl_length = READ_ACL_LENGTH(packet); 853 854 // ignore non-registered handle 855 if (!conn){ 856 log_error("acl_handler called with non-registered handle %u!" , con_handle); 857 return; 858 } 859 860 // assert packet is complete 861 if ((acl_length + 4u) != size){ 862 log_error("acl_handler called with ACL packet of wrong size %d, expected %u => dropping packet", size, acl_length + 4); 863 return; 864 } 865 866 #ifdef ENABLE_CLASSIC 867 // update idle timestamp 868 hci_connection_timestamp(conn); 869 #endif 870 871 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 872 hci_stack->host_completed_packets = 1; 873 conn->num_packets_completed++; 874 #endif 875 876 // handle different packet types 877 switch (acl_flags & 0x03u) { 878 879 case 0x01: // continuation fragment 880 881 // sanity checks 882 if (conn->acl_recombination_pos == 0u) { 883 log_error( "ACL Cont Fragment but no first fragment for handle 0x%02x", con_handle); 884 return; 885 } 886 if ((conn->acl_recombination_pos + acl_length) > (4u + HCI_ACL_BUFFER_SIZE)){ 887 log_error( "ACL Cont Fragment to large: combined packet %u > buffer size %u for handle 0x%02x", 888 conn->acl_recombination_pos + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 889 conn->acl_recombination_pos = 0; 890 return; 891 } 892 893 // append fragment payload (header already stored) 894 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE + conn->acl_recombination_pos], 895 &packet[4], acl_length); 896 conn->acl_recombination_pos += acl_length; 897 898 // forward complete L2CAP packet if complete. 899 if (conn->acl_recombination_pos >= (conn->acl_recombination_length + 4u + 4u)){ // pos already incl. ACL header 900 hci_emit_acl_packet(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], conn->acl_recombination_pos); 901 // reset recombination buffer 902 conn->acl_recombination_length = 0; 903 conn->acl_recombination_pos = 0; 904 } 905 break; 906 907 case 0x02: { // first fragment 908 909 // sanity check 910 if (conn->acl_recombination_pos) { 911 log_error( "ACL First Fragment but data in buffer for handle 0x%02x, dropping stale fragments", con_handle); 912 conn->acl_recombination_pos = 0; 913 } 914 915 // peek into L2CAP packet! 916 uint16_t l2cap_length = READ_L2CAP_LENGTH( packet ); 917 918 // compare fragment size to L2CAP packet size 919 if (acl_length >= (l2cap_length + 4u)){ 920 // forward fragment as L2CAP packet 921 hci_emit_acl_packet(packet, acl_length + 4u); 922 } else { 923 924 if (acl_length > HCI_ACL_BUFFER_SIZE){ 925 log_error( "ACL First Fragment to large: fragment %u > buffer size %u for handle 0x%02x", 926 4 + acl_length, 4 + HCI_ACL_BUFFER_SIZE, con_handle); 927 return; 928 } 929 930 // store first fragment and tweak acl length for complete package 931 (void)memcpy(&conn->acl_recombination_buffer[HCI_INCOMING_PRE_BUFFER_SIZE], 932 packet, acl_length + 4u); 933 conn->acl_recombination_pos = acl_length + 4u; 934 conn->acl_recombination_length = l2cap_length; 935 little_endian_store_16(conn->acl_recombination_buffer, HCI_INCOMING_PRE_BUFFER_SIZE + 2u, l2cap_length +4u); 936 } 937 break; 938 939 } 940 default: 941 log_error( "acl_handler called with invalid packet boundary flags %u", acl_flags & 0x03); 942 return; 943 } 944 945 // execute main loop 946 hci_run(); 947 } 948 949 static void hci_shutdown_connection(hci_connection_t *conn){ 950 log_info("Connection closed: handle 0x%x, %s", conn->con_handle, bd_addr_to_str(conn->address)); 951 952 #ifdef ENABLE_CLASSIC 953 #ifdef ENABLE_SCO_OVER_HCI 954 int addr_type = conn->address_type; 955 #endif 956 #endif 957 958 btstack_run_loop_remove_timer(&conn->timeout); 959 960 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 961 btstack_memory_hci_connection_free( conn ); 962 963 // now it's gone 964 hci_emit_nr_connections_changed(); 965 966 #ifdef ENABLE_CLASSIC 967 #ifdef ENABLE_SCO_OVER_HCI 968 // update SCO 969 if (addr_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 970 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 971 } 972 #endif 973 #endif 974 } 975 976 #ifdef ENABLE_CLASSIC 977 978 static const uint16_t packet_type_sizes[] = { 979 0, HCI_ACL_2DH1_SIZE, HCI_ACL_3DH1_SIZE, HCI_ACL_DM1_SIZE, 980 HCI_ACL_DH1_SIZE, 0, 0, 0, 981 HCI_ACL_2DH3_SIZE, HCI_ACL_3DH3_SIZE, HCI_ACL_DM3_SIZE, HCI_ACL_DH3_SIZE, 982 HCI_ACL_2DH5_SIZE, HCI_ACL_3DH5_SIZE, HCI_ACL_DM5_SIZE, HCI_ACL_DH5_SIZE 983 }; 984 static const uint8_t packet_type_feature_requirement_bit[] = { 985 0, // 3 slot packets 986 1, // 5 slot packets 987 25, // EDR 2 mpbs 988 26, // EDR 3 mbps 989 39, // 3 slot EDR packts 990 40, // 5 slot EDR packet 991 }; 992 static const uint16_t packet_type_feature_packet_mask[] = { 993 0x0f00, // 3 slot packets 994 0xf000, // 5 slot packets 995 0x1102, // EDR 2 mpbs 996 0x2204, // EDR 3 mbps 997 0x0300, // 3 slot EDR packts 998 0x3000, // 5 slot EDR packet 999 }; 1000 1001 static uint16_t hci_acl_packet_types_for_buffer_size_and_local_features(uint16_t buffer_size, uint8_t * local_supported_features){ 1002 // enable packet types based on size 1003 uint16_t packet_types = 0; 1004 unsigned int i; 1005 for (i=0;i<16;i++){ 1006 if (packet_type_sizes[i] == 0) continue; 1007 if (packet_type_sizes[i] <= buffer_size){ 1008 packet_types |= 1 << i; 1009 } 1010 } 1011 // disable packet types due to missing local supported features 1012 for (i=0;i<sizeof(packet_type_feature_requirement_bit);i++){ 1013 unsigned int bit_idx = packet_type_feature_requirement_bit[i]; 1014 int feature_set = (local_supported_features[bit_idx >> 3] & (1<<(bit_idx & 7))) != 0; 1015 if (feature_set) continue; 1016 log_info("Features bit %02u is not set, removing packet types 0x%04x", bit_idx, packet_type_feature_packet_mask[i]); 1017 packet_types &= ~packet_type_feature_packet_mask[i]; 1018 } 1019 // flip bits for "may not be used" 1020 packet_types ^= 0x3306; 1021 return packet_types; 1022 } 1023 1024 uint16_t hci_usable_acl_packet_types(void){ 1025 return hci_stack->packet_types; 1026 } 1027 #endif 1028 1029 uint8_t* hci_get_outgoing_packet_buffer(void){ 1030 // hci packet buffer is >= acl data packet length 1031 return hci_stack->hci_packet_buffer; 1032 } 1033 1034 uint16_t hci_max_acl_data_packet_length(void){ 1035 return hci_stack->acl_data_packet_length; 1036 } 1037 1038 #ifdef ENABLE_CLASSIC 1039 int hci_extended_sco_link_supported(void){ 1040 // No. 31, byte 3, bit 7 1041 return (hci_stack->local_supported_features[3] & (1 << 7)) != 0; 1042 } 1043 #endif 1044 1045 int hci_non_flushable_packet_boundary_flag_supported(void){ 1046 // No. 54, byte 6, bit 6 1047 return (hci_stack->local_supported_features[6u] & (1u << 6u)) != 0u; 1048 } 1049 1050 static int gap_ssp_supported(void){ 1051 // No. 51, byte 6, bit 3 1052 return (hci_stack->local_supported_features[6u] & (1u << 3u)) != 0u; 1053 } 1054 1055 static int hci_classic_supported(void){ 1056 #ifdef ENABLE_CLASSIC 1057 // No. 37, byte 4, bit 5, = No BR/EDR Support 1058 return (hci_stack->local_supported_features[4] & (1 << 5)) == 0; 1059 #else 1060 return 0; 1061 #endif 1062 } 1063 1064 static int hci_le_supported(void){ 1065 #ifdef ENABLE_BLE 1066 // No. 37, byte 4, bit 6 = LE Supported (Controller) 1067 return (hci_stack->local_supported_features[4u] & (1u << 6u)) != 0u; 1068 #else 1069 return 0; 1070 #endif 1071 } 1072 1073 #ifdef ENABLE_BLE 1074 1075 /** 1076 * @brief Get addr type and address used for LE in Advertisements, Scan Responses, 1077 */ 1078 void gap_le_get_own_address(uint8_t * addr_type, bd_addr_t addr){ 1079 *addr_type = hci_stack->le_own_addr_type; 1080 if (hci_stack->le_own_addr_type){ 1081 (void)memcpy(addr, hci_stack->le_random_address, 6); 1082 } else { 1083 (void)memcpy(addr, hci_stack->local_bd_addr, 6); 1084 } 1085 } 1086 1087 #ifdef ENABLE_LE_CENTRAL 1088 void le_handle_advertisement_report(uint8_t *packet, uint16_t size){ 1089 1090 int offset = 3; 1091 int num_reports = packet[offset]; 1092 offset += 1; 1093 1094 int i; 1095 // log_info("HCI: handle adv report with num reports: %d", num_reports); 1096 uint8_t event[12 + LE_ADVERTISING_DATA_SIZE]; // use upper bound to avoid var size automatic var 1097 for (i=0; (i<num_reports) && (offset < size);i++){ 1098 // sanity checks on data_length: 1099 uint8_t data_length = packet[offset + 8]; 1100 if (data_length > LE_ADVERTISING_DATA_SIZE) return; 1101 if ((offset + 9u + data_length + 1u) > size) return; 1102 // setup event 1103 uint8_t event_size = 10u + data_length; 1104 int pos = 0; 1105 event[pos++] = GAP_EVENT_ADVERTISING_REPORT; 1106 event[pos++] = event_size; 1107 (void)memcpy(&event[pos], &packet[offset], 1 + 1 + 6); // event type + address type + address 1108 offset += 8; 1109 pos += 8; 1110 event[pos++] = packet[offset + 1 + data_length]; // rssi 1111 event[pos++] = data_length; 1112 offset++; 1113 (void)memcpy(&event[pos], &packet[offset], data_length); 1114 pos += data_length; 1115 offset += data_length + 1u; // rssi 1116 hci_emit_event(event, pos, 1); 1117 } 1118 } 1119 #endif 1120 #endif 1121 1122 #ifdef ENABLE_BLE 1123 #ifdef ENABLE_LE_PERIPHERAL 1124 static void hci_update_advertisements_enabled_for_current_roles(void){ 1125 if (hci_stack->le_advertisements_enabled){ 1126 // get number of active le slave connections 1127 int num_slave_connections = 0; 1128 btstack_linked_list_iterator_t it; 1129 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 1130 while (btstack_linked_list_iterator_has_next(&it)){ 1131 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 1132 log_info("state %u, role %u, le_con %u", con->state, con->role, hci_is_le_connection(con)); 1133 if (con->state != OPEN) continue; 1134 if (con->role != HCI_ROLE_SLAVE) continue; 1135 if (!hci_is_le_connection(con)) continue; 1136 num_slave_connections++; 1137 } 1138 log_info("Num LE Peripheral roles: %u of %u", num_slave_connections, hci_stack->le_max_number_peripheral_connections); 1139 hci_stack->le_advertisements_enabled_for_current_roles = num_slave_connections < hci_stack->le_max_number_peripheral_connections; 1140 } else { 1141 hci_stack->le_advertisements_enabled_for_current_roles = false; 1142 } 1143 } 1144 #endif 1145 #endif 1146 1147 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 1148 1149 static uint32_t hci_transport_uart_get_main_baud_rate(void){ 1150 if (!hci_stack->config) return 0; 1151 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1152 // Limit baud rate for Broadcom chipsets to 3 mbps 1153 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) && (baud_rate > 3000000)){ 1154 baud_rate = 3000000; 1155 } 1156 return baud_rate; 1157 } 1158 1159 static void hci_initialization_timeout_handler(btstack_timer_source_t * ds){ 1160 UNUSED(ds); 1161 1162 switch (hci_stack->substate){ 1163 case HCI_INIT_W4_SEND_RESET: 1164 log_info("Resend HCI Reset"); 1165 hci_stack->substate = HCI_INIT_SEND_RESET; 1166 hci_stack->num_cmd_packets = 1; 1167 hci_run(); 1168 break; 1169 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET: 1170 log_info("Resend HCI Reset - CSR Warm Boot with Link Reset"); 1171 if (hci_stack->hci_transport->reset_link){ 1172 hci_stack->hci_transport->reset_link(); 1173 } 1174 1175 /* fall through */ 1176 1177 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1178 log_info("Resend HCI Reset - CSR Warm Boot"); 1179 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1180 hci_stack->num_cmd_packets = 1; 1181 hci_run(); 1182 break; 1183 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1184 if (hci_stack->hci_transport->set_baudrate){ 1185 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1186 log_info("Local baud rate change to %" PRIu32 "(timeout handler)", baud_rate); 1187 hci_stack->hci_transport->set_baudrate(baud_rate); 1188 } 1189 // For CSR, HCI Reset is sent on new baud rate. Don't forget to reset link for H5/BCSP 1190 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 1191 if (hci_stack->hci_transport->reset_link){ 1192 log_info("Link Reset"); 1193 hci_stack->hci_transport->reset_link(); 1194 } 1195 hci_stack->substate = HCI_INIT_SEND_RESET_CSR_WARM_BOOT; 1196 hci_run(); 1197 } 1198 break; 1199 case HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY: 1200 // otherwise continue 1201 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1202 hci_send_cmd(&hci_read_local_supported_commands); 1203 break; 1204 default: 1205 break; 1206 } 1207 } 1208 #endif 1209 1210 static void hci_initializing_next_state(void){ 1211 hci_stack->substate = (hci_substate_t )( ((int) hci_stack->substate) + 1); 1212 } 1213 1214 // assumption: hci_can_send_command_packet_now() == true 1215 static void hci_initializing_run(void){ 1216 log_debug("hci_initializing_run: substate %u, can send %u", hci_stack->substate, hci_can_send_command_packet_now()); 1217 switch (hci_stack->substate){ 1218 case HCI_INIT_SEND_RESET: 1219 hci_state_reset(); 1220 1221 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 1222 // prepare reset if command complete not received in 100ms 1223 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1224 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1225 btstack_run_loop_add_timer(&hci_stack->timeout); 1226 #endif 1227 // send command 1228 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1229 hci_send_cmd(&hci_reset); 1230 break; 1231 case HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION: 1232 hci_send_cmd(&hci_read_local_version_information); 1233 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION; 1234 break; 1235 case HCI_INIT_SEND_READ_LOCAL_NAME: 1236 hci_send_cmd(&hci_read_local_name); 1237 hci_stack->substate = HCI_INIT_W4_SEND_READ_LOCAL_NAME; 1238 break; 1239 1240 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 1241 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1242 hci_state_reset(); 1243 // prepare reset if command complete not received in 100ms 1244 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1245 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1246 btstack_run_loop_add_timer(&hci_stack->timeout); 1247 // send command 1248 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1249 hci_send_cmd(&hci_reset); 1250 break; 1251 case HCI_INIT_SEND_RESET_ST_WARM_BOOT: 1252 hci_state_reset(); 1253 hci_stack->substate = HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT; 1254 hci_send_cmd(&hci_reset); 1255 break; 1256 case HCI_INIT_SEND_BAUD_CHANGE: { 1257 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1258 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1259 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1260 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1261 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1262 // STLC25000D: baudrate change happens within 0.5 s after command was send, 1263 // use timer to update baud rate after 100 ms (knowing exactly, when command was sent is non-trivial) 1264 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS){ 1265 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1266 btstack_run_loop_add_timer(&hci_stack->timeout); 1267 } 1268 break; 1269 } 1270 case HCI_INIT_SEND_BAUD_CHANGE_BCM: { 1271 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1272 hci_stack->chipset->set_baudrate_command(baud_rate, hci_stack->hci_packet_buffer); 1273 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1274 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE_BCM; 1275 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1276 break; 1277 } 1278 case HCI_INIT_CUSTOM_INIT: 1279 // Custom initialization 1280 if (hci_stack->chipset && hci_stack->chipset->next_command){ 1281 hci_stack->chipset_result = (*hci_stack->chipset->next_command)(hci_stack->hci_packet_buffer); 1282 bool send_cmd = false; 1283 switch (hci_stack->chipset_result){ 1284 case BTSTACK_CHIPSET_VALID_COMMAND: 1285 send_cmd = true; 1286 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT; 1287 break; 1288 case BTSTACK_CHIPSET_WARMSTART_REQUIRED: 1289 send_cmd = true; 1290 // CSR Warm Boot: Wait a bit, then send HCI Reset until HCI Command Complete 1291 log_info("CSR Warm Boot"); 1292 btstack_run_loop_set_timer(&hci_stack->timeout, HCI_RESET_RESEND_TIMEOUT_MS); 1293 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1294 btstack_run_loop_add_timer(&hci_stack->timeout); 1295 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO) 1296 && hci_stack->config 1297 && hci_stack->chipset 1298 // && hci_stack->chipset->set_baudrate_command -- there's no such command 1299 && hci_stack->hci_transport->set_baudrate 1300 && hci_transport_uart_get_main_baud_rate()){ 1301 hci_stack->substate = HCI_INIT_W4_SEND_BAUD_CHANGE; 1302 } else { 1303 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT_LINK_RESET; 1304 } 1305 break; 1306 default: 1307 break; 1308 } 1309 1310 if (send_cmd){ 1311 int size = 3u + hci_stack->hci_packet_buffer[2u]; 1312 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1313 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, hci_stack->hci_packet_buffer, size); 1314 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, hci_stack->hci_packet_buffer, size); 1315 break; 1316 } 1317 log_info("Init script done"); 1318 1319 // Init script download on Broadcom chipsets causes: 1320 if ( (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1321 ( (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) 1322 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA)) ){ 1323 1324 // - baud rate to reset, restore UART baud rate if needed 1325 int need_baud_change = hci_stack->config 1326 && hci_stack->chipset 1327 && hci_stack->chipset->set_baudrate_command 1328 && hci_stack->hci_transport->set_baudrate 1329 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1330 if (need_baud_change) { 1331 uint32_t baud_rate = ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_init; 1332 log_info("Local baud rate change to %" PRIu32 " after init script (bcm)", baud_rate); 1333 hci_stack->hci_transport->set_baudrate(baud_rate); 1334 } 1335 1336 uint16_t bcm_delay_ms = 300; 1337 // - UART may or may not be disabled during update and Controller RTS may or may not be high during this time 1338 // -> Work around: wait here. 1339 log_info("BCM delay (%u ms) after init script", bcm_delay_ms); 1340 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_BCM_DELAY; 1341 btstack_run_loop_set_timer(&hci_stack->timeout, bcm_delay_ms); 1342 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_initialization_timeout_handler); 1343 btstack_run_loop_add_timer(&hci_stack->timeout); 1344 break; 1345 } 1346 } 1347 // otherwise continue 1348 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1349 hci_send_cmd(&hci_read_local_supported_commands); 1350 break; 1351 case HCI_INIT_SET_BD_ADDR: 1352 log_info("Set Public BD ADDR to %s", bd_addr_to_str(hci_stack->custom_bd_addr)); 1353 hci_stack->chipset->set_bd_addr_command(hci_stack->custom_bd_addr, hci_stack->hci_packet_buffer); 1354 hci_stack->last_cmd_opcode = little_endian_read_16(hci_stack->hci_packet_buffer, 0); 1355 hci_stack->substate = HCI_INIT_W4_SET_BD_ADDR; 1356 hci_send_cmd_packet(hci_stack->hci_packet_buffer, 3u + hci_stack->hci_packet_buffer[2u]); 1357 break; 1358 #endif 1359 1360 case HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS: 1361 log_info("Resend hci_read_local_supported_commands after CSR Warm Boot double reset"); 1362 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS; 1363 hci_send_cmd(&hci_read_local_supported_commands); 1364 break; 1365 case HCI_INIT_READ_BD_ADDR: 1366 hci_stack->substate = HCI_INIT_W4_READ_BD_ADDR; 1367 hci_send_cmd(&hci_read_bd_addr); 1368 break; 1369 case HCI_INIT_READ_BUFFER_SIZE: 1370 hci_stack->substate = HCI_INIT_W4_READ_BUFFER_SIZE; 1371 hci_send_cmd(&hci_read_buffer_size); 1372 break; 1373 case HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES: 1374 hci_stack->substate = HCI_INIT_W4_READ_LOCAL_SUPPORTED_FEATURES; 1375 hci_send_cmd(&hci_read_local_supported_features); 1376 break; 1377 1378 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 1379 case HCI_INIT_SET_CONTROLLER_TO_HOST_FLOW_CONTROL: 1380 hci_stack->substate = HCI_INIT_W4_SET_CONTROLLER_TO_HOST_FLOW_CONTROL; 1381 hci_send_cmd(&hci_set_controller_to_host_flow_control, 3); // ACL + SCO Flow Control 1382 break; 1383 case HCI_INIT_HOST_BUFFER_SIZE: 1384 hci_stack->substate = HCI_INIT_W4_HOST_BUFFER_SIZE; 1385 hci_send_cmd(&hci_host_buffer_size, HCI_HOST_ACL_PACKET_LEN, HCI_HOST_SCO_PACKET_LEN, 1386 HCI_HOST_ACL_PACKET_NUM, HCI_HOST_SCO_PACKET_NUM); 1387 break; 1388 #endif 1389 1390 case HCI_INIT_SET_EVENT_MASK: 1391 hci_stack->substate = HCI_INIT_W4_SET_EVENT_MASK; 1392 if (hci_le_supported()){ 1393 hci_send_cmd(&hci_set_event_mask,0xffffffff, 0x3FFFFFFF); 1394 } else { 1395 // Kensington Bluetooth 2.1 USB Dongle (CSR Chipset) returns an error for 0xffff... 1396 hci_send_cmd(&hci_set_event_mask,0xffffffff, 0x1FFFFFFF); 1397 } 1398 break; 1399 1400 #ifdef ENABLE_CLASSIC 1401 case HCI_INIT_WRITE_SIMPLE_PAIRING_MODE: 1402 hci_stack->substate = HCI_INIT_W4_WRITE_SIMPLE_PAIRING_MODE; 1403 hci_send_cmd(&hci_write_simple_pairing_mode, hci_stack->ssp_enable); 1404 break; 1405 case HCI_INIT_WRITE_PAGE_TIMEOUT: 1406 hci_stack->substate = HCI_INIT_W4_WRITE_PAGE_TIMEOUT; 1407 hci_send_cmd(&hci_write_page_timeout, 0x6000); // ca. 15 sec 1408 break; 1409 case HCI_INIT_WRITE_DEFAULT_LINK_POLICY_SETTING: 1410 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_LINK_POLICY_SETTING; 1411 hci_send_cmd(&hci_write_default_link_policy_setting, hci_stack->default_link_policy_settings); 1412 break; 1413 case HCI_INIT_WRITE_CLASS_OF_DEVICE: 1414 hci_stack->substate = HCI_INIT_W4_WRITE_CLASS_OF_DEVICE; 1415 hci_send_cmd(&hci_write_class_of_device, hci_stack->class_of_device); 1416 break; 1417 case HCI_INIT_WRITE_LOCAL_NAME: { 1418 hci_stack->substate = HCI_INIT_W4_WRITE_LOCAL_NAME; 1419 hci_reserve_packet_buffer(); 1420 uint8_t * packet = hci_stack->hci_packet_buffer; 1421 // construct HCI Command and send 1422 uint16_t opcode = hci_write_local_name.opcode; 1423 hci_stack->last_cmd_opcode = opcode; 1424 packet[0] = opcode & 0xff; 1425 packet[1] = opcode >> 8; 1426 packet[2] = DEVICE_NAME_LEN; 1427 memset(&packet[3], 0, DEVICE_NAME_LEN); 1428 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1429 uint16_t bytes_to_copy = btstack_min(name_len, DEVICE_NAME_LEN); 1430 // if shorter than DEVICE_NAME_LEN, it's implicitly NULL-terminated by memset call 1431 (void)memcpy(&packet[3], hci_stack->local_name, bytes_to_copy); 1432 // expand '00:00:00:00:00:00' in name with bd_addr 1433 btstack_replace_bd_addr_placeholder(&packet[3], bytes_to_copy, hci_stack->local_bd_addr); 1434 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + DEVICE_NAME_LEN); 1435 break; 1436 } 1437 case HCI_INIT_WRITE_EIR_DATA: { 1438 hci_stack->substate = HCI_INIT_W4_WRITE_EIR_DATA; 1439 hci_reserve_packet_buffer(); 1440 uint8_t * packet = hci_stack->hci_packet_buffer; 1441 // construct HCI Command in-place and send 1442 uint16_t opcode = hci_write_extended_inquiry_response.opcode; 1443 hci_stack->last_cmd_opcode = opcode; 1444 uint16_t offset = 0; 1445 packet[offset++] = opcode & 0xff; 1446 packet[offset++] = opcode >> 8; 1447 packet[offset++] = 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN; 1448 packet[offset++] = 0; // FEC not required 1449 memset(&packet[offset], 0, EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1450 if (hci_stack->eir_data){ 1451 // copy items and expand '00:00:00:00:00:00' in name with bd_addr 1452 ad_context_t context; 1453 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, hci_stack->eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)) { 1454 uint8_t data_type = ad_iterator_get_data_type(&context); 1455 uint8_t size = ad_iterator_get_data_len(&context); 1456 const uint8_t *data = ad_iterator_get_data(&context); 1457 // copy item 1458 packet[offset++] = size + 1; 1459 packet[offset++] = data_type; 1460 memcpy(&packet[offset], data, size); 1461 // update name item 1462 if ((data_type == BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME) || (data_type == BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME)){ 1463 btstack_replace_bd_addr_placeholder(&packet[offset], size, hci_stack->local_bd_addr); 1464 } 1465 offset += size; 1466 } 1467 } else { 1468 uint16_t name_len = (uint16_t) strlen(hci_stack->local_name); 1469 uint16_t bytes_to_copy = btstack_min(name_len, EXTENDED_INQUIRY_RESPONSE_DATA_LEN - 2); 1470 packet[offset++] = bytes_to_copy + 1; 1471 packet[offset++] = BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME; 1472 (void)memcpy(&packet[6], hci_stack->local_name, bytes_to_copy); 1473 // expand '00:00:00:00:00:00' in name with bd_addr 1474 btstack_replace_bd_addr_placeholder(&packet[offset], bytes_to_copy, hci_stack->local_bd_addr); 1475 } 1476 hci_send_cmd_packet(packet, HCI_CMD_HEADER_SIZE + 1 + EXTENDED_INQUIRY_RESPONSE_DATA_LEN); 1477 break; 1478 } 1479 case HCI_INIT_WRITE_INQUIRY_MODE: 1480 hci_stack->substate = HCI_INIT_W4_WRITE_INQUIRY_MODE; 1481 hci_send_cmd(&hci_write_inquiry_mode, (int) hci_stack->inquiry_mode); 1482 break; 1483 case HCI_INIT_WRITE_SECURE_CONNECTIONS_HOST_ENABLE: 1484 hci_send_cmd(&hci_write_secure_connections_host_support, 1); 1485 hci_stack->secure_connections_active = true; 1486 hci_stack->substate = HCI_INIT_W4_WRITE_SECURE_CONNECTIONS_HOST_ENABLE; 1487 break; 1488 case HCI_INIT_WRITE_SCAN_ENABLE: 1489 hci_send_cmd(&hci_write_scan_enable, (hci_stack->connectable << 1) | hci_stack->discoverable); // page scan 1490 hci_stack->substate = HCI_INIT_W4_WRITE_SCAN_ENABLE; 1491 break; 1492 // only sent if ENABLE_SCO_OVER_HCI is defined 1493 case HCI_INIT_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1494 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1495 hci_send_cmd(&hci_write_synchronous_flow_control_enable, 1); // SCO tracking enabled 1496 break; 1497 case HCI_INIT_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1498 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1499 hci_send_cmd(&hci_write_default_erroneous_data_reporting, 1); 1500 break; 1501 // only sent if manufacturer is Broadcom and ENABLE_SCO_OVER_HCI or ENABLE_SCO_OVER_PCM is defined 1502 case HCI_INIT_BCM_WRITE_SCO_PCM_INT: 1503 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1504 #ifdef ENABLE_SCO_OVER_HCI 1505 log_info("BCM: Route SCO data via HCI transport"); 1506 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 1, 0, 0, 0, 0); 1507 #endif 1508 #ifdef ENABLE_SCO_OVER_PCM 1509 log_info("BCM: Route SCO data via PCM interface"); 1510 #ifdef ENABLE_BCM_PCM_WBS 1511 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 1512 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 2, 0, 1, 1); 1513 #else 1514 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1515 hci_send_cmd(&hci_bcm_write_sco_pcm_int, 0, 1, 0, 1, 1); 1516 #endif 1517 #endif 1518 break; 1519 #ifdef ENABLE_SCO_OVER_PCM 1520 case HCI_INIT_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 1521 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM; 1522 log_info("BCM: Config PCM interface for I2S"); 1523 #ifdef ENABLE_BCM_PCM_WBS 1524 // 512 kHz bit clock for 2 channels x 16 bit x 8 kHz 1525 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 2); 1526 #else 1527 // 256 kHz bit clock for 2 channels x 16 bit x 8 kHz 1528 hci_send_cmd(&hci_bcm_write_i2spcm_interface_param, 1, 1, 0, 1); 1529 #endif 1530 break; 1531 #endif 1532 #endif 1533 1534 #ifdef ENABLE_BLE 1535 // LE INIT 1536 case HCI_INIT_LE_READ_BUFFER_SIZE: 1537 hci_stack->substate = HCI_INIT_W4_LE_READ_BUFFER_SIZE; 1538 hci_send_cmd(&hci_le_read_buffer_size); 1539 break; 1540 case HCI_INIT_LE_SET_EVENT_MASK: 1541 hci_stack->substate = HCI_INIT_W4_LE_SET_EVENT_MASK; 1542 hci_send_cmd(&hci_le_set_event_mask, 0x809FF, 0x0); // bits 0-8, 11, 19 1543 break; 1544 case HCI_INIT_WRITE_LE_HOST_SUPPORTED: 1545 // LE Supported Host = 1, Simultaneous Host = 0 1546 hci_stack->substate = HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED; 1547 hci_send_cmd(&hci_write_le_host_supported, 1, 0); 1548 break; 1549 #endif 1550 1551 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 1552 case HCI_INIT_LE_READ_MAX_DATA_LENGTH: 1553 hci_stack->substate = HCI_INIT_W4_LE_READ_MAX_DATA_LENGTH; 1554 hci_send_cmd(&hci_le_read_maximum_data_length); 1555 break; 1556 case HCI_INIT_LE_WRITE_SUGGESTED_DATA_LENGTH: 1557 hci_stack->substate = HCI_INIT_W4_LE_WRITE_SUGGESTED_DATA_LENGTH; 1558 hci_send_cmd(&hci_le_write_suggested_default_data_length, hci_stack->le_supported_max_tx_octets, hci_stack->le_supported_max_tx_time); 1559 break; 1560 #endif 1561 1562 #ifdef ENABLE_LE_CENTRAL 1563 case HCI_INIT_READ_WHITE_LIST_SIZE: 1564 hci_stack->substate = HCI_INIT_W4_READ_WHITE_LIST_SIZE; 1565 hci_send_cmd(&hci_le_read_white_list_size); 1566 break; 1567 case HCI_INIT_LE_SET_SCAN_PARAMETERS: 1568 hci_stack->substate = HCI_INIT_W4_LE_SET_SCAN_PARAMETERS; 1569 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 1570 break; 1571 #endif 1572 default: 1573 return; 1574 } 1575 } 1576 1577 static void hci_init_done(void){ 1578 // done. tell the app 1579 log_info("hci_init_done -> HCI_STATE_WORKING"); 1580 hci_stack->state = HCI_STATE_WORKING; 1581 hci_emit_state(); 1582 hci_run(); 1583 } 1584 1585 static bool hci_initializing_event_handler_command_completed(const uint8_t * packet){ 1586 bool command_completed = false; 1587 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE){ 1588 uint16_t opcode = little_endian_read_16(packet,3); 1589 if (opcode == hci_stack->last_cmd_opcode){ 1590 command_completed = true; 1591 log_debug("Command complete for expected opcode %04x at substate %u", opcode, hci_stack->substate); 1592 } else { 1593 log_info("Command complete for different opcode %04x, expected %04x, at substate %u", opcode, hci_stack->last_cmd_opcode, hci_stack->substate); 1594 } 1595 } 1596 1597 if (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_STATUS){ 1598 uint8_t status = packet[2]; 1599 uint16_t opcode = little_endian_read_16(packet,4); 1600 if (opcode == hci_stack->last_cmd_opcode){ 1601 if (status){ 1602 command_completed = true; 1603 log_debug("Command status error 0x%02x for expected opcode %04x at substate %u", status, opcode, hci_stack->substate); 1604 } else { 1605 log_info("Command status OK for expected opcode %04x, waiting for command complete", opcode); 1606 } 1607 } else { 1608 log_debug("Command status for opcode %04x, expected %04x", opcode, hci_stack->last_cmd_opcode); 1609 } 1610 } 1611 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 1612 // Vendor == CSR 1613 if ((hci_stack->substate == HCI_INIT_W4_CUSTOM_INIT) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 1614 // TODO: track actual command 1615 command_completed = true; 1616 } 1617 1618 // Vendor == Toshiba 1619 if ((hci_stack->substate == HCI_INIT_W4_SEND_BAUD_CHANGE) && (hci_event_packet_get_type(packet) == HCI_EVENT_VENDOR_SPECIFIC)){ 1620 // TODO: track actual command 1621 command_completed = true; 1622 // Fix: no HCI Command Complete received, so num_cmd_packets not reset 1623 hci_stack->num_cmd_packets = 1; 1624 } 1625 #endif 1626 1627 return command_completed; 1628 } 1629 1630 static void hci_initializing_event_handler(const uint8_t * packet, uint16_t size){ 1631 1632 UNUSED(size); // ok: less than 6 bytes are read from our buffer 1633 1634 bool command_completed = hci_initializing_event_handler_command_completed(packet); 1635 1636 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 1637 1638 // Late response (> 100 ms) for HCI Reset e.g. on Toshiba TC35661: 1639 // Command complete for HCI Reset arrives after we've resent the HCI Reset command 1640 // 1641 // HCI Reset 1642 // Timeout 100 ms 1643 // HCI Reset 1644 // Command Complete Reset 1645 // HCI Read Local Version Information 1646 // Command Complete Reset - but we expected Command Complete Read Local Version Information 1647 // hang... 1648 // 1649 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 1650 if (!command_completed 1651 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 1652 && (hci_stack->substate == HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION)){ 1653 1654 uint16_t opcode = little_endian_read_16(packet,3); 1655 if (opcode == hci_reset.opcode){ 1656 hci_stack->substate = HCI_INIT_SEND_READ_LOCAL_VERSION_INFORMATION; 1657 return; 1658 } 1659 } 1660 1661 // CSR & H5 1662 // Fix: Command Complete for HCI Reset in HCI_INIT_W4_SEND_READ_LOCAL_VERSION_INFORMATION trigger resend 1663 if (!command_completed 1664 && (hci_event_packet_get_type(packet) == HCI_EVENT_COMMAND_COMPLETE) 1665 && (hci_stack->substate == HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS)){ 1666 1667 uint16_t opcode = little_endian_read_16(packet,3); 1668 if (opcode == hci_reset.opcode){ 1669 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 1670 return; 1671 } 1672 } 1673 1674 // on CSR with BCSP/H5, the reset resend timeout leads to substate == HCI_INIT_SEND_RESET or HCI_INIT_SEND_RESET_CSR_WARM_BOOT 1675 // fix: Correct substate and behave as command below 1676 if (command_completed){ 1677 switch (hci_stack->substate){ 1678 case HCI_INIT_SEND_RESET: 1679 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1680 break; 1681 case HCI_INIT_SEND_RESET_CSR_WARM_BOOT: 1682 hci_stack->substate = HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT; 1683 break; 1684 default: 1685 break; 1686 } 1687 } 1688 1689 #endif 1690 1691 if (!command_completed) return; 1692 1693 bool need_baud_change = false; 1694 bool need_addr_change = false; 1695 1696 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 1697 need_baud_change = hci_stack->config 1698 && hci_stack->chipset 1699 && hci_stack->chipset->set_baudrate_command 1700 && hci_stack->hci_transport->set_baudrate 1701 && ((hci_transport_config_uart_t *)hci_stack->config)->baudrate_main; 1702 1703 need_addr_change = hci_stack->custom_bd_addr_set 1704 && hci_stack->chipset 1705 && hci_stack->chipset->set_bd_addr_command; 1706 #endif 1707 1708 switch(hci_stack->substate){ 1709 1710 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 1711 case HCI_INIT_SEND_RESET: 1712 // on CSR with BCSP/H5, resend triggers resend of HCI Reset and leads to substate == HCI_INIT_SEND_RESET 1713 // fix: just correct substate and behave as command below 1714 hci_stack->substate = HCI_INIT_W4_SEND_RESET; 1715 btstack_run_loop_remove_timer(&hci_stack->timeout); 1716 break; 1717 case HCI_INIT_W4_SEND_RESET: 1718 btstack_run_loop_remove_timer(&hci_stack->timeout); 1719 break; 1720 case HCI_INIT_W4_SEND_READ_LOCAL_NAME: 1721 log_info("Received local name, need baud change %d", (int) need_baud_change); 1722 if (need_baud_change){ 1723 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE; 1724 return; 1725 } 1726 // skip baud change 1727 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1728 return; 1729 case HCI_INIT_W4_SEND_BAUD_CHANGE: 1730 // for STLC2500D, baud rate change already happened. 1731 // for others, baud rate gets changed now 1732 if ((hci_stack->manufacturer != BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) && need_baud_change){ 1733 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1734 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change)", baud_rate); 1735 hci_stack->hci_transport->set_baudrate(baud_rate); 1736 } 1737 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1738 return; 1739 case HCI_INIT_W4_CUSTOM_INIT_CSR_WARM_BOOT: 1740 btstack_run_loop_remove_timer(&hci_stack->timeout); 1741 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1742 return; 1743 case HCI_INIT_W4_CUSTOM_INIT: 1744 // repeat custom init 1745 hci_stack->substate = HCI_INIT_CUSTOM_INIT; 1746 return; 1747 #else 1748 case HCI_INIT_W4_SEND_RESET: 1749 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_COMMANDS; 1750 return ; 1751 #endif 1752 1753 case HCI_INIT_W4_READ_LOCAL_SUPPORTED_COMMANDS: 1754 if (need_baud_change && (hci_stack->chipset_result != BTSTACK_CHIPSET_NO_INIT_SCRIPT) && 1755 ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) || 1756 (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_EM_MICROELECTRONIC_MARIN_SA))) { 1757 hci_stack->substate = HCI_INIT_SEND_BAUD_CHANGE_BCM; 1758 return; 1759 } 1760 if (need_addr_change){ 1761 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 1762 return; 1763 } 1764 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 1765 return; 1766 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 1767 case HCI_INIT_W4_SEND_BAUD_CHANGE_BCM: 1768 if (need_baud_change){ 1769 uint32_t baud_rate = hci_transport_uart_get_main_baud_rate(); 1770 log_info("Local baud rate change to %" PRIu32 "(w4_send_baud_change_bcm))", baud_rate); 1771 hci_stack->hci_transport->set_baudrate(baud_rate); 1772 } 1773 if (need_addr_change){ 1774 hci_stack->substate = HCI_INIT_SET_BD_ADDR; 1775 return; 1776 } 1777 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 1778 return; 1779 case HCI_INIT_W4_SET_BD_ADDR: 1780 // for STLC2500D + ATWILC3000, bd addr change only gets active after sending reset command 1781 if ((hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ST_MICROELECTRONICS) 1782 || (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_ATMEL_CORPORATION)){ 1783 hci_stack->substate = HCI_INIT_SEND_RESET_ST_WARM_BOOT; 1784 return; 1785 } 1786 // skipping st warm boot 1787 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 1788 return; 1789 case HCI_INIT_W4_SEND_RESET_ST_WARM_BOOT: 1790 hci_stack->substate = HCI_INIT_READ_BD_ADDR; 1791 return; 1792 #endif 1793 case HCI_INIT_W4_READ_BD_ADDR: 1794 // only read buffer size if supported 1795 if (hci_stack->local_supported_commands[0u] & 0x01u) { 1796 hci_stack->substate = HCI_INIT_READ_BUFFER_SIZE; 1797 return; 1798 } 1799 // skipping read buffer size 1800 hci_stack->substate = HCI_INIT_READ_LOCAL_SUPPORTED_FEATURES; 1801 return; 1802 case HCI_INIT_W4_SET_EVENT_MASK: 1803 // skip Classic init commands for LE only chipsets 1804 if (!hci_classic_supported()){ 1805 #ifdef ENABLE_BLE 1806 if (hci_le_supported()){ 1807 hci_stack->substate = HCI_INIT_LE_READ_BUFFER_SIZE; // skip all classic command 1808 return; 1809 } 1810 #endif 1811 log_error("Neither BR/EDR nor LE supported"); 1812 hci_init_done(); 1813 return; 1814 } 1815 if (!gap_ssp_supported()){ 1816 hci_stack->substate = HCI_INIT_WRITE_PAGE_TIMEOUT; 1817 return; 1818 } 1819 break; 1820 #ifdef ENABLE_BLE 1821 case HCI_INIT_W4_LE_READ_BUFFER_SIZE: 1822 // skip write le host if not supported (e.g. on LE only EM9301) 1823 if (hci_stack->local_supported_commands[0u] & 0x02u) break; 1824 hci_stack->substate = HCI_INIT_LE_SET_EVENT_MASK; 1825 return; 1826 1827 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 1828 case HCI_INIT_W4_WRITE_LE_HOST_SUPPORTED: 1829 log_info("Supported commands %x", hci_stack->local_supported_commands[0] & 0x30); 1830 if ((hci_stack->local_supported_commands[0u] & 0x30u) == 0x30u){ 1831 hci_stack->substate = HCI_INIT_LE_SET_EVENT_MASK; 1832 return; 1833 } 1834 // explicit fall through to reduce repetitions 1835 1836 #ifdef ENABLE_LE_CENTRAL 1837 hci_stack->substate = HCI_INIT_READ_WHITE_LIST_SIZE; 1838 #else 1839 hci_init_done(); 1840 #endif 1841 return; 1842 #endif /* ENABLE_LE_DATA_LENGTH_EXTENSION */ 1843 1844 #endif /* ENABLE_BLE */ 1845 1846 case HCI_INIT_W4_WRITE_INQUIRY_MODE: 1847 // skip write secure connections host support if not supported or disabled 1848 if (!hci_stack->secure_connections_enable || (hci_stack->local_supported_commands[1u] & 0x02u) == 0u) { 1849 hci_stack->substate = HCI_INIT_WRITE_SCAN_ENABLE; 1850 return; 1851 } 1852 break; 1853 1854 #ifdef ENABLE_SCO_OVER_HCI 1855 case HCI_INIT_W4_WRITE_SCAN_ENABLE: 1856 // skip write synchronous flow control if not supported 1857 if (hci_stack->local_supported_commands[0] & 0x04) break; 1858 hci_stack->substate = HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE; 1859 1860 /* fall through */ 1861 1862 case HCI_INIT_W4_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 1863 // skip write default erroneous data reporting if not supported 1864 if (hci_stack->local_supported_commands[0] & 0x08) break; 1865 hci_stack->substate = HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING; 1866 1867 /* fall through */ 1868 1869 case HCI_INIT_W4_WRITE_DEFAULT_ERRONEOUS_DATA_REPORTING: 1870 // skip bcm set sco pcm config on non-Broadcom chipsets 1871 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) break; 1872 hci_stack->substate = HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT; 1873 1874 /* fall through */ 1875 1876 case HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT: 1877 if (!hci_le_supported()){ 1878 // SKIP LE init for Classic only configuration 1879 hci_init_done(); 1880 return; 1881 } 1882 break; 1883 1884 #else /* !ENABLE_SCO_OVER_HCI */ 1885 1886 case HCI_INIT_W4_WRITE_SCAN_ENABLE: 1887 #ifdef ENABLE_SCO_OVER_PCM 1888 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION) { 1889 hci_stack->substate = HCI_INIT_BCM_WRITE_SCO_PCM_INT; 1890 return; 1891 } 1892 #endif 1893 /* fall through */ 1894 1895 case HCI_INIT_W4_BCM_WRITE_I2SPCM_INTERFACE_PARAM: 1896 #ifdef ENABLE_BLE 1897 if (hci_le_supported()){ 1898 hci_stack->substate = HCI_INIT_LE_READ_BUFFER_SIZE; 1899 return; 1900 } 1901 #endif 1902 // SKIP LE init for Classic only configuration 1903 hci_init_done(); 1904 return; 1905 #endif /* ENABLE_SCO_OVER_HCI */ 1906 1907 // avoid compile error due to duplicate cases: HCI_INIT_W4_BCM_WRITE_SCO_PCM_INT == HCI_INIT_DONE-1 1908 #if defined(ENABLE_BLE) || defined(ENABLE_LE_DATA_LENGTH_EXTENSION) || defined(ENABLE_LE_CENTRAL) 1909 // Response to command before init done state -> init done 1910 case (HCI_INIT_DONE-1): 1911 hci_init_done(); 1912 return; 1913 #endif 1914 1915 default: 1916 break; 1917 } 1918 hci_initializing_next_state(); 1919 } 1920 1921 static void hci_handle_connection_failed(hci_connection_t * conn, uint8_t status){ 1922 log_info("Outgoing connection to %s failed", bd_addr_to_str(conn->address)); 1923 bd_addr_t bd_address; 1924 (void)memcpy(&bd_address, conn->address, 6); 1925 1926 #ifdef ENABLE_CLASSIC 1927 // cache needed data 1928 int notify_dedicated_bonding_failed = conn->bonding_flags & BONDING_DEDICATED; 1929 #endif 1930 1931 // connection failed, remove entry 1932 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 1933 btstack_memory_hci_connection_free( conn ); 1934 1935 #ifdef ENABLE_CLASSIC 1936 // notify client if dedicated bonding 1937 if (notify_dedicated_bonding_failed){ 1938 log_info("hci notify_dedicated_bonding_failed"); 1939 hci_emit_dedicated_bonding_result(bd_address, status); 1940 } 1941 1942 // if authentication error, also delete link key 1943 if (status == ERROR_CODE_AUTHENTICATION_FAILURE) { 1944 gap_drop_link_key_for_bd_addr(bd_address); 1945 } 1946 #else 1947 UNUSED(status); 1948 #endif 1949 } 1950 1951 #ifdef ENABLE_CLASSIC 1952 static void hci_handle_remote_features_page_0(hci_connection_t * conn, const uint8_t * features){ 1953 // SSP Controller 1954 if (features[6] & (1 << 3)){ 1955 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER; 1956 } 1957 // eSCO 1958 if (features[3] & (1<<7)){ 1959 conn->remote_supported_features[0] |= 1; 1960 } 1961 // Extended features 1962 if (features[7] & (1<<7)){ 1963 conn->remote_supported_features[0] |= 2; 1964 } 1965 } 1966 1967 static void hci_handle_remote_features_page_1(hci_connection_t * conn, const uint8_t * features){ 1968 // SSP Host 1969 if (features[0] & (1 << 0)){ 1970 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SSP_HOST; 1971 } 1972 // SC Host 1973 if (features[0] & (1 << 3)){ 1974 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_HOST; 1975 } 1976 } 1977 1978 static void hci_handle_remote_features_page_2(hci_connection_t * conn, const uint8_t * features){ 1979 // SC Controller 1980 if (features[1] & (1 << 0)){ 1981 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 1982 } 1983 } 1984 1985 static void hci_handle_remote_features_received(hci_connection_t * conn){ 1986 conn->bonding_flags |= BONDING_RECEIVED_REMOTE_FEATURES; 1987 log_info("Remote features %02x, bonding flags %x", conn->remote_supported_features[0], conn->bonding_flags); 1988 if (conn->bonding_flags & BONDING_DEDICATED){ 1989 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 1990 } 1991 } 1992 #endif 1993 1994 static void handle_event_for_current_stack_state(const uint8_t * packet, uint16_t size) { 1995 // handle BT initialization 1996 if (hci_stack->state == HCI_STATE_INITIALIZING) { 1997 hci_initializing_event_handler(packet, size); 1998 } 1999 2000 // help with BT sleep 2001 if ((hci_stack->state == HCI_STATE_FALLING_ASLEEP) 2002 && (hci_stack->substate == HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE) 2003 && HCI_EVENT_IS_COMMAND_COMPLETE(packet, hci_write_scan_enable)) { 2004 hci_initializing_next_state(); 2005 } 2006 } 2007 2008 #ifdef ENABLE_CLASSIC 2009 static void hci_handle_read_encryption_key_size_complete(hci_connection_t * conn, uint8_t encryption_key_size) { 2010 conn->authentication_flags |= CONNECTION_ENCRYPTED; 2011 conn->encryption_key_size = encryption_key_size; 2012 2013 if ((conn->authentication_flags & CONNECTION_AUTHENTICATED) != 0) { 2014 hci_emit_security_level(conn->con_handle, gap_security_level_for_connection(conn)); 2015 return; 2016 } 2017 2018 // Request Authentication if not already done 2019 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 2020 conn->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 2021 } 2022 #endif 2023 2024 static void handle_command_complete_event(uint8_t * packet, uint16_t size){ 2025 UNUSED(size); 2026 2027 uint16_t manufacturer; 2028 #ifdef ENABLE_CLASSIC 2029 hci_con_handle_t handle; 2030 hci_connection_t * conn; 2031 uint8_t status; 2032 #endif 2033 // get num cmd packets - limit to 1 to reduce complexity 2034 hci_stack->num_cmd_packets = packet[2] ? 1 : 0; 2035 2036 uint16_t opcode = hci_event_command_complete_get_command_opcode(packet); 2037 switch (opcode){ 2038 case HCI_OPCODE_HCI_READ_LOCAL_NAME: 2039 if (packet[5]) break; 2040 // terminate, name 248 chars 2041 packet[6+248] = 0; 2042 log_info("local name: %s", &packet[6]); 2043 break; 2044 case HCI_OPCODE_HCI_READ_BUFFER_SIZE: 2045 // "The HC_ACL_Data_Packet_Length return parameter will be used to determine the size of the L2CAP segments contained in ACL Data Packets" 2046 if (hci_stack->state == HCI_STATE_INITIALIZING) { 2047 uint16_t acl_len = little_endian_read_16(packet, 6); 2048 uint16_t sco_len = packet[8]; 2049 2050 // determine usable ACL/SCO payload size 2051 hci_stack->acl_data_packet_length = btstack_min(acl_len, HCI_ACL_PAYLOAD_SIZE); 2052 hci_stack->sco_data_packet_length = btstack_min(sco_len, HCI_ACL_PAYLOAD_SIZE); 2053 2054 hci_stack->acl_packets_total_num = little_endian_read_16(packet, 9); 2055 hci_stack->sco_packets_total_num = little_endian_read_16(packet, 11); 2056 2057 log_info("hci_read_buffer_size: ACL size module %u -> used %u, count %u / SCO size %u, count %u", 2058 acl_len, hci_stack->acl_data_packet_length, hci_stack->acl_packets_total_num, 2059 hci_stack->sco_data_packet_length, hci_stack->sco_packets_total_num); 2060 } 2061 break; 2062 case HCI_OPCODE_HCI_READ_RSSI: 2063 if (packet[5] == ERROR_CODE_SUCCESS){ 2064 uint8_t event[5]; 2065 event[0] = GAP_EVENT_RSSI_MEASUREMENT; 2066 event[1] = 3; 2067 (void)memcpy(&event[2], &packet[6], 3); 2068 hci_emit_event(event, sizeof(event), 1); 2069 } 2070 break; 2071 #ifdef ENABLE_BLE 2072 case HCI_OPCODE_HCI_LE_READ_BUFFER_SIZE: 2073 hci_stack->le_data_packets_length = little_endian_read_16(packet, 6); 2074 hci_stack->le_acl_packets_total_num = packet[8]; 2075 // determine usable ACL payload size 2076 if (HCI_ACL_PAYLOAD_SIZE < hci_stack->le_data_packets_length){ 2077 hci_stack->le_data_packets_length = HCI_ACL_PAYLOAD_SIZE; 2078 } 2079 log_info("hci_le_read_buffer_size: size %u, count %u", hci_stack->le_data_packets_length, hci_stack->le_acl_packets_total_num); 2080 break; 2081 #endif 2082 #ifdef ENABLE_LE_DATA_LENGTH_EXTENSION 2083 case HCI_OPCODE_HCI_LE_READ_MAXIMUM_DATA_LENGTH: 2084 hci_stack->le_supported_max_tx_octets = little_endian_read_16(packet, 6); 2085 hci_stack->le_supported_max_tx_time = little_endian_read_16(packet, 8); 2086 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); 2087 break; 2088 #endif 2089 #ifdef ENABLE_LE_CENTRAL 2090 case HCI_OPCODE_HCI_LE_READ_WHITE_LIST_SIZE: 2091 hci_stack->le_whitelist_capacity = packet[6]; 2092 log_info("hci_le_read_white_list_size: size %u", hci_stack->le_whitelist_capacity); 2093 break; 2094 #endif 2095 case HCI_OPCODE_HCI_READ_BD_ADDR: 2096 reverse_bd_addr(&packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], hci_stack->local_bd_addr); 2097 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)); 2098 #ifdef ENABLE_CLASSIC 2099 if (hci_stack->link_key_db){ 2100 hci_stack->link_key_db->set_local_bd_addr(hci_stack->local_bd_addr); 2101 } 2102 #endif 2103 break; 2104 #ifdef ENABLE_CLASSIC 2105 case HCI_OPCODE_HCI_WRITE_SCAN_ENABLE: 2106 hci_emit_discoverable_enabled(hci_stack->discoverable); 2107 break; 2108 case HCI_OPCODE_HCI_INQUIRY_CANCEL: 2109 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W4_CANCELLED){ 2110 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2111 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2112 hci_emit_event(event, sizeof(event), 1); 2113 } 2114 break; 2115 #endif 2116 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_FEATURES: 2117 (void)memcpy(hci_stack->local_supported_features, &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE + 1], 8); 2118 2119 #ifdef ENABLE_CLASSIC 2120 // determine usable ACL packet types based on host buffer size and supported features 2121 hci_stack->packet_types = hci_acl_packet_types_for_buffer_size_and_local_features(HCI_ACL_PAYLOAD_SIZE, &hci_stack->local_supported_features[0]); 2122 log_info("Packet types %04x, eSCO %u", hci_stack->packet_types, hci_extended_sco_link_supported()); 2123 #endif 2124 // Classic/LE 2125 log_info("BR/EDR support %u, LE support %u", hci_classic_supported(), hci_le_supported()); 2126 break; 2127 case HCI_OPCODE_HCI_READ_LOCAL_VERSION_INFORMATION: 2128 manufacturer = little_endian_read_16(packet, 10); 2129 // map Cypress to Broadcom 2130 if (manufacturer == BLUETOOTH_COMPANY_ID_CYPRESS_SEMICONDUCTOR){ 2131 log_info("Treat Cypress as Broadcom"); 2132 manufacturer = BLUETOOTH_COMPANY_ID_BROADCOM_CORPORATION; 2133 little_endian_store_16(packet, 10, manufacturer); 2134 } 2135 hci_stack->manufacturer = manufacturer; 2136 log_info("Manufacturer: 0x%04x", hci_stack->manufacturer); 2137 break; 2138 case HCI_OPCODE_HCI_READ_LOCAL_SUPPORTED_COMMANDS: 2139 hci_stack->local_supported_commands[0] = 2140 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+14u] & 0x80u) >> 7u) | // bit 0 = Octet 14, bit 7 / Read Buffer Size 2141 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+24u] & 0x40u) >> 5u) | // bit 1 = Octet 24, bit 6 / Write Le Host Supported 2142 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+10u] & 0x10u) >> 2u) | // bit 2 = Octet 10, bit 4 / Write Synchronous Flow Control Enable 2143 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+18u] & 0x08u) ) | // bit 3 = Octet 18, bit 3 / Write Default Erroneous Data Reporting 2144 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+34u] & 0x01u) << 4u) | // bit 4 = Octet 34, bit 0 / LE Write Suggested Default Data Length 2145 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+35u] & 0x08u) << 2u) | // bit 5 = Octet 35, bit 3 / LE Read Maximum Data Length 2146 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+35u] & 0x20u) << 1u) | // bit 6 = Octet 35, bit 5 / LE Set Default PHY 2147 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+20u] & 0x10u) << 3u); // bit 7 = Octet 20, bit 4 / Read Encryption Key Size 2148 hci_stack->local_supported_commands[1] = 2149 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+ 2u] & 0x40u) >> 6u) | // bit 8 = Octet 2, bit 6 / Read Remote Extended Features 2150 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+32u] & 0x08u) >> 2u) | // bit 9 = Octet 32, bit 3 / Write Secure Connections Host 2151 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+35u] & 0x02u) << 1u) | // bit 10 = Octet 35, bit 1 / LE Set Address Resolution Enable 2152 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+32u] & 0x02u) << 2u) | // bit 11 = Octet 32, bit 1 / Remote OOB Extended Data Request Reply 2153 ((packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1u+32u] & 0x40u) >> 2u); // bit 12 = Octet 32, bit 6 / Read Local OOB Extended Data command 2154 log_info("Local supported commands summary %02x - %02x", hci_stack->local_supported_commands[0], hci_stack->local_supported_commands[1]); 2155 break; 2156 #ifdef ENABLE_CLASSIC 2157 case HCI_OPCODE_HCI_WRITE_SYNCHRONOUS_FLOW_CONTROL_ENABLE: 2158 if (packet[5]) return; 2159 hci_stack->synchronous_flow_control_enabled = 1; 2160 break; 2161 case HCI_OPCODE_HCI_READ_ENCRYPTION_KEY_SIZE: 2162 status = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE]; 2163 handle = little_endian_read_16(packet, OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1); 2164 conn = hci_connection_for_handle(handle); 2165 if (conn != NULL) { 2166 uint8_t key_size = 0; 2167 if (status == 0){ 2168 key_size = packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+3]; 2169 log_info("Handle %04x key Size: %u", handle, key_size); 2170 } else { 2171 log_info("Read Encryption Key Size failed 0x%02x-> assuming insecure connection with key size of 1", status); 2172 } 2173 hci_handle_read_encryption_key_size_complete(conn, key_size); 2174 } 2175 break; 2176 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2177 case HCI_OPCODE_HCI_READ_LOCAL_OOB_DATA: 2178 case HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA:{ 2179 uint8_t event[67]; 2180 event[0] = GAP_EVENT_LOCAL_OOB_DATA; 2181 event[1] = 65; 2182 (void)memset(&event[2], 0, 65); 2183 if (packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE] == ERROR_CODE_SUCCESS){ 2184 (void)memcpy(&event[3], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+1], 32); 2185 if (opcode == HCI_OPCODE_HCI_READ_LOCAL_EXTENDED_OOB_DATA){ 2186 event[2] = 3; 2187 (void)memcpy(&event[35], &packet[OFFSET_OF_DATA_IN_COMMAND_COMPLETE+33], 32); 2188 } else { 2189 event[2] = 1; 2190 } 2191 } 2192 hci_emit_event(event, sizeof(event), 0); 2193 break; 2194 } 2195 #endif 2196 #endif 2197 default: 2198 break; 2199 } 2200 } 2201 2202 #ifdef ENABLE_BLE 2203 static void event_handle_le_connection_complete(const uint8_t * packet){ 2204 bd_addr_t addr; 2205 bd_addr_type_t addr_type; 2206 hci_connection_t * conn; 2207 2208 // Connection management 2209 reverse_bd_addr(&packet[8], addr); 2210 addr_type = (bd_addr_type_t)packet[7]; 2211 log_info("LE Connection_complete (status=%u) type %u, %s", packet[3], addr_type, bd_addr_to_str(addr)); 2212 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2213 2214 #ifdef ENABLE_LE_CENTRAL 2215 // handle error: error is reported only to the initiator -> outgoing connection 2216 if (packet[3]){ 2217 2218 // handle cancelled outgoing connection 2219 // "If the cancellation was successful then, after the Command Complete event for the LE_Create_Connection_Cancel command, 2220 // either an LE Connection Complete or an LE Enhanced Connection Complete event shall be generated. 2221 // In either case, the event shall be sent with the error code Unknown Connection Identifier (0x02)." 2222 if (packet[3] == ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER){ 2223 // whitelist connect 2224 if (hci_is_le_connection_type(addr_type)){ 2225 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2226 } 2227 // get outgoing connection conn struct for direct connect 2228 conn = gap_get_outgoing_connection(); 2229 } 2230 2231 // outgoing le connection establishment is done 2232 if (conn){ 2233 // remove entry 2234 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 2235 btstack_memory_hci_connection_free( conn ); 2236 } 2237 return; 2238 } 2239 #endif 2240 2241 // on success, both hosts receive connection complete event 2242 if (packet[6] == HCI_ROLE_MASTER){ 2243 #ifdef ENABLE_LE_CENTRAL 2244 // if we're master on an le connection, it was an outgoing connection and we're done with it 2245 // note: no hci_connection_t object exists yet for connect with whitelist 2246 if (hci_is_le_connection_type(addr_type)){ 2247 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2248 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 2249 } 2250 #endif 2251 } else { 2252 #ifdef ENABLE_LE_PERIPHERAL 2253 // if we're slave, it was an incoming connection, advertisements have stopped 2254 hci_stack->le_advertisements_active = false; 2255 #endif 2256 } 2257 2258 // LE connections are auto-accepted, so just create a connection if there isn't one already 2259 if (!conn){ 2260 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2261 } 2262 2263 // no memory, sorry. 2264 if (!conn){ 2265 return; 2266 } 2267 2268 conn->state = OPEN; 2269 conn->role = packet[6]; 2270 conn->con_handle = hci_subevent_le_connection_complete_get_connection_handle(packet); 2271 conn->le_connection_interval = hci_subevent_le_connection_complete_get_conn_interval(packet); 2272 2273 #ifdef ENABLE_LE_PERIPHERAL 2274 if (packet[6] == HCI_ROLE_SLAVE){ 2275 hci_update_advertisements_enabled_for_current_roles(); 2276 } 2277 #endif 2278 2279 // init unenhanced att bearer mtu 2280 conn->att_connection.mtu = ATT_DEFAULT_MTU; 2281 conn->att_connection.mtu_exchanged = false; 2282 2283 // TODO: store - role, peer address type, conn_interval, conn_latency, supervision timeout, master clock 2284 2285 // restart timer 2286 // btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2287 // btstack_run_loop_add_timer(&conn->timeout); 2288 2289 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2290 2291 hci_emit_nr_connections_changed(); 2292 } 2293 #endif 2294 2295 static void event_handler(uint8_t *packet, uint16_t size){ 2296 2297 uint16_t event_length = packet[1]; 2298 2299 // assert packet is complete 2300 if (size != (event_length + 2u)){ 2301 log_error("event_handler called with packet of wrong size %d, expected %u => dropping packet", size, event_length + 2); 2302 return; 2303 } 2304 2305 bd_addr_type_t addr_type; 2306 hci_con_handle_t handle; 2307 hci_connection_t * conn; 2308 int i; 2309 int create_connection_cmd; 2310 2311 #ifdef ENABLE_CLASSIC 2312 hci_link_type_t link_type; 2313 bd_addr_t addr; 2314 #endif 2315 2316 // log_info("HCI:EVENT:%02x", hci_event_packet_get_type(packet)); 2317 2318 switch (hci_event_packet_get_type(packet)) { 2319 2320 case HCI_EVENT_COMMAND_COMPLETE: 2321 handle_command_complete_event(packet, size); 2322 break; 2323 2324 case HCI_EVENT_COMMAND_STATUS: 2325 // get num cmd packets - limit to 1 to reduce complexity 2326 hci_stack->num_cmd_packets = packet[3] ? 1 : 0; 2327 2328 // check command status to detected failed outgoing connections 2329 create_connection_cmd = 0; 2330 #ifdef ENABLE_CLASSIC 2331 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_create_connection)){ 2332 create_connection_cmd = 1; 2333 } 2334 #endif 2335 #ifdef ENABLE_LE_CENTRAL 2336 if (HCI_EVENT_IS_COMMAND_STATUS(packet, hci_le_create_connection)){ 2337 create_connection_cmd = 1; 2338 } 2339 #endif 2340 if (create_connection_cmd) { 2341 uint8_t status = hci_event_command_status_get_status(packet); 2342 addr_type = hci_stack->outgoing_addr_type; 2343 conn = hci_connection_for_bd_addr_and_type(hci_stack->outgoing_addr, addr_type); 2344 log_info("command status (create connection), status %x, connection %p, addr %s, type %x", status, conn, bd_addr_to_str(hci_stack->outgoing_addr), addr_type); 2345 2346 // reset outgoing address info 2347 memset(hci_stack->outgoing_addr, 0, 6); 2348 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_UNKNOWN; 2349 2350 // on error 2351 if (status != ERROR_CODE_SUCCESS){ 2352 #ifdef ENABLE_LE_CENTRAL 2353 if (hci_is_le_connection_type(addr_type)){ 2354 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 2355 } 2356 #endif 2357 // error => outgoing connection failed 2358 if (conn != NULL){ 2359 hci_handle_connection_failed(conn, status); 2360 } 2361 } 2362 } 2363 break; 2364 2365 case HCI_EVENT_NUMBER_OF_COMPLETED_PACKETS:{ 2366 if (size < 3) return; 2367 uint16_t num_handles = packet[2]; 2368 if (size != (3u + num_handles * 4u)) return; 2369 uint16_t offset = 3; 2370 for (i=0; i<num_handles;i++){ 2371 handle = little_endian_read_16(packet, offset) & 0x0fffu; 2372 offset += 2u; 2373 uint16_t num_packets = little_endian_read_16(packet, offset); 2374 offset += 2u; 2375 2376 conn = hci_connection_for_handle(handle); 2377 if (!conn){ 2378 log_error("hci_number_completed_packet lists unused con handle %u", handle); 2379 continue; 2380 } 2381 2382 if (conn->num_packets_sent >= num_packets){ 2383 conn->num_packets_sent -= num_packets; 2384 } else { 2385 log_error("hci_number_completed_packets, more packet slots freed then sent."); 2386 conn->num_packets_sent = 0; 2387 } 2388 // log_info("hci_number_completed_packet %u processed for handle %u, outstanding %u", num_packets, handle, conn->num_packets_sent); 2389 2390 #ifdef ENABLE_CLASSIC 2391 // For SCO, we do the can_send_now_check here 2392 hci_notify_if_sco_can_send_now(); 2393 #endif 2394 } 2395 break; 2396 } 2397 2398 #ifdef ENABLE_CLASSIC 2399 case HCI_EVENT_INQUIRY_COMPLETE: 2400 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_ACTIVE){ 2401 hci_stack->inquiry_state = GAP_INQUIRY_STATE_IDLE; 2402 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 2403 hci_emit_event(event, sizeof(event), 1); 2404 } 2405 break; 2406 case HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE: 2407 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W4_COMPLETE){ 2408 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_IDLE; 2409 } 2410 break; 2411 case HCI_EVENT_CONNECTION_REQUEST: 2412 reverse_bd_addr(&packet[2], addr); 2413 link_type = (hci_link_type_t) packet[11]; 2414 if (hci_stack->gap_classic_accept_callback != NULL){ 2415 if ((*hci_stack->gap_classic_accept_callback)(addr, link_type) == 0){ 2416 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_UNACCEPTABLE_BD_ADDR; 2417 bd_addr_copy(hci_stack->decline_addr, addr); 2418 break; 2419 } 2420 } 2421 2422 // TODO: eval COD 8-10 2423 log_info("Connection_incoming: %s, type %u", bd_addr_to_str(addr), (unsigned int) link_type); 2424 addr_type = (link_type == HCI_LINK_TYPE_ACL) ? BD_ADDR_TYPE_ACL : BD_ADDR_TYPE_SCO; 2425 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2426 if (!conn) { 2427 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 2428 } 2429 if (!conn) { 2430 // CONNECTION REJECTED DUE TO LIMITED RESOURCES (0X0D) 2431 hci_stack->decline_reason = ERROR_CODE_CONNECTION_REJECTED_DUE_TO_LIMITED_RESOURCES; 2432 bd_addr_copy(hci_stack->decline_addr, addr); 2433 break; 2434 } 2435 conn->role = HCI_ROLE_SLAVE; 2436 conn->state = RECEIVED_CONNECTION_REQUEST; 2437 // store info about eSCO 2438 if (link_type == HCI_LINK_TYPE_ESCO){ 2439 conn->remote_supported_features[0] |= 1; 2440 } 2441 hci_run(); 2442 break; 2443 2444 case HCI_EVENT_CONNECTION_COMPLETE: 2445 // Connection management 2446 reverse_bd_addr(&packet[5], addr); 2447 log_info("Connection_complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 2448 addr_type = BD_ADDR_TYPE_ACL; 2449 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2450 if (conn) { 2451 if (!packet[2]){ 2452 conn->state = OPEN; 2453 conn->con_handle = little_endian_read_16(packet, 3); 2454 2455 // queue get remote feature 2456 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 2457 2458 // queue set supervision timeout if we're master 2459 if ((hci_stack->link_supervision_timeout != 0) && (conn->role == HCI_ROLE_MASTER)){ 2460 connectionSetAuthenticationFlags(conn, WRITE_SUPERVISION_TIMEOUT); 2461 } 2462 2463 // restart timer 2464 btstack_run_loop_set_timer(&conn->timeout, HCI_CONNECTION_TIMEOUT_MS); 2465 btstack_run_loop_add_timer(&conn->timeout); 2466 2467 log_info("New connection: handle %u, %s", conn->con_handle, bd_addr_to_str(conn->address)); 2468 2469 hci_emit_nr_connections_changed(); 2470 } else { 2471 // connection failed 2472 hci_handle_connection_failed(conn, packet[2]); 2473 } 2474 } 2475 break; 2476 2477 case HCI_EVENT_SYNCHRONOUS_CONNECTION_COMPLETE: 2478 reverse_bd_addr(&packet[5], addr); 2479 log_info("Synchronous Connection Complete (status=%u) %s", packet[2], bd_addr_to_str(addr)); 2480 if (packet[2]){ 2481 // connection failed 2482 break; 2483 } 2484 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 2485 if (!conn) { 2486 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 2487 } 2488 if (!conn) { 2489 break; 2490 } 2491 conn->state = OPEN; 2492 conn->con_handle = little_endian_read_16(packet, 3); 2493 2494 #ifdef ENABLE_SCO_OVER_HCI 2495 // update SCO 2496 if (conn->address_type == BD_ADDR_TYPE_SCO && hci_stack->hci_transport && hci_stack->hci_transport->set_sco_config){ 2497 hci_stack->hci_transport->set_sco_config(hci_stack->sco_voice_setting_active, hci_number_sco_connections()); 2498 } 2499 // trigger can send now 2500 if (hci_have_usb_transport()){ 2501 hci_stack->sco_can_send_now = 1; 2502 } 2503 #endif 2504 break; 2505 2506 case HCI_EVENT_READ_REMOTE_SUPPORTED_FEATURES_COMPLETE: 2507 handle = little_endian_read_16(packet, 3); 2508 conn = hci_connection_for_handle(handle); 2509 if (!conn) break; 2510 if (!packet[2]){ 2511 const uint8_t * features = &packet[5]; 2512 hci_handle_remote_features_page_0(conn, features); 2513 2514 // read extended features if possible 2515 if (((hci_stack->local_supported_commands[1] & 1) != 0) && ((conn->remote_supported_features[0] & 2) != 0)) { 2516 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 2517 break; 2518 } 2519 } 2520 hci_handle_remote_features_received(conn); 2521 break; 2522 2523 case HCI_EVENT_READ_REMOTE_EXTENDED_FEATURES_COMPLETE: 2524 handle = little_endian_read_16(packet, 3); 2525 conn = hci_connection_for_handle(handle); 2526 if (!conn) break; 2527 // status = ok, page = 1 2528 if (!packet[2]) { 2529 uint8_t page_number = packet[5]; 2530 uint8_t maximum_page_number = packet[6]; 2531 const uint8_t * features = &packet[7]; 2532 bool done = false; 2533 switch (page_number){ 2534 case 1: 2535 hci_handle_remote_features_page_1(conn, features); 2536 if (maximum_page_number >= 2){ 2537 // get Secure Connections (Controller) from Page 2 if available 2538 conn->bonding_flags |= BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 2539 } else { 2540 // otherwise, assume SC (Controller) == SC (Host) 2541 if ((conn->bonding_flags & BONDING_REMOTE_SUPPORTS_SC_HOST) != 0){ 2542 conn->bonding_flags |= BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 2543 } 2544 done = true; 2545 } 2546 break; 2547 case 2: 2548 hci_handle_remote_features_page_2(conn, features); 2549 done = true; 2550 break; 2551 default: 2552 break; 2553 } 2554 if (!done) break; 2555 } 2556 hci_handle_remote_features_received(conn); 2557 break; 2558 2559 case HCI_EVENT_LINK_KEY_REQUEST: 2560 log_info("HCI_EVENT_LINK_KEY_REQUEST"); 2561 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_LINK_KEY_REQUEST); 2562 // request handled by hci_run() 2563 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], HANDLE_LINK_KEY_REQUEST); 2564 break; 2565 2566 case HCI_EVENT_LINK_KEY_NOTIFICATION: { 2567 reverse_bd_addr(&packet[2], addr); 2568 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 2569 if (!conn) break; 2570 conn->authentication_flags |= RECV_LINK_KEY_NOTIFICATION; 2571 link_key_type_t link_key_type = (link_key_type_t)packet[24]; 2572 // Change Connection Encryption keeps link key type 2573 if (link_key_type != CHANGED_COMBINATION_KEY){ 2574 conn->link_key_type = link_key_type; 2575 } 2576 gap_store_link_key_for_bd_addr(addr, &packet[8], conn->link_key_type); 2577 // still forward event to allow dismiss of pairing dialog 2578 break; 2579 } 2580 2581 case HCI_EVENT_PIN_CODE_REQUEST: 2582 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], LEGACY_PAIRING_ACTIVE); 2583 // non-bondable mode: pin code negative reply will be sent 2584 if (!hci_stack->bondable){ 2585 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], DENY_PIN_CODE_REQUEST); 2586 hci_run(); 2587 return; 2588 } 2589 // PIN CODE REQUEST means the link key request didn't succee -> delete stored link key 2590 if (!hci_stack->link_key_db) break; 2591 hci_event_pin_code_request_get_bd_addr(packet, addr); 2592 hci_stack->link_key_db->delete_link_key(addr); 2593 break; 2594 2595 case HCI_EVENT_IO_CAPABILITY_REQUEST: 2596 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], RECV_IO_CAPABILITIES_REQUEST); 2597 log_info("IO Capability Request received, stack bondable %u, io cap %u", hci_stack->bondable, hci_stack->ssp_io_capability); 2598 #ifndef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 2599 if (hci_stack->bondable && (hci_stack->ssp_io_capability != SSP_IO_CAPABILITY_UNKNOWN)){ 2600 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_IO_CAPABILITIES_REPLY); 2601 } else { 2602 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 2603 } 2604 #endif 2605 break; 2606 2607 #ifdef ENABLE_CLASSIC_PAIRING_OOB 2608 case HCI_EVENT_REMOTE_OOB_DATA_REQUEST: 2609 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SSP_PAIRING_ACTIVE); 2610 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_REMOTE_OOB_DATA_REPLY); 2611 break; 2612 #endif 2613 2614 case HCI_EVENT_USER_CONFIRMATION_REQUEST: 2615 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SSP_PAIRING_ACTIVE); 2616 if (!hci_stack->ssp_auto_accept) break; 2617 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_USER_CONFIRM_REPLY); 2618 break; 2619 2620 case HCI_EVENT_USER_PASSKEY_REQUEST: 2621 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SSP_PAIRING_ACTIVE); 2622 if (!hci_stack->ssp_auto_accept) break; 2623 hci_add_connection_flags_for_flipped_bd_addr(&packet[2], SEND_USER_PASSKEY_REPLY); 2624 break; 2625 2626 case HCI_EVENT_MODE_CHANGE: 2627 handle = hci_event_mode_change_get_handle(packet); 2628 conn = hci_connection_for_handle(handle); 2629 if (!conn) break; 2630 conn->connection_mode = hci_event_mode_change_get_mode(packet); 2631 log_info("HCI_EVENT_MODE_CHANGE, handle 0x%04x, mode %u", handle, conn->connection_mode); 2632 break; 2633 #endif 2634 2635 case HCI_EVENT_ENCRYPTION_CHANGE: 2636 handle = hci_event_encryption_change_get_connection_handle(packet); 2637 conn = hci_connection_for_handle(handle); 2638 if (!conn) break; 2639 if (hci_event_encryption_change_get_status(packet) == 0u) { 2640 uint8_t encryption_enabled = hci_event_encryption_change_get_encryption_enabled(packet); 2641 if (encryption_enabled){ 2642 if (hci_is_le_connection(conn)){ 2643 // For LE, we accept connection as encrypted 2644 conn->authentication_flags |= CONNECTION_ENCRYPTED; 2645 } 2646 #ifdef ENABLE_CLASSIC 2647 else { 2648 // Detect Secure Connection -> Legacy Connection Downgrade Attack (BIAS) 2649 bool sc_used_during_pairing = gap_secure_connection_for_link_key_type(conn->link_key_type) != 0; 2650 bool connected_uses_aes_ccm = encryption_enabled == 2; 2651 if (hci_stack->secure_connections_active && sc_used_during_pairing && !connected_uses_aes_ccm){ 2652 log_info("SC during pairing, but only E0 now -> abort"); 2653 conn->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 2654 break; 2655 } 2656 2657 // if AES-CCM is used, authentication used SC -> authentication was mutual and we can skip explicit authentication 2658 if (connected_uses_aes_ccm){ 2659 conn->authentication_flags |= CONNECTION_AUTHENTICATED; 2660 } 2661 2662 if ((hci_stack->local_supported_commands[0] & 0x80) != 0){ 2663 // For Classic, we need to validate encryption key size first, if possible (== supported by Controller) 2664 conn->bonding_flags |= BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 2665 } else { 2666 // if not, pretend everything is perfect 2667 hci_handle_read_encryption_key_size_complete(conn, 16); 2668 } 2669 } 2670 #endif 2671 } else { 2672 conn->authentication_flags &= ~CONNECTION_ENCRYPTED; 2673 } 2674 } 2675 2676 break; 2677 2678 #ifdef ENABLE_CLASSIC 2679 case HCI_EVENT_AUTHENTICATION_COMPLETE_EVENT: 2680 handle = hci_event_authentication_complete_get_connection_handle(packet); 2681 conn = hci_connection_for_handle(handle); 2682 if (!conn) break; 2683 2684 // ignore authentication event if we didn't request it 2685 if ((conn->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) == 0) break; 2686 2687 // dedicated bonding: send result and disconnect 2688 if (conn->bonding_flags & BONDING_DEDICATED){ 2689 conn->bonding_flags &= ~BONDING_DEDICATED; 2690 conn->bonding_flags |= BONDING_DISCONNECT_DEDICATED_DONE; 2691 conn->bonding_status = packet[2]; 2692 break; 2693 } 2694 2695 // authenticated only if auth status == 0 2696 if (hci_event_authentication_complete_get_status(packet) == 0){ 2697 // authenticated 2698 conn->authentication_flags |= CONNECTION_AUTHENTICATED; 2699 2700 // If link key sufficient for requested security and not already encrypted, start encryption 2701 if (((gap_security_level_for_link_key_type(conn->link_key_type) >= conn->requested_security_level)) && 2702 ((conn->authentication_flags & CONNECTION_ENCRYPTED) == 0)){ 2703 conn->bonding_flags |= BONDING_SEND_ENCRYPTION_REQUEST; 2704 break; 2705 } 2706 } 2707 2708 // emit updated security level 2709 hci_emit_security_level(handle, gap_security_level_for_connection(conn)); 2710 break; 2711 #endif 2712 2713 // HCI_EVENT_DISCONNECTION_COMPLETE 2714 // has been split, to first notify stack before shutting connection down 2715 // see end of function, too. 2716 case HCI_EVENT_DISCONNECTION_COMPLETE: 2717 if (packet[2]) break; // status != 0 2718 handle = little_endian_read_16(packet, 3); 2719 // drop outgoing ACL fragments if it is for closed connection and release buffer if tx not active 2720 if (hci_stack->acl_fragmentation_total_size > 0u) { 2721 if (handle == READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer)){ 2722 int release_buffer = hci_stack->acl_fragmentation_tx_active == 0u; 2723 log_info("drop fragmented ACL data for closed connection, release buffer %u", release_buffer); 2724 hci_stack->acl_fragmentation_total_size = 0; 2725 hci_stack->acl_fragmentation_pos = 0; 2726 if (release_buffer){ 2727 hci_release_packet_buffer(); 2728 } 2729 } 2730 } 2731 2732 conn = hci_connection_for_handle(handle); 2733 if (!conn) break; 2734 // mark connection for shutdown 2735 conn->state = RECEIVED_DISCONNECTION_COMPLETE; 2736 2737 // emit dedicatd bonding event 2738 if (conn->bonding_flags & BONDING_EMIT_COMPLETE_ON_DISCONNECT){ 2739 hci_emit_dedicated_bonding_result(conn->address, conn->bonding_status); 2740 } 2741 2742 #ifdef ENABLE_BLE 2743 #ifdef ENABLE_LE_PERIPHERAL 2744 // re-enable advertisements for le connections if active 2745 if (hci_is_le_connection(conn)){ 2746 hci_update_advertisements_enabled_for_current_roles(); 2747 } 2748 #endif 2749 #endif 2750 break; 2751 2752 case HCI_EVENT_HARDWARE_ERROR: 2753 log_error("Hardware Error: 0x%02x", packet[2]); 2754 if (hci_stack->hardware_error_callback){ 2755 (*hci_stack->hardware_error_callback)(packet[2]); 2756 } else { 2757 // if no special requests, just reboot stack 2758 hci_power_control_off(); 2759 hci_power_control_on(); 2760 } 2761 break; 2762 2763 #ifdef ENABLE_CLASSIC 2764 case HCI_EVENT_ROLE_CHANGE: 2765 if (packet[2]) break; // status != 0 2766 reverse_bd_addr(&packet[3], addr); 2767 addr_type = BD_ADDR_TYPE_ACL; 2768 conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 2769 if (!conn) break; 2770 conn->role = packet[9]; 2771 break; 2772 #endif 2773 2774 case HCI_EVENT_TRANSPORT_PACKET_SENT: 2775 // release packet buffer only for asynchronous transport and if there are not further fragements 2776 if (hci_transport_synchronous()) { 2777 log_error("Synchronous HCI Transport shouldn't send HCI_EVENT_TRANSPORT_PACKET_SENT"); 2778 return; // instead of break: to avoid re-entering hci_run() 2779 } 2780 hci_stack->acl_fragmentation_tx_active = 0; 2781 if (hci_stack->acl_fragmentation_total_size) break; 2782 hci_release_packet_buffer(); 2783 2784 // L2CAP receives this event via the hci_emit_event below 2785 2786 #ifdef ENABLE_CLASSIC 2787 // For SCO, we do the can_send_now_check here 2788 hci_notify_if_sco_can_send_now(); 2789 #endif 2790 break; 2791 2792 #ifdef ENABLE_CLASSIC 2793 case HCI_EVENT_SCO_CAN_SEND_NOW: 2794 // For SCO, we do the can_send_now_check here 2795 hci_stack->sco_can_send_now = 1; 2796 hci_notify_if_sco_can_send_now(); 2797 return; 2798 2799 // explode inquriy results for easier consumption 2800 case HCI_EVENT_INQUIRY_RESULT: 2801 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 2802 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 2803 gap_inquiry_explode(packet, size); 2804 break; 2805 #endif 2806 2807 #ifdef ENABLE_BLE 2808 case HCI_EVENT_LE_META: 2809 switch (packet[2]){ 2810 #ifdef ENABLE_LE_CENTRAL 2811 case HCI_SUBEVENT_LE_ADVERTISING_REPORT: 2812 // log_info("advertising report received"); 2813 if (!hci_stack->le_scanning_enabled) break; 2814 le_handle_advertisement_report(packet, size); 2815 break; 2816 #endif 2817 case HCI_SUBEVENT_LE_CONNECTION_COMPLETE: 2818 event_handle_le_connection_complete(packet); 2819 break; 2820 2821 // log_info("LE buffer size: %u, count %u", little_endian_read_16(packet,6), packet[8]); 2822 case HCI_SUBEVENT_LE_CONNECTION_UPDATE_COMPLETE: 2823 handle = hci_subevent_le_connection_update_complete_get_connection_handle(packet); 2824 conn = hci_connection_for_handle(handle); 2825 if (!conn) break; 2826 conn->le_connection_interval = hci_subevent_le_connection_update_complete_get_conn_interval(packet); 2827 break; 2828 2829 case HCI_SUBEVENT_LE_REMOTE_CONNECTION_PARAMETER_REQUEST: 2830 // connection 2831 handle = hci_subevent_le_remote_connection_parameter_request_get_connection_handle(packet); 2832 conn = hci_connection_for_handle(handle); 2833 if (conn) { 2834 // read arguments 2835 uint16_t le_conn_interval_min = hci_subevent_le_remote_connection_parameter_request_get_interval_min(packet); 2836 uint16_t le_conn_interval_max = hci_subevent_le_remote_connection_parameter_request_get_interval_max(packet); 2837 uint16_t le_conn_latency = hci_subevent_le_remote_connection_parameter_request_get_latency(packet); 2838 uint16_t le_supervision_timeout = hci_subevent_le_remote_connection_parameter_request_get_timeout(packet); 2839 2840 // validate against current connection parameter range 2841 le_connection_parameter_range_t existing_range; 2842 gap_get_connection_parameter_range(&existing_range); 2843 int update_parameter = gap_connection_parameter_range_included(&existing_range, le_conn_interval_min, le_conn_interval_max, le_conn_latency, le_supervision_timeout); 2844 if (update_parameter){ 2845 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_REPLY; 2846 conn->le_conn_interval_min = le_conn_interval_min; 2847 conn->le_conn_interval_max = le_conn_interval_max; 2848 conn->le_conn_latency = le_conn_latency; 2849 conn->le_supervision_timeout = le_supervision_timeout; 2850 } else { 2851 conn->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NEGATIVE_REPLY; 2852 } 2853 } 2854 break; 2855 #ifdef ENABLE_LE_LIMIT_ACL_FRAGMENT_BY_MAX_OCTETS 2856 case HCI_SUBEVENT_LE_DATA_LENGTH_CHANGE: 2857 handle = hci_subevent_le_data_length_change_get_connection_handle(packet); 2858 conn = hci_connection_for_handle(handle); 2859 if (conn) { 2860 conn->le_max_tx_octets = hci_subevent_le_data_length_change_get_max_tx_octets(packet); 2861 } 2862 break; 2863 #endif 2864 default: 2865 break; 2866 } 2867 break; 2868 #endif 2869 case HCI_EVENT_VENDOR_SPECIFIC: 2870 // Vendor specific commands often create vendor specific event instead of num completed packets 2871 // To avoid getting stuck as num_cmds_packets is zero, reset it to 1 for controllers with this behaviour 2872 switch (hci_stack->manufacturer){ 2873 case BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO: 2874 hci_stack->num_cmd_packets = 1; 2875 break; 2876 default: 2877 break; 2878 } 2879 break; 2880 default: 2881 break; 2882 } 2883 2884 handle_event_for_current_stack_state(packet, size); 2885 2886 // notify upper stack 2887 hci_emit_event(packet, size, 0); // don't dump, already happened in packet handler 2888 2889 // moved here to give upper stack a chance to close down everything with hci_connection_t intact 2890 if ((hci_event_packet_get_type(packet) == HCI_EVENT_DISCONNECTION_COMPLETE) && (packet[2] == 0)){ 2891 handle = little_endian_read_16(packet, 3); 2892 hci_connection_t * aConn = hci_connection_for_handle(handle); 2893 // discard connection if app did not trigger a reconnect in the event handler 2894 if (aConn && aConn->state == RECEIVED_DISCONNECTION_COMPLETE){ 2895 hci_shutdown_connection(aConn); 2896 } 2897 } 2898 2899 // execute main loop 2900 hci_run(); 2901 } 2902 2903 #ifdef ENABLE_CLASSIC 2904 2905 static void sco_tx_timeout_handler(btstack_timer_source_t * ts); 2906 static void sco_schedule_tx(hci_connection_t * conn); 2907 2908 static void sco_tx_timeout_handler(btstack_timer_source_t * ts){ 2909 log_debug("SCO TX Timeout"); 2910 hci_con_handle_t con_handle = (hci_con_handle_t) (uintptr_t) btstack_run_loop_get_timer_context(ts); 2911 hci_connection_t * conn = hci_connection_for_handle(con_handle); 2912 if (!conn) return; 2913 2914 // trigger send 2915 conn->sco_tx_ready = 1; 2916 // extra packet if CVSD but SCO buffer is too short 2917 if (((hci_stack->sco_voice_setting_active & 0x03) != 0x03) && (hci_stack->sco_data_packet_length < 123)){ 2918 conn->sco_tx_ready++; 2919 } 2920 hci_notify_if_sco_can_send_now(); 2921 } 2922 2923 2924 #define SCO_TX_AFTER_RX_MS (6) 2925 2926 static void sco_schedule_tx(hci_connection_t * conn){ 2927 2928 uint32_t now = btstack_run_loop_get_time_ms(); 2929 uint32_t sco_tx_ms = conn->sco_rx_ms + SCO_TX_AFTER_RX_MS; 2930 int time_delta_ms = sco_tx_ms - now; 2931 2932 btstack_timer_source_t * timer = (conn->sco_rx_count & 1) ? &conn->timeout : &conn->timeout_sco; 2933 2934 // log_error("SCO TX at %u in %u", (int) sco_tx_ms, time_delta_ms); 2935 btstack_run_loop_set_timer(timer, time_delta_ms); 2936 btstack_run_loop_set_timer_context(timer, (void *) (uintptr_t) conn->con_handle); 2937 btstack_run_loop_set_timer_handler(timer, &sco_tx_timeout_handler); 2938 btstack_run_loop_add_timer(timer); 2939 } 2940 2941 static void sco_handler(uint8_t * packet, uint16_t size){ 2942 // lookup connection struct 2943 hci_con_handle_t con_handle = READ_SCO_CONNECTION_HANDLE(packet); 2944 hci_connection_t * conn = hci_connection_for_handle(con_handle); 2945 if (!conn) return; 2946 2947 // CSR 8811 prefixes 60 byte SCO packet in transparent mode with 20 zero bytes -> skip first 20 payload bytes 2948 if (hci_stack->manufacturer == BLUETOOTH_COMPANY_ID_CAMBRIDGE_SILICON_RADIO){ 2949 if ((size == 83) && ((hci_stack->sco_voice_setting_active & 0x03) == 0x03)){ 2950 packet[2] = 0x3c; 2951 memmove(&packet[3], &packet[23], 63); 2952 size = 63; 2953 } 2954 } 2955 2956 if (hci_have_usb_transport()){ 2957 // Nothing to do 2958 } else { 2959 // 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); 2960 if (hci_stack->synchronous_flow_control_enabled == 0){ 2961 uint32_t now = btstack_run_loop_get_time_ms(); 2962 2963 if (!conn->sco_rx_valid){ 2964 // ignore first 10 packets 2965 conn->sco_rx_count++; 2966 // log_debug("sco rx count %u", conn->sco_rx_count); 2967 if (conn->sco_rx_count == 10) { 2968 // use first timestamp as is and pretent it just started 2969 conn->sco_rx_ms = now; 2970 conn->sco_rx_valid = 1; 2971 conn->sco_rx_count = 0; 2972 sco_schedule_tx(conn); 2973 } 2974 } else { 2975 // track expected arrival timme 2976 conn->sco_rx_count++; 2977 conn->sco_rx_ms += 7; 2978 int delta = (int32_t) (now - conn->sco_rx_ms); 2979 if (delta > 0){ 2980 conn->sco_rx_ms++; 2981 } 2982 // log_debug("sco rx %u", conn->sco_rx_ms); 2983 sco_schedule_tx(conn); 2984 } 2985 } 2986 } 2987 // deliver to app 2988 if (hci_stack->sco_packet_handler) { 2989 hci_stack->sco_packet_handler(HCI_SCO_DATA_PACKET, 0, packet, size); 2990 } 2991 2992 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 2993 conn->num_packets_completed++; 2994 hci_stack->host_completed_packets = 1; 2995 hci_run(); 2996 #endif 2997 } 2998 #endif 2999 3000 static void packet_handler(uint8_t packet_type, uint8_t *packet, uint16_t size){ 3001 hci_dump_packet(packet_type, 1, packet, size); 3002 switch (packet_type) { 3003 case HCI_EVENT_PACKET: 3004 event_handler(packet, size); 3005 break; 3006 case HCI_ACL_DATA_PACKET: 3007 acl_handler(packet, size); 3008 break; 3009 #ifdef ENABLE_CLASSIC 3010 case HCI_SCO_DATA_PACKET: 3011 sco_handler(packet, size); 3012 break; 3013 #endif 3014 default: 3015 break; 3016 } 3017 } 3018 3019 /** 3020 * @brief Add event packet handler. 3021 */ 3022 void hci_add_event_handler(btstack_packet_callback_registration_t * callback_handler){ 3023 btstack_linked_list_add_tail(&hci_stack->event_handlers, (btstack_linked_item_t*) callback_handler); 3024 } 3025 3026 3027 /** Register HCI packet handlers */ 3028 void hci_register_acl_packet_handler(btstack_packet_handler_t handler){ 3029 hci_stack->acl_packet_handler = handler; 3030 } 3031 3032 #ifdef ENABLE_CLASSIC 3033 /** 3034 * @brief Registers a packet handler for SCO data. Used for HSP and HFP profiles. 3035 */ 3036 void hci_register_sco_packet_handler(btstack_packet_handler_t handler){ 3037 hci_stack->sco_packet_handler = handler; 3038 } 3039 #endif 3040 3041 static void hci_state_reset(void){ 3042 // no connections yet 3043 hci_stack->connections = NULL; 3044 3045 // keep discoverable/connectable as this has been requested by the client(s) 3046 // hci_stack->discoverable = 0; 3047 // hci_stack->connectable = 0; 3048 // hci_stack->bondable = 1; 3049 // hci_stack->own_addr_type = 0; 3050 3051 // buffer is free 3052 hci_stack->hci_packet_buffer_reserved = 0; 3053 3054 // no pending cmds 3055 hci_stack->decline_reason = 0; 3056 hci_stack->new_scan_enable_value = 0xff; 3057 3058 hci_stack->secure_connections_active = false; 3059 3060 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3061 hci_stack->classic_read_local_oob_data = true; 3062 #endif 3063 3064 // LE 3065 #ifdef ENABLE_BLE 3066 memset(hci_stack->le_random_address, 0, 6); 3067 hci_stack->le_random_address_set = 0; 3068 #endif 3069 #ifdef ENABLE_LE_CENTRAL 3070 hci_stack->le_scanning_active = 0; 3071 hci_stack->le_connecting_state = LE_CONNECTING_IDLE; 3072 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 3073 hci_stack->le_whitelist_capacity = 0; 3074 #endif 3075 } 3076 3077 #ifdef ENABLE_CLASSIC 3078 /** 3079 * @brief Configure Bluetooth hardware control. Has to be called before power on. 3080 */ 3081 void hci_set_link_key_db(btstack_link_key_db_t const * link_key_db){ 3082 // store and open remote device db 3083 hci_stack->link_key_db = link_key_db; 3084 if (hci_stack->link_key_db) { 3085 hci_stack->link_key_db->open(); 3086 } 3087 } 3088 #endif 3089 3090 void hci_init(const hci_transport_t *transport, const void *config){ 3091 3092 #ifdef HAVE_MALLOC 3093 if (!hci_stack) { 3094 hci_stack = (hci_stack_t*) malloc(sizeof(hci_stack_t)); 3095 } 3096 #else 3097 hci_stack = &hci_stack_static; 3098 #endif 3099 memset(hci_stack, 0, sizeof(hci_stack_t)); 3100 3101 // reference to use transport layer implementation 3102 hci_stack->hci_transport = transport; 3103 3104 // reference to used config 3105 hci_stack->config = config; 3106 3107 // setup pointer for outgoing packet buffer 3108 hci_stack->hci_packet_buffer = &hci_stack->hci_packet_buffer_data[HCI_OUTGOING_PRE_BUFFER_SIZE]; 3109 3110 // max acl payload size defined in config.h 3111 hci_stack->acl_data_packet_length = HCI_ACL_PAYLOAD_SIZE; 3112 3113 // register packet handlers with transport 3114 transport->register_packet_handler(&packet_handler); 3115 3116 hci_stack->state = HCI_STATE_OFF; 3117 3118 // class of device 3119 hci_stack->class_of_device = 0x007a020c; // Smartphone 3120 3121 // bondable by default 3122 hci_stack->bondable = 1; 3123 3124 #ifdef ENABLE_CLASSIC 3125 // classic name 3126 hci_stack->local_name = default_classic_name; 3127 3128 // Master slave policy 3129 hci_stack->master_slave_policy = 1; 3130 3131 // Allow Role Switch 3132 hci_stack->allow_role_switch = 1; 3133 3134 // Default / minimum security level = 2 3135 hci_stack->gap_security_level = LEVEL_2; 3136 3137 // Errata-11838 mandates 7 bytes for GAP Security Level 1-3 3138 hci_stack->gap_required_encyrption_key_size = 7; 3139 #endif 3140 3141 // Secure Simple Pairing default: enable, no I/O capabilities, general bonding, mitm not required, auto accept 3142 hci_stack->ssp_enable = 1; 3143 hci_stack->ssp_io_capability = SSP_IO_CAPABILITY_NO_INPUT_NO_OUTPUT; 3144 hci_stack->ssp_authentication_requirement = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_GENERAL_BONDING; 3145 hci_stack->ssp_auto_accept = 1; 3146 3147 // Secure Connections: enable (requires support from Controller) 3148 hci_stack->secure_connections_enable = true; 3149 3150 // voice setting - signed 16 bit pcm data with CVSD over the air 3151 hci_stack->sco_voice_setting = 0x60; 3152 3153 #ifdef ENABLE_LE_CENTRAL 3154 // connection parameter to use for outgoing connections 3155 hci_stack->le_connection_scan_interval = 0x0060; // 60ms 3156 hci_stack->le_connection_scan_window = 0x0030; // 30ms 3157 hci_stack->le_connection_interval_min = 0x0008; // 10 ms 3158 hci_stack->le_connection_interval_max = 0x0018; // 30 ms 3159 hci_stack->le_connection_latency = 4; // 4 3160 hci_stack->le_supervision_timeout = 0x0048; // 720 ms 3161 hci_stack->le_minimum_ce_length = 2; // 1.25 ms 3162 hci_stack->le_maximum_ce_length = 0x0030; // 30 ms 3163 3164 // default LE Scanning 3165 hci_stack->le_scan_type = 0x1; // active 3166 hci_stack->le_scan_interval = 0x1e0; // 300 ms 3167 hci_stack->le_scan_window = 0x30; // 30 ms 3168 #endif 3169 3170 #ifdef ENABLE_LE_PERIPHERAL 3171 hci_stack->le_max_number_peripheral_connections = 1; // only single connection as peripheral 3172 #endif 3173 3174 // connection parameter range used to answer connection parameter update requests in l2cap 3175 hci_stack->le_connection_parameter_range.le_conn_interval_min = 6; 3176 hci_stack->le_connection_parameter_range.le_conn_interval_max = 3200; 3177 hci_stack->le_connection_parameter_range.le_conn_latency_min = 0; 3178 hci_stack->le_connection_parameter_range.le_conn_latency_max = 500; 3179 hci_stack->le_connection_parameter_range.le_supervision_timeout_min = 10; 3180 hci_stack->le_connection_parameter_range.le_supervision_timeout_max = 3200; 3181 3182 hci_state_reset(); 3183 } 3184 3185 void hci_deinit(void){ 3186 #ifdef HAVE_MALLOC 3187 if (hci_stack) { 3188 free(hci_stack); 3189 } 3190 #endif 3191 hci_stack = NULL; 3192 3193 #ifdef ENABLE_CLASSIC 3194 disable_l2cap_timeouts = 0; 3195 #endif 3196 } 3197 3198 /** 3199 * @brief Configure Bluetooth chipset driver. Has to be called before power on, or right after receiving the local version information 3200 */ 3201 void hci_set_chipset(const btstack_chipset_t *chipset_driver){ 3202 hci_stack->chipset = chipset_driver; 3203 3204 // reset chipset driver - init is also called on power_up 3205 if (hci_stack->chipset && hci_stack->chipset->init){ 3206 hci_stack->chipset->init(hci_stack->config); 3207 } 3208 } 3209 3210 /** 3211 * @brief Configure Bluetooth hardware control. Has to be called after hci_init() but before power on. 3212 */ 3213 void hci_set_control(const btstack_control_t *hardware_control){ 3214 // references to used control implementation 3215 hci_stack->control = hardware_control; 3216 // init with transport config 3217 hardware_control->init(hci_stack->config); 3218 } 3219 3220 void hci_close(void){ 3221 // close remote device db 3222 if (hci_stack->link_key_db) { 3223 hci_stack->link_key_db->close(); 3224 } 3225 3226 btstack_linked_list_iterator_t lit; 3227 btstack_linked_list_iterator_init(&lit, &hci_stack->connections); 3228 while (btstack_linked_list_iterator_has_next(&lit)){ 3229 // cancel all l2cap connections by emitting dicsconnection complete before shutdown (free) connection 3230 hci_connection_t * connection = (hci_connection_t*) btstack_linked_list_iterator_next(&lit); 3231 hci_emit_disconnection_complete(connection->con_handle, 0x16); // terminated by local host 3232 hci_shutdown_connection(connection); 3233 } 3234 3235 hci_power_control(HCI_POWER_OFF); 3236 3237 #ifdef HAVE_MALLOC 3238 free(hci_stack); 3239 #endif 3240 hci_stack = NULL; 3241 } 3242 3243 #ifdef ENABLE_CLASSIC 3244 void gap_set_required_encryption_key_size(uint8_t encryption_key_size){ 3245 // validate ranage and set 3246 if (encryption_key_size < 7) return; 3247 if (encryption_key_size > 16) return; 3248 hci_stack->gap_required_encyrption_key_size = encryption_key_size; 3249 } 3250 3251 void gap_set_security_level(gap_security_level_t security_level){ 3252 hci_stack->gap_security_level = security_level; 3253 } 3254 3255 gap_security_level_t gap_get_security_level(void){ 3256 return hci_stack->gap_security_level; 3257 } 3258 #endif 3259 3260 #ifdef ENABLE_CLASSIC 3261 void gap_set_class_of_device(uint32_t class_of_device){ 3262 hci_stack->class_of_device = class_of_device; 3263 } 3264 3265 void gap_set_default_link_policy_settings(uint16_t default_link_policy_settings){ 3266 hci_stack->default_link_policy_settings = default_link_policy_settings; 3267 } 3268 3269 void gap_set_allow_role_switch(bool allow_role_switch){ 3270 hci_stack->allow_role_switch = allow_role_switch ? 1 : 0; 3271 } 3272 3273 uint8_t hci_get_allow_role_switch(void){ 3274 return hci_stack->allow_role_switch; 3275 } 3276 3277 void gap_set_link_supervision_timeout(uint16_t link_supervision_timeout){ 3278 hci_stack->link_supervision_timeout = link_supervision_timeout; 3279 } 3280 3281 void hci_disable_l2cap_timeout_check(void){ 3282 disable_l2cap_timeouts = 1; 3283 } 3284 #endif 3285 3286 #if !defined(HAVE_PLATFORM_IPHONE_OS) && !defined (HAVE_HOST_CONTROLLER_API) 3287 // Set Public BD ADDR - passed on to Bluetooth chipset if supported in bt_control_h 3288 void hci_set_bd_addr(bd_addr_t addr){ 3289 (void)memcpy(hci_stack->custom_bd_addr, addr, 6); 3290 hci_stack->custom_bd_addr_set = 1; 3291 } 3292 #endif 3293 3294 // State-Module-Driver overview 3295 // state module low-level 3296 // HCI_STATE_OFF off close 3297 // HCI_STATE_INITIALIZING, on open 3298 // HCI_STATE_WORKING, on open 3299 // HCI_STATE_HALTING, on open 3300 // HCI_STATE_SLEEPING, off/sleep close 3301 // HCI_STATE_FALLING_ASLEEP on open 3302 3303 static int hci_power_control_on(void){ 3304 3305 // power on 3306 int err = 0; 3307 if (hci_stack->control && hci_stack->control->on){ 3308 err = (*hci_stack->control->on)(); 3309 } 3310 if (err){ 3311 log_error( "POWER_ON failed"); 3312 hci_emit_hci_open_failed(); 3313 return err; 3314 } 3315 3316 // int chipset driver 3317 if (hci_stack->chipset && hci_stack->chipset->init){ 3318 hci_stack->chipset->init(hci_stack->config); 3319 } 3320 3321 // init transport 3322 if (hci_stack->hci_transport->init){ 3323 hci_stack->hci_transport->init(hci_stack->config); 3324 } 3325 3326 // open transport 3327 err = hci_stack->hci_transport->open(); 3328 if (err){ 3329 log_error( "HCI_INIT failed, turning Bluetooth off again"); 3330 if (hci_stack->control && hci_stack->control->off){ 3331 (*hci_stack->control->off)(); 3332 } 3333 hci_emit_hci_open_failed(); 3334 return err; 3335 } 3336 return 0; 3337 } 3338 3339 static void hci_power_control_off(void){ 3340 3341 log_info("hci_power_control_off"); 3342 3343 // close low-level device 3344 hci_stack->hci_transport->close(); 3345 3346 log_info("hci_power_control_off - hci_transport closed"); 3347 3348 // power off 3349 if (hci_stack->control && hci_stack->control->off){ 3350 (*hci_stack->control->off)(); 3351 } 3352 3353 log_info("hci_power_control_off - control closed"); 3354 3355 hci_stack->state = HCI_STATE_OFF; 3356 } 3357 3358 static void hci_power_control_sleep(void){ 3359 3360 log_info("hci_power_control_sleep"); 3361 3362 #if 0 3363 // don't close serial port during sleep 3364 3365 // close low-level device 3366 hci_stack->hci_transport->close(hci_stack->config); 3367 #endif 3368 3369 // sleep mode 3370 if (hci_stack->control && hci_stack->control->sleep){ 3371 (*hci_stack->control->sleep)(); 3372 } 3373 3374 hci_stack->state = HCI_STATE_SLEEPING; 3375 } 3376 3377 static int hci_power_control_wake(void){ 3378 3379 log_info("hci_power_control_wake"); 3380 3381 // wake on 3382 if (hci_stack->control && hci_stack->control->wake){ 3383 (*hci_stack->control->wake)(); 3384 } 3385 3386 #if 0 3387 // open low-level device 3388 int err = hci_stack->hci_transport->open(hci_stack->config); 3389 if (err){ 3390 log_error( "HCI_INIT failed, turning Bluetooth off again"); 3391 if (hci_stack->control && hci_stack->control->off){ 3392 (*hci_stack->control->off)(); 3393 } 3394 hci_emit_hci_open_failed(); 3395 return err; 3396 } 3397 #endif 3398 3399 return 0; 3400 } 3401 3402 static void hci_power_transition_to_initializing(void){ 3403 // set up state machine 3404 hci_stack->num_cmd_packets = 1; // assume that one cmd can be sent 3405 hci_stack->hci_packet_buffer_reserved = 0; 3406 hci_stack->state = HCI_STATE_INITIALIZING; 3407 hci_stack->substate = HCI_INIT_SEND_RESET; 3408 } 3409 3410 // returns error 3411 static int hci_power_control_state_off(HCI_POWER_MODE power_mode){ 3412 int err; 3413 switch (power_mode){ 3414 case HCI_POWER_ON: 3415 err = hci_power_control_on(); 3416 if (err != 0) { 3417 log_error("hci_power_control_on() error %d", err); 3418 return err; 3419 } 3420 hci_power_transition_to_initializing(); 3421 break; 3422 case HCI_POWER_OFF: 3423 // do nothing 3424 break; 3425 case HCI_POWER_SLEEP: 3426 // do nothing (with SLEEP == OFF) 3427 break; 3428 default: 3429 btstack_assert(false); 3430 break; 3431 } 3432 return ERROR_CODE_SUCCESS; 3433 } 3434 3435 static int hci_power_control_state_initializing(HCI_POWER_MODE power_mode){ 3436 switch (power_mode){ 3437 case HCI_POWER_ON: 3438 // do nothing 3439 break; 3440 case HCI_POWER_OFF: 3441 // no connections yet, just turn it off 3442 hci_power_control_off(); 3443 break; 3444 case HCI_POWER_SLEEP: 3445 // no connections yet, just turn it off 3446 hci_power_control_sleep(); 3447 break; 3448 default: 3449 btstack_assert(false); 3450 break; 3451 } 3452 return ERROR_CODE_SUCCESS; 3453 } 3454 3455 static int hci_power_control_state_working(HCI_POWER_MODE power_mode) { 3456 switch (power_mode){ 3457 case HCI_POWER_ON: 3458 // do nothing 3459 break; 3460 case HCI_POWER_OFF: 3461 // see hci_run 3462 hci_stack->state = HCI_STATE_HALTING; 3463 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL_NO_TIMER; 3464 break; 3465 case HCI_POWER_SLEEP: 3466 // see hci_run 3467 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 3468 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 3469 break; 3470 default: 3471 btstack_assert(false); 3472 break; 3473 } 3474 return ERROR_CODE_SUCCESS; 3475 } 3476 3477 static int hci_power_control_state_halting(HCI_POWER_MODE power_mode) { 3478 switch (power_mode){ 3479 case HCI_POWER_ON: 3480 hci_power_transition_to_initializing(); 3481 break; 3482 case HCI_POWER_OFF: 3483 // do nothing 3484 break; 3485 case HCI_POWER_SLEEP: 3486 // see hci_run 3487 hci_stack->state = HCI_STATE_FALLING_ASLEEP; 3488 hci_stack->substate = HCI_FALLING_ASLEEP_DISCONNECT; 3489 break; 3490 default: 3491 btstack_assert(false); 3492 break; 3493 } 3494 return ERROR_CODE_SUCCESS; 3495 } 3496 3497 static int hci_power_control_state_falling_asleep(HCI_POWER_MODE power_mode) { 3498 switch (power_mode){ 3499 case HCI_POWER_ON: 3500 3501 #ifdef HAVE_PLATFORM_IPHONE_OS 3502 // nothing to do, if H4 supports power management 3503 if (btstack_control_iphone_power_management_enabled()){ 3504 hci_stack->state = HCI_STATE_INITIALIZING; 3505 hci_stack->substate = HCI_INIT_WRITE_SCAN_ENABLE; // init after sleep 3506 break; 3507 } 3508 #endif 3509 hci_power_transition_to_initializing(); 3510 break; 3511 case HCI_POWER_OFF: 3512 // see hci_run 3513 hci_stack->state = HCI_STATE_HALTING; 3514 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL_NO_TIMER; 3515 break; 3516 case HCI_POWER_SLEEP: 3517 // do nothing 3518 break; 3519 default: 3520 btstack_assert(false); 3521 break; 3522 } 3523 return ERROR_CODE_SUCCESS; 3524 } 3525 3526 static int hci_power_control_state_sleeping(HCI_POWER_MODE power_mode) { 3527 int err; 3528 switch (power_mode){ 3529 case HCI_POWER_ON: 3530 #ifdef HAVE_PLATFORM_IPHONE_OS 3531 // nothing to do, if H4 supports power management 3532 if (btstack_control_iphone_power_management_enabled()){ 3533 hci_stack->state = HCI_STATE_INITIALIZING; 3534 hci_stack->substate = HCI_INIT_AFTER_SLEEP; 3535 hci_update_scan_enable(); 3536 break; 3537 } 3538 #endif 3539 err = hci_power_control_wake(); 3540 if (err) return err; 3541 hci_power_transition_to_initializing(); 3542 break; 3543 case HCI_POWER_OFF: 3544 hci_stack->state = HCI_STATE_HALTING; 3545 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL_NO_TIMER; 3546 break; 3547 case HCI_POWER_SLEEP: 3548 // do nothing 3549 break; 3550 default: 3551 btstack_assert(false); 3552 break; 3553 } 3554 return ERROR_CODE_SUCCESS; 3555 } 3556 3557 int hci_power_control(HCI_POWER_MODE power_mode){ 3558 log_info("hci_power_control: %d, current mode %u", power_mode, hci_stack->state); 3559 int err = 0; 3560 switch (hci_stack->state){ 3561 case HCI_STATE_OFF: 3562 err = hci_power_control_state_off(power_mode); 3563 break; 3564 case HCI_STATE_INITIALIZING: 3565 err = hci_power_control_state_initializing(power_mode); 3566 break; 3567 case HCI_STATE_WORKING: 3568 err = hci_power_control_state_working(power_mode); 3569 break; 3570 case HCI_STATE_HALTING: 3571 err = hci_power_control_state_halting(power_mode); 3572 break; 3573 case HCI_STATE_FALLING_ASLEEP: 3574 err = hci_power_control_state_falling_asleep(power_mode); 3575 break; 3576 case HCI_STATE_SLEEPING: 3577 err = hci_power_control_state_sleeping(power_mode); 3578 break; 3579 default: 3580 btstack_assert(false); 3581 break; 3582 } 3583 if (err != 0){ 3584 return err; 3585 } 3586 3587 // create internal event 3588 hci_emit_state(); 3589 3590 // trigger next/first action 3591 hci_run(); 3592 3593 return 0; 3594 } 3595 3596 3597 #ifdef ENABLE_CLASSIC 3598 3599 static void hci_update_scan_enable(void){ 3600 // 2 = page scan, 1 = inq scan 3601 hci_stack->new_scan_enable_value = (hci_stack->connectable << 1) | hci_stack->discoverable; 3602 hci_run(); 3603 } 3604 3605 void gap_discoverable_control(uint8_t enable){ 3606 if (enable) enable = 1; // normalize argument 3607 3608 if (hci_stack->discoverable == enable){ 3609 hci_emit_discoverable_enabled(hci_stack->discoverable); 3610 return; 3611 } 3612 3613 hci_stack->discoverable = enable; 3614 hci_update_scan_enable(); 3615 } 3616 3617 void gap_connectable_control(uint8_t enable){ 3618 if (enable) enable = 1; // normalize argument 3619 3620 // don't emit event 3621 if (hci_stack->connectable == enable) return; 3622 3623 hci_stack->connectable = enable; 3624 hci_update_scan_enable(); 3625 } 3626 #endif 3627 3628 void gap_local_bd_addr(bd_addr_t address_buffer){ 3629 (void)memcpy(address_buffer, hci_stack->local_bd_addr, 6); 3630 } 3631 3632 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 3633 static void hci_host_num_completed_packets(void){ 3634 3635 // create packet manually as arrays are not supported and num_commands should not get reduced 3636 hci_reserve_packet_buffer(); 3637 uint8_t * packet = hci_get_outgoing_packet_buffer(); 3638 3639 uint16_t size = 0; 3640 uint16_t num_handles = 0; 3641 packet[size++] = 0x35; 3642 packet[size++] = 0x0c; 3643 size++; // skip param len 3644 size++; // skip num handles 3645 3646 // add { handle, packets } entries 3647 btstack_linked_item_t * it; 3648 for (it = (btstack_linked_item_t *) hci_stack->connections; it ; it = it->next){ 3649 hci_connection_t * connection = (hci_connection_t *) it; 3650 if (connection->num_packets_completed){ 3651 little_endian_store_16(packet, size, connection->con_handle); 3652 size += 2; 3653 little_endian_store_16(packet, size, connection->num_packets_completed); 3654 size += 2; 3655 // 3656 num_handles++; 3657 connection->num_packets_completed = 0; 3658 } 3659 } 3660 3661 packet[2] = size - 3; 3662 packet[3] = num_handles; 3663 3664 hci_stack->host_completed_packets = 0; 3665 3666 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 3667 hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 3668 3669 // release packet buffer for synchronous transport implementations 3670 if (hci_transport_synchronous()){ 3671 hci_release_packet_buffer(); 3672 hci_emit_transport_packet_sent(); 3673 } 3674 } 3675 #endif 3676 3677 static void hci_halting_timeout_handler(btstack_timer_source_t * ds){ 3678 UNUSED(ds); 3679 hci_stack->substate = HCI_HALTING_CLOSE; 3680 // allow packet handlers to defer final shutdown 3681 hci_emit_state(); 3682 hci_run(); 3683 } 3684 3685 static bool hci_run_acl_fragments(void){ 3686 if (hci_stack->acl_fragmentation_total_size > 0u) { 3687 hci_con_handle_t con_handle = READ_ACL_CONNECTION_HANDLE(hci_stack->hci_packet_buffer); 3688 hci_connection_t *connection = hci_connection_for_handle(con_handle); 3689 if (connection) { 3690 if (hci_can_send_prepared_acl_packet_now(con_handle)){ 3691 hci_send_acl_packet_fragments(connection); 3692 return true; 3693 } 3694 } else { 3695 // connection gone -> discard further fragments 3696 log_info("hci_run: fragmented ACL packet no connection -> discard fragment"); 3697 hci_stack->acl_fragmentation_total_size = 0; 3698 hci_stack->acl_fragmentation_pos = 0; 3699 } 3700 } 3701 return false; 3702 } 3703 3704 #ifdef ENABLE_CLASSIC 3705 static bool hci_run_general_gap_classic(void){ 3706 3707 // decline incoming connections 3708 if (hci_stack->decline_reason){ 3709 uint8_t reason = hci_stack->decline_reason; 3710 hci_stack->decline_reason = 0; 3711 hci_send_cmd(&hci_reject_connection_request, hci_stack->decline_addr, reason); 3712 return true; 3713 } 3714 // send scan enable 3715 if ((hci_stack->state == HCI_STATE_WORKING) && (hci_stack->new_scan_enable_value != 0xff) && hci_classic_supported()){ 3716 hci_send_cmd(&hci_write_scan_enable, hci_stack->new_scan_enable_value); 3717 hci_stack->new_scan_enable_value = 0xff; 3718 return true; 3719 } 3720 // start/stop inquiry 3721 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)){ 3722 uint8_t duration = hci_stack->inquiry_state; 3723 hci_stack->inquiry_state = GAP_INQUIRY_STATE_ACTIVE; 3724 hci_send_cmd(&hci_inquiry, GAP_IAC_GENERAL_INQUIRY, duration, 0); 3725 return true; 3726 } 3727 if (hci_stack->inquiry_state == GAP_INQUIRY_STATE_W2_CANCEL){ 3728 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W4_CANCELLED; 3729 hci_send_cmd(&hci_inquiry_cancel); 3730 return true; 3731 } 3732 // remote name request 3733 if (hci_stack->remote_name_state == GAP_REMOTE_NAME_STATE_W2_SEND){ 3734 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W4_COMPLETE; 3735 hci_send_cmd(&hci_remote_name_request, hci_stack->remote_name_addr, 3736 hci_stack->remote_name_page_scan_repetition_mode, 0, hci_stack->remote_name_clock_offset); 3737 return true; 3738 } 3739 #ifdef ENABLE_CLASSIC_PAIRING_OOB 3740 // Local OOB data 3741 if ((hci_stack->state == HCI_STATE_WORKING) && hci_stack->classic_read_local_oob_data){ 3742 hci_stack->classic_read_local_oob_data = false; 3743 if (hci_stack->local_supported_commands[1] & 0x10u){ 3744 hci_send_cmd(&hci_read_local_extended_oob_data); 3745 } else { 3746 hci_send_cmd(&hci_read_local_oob_data); 3747 } 3748 } 3749 #endif 3750 // pairing 3751 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE){ 3752 uint8_t state = hci_stack->gap_pairing_state; 3753 hci_stack->gap_pairing_state = GAP_PAIRING_STATE_IDLE; 3754 switch (state){ 3755 case GAP_PAIRING_STATE_SEND_PIN: 3756 hci_send_cmd(&hci_pin_code_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_pin_len, hci_stack->gap_pairing_input.gap_pairing_pin); 3757 break; 3758 case GAP_PAIRING_STATE_SEND_PIN_NEGATIVE: 3759 hci_send_cmd(&hci_pin_code_request_negative_reply, hci_stack->gap_pairing_addr); 3760 break; 3761 case GAP_PAIRING_STATE_SEND_PASSKEY: 3762 hci_send_cmd(&hci_user_passkey_request_reply, hci_stack->gap_pairing_addr, hci_stack->gap_pairing_input.gap_pairing_passkey); 3763 break; 3764 case GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE: 3765 hci_send_cmd(&hci_user_passkey_request_negative_reply, hci_stack->gap_pairing_addr); 3766 break; 3767 case GAP_PAIRING_STATE_SEND_CONFIRMATION: 3768 hci_send_cmd(&hci_user_confirmation_request_reply, hci_stack->gap_pairing_addr); 3769 break; 3770 case GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE: 3771 hci_send_cmd(&hci_user_confirmation_request_negative_reply, hci_stack->gap_pairing_addr); 3772 break; 3773 default: 3774 break; 3775 } 3776 return true; 3777 } 3778 return false; 3779 } 3780 #endif 3781 3782 #ifdef ENABLE_BLE 3783 static bool hci_run_general_gap_le(void){ 3784 3785 // advertisements, active scanning, and creating connections requires random address to be set if using private address 3786 3787 if (hci_stack->state != HCI_STATE_WORKING) return false; 3788 if ( (hci_stack->le_own_addr_type != BD_ADDR_TYPE_LE_PUBLIC) && (hci_stack->le_random_address_set == 0u) ) return false; 3789 3790 3791 // Phase 1: collect what to stop 3792 3793 bool scanning_stop = false; 3794 bool connecting_stop = false; 3795 bool advertising_stop = false; 3796 3797 #ifndef ENABLE_LE_CENTRAL 3798 UNUSED(scanning_stop); 3799 UNUSED(connecting_stop); 3800 #endif 3801 #ifndef ENABLE_LE_PERIPHERAL 3802 UNUSED(advertising_stop); 3803 #endif 3804 3805 // check if whitelist needs modification 3806 bool whitelist_modification_pending = false; 3807 btstack_linked_list_iterator_t lit; 3808 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 3809 while (btstack_linked_list_iterator_has_next(&lit)){ 3810 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 3811 if (entry->state & (LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER)){ 3812 whitelist_modification_pending = true; 3813 break; 3814 } 3815 } 3816 // check if resolving list needs modification 3817 bool resolving_list_modification_pending = false; 3818 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 3819 bool resolving_list_supported = (hci_stack->local_supported_commands[1] & (1 << 2)) != 0; 3820 if (resolving_list_supported && hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_DONE){ 3821 resolving_list_modification_pending = true; 3822 } 3823 #endif 3824 3825 #ifdef ENABLE_LE_CENTRAL 3826 // scanning control 3827 if (hci_stack->le_scanning_active) { 3828 // stop if: 3829 // - parameter change required 3830 // - it's disabled 3831 // - whitelist change required but used for scanning 3832 // - resolving list modified 3833 bool scanning_uses_whitelist = (hci_stack->le_scan_filter_policy & 1) == 1; 3834 if ((hci_stack->le_scanning_param_update) || 3835 !hci_stack->le_scanning_enabled || 3836 scanning_uses_whitelist || 3837 resolving_list_modification_pending){ 3838 3839 scanning_stop = true; 3840 } 3841 } 3842 #endif 3843 3844 #ifdef ENABLE_LE_CENTRAL 3845 // connecting control 3846 bool connecting_with_whitelist; 3847 switch (hci_stack->le_connecting_state){ 3848 case LE_CONNECTING_DIRECT: 3849 case LE_CONNECTING_WHITELIST: 3850 // stop connecting if: 3851 // - connecting uses white and whitelist modification pending 3852 // - if it got disabled 3853 // - resolving list modified 3854 connecting_with_whitelist = hci_stack->le_connecting_state == LE_CONNECTING_WHITELIST; 3855 if ((connecting_with_whitelist && whitelist_modification_pending) || 3856 (hci_stack->le_connecting_request == LE_CONNECTING_IDLE) || 3857 resolving_list_modification_pending) { 3858 3859 connecting_stop = true; 3860 } 3861 break; 3862 default: 3863 break; 3864 } 3865 #endif 3866 3867 #ifdef ENABLE_LE_PERIPHERAL 3868 // le advertisement control 3869 if (hci_stack->le_advertisements_active){ 3870 // stop if: 3871 // - parameter change required 3872 // - it's disabled 3873 // - whitelist change required but used for advertisement filter policy 3874 // - resolving list modified 3875 bool advertising_uses_whitelist = hci_stack->le_advertisements_filter_policy > 0; 3876 if ((hci_stack->le_advertisements_todo != 0) || 3877 !hci_stack->le_advertisements_enabled_for_current_roles || 3878 (advertising_uses_whitelist & whitelist_modification_pending) || 3879 resolving_list_modification_pending) { 3880 3881 advertising_stop = true; 3882 } 3883 } 3884 #endif 3885 3886 3887 // Phase 2: stop everything that should be off during modifications 3888 3889 #ifdef ENABLE_LE_CENTRAL 3890 if (scanning_stop){ 3891 hci_stack->le_scanning_active = false; 3892 hci_send_cmd(&hci_le_set_scan_enable, 0, 0); 3893 return true; 3894 } 3895 #endif 3896 3897 #ifdef ENABLE_LE_CENTRAL 3898 if (connecting_stop){ 3899 hci_send_cmd(&hci_le_create_connection_cancel); 3900 return true; 3901 } 3902 #endif 3903 3904 #ifdef ENABLE_LE_PERIPHERAL 3905 if (advertising_stop){ 3906 hci_stack->le_advertisements_active = false; 3907 hci_send_cmd(&hci_le_set_advertise_enable, 0); 3908 return true; 3909 } 3910 #endif 3911 3912 // Phase 3: modify 3913 3914 #ifdef ENABLE_LE_CENTRAL 3915 if (hci_stack->le_scanning_param_update){ 3916 hci_stack->le_scanning_param_update = false; 3917 hci_send_cmd(&hci_le_set_scan_parameters, hci_stack->le_scan_type, hci_stack->le_scan_interval, hci_stack->le_scan_window, 3918 hci_stack->le_own_addr_type, hci_stack->le_scan_filter_policy); 3919 return true; 3920 } 3921 #endif 3922 3923 #ifdef ENABLE_LE_PERIPHERAL 3924 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_PARAMS){ 3925 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_PARAMS; 3926 hci_send_cmd(&hci_le_set_advertising_parameters, 3927 hci_stack->le_advertisements_interval_min, 3928 hci_stack->le_advertisements_interval_max, 3929 hci_stack->le_advertisements_type, 3930 hci_stack->le_own_addr_type, 3931 hci_stack->le_advertisements_direct_address_type, 3932 hci_stack->le_advertisements_direct_address, 3933 hci_stack->le_advertisements_channel_map, 3934 hci_stack->le_advertisements_filter_policy); 3935 return true; 3936 } 3937 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_ADV_DATA){ 3938 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 3939 uint8_t adv_data_clean[31]; 3940 memset(adv_data_clean, 0, sizeof(adv_data_clean)); 3941 (void)memcpy(adv_data_clean, hci_stack->le_advertisements_data, 3942 hci_stack->le_advertisements_data_len); 3943 btstack_replace_bd_addr_placeholder(adv_data_clean, hci_stack->le_advertisements_data_len, hci_stack->local_bd_addr); 3944 hci_send_cmd(&hci_le_set_advertising_data, hci_stack->le_advertisements_data_len, adv_data_clean); 3945 return true; 3946 } 3947 if (hci_stack->le_advertisements_todo & LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA){ 3948 hci_stack->le_advertisements_todo &= ~LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 3949 uint8_t scan_data_clean[31]; 3950 memset(scan_data_clean, 0, sizeof(scan_data_clean)); 3951 (void)memcpy(scan_data_clean, hci_stack->le_scan_response_data, 3952 hci_stack->le_scan_response_data_len); 3953 btstack_replace_bd_addr_placeholder(scan_data_clean, hci_stack->le_scan_response_data_len, hci_stack->local_bd_addr); 3954 hci_send_cmd(&hci_le_set_scan_response_data, hci_stack->le_scan_response_data_len, scan_data_clean); 3955 return true; 3956 } 3957 #endif 3958 3959 3960 #ifdef ENABLE_LE_CENTRAL 3961 // if connect with whitelist was active and is not cancelled yet, wait until next time 3962 if (hci_stack->le_connecting_state == LE_CONNECTING_CANCEL) return false; 3963 #endif 3964 3965 // LE Whitelist Management 3966 if (whitelist_modification_pending){ 3967 // add/remove entries 3968 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 3969 while (btstack_linked_list_iterator_has_next(&lit)){ 3970 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 3971 if (entry->state & LE_WHITELIST_REMOVE_FROM_CONTROLLER){ 3972 entry->state &= ~LE_WHITELIST_REMOVE_FROM_CONTROLLER; 3973 hci_send_cmd(&hci_le_remove_device_from_white_list, entry->address_type, entry->address); 3974 return true; 3975 } 3976 if (entry->state & LE_WHITELIST_ADD_TO_CONTROLLER){ 3977 entry->state &= ~LE_WHITELIST_ADD_TO_CONTROLLER; 3978 entry->state |= LE_WHITELIST_ON_CONTROLLER; 3979 hci_send_cmd(&hci_le_add_device_to_white_list, entry->address_type, entry->address); 3980 return true; 3981 } 3982 if ((entry->state & LE_WHITELIST_ON_CONTROLLER) == 0){ 3983 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 3984 btstack_memory_whitelist_entry_free(entry); 3985 } 3986 } 3987 } 3988 3989 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 3990 // LE Resolving List Management 3991 if (resolving_list_supported) { 3992 uint16_t i; 3993 switch (hci_stack->le_resolving_list_state) { 3994 case LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION: 3995 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 3996 hci_send_cmd(&hci_le_set_address_resolution_enabled, 1); 3997 return true; 3998 case LE_RESOLVING_LIST_READ_SIZE: 3999 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_SEND_CLEAR; 4000 hci_send_cmd(&hci_le_read_resolving_list_size); 4001 return true; 4002 case LE_RESOLVING_LIST_SEND_CLEAR: 4003 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 4004 (void) memset(hci_stack->le_resolving_list_add_entries, 0xff, 4005 sizeof(hci_stack->le_resolving_list_add_entries)); 4006 (void) memset(hci_stack->le_resolving_list_remove_entries, 0, 4007 sizeof(hci_stack->le_resolving_list_remove_entries)); 4008 hci_send_cmd(&hci_le_clear_resolving_list); 4009 return true; 4010 case LE_RESOLVING_LIST_REMOVE_ENTRIES: 4011 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 4012 uint8_t offset = i >> 3; 4013 uint8_t mask = 1 << (i & 7); 4014 if ((hci_stack->le_resolving_list_remove_entries[offset] & mask) == 0) continue; 4015 hci_stack->le_resolving_list_remove_entries[offset] &= ~mask; 4016 bd_addr_t peer_identity_addreses; 4017 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 4018 sm_key_t peer_irk; 4019 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 4020 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 4021 4022 #ifdef ENABLE_LE_WHITELIST_TOUCH_AFTER_RESOLVING_LIST_UPDATE 4023 // trigger whitelist entry 'update' (work around for controller bug) 4024 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 4025 while (btstack_linked_list_iterator_has_next(&lit)) { 4026 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&lit); 4027 if (entry->address_type != peer_identity_addr_type) continue; 4028 if (memcmp(entry->address, peer_identity_addreses, 6) != 0) continue; 4029 log_info("trigger whitelist update %s", bd_addr_to_str(peer_identity_addreses)); 4030 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER | LE_WHITELIST_ADD_TO_CONTROLLER; 4031 } 4032 #endif 4033 4034 hci_send_cmd(&hci_le_remove_device_from_resolving_list, peer_identity_addr_type, 4035 peer_identity_addreses); 4036 return true; 4037 } 4038 4039 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_ADD_ENTRIES; 4040 4041 /* fall through */ 4042 4043 case LE_RESOLVING_LIST_ADD_ENTRIES: 4044 for (i = 0; i < MAX_NUM_RESOLVING_LIST_ENTRIES && i < le_device_db_max_count(); i++) { 4045 uint8_t offset = i >> 3; 4046 uint8_t mask = 1 << (i & 7); 4047 if ((hci_stack->le_resolving_list_add_entries[offset] & mask) == 0) continue; 4048 hci_stack->le_resolving_list_add_entries[offset] &= ~mask; 4049 bd_addr_t peer_identity_addreses; 4050 int peer_identity_addr_type = (int) BD_ADDR_TYPE_UNKNOWN; 4051 sm_key_t peer_irk; 4052 le_device_db_info(i, &peer_identity_addr_type, peer_identity_addreses, peer_irk); 4053 if (peer_identity_addr_type == BD_ADDR_TYPE_UNKNOWN) continue; 4054 const uint8_t *local_irk = gap_get_persistent_irk(); 4055 // command uses format specifier 'P' that stores 16-byte value without flip 4056 uint8_t local_irk_flipped[16]; 4057 uint8_t peer_irk_flipped[16]; 4058 reverse_128(local_irk, local_irk_flipped); 4059 reverse_128(peer_irk, peer_irk_flipped); 4060 hci_send_cmd(&hci_le_add_device_to_resolving_list, peer_identity_addr_type, peer_identity_addreses, 4061 peer_irk_flipped, local_irk_flipped); 4062 return true; 4063 } 4064 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 4065 break; 4066 4067 default: 4068 break; 4069 } 4070 } 4071 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_DONE; 4072 #endif 4073 4074 // Phase 4: restore state 4075 4076 #ifdef ENABLE_LE_CENTRAL 4077 // re-start scanning 4078 if ((hci_stack->le_scanning_enabled && !hci_stack->le_scanning_active)){ 4079 hci_stack->le_scanning_active = true; 4080 hci_send_cmd(&hci_le_set_scan_enable, 1, 0); 4081 return true; 4082 } 4083 #endif 4084 4085 #ifdef ENABLE_LE_CENTRAL 4086 // re-start connecting 4087 if ( (hci_stack->le_connecting_state == LE_CONNECTING_IDLE) && (hci_stack->le_connecting_request == LE_CONNECTING_WHITELIST)){ 4088 bd_addr_t null_addr; 4089 memset(null_addr, 0, 6); 4090 hci_send_cmd(&hci_le_create_connection, 4091 hci_stack->le_connection_scan_interval, // scan interval: 60 ms 4092 hci_stack->le_connection_scan_window, // scan interval: 30 ms 4093 1, // use whitelist 4094 0, // peer address type 4095 null_addr, // peer bd addr 4096 hci_stack->le_own_addr_type, // our addr type: 4097 hci_stack->le_connection_interval_min, // conn interval min 4098 hci_stack->le_connection_interval_max, // conn interval max 4099 hci_stack->le_connection_latency, // conn latency 4100 hci_stack->le_supervision_timeout, // conn latency 4101 hci_stack->le_minimum_ce_length, // min ce length 4102 hci_stack->le_maximum_ce_length // max ce length 4103 ); 4104 return true; 4105 } 4106 #endif 4107 4108 #ifdef ENABLE_LE_PERIPHERAL 4109 // re-start advertising 4110 if (hci_stack->le_advertisements_enabled_for_current_roles && !hci_stack->le_advertisements_active){ 4111 // check if advertisements should be enabled given 4112 hci_stack->le_advertisements_active = true; 4113 hci_send_cmd(&hci_le_set_advertise_enable, 1); 4114 return true; 4115 } 4116 #endif 4117 4118 return false; 4119 } 4120 #endif 4121 4122 static bool hci_run_general_pending_commands(void){ 4123 btstack_linked_item_t * it; 4124 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 4125 hci_connection_t * connection = (hci_connection_t *) it; 4126 4127 switch(connection->state){ 4128 case SEND_CREATE_CONNECTION: 4129 switch(connection->address_type){ 4130 #ifdef ENABLE_CLASSIC 4131 case BD_ADDR_TYPE_ACL: 4132 log_info("sending hci_create_connection"); 4133 hci_send_cmd(&hci_create_connection, connection->address, hci_usable_acl_packet_types(), 0, 0, 0, hci_stack->allow_role_switch); 4134 break; 4135 #endif 4136 default: 4137 #ifdef ENABLE_BLE 4138 #ifdef ENABLE_LE_CENTRAL 4139 log_info("sending hci_le_create_connection"); 4140 hci_send_cmd(&hci_le_create_connection, 4141 hci_stack->le_connection_scan_interval, // conn scan interval 4142 hci_stack->le_connection_scan_window, // conn scan windows 4143 0, // don't use whitelist 4144 connection->address_type, // peer address type 4145 connection->address, // peer bd addr 4146 hci_stack->le_own_addr_type, // our addr type: 4147 hci_stack->le_connection_interval_min, // conn interval min 4148 hci_stack->le_connection_interval_max, // conn interval max 4149 hci_stack->le_connection_latency, // conn latency 4150 hci_stack->le_supervision_timeout, // conn latency 4151 hci_stack->le_minimum_ce_length, // min ce length 4152 hci_stack->le_maximum_ce_length // max ce length 4153 ); 4154 connection->state = SENT_CREATE_CONNECTION; 4155 #endif 4156 #endif 4157 break; 4158 } 4159 return true; 4160 4161 #ifdef ENABLE_CLASSIC 4162 case RECEIVED_CONNECTION_REQUEST: 4163 connection->role = HCI_ROLE_SLAVE; 4164 if (connection->address_type == BD_ADDR_TYPE_ACL){ 4165 log_info("sending hci_accept_connection_request"); 4166 connection->state = ACCEPTED_CONNECTION_REQUEST; 4167 hci_send_cmd(&hci_accept_connection_request, connection->address, hci_stack->master_slave_policy); 4168 } 4169 return true; 4170 #endif 4171 4172 #ifdef ENABLE_BLE 4173 #ifdef ENABLE_LE_CENTRAL 4174 case SEND_CANCEL_CONNECTION: 4175 connection->state = SENT_CANCEL_CONNECTION; 4176 hci_send_cmd(&hci_le_create_connection_cancel); 4177 return true; 4178 #endif 4179 #endif 4180 case SEND_DISCONNECT: 4181 connection->state = SENT_DISCONNECT; 4182 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4183 return true; 4184 4185 default: 4186 break; 4187 } 4188 4189 // no further commands if connection is about to get shut down 4190 if (connection->state == SENT_DISCONNECT) continue; 4191 4192 if (connection->authentication_flags & READ_RSSI){ 4193 connectionClearAuthenticationFlags(connection, READ_RSSI); 4194 hci_send_cmd(&hci_read_rssi, connection->con_handle); 4195 return true; 4196 } 4197 4198 #ifdef ENABLE_CLASSIC 4199 4200 if (connection->authentication_flags & WRITE_SUPERVISION_TIMEOUT){ 4201 connectionClearAuthenticationFlags(connection, WRITE_SUPERVISION_TIMEOUT); 4202 hci_send_cmd(&hci_write_link_supervision_timeout, connection->con_handle, hci_stack->link_supervision_timeout); 4203 return true; 4204 } 4205 4206 if (connection->authentication_flags & HANDLE_LINK_KEY_REQUEST){ 4207 log_info("responding to link key request, have link key db: %u", hci_stack->link_key_db != NULL); 4208 connectionClearAuthenticationFlags(connection, HANDLE_LINK_KEY_REQUEST); 4209 4210 link_key_t link_key; 4211 link_key_type_t link_key_type; 4212 bool have_link_key = hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(connection->address, link_key, &link_key_type); 4213 4214 const uint16_t sc_enabled_mask = BONDING_REMOTE_SUPPORTS_SC_HOST | BONDING_REMOTE_SUPPORTS_SC_CONTROLLER; 4215 bool sc_enabled_remote = (connection->bonding_flags & sc_enabled_mask) == sc_enabled_mask; 4216 bool sc_downgrade = have_link_key && (gap_secure_connection_for_link_key_type(link_key_type) == 1) && !sc_enabled_remote; 4217 if (sc_downgrade){ 4218 log_info("Link key based on SC, but remote does not support SC -> disconnect"); 4219 connection->state = SENT_DISCONNECT; 4220 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 4221 return true; 4222 } 4223 4224 bool security_level_sufficient = have_link_key && (gap_security_level_for_link_key_type(link_key_type) >= connection->requested_security_level); 4225 if (have_link_key && security_level_sufficient){ 4226 connection->link_key_type = link_key_type; 4227 hci_send_cmd(&hci_link_key_request_reply, connection->address, &link_key); 4228 } else { 4229 hci_send_cmd(&hci_link_key_request_negative_reply, connection->address); 4230 } 4231 return true; 4232 } 4233 4234 if (connection->authentication_flags & DENY_PIN_CODE_REQUEST){ 4235 log_info("denying to pin request"); 4236 connectionClearAuthenticationFlags(connection, DENY_PIN_CODE_REQUEST); 4237 hci_send_cmd(&hci_pin_code_request_negative_reply, connection->address); 4238 return true; 4239 } 4240 4241 if (connection->authentication_flags & SEND_IO_CAPABILITIES_REPLY){ 4242 connectionClearAuthenticationFlags(connection, SEND_IO_CAPABILITIES_REPLY); 4243 // tweak authentication requirements 4244 uint8_t authreq = hci_stack->ssp_authentication_requirement; 4245 if (connection->bonding_flags & BONDING_DEDICATED){ 4246 authreq = SSP_IO_AUTHREQ_MITM_PROTECTION_NOT_REQUIRED_DEDICATED_BONDING; 4247 } 4248 if (gap_mitm_protection_required_for_security_level(connection->requested_security_level)){ 4249 authreq |= 1; 4250 } 4251 uint8_t have_oob_data = 0; 4252 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4253 if (connection->classic_oob_c_192 != NULL){ 4254 have_oob_data |= 1; 4255 } 4256 if (connection->classic_oob_c_256 != NULL){ 4257 have_oob_data |= 2; 4258 } 4259 #endif 4260 hci_send_cmd(&hci_io_capability_request_reply, &connection->address, hci_stack->ssp_io_capability, have_oob_data, authreq); 4261 return true; 4262 } 4263 4264 if (connection->authentication_flags & SEND_IO_CAPABILITIES_NEGATIVE_REPLY) { 4265 connectionClearAuthenticationFlags(connection, SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 4266 hci_send_cmd(&hci_io_capability_request_negative_reply, &connection->address, ERROR_CODE_PAIRING_NOT_ALLOWED); 4267 return true; 4268 } 4269 4270 #ifdef ENABLE_CLASSIC_PAIRING_OOB 4271 if (connection->authentication_flags & SEND_REMOTE_OOB_DATA_REPLY){ 4272 connectionClearAuthenticationFlags(connection, SEND_REMOTE_OOB_DATA_REPLY); 4273 const uint8_t zero[16] = { 0 }; 4274 const uint8_t * r_192 = zero; 4275 const uint8_t * c_192 = zero; 4276 const uint8_t * r_256 = zero; 4277 const uint8_t * c_256 = zero; 4278 // verify P-256 OOB 4279 if ((connection->classic_oob_c_256 != NULL) && ((hci_stack->local_supported_commands[1] & 0x08u) != 0)) { 4280 c_256 = connection->classic_oob_c_256; 4281 if (connection->classic_oob_r_256 != NULL) { 4282 r_256 = connection->classic_oob_r_256; 4283 } 4284 } 4285 // verify P-192 OOB 4286 if ((connection->classic_oob_c_192 != NULL)) { 4287 c_192 = connection->classic_oob_c_192; 4288 if (connection->classic_oob_r_192 != NULL) { 4289 r_192 = connection->classic_oob_r_192; 4290 } 4291 } 4292 // Reply 4293 if (c_256 != zero) { 4294 hci_send_cmd(&hci_remote_oob_extended_data_request_reply, &connection->address, c_192, r_192, c_256, r_256); 4295 } else if (c_192 != zero){ 4296 hci_send_cmd(&hci_remote_oob_data_request_reply, &connection->address, c_192, r_192); 4297 } else { 4298 hci_send_cmd(&hci_remote_oob_data_request_negative_reply, &connection->address); 4299 } 4300 return true; 4301 } 4302 #endif 4303 4304 if (connection->authentication_flags & SEND_USER_CONFIRM_REPLY){ 4305 connectionClearAuthenticationFlags(connection, SEND_USER_CONFIRM_REPLY); 4306 hci_send_cmd(&hci_user_confirmation_request_reply, &connection->address); 4307 return true; 4308 } 4309 4310 if (connection->authentication_flags & SEND_USER_PASSKEY_REPLY){ 4311 connectionClearAuthenticationFlags(connection, SEND_USER_PASSKEY_REPLY); 4312 hci_send_cmd(&hci_user_passkey_request_reply, &connection->address, 000000); 4313 return true; 4314 } 4315 4316 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_0){ 4317 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_0; 4318 hci_send_cmd(&hci_read_remote_supported_features_command, connection->con_handle); 4319 return true; 4320 } 4321 4322 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_1){ 4323 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_1; 4324 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 1); 4325 return true; 4326 } 4327 4328 if (connection->bonding_flags & BONDING_REQUEST_REMOTE_FEATURES_PAGE_2){ 4329 connection->bonding_flags &= ~BONDING_REQUEST_REMOTE_FEATURES_PAGE_2; 4330 hci_send_cmd(&hci_read_remote_extended_features_command, connection->con_handle, 2); 4331 return true; 4332 } 4333 4334 if (connection->bonding_flags & BONDING_DISCONNECT_DEDICATED_DONE){ 4335 connection->bonding_flags &= ~BONDING_DISCONNECT_DEDICATED_DONE; 4336 connection->bonding_flags |= BONDING_EMIT_COMPLETE_ON_DISCONNECT; 4337 connection->state = SENT_DISCONNECT; 4338 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4339 return true; 4340 } 4341 4342 if (connection->bonding_flags & BONDING_SEND_AUTHENTICATE_REQUEST){ 4343 connection->bonding_flags &= ~BONDING_SEND_AUTHENTICATE_REQUEST; 4344 connection->bonding_flags |= BONDING_SENT_AUTHENTICATE_REQUEST; 4345 hci_send_cmd(&hci_authentication_requested, connection->con_handle); 4346 return true; 4347 } 4348 4349 if (connection->bonding_flags & BONDING_SEND_ENCRYPTION_REQUEST){ 4350 connection->bonding_flags &= ~BONDING_SEND_ENCRYPTION_REQUEST; 4351 hci_send_cmd(&hci_set_connection_encryption, connection->con_handle, 1); 4352 return true; 4353 } 4354 if (connection->bonding_flags & BONDING_SEND_READ_ENCRYPTION_KEY_SIZE){ 4355 connection->bonding_flags &= ~BONDING_SEND_READ_ENCRYPTION_KEY_SIZE; 4356 hci_send_cmd(&hci_read_encryption_key_size, connection->con_handle, 1); 4357 return true; 4358 } 4359 #endif 4360 4361 if (connection->bonding_flags & BONDING_DISCONNECT_SECURITY_BLOCK){ 4362 connection->bonding_flags &= ~BONDING_DISCONNECT_SECURITY_BLOCK; 4363 if (connection->state != SENT_DISCONNECT){ 4364 connection->state = SENT_DISCONNECT; 4365 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_AUTHENTICATION_FAILURE); 4366 return true; 4367 } 4368 } 4369 4370 #ifdef ENABLE_CLASSIC 4371 uint16_t sniff_min_interval; 4372 switch (connection->sniff_min_interval){ 4373 case 0: 4374 break; 4375 case 0xffff: 4376 connection->sniff_min_interval = 0; 4377 hci_send_cmd(&hci_exit_sniff_mode, connection->con_handle); 4378 return true; 4379 default: 4380 sniff_min_interval = connection->sniff_min_interval; 4381 connection->sniff_min_interval = 0; 4382 hci_send_cmd(&hci_sniff_mode, connection->con_handle, connection->sniff_max_interval, sniff_min_interval, connection->sniff_attempt, connection->sniff_timeout); 4383 return true; 4384 } 4385 4386 if (connection->request_role != HCI_ROLE_INVALID){ 4387 hci_role_t role = connection->request_role; 4388 connection->request_role = HCI_ROLE_INVALID; 4389 hci_send_cmd(&hci_switch_role_command, connection->address, role); 4390 return true; 4391 } 4392 #endif 4393 4394 #ifdef ENABLE_BLE 4395 switch (connection->le_con_parameter_update_state){ 4396 // response to L2CAP CON PARAMETER UPDATE REQUEST 4397 case CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS: 4398 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 4399 hci_send_cmd(&hci_le_connection_update, connection->con_handle, connection->le_conn_interval_min, 4400 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 4401 0x0000, 0xffff); 4402 return true; 4403 case CON_PARAMETER_UPDATE_REPLY: 4404 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 4405 hci_send_cmd(&hci_le_remote_connection_parameter_request_reply, connection->con_handle, connection->le_conn_interval_min, 4406 connection->le_conn_interval_max, connection->le_conn_latency, connection->le_supervision_timeout, 4407 0x0000, 0xffff); 4408 return true; 4409 case CON_PARAMETER_UPDATE_NEGATIVE_REPLY: 4410 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_NONE; 4411 hci_send_cmd(&hci_le_remote_connection_parameter_request_negative_reply, ERROR_CODE_UNSUPPORTED_LMP_PARAMETER_VALUE_UNSUPPORTED_LL_PARAMETER_VALUE); 4412 return true; 4413 default: 4414 break; 4415 } 4416 if (connection->le_phy_update_all_phys != 0xffu){ 4417 uint8_t all_phys = connection->le_phy_update_all_phys; 4418 connection->le_phy_update_all_phys = 0xff; 4419 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); 4420 return true; 4421 } 4422 #endif 4423 } 4424 return false; 4425 } 4426 4427 static void hci_run(void){ 4428 4429 bool done; 4430 4431 // send continuation fragments first, as they block the prepared packet buffer 4432 done = hci_run_acl_fragments(); 4433 if (done) return; 4434 4435 #ifdef ENABLE_HCI_CONTROLLER_TO_HOST_FLOW_CONTROL 4436 // send host num completed packets next as they don't require num_cmd_packets > 0 4437 if (!hci_can_send_comand_packet_transport()) return; 4438 if (hci_stack->host_completed_packets){ 4439 hci_host_num_completed_packets(); 4440 return; 4441 } 4442 #endif 4443 4444 if (!hci_can_send_command_packet_now()) return; 4445 4446 // global/non-connection oriented commands 4447 4448 4449 #ifdef ENABLE_CLASSIC 4450 // general gap classic 4451 done = hci_run_general_gap_classic(); 4452 if (done) return; 4453 #endif 4454 4455 #ifdef ENABLE_BLE 4456 // general gap le 4457 done = hci_run_general_gap_le(); 4458 if (done) return; 4459 #endif 4460 4461 // send pending HCI commands 4462 done = hci_run_general_pending_commands(); 4463 if (done) return; 4464 4465 // stack state sub statemachines 4466 hci_connection_t * connection; 4467 switch (hci_stack->state){ 4468 case HCI_STATE_INITIALIZING: 4469 hci_initializing_run(); 4470 break; 4471 4472 case HCI_STATE_HALTING: 4473 4474 log_info("HCI_STATE_HALTING, substate %x\n", hci_stack->substate); 4475 switch (hci_stack->substate){ 4476 case HCI_HALTING_DISCONNECT_ALL_NO_TIMER: 4477 case HCI_HALTING_DISCONNECT_ALL_TIMER: 4478 4479 #ifdef ENABLE_BLE 4480 #ifdef ENABLE_LE_CENTRAL 4481 // free whitelist entries 4482 { 4483 btstack_linked_list_iterator_t lit; 4484 btstack_linked_list_iterator_init(&lit, &hci_stack->le_whitelist); 4485 while (btstack_linked_list_iterator_has_next(&lit)){ 4486 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&lit); 4487 btstack_linked_list_remove(&hci_stack->le_whitelist, (btstack_linked_item_t *) entry); 4488 btstack_memory_whitelist_entry_free(entry); 4489 } 4490 } 4491 #endif 4492 #endif 4493 // close all open connections 4494 connection = (hci_connection_t *) hci_stack->connections; 4495 if (connection){ 4496 hci_con_handle_t con_handle = (uint16_t) connection->con_handle; 4497 if (!hci_can_send_command_packet_now()) return; 4498 4499 // check state 4500 if (connection->state == SENT_DISCONNECT) return; 4501 connection->state = SENT_DISCONNECT; 4502 4503 log_info("HCI_STATE_HALTING, connection %p, handle %u", connection, con_handle); 4504 4505 // cancel all l2cap connections right away instead of waiting for disconnection complete event ... 4506 hci_emit_disconnection_complete(con_handle, 0x16); // terminated by local host 4507 4508 // ... which would be ignored anyway as we shutdown (free) the connection now 4509 hci_shutdown_connection(connection); 4510 4511 // finally, send the disconnect command 4512 hci_send_cmd(&hci_disconnect, con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4513 return; 4514 } 4515 4516 if (hci_stack->substate == HCI_HALTING_DISCONNECT_ALL_TIMER){ 4517 // no connections left, wait a bit to assert that btstack_cyrpto isn't waiting for an HCI event 4518 log_info("HCI_STATE_HALTING: wait 50 ms"); 4519 hci_stack->substate = HCI_HALTING_W4_TIMER; 4520 btstack_run_loop_set_timer(&hci_stack->timeout, 50); 4521 btstack_run_loop_set_timer_handler(&hci_stack->timeout, hci_halting_timeout_handler); 4522 btstack_run_loop_add_timer(&hci_stack->timeout); 4523 break; 4524 } 4525 4526 /* fall through */ 4527 4528 case HCI_HALTING_CLOSE: 4529 log_info("HCI_STATE_HALTING, calling off"); 4530 4531 // switch mode 4532 hci_power_control_off(); 4533 4534 log_info("HCI_STATE_HALTING, emitting state"); 4535 hci_emit_state(); 4536 log_info("HCI_STATE_HALTING, done"); 4537 break; 4538 4539 case HCI_HALTING_W4_TIMER: 4540 // keep waiting 4541 4542 break; 4543 default: 4544 break; 4545 } 4546 4547 break; 4548 4549 case HCI_STATE_FALLING_ASLEEP: 4550 switch(hci_stack->substate) { 4551 case HCI_FALLING_ASLEEP_DISCONNECT: 4552 log_info("HCI_STATE_FALLING_ASLEEP"); 4553 // close all open connections 4554 connection = (hci_connection_t *) hci_stack->connections; 4555 4556 #ifdef HAVE_PLATFORM_IPHONE_OS 4557 // don't close connections, if H4 supports power management 4558 if (btstack_control_iphone_power_management_enabled()){ 4559 connection = NULL; 4560 } 4561 #endif 4562 if (connection){ 4563 4564 // send disconnect 4565 if (!hci_can_send_command_packet_now()) return; 4566 4567 log_info("HCI_STATE_FALLING_ASLEEP, connection %p, handle %u", connection, (uint16_t)connection->con_handle); 4568 hci_send_cmd(&hci_disconnect, connection->con_handle, ERROR_CODE_REMOTE_USER_TERMINATED_CONNECTION); 4569 4570 // send disconnected event right away - causes higher layer connections to get closed, too. 4571 hci_shutdown_connection(connection); 4572 return; 4573 } 4574 4575 if (hci_classic_supported()){ 4576 // disable page and inquiry scan 4577 if (!hci_can_send_command_packet_now()) return; 4578 4579 log_info("HCI_STATE_HALTING, disabling inq scans"); 4580 hci_send_cmd(&hci_write_scan_enable, hci_stack->connectable << 1); // drop inquiry scan but keep page scan 4581 4582 // continue in next sub state 4583 hci_stack->substate = HCI_FALLING_ASLEEP_W4_WRITE_SCAN_ENABLE; 4584 break; 4585 } 4586 4587 /* fall through */ 4588 4589 case HCI_FALLING_ASLEEP_COMPLETE: 4590 log_info("HCI_STATE_HALTING, calling sleep"); 4591 #ifdef HAVE_PLATFORM_IPHONE_OS 4592 // don't actually go to sleep, if H4 supports power management 4593 if (btstack_control_iphone_power_management_enabled()){ 4594 // SLEEP MODE reached 4595 hci_stack->state = HCI_STATE_SLEEPING; 4596 hci_emit_state(); 4597 break; 4598 } 4599 #endif 4600 // switch mode 4601 hci_power_control_sleep(); // changes hci_stack->state to SLEEP 4602 hci_emit_state(); 4603 break; 4604 4605 default: 4606 break; 4607 } 4608 break; 4609 4610 default: 4611 break; 4612 } 4613 } 4614 4615 int hci_send_cmd_packet(uint8_t *packet, int size){ 4616 // house-keeping 4617 4618 #ifdef ENABLE_CLASSIC 4619 bd_addr_t addr; 4620 hci_connection_t * conn; 4621 #endif 4622 #ifdef ENABLE_LE_CENTRAL 4623 uint8_t initiator_filter_policy; 4624 #endif 4625 4626 uint16_t opcode = little_endian_read_16(packet, 0); 4627 switch (opcode) { 4628 case HCI_OPCODE_HCI_WRITE_LOOPBACK_MODE: 4629 hci_stack->loopback_mode = packet[3]; 4630 break; 4631 4632 #ifdef ENABLE_CLASSIC 4633 case HCI_OPCODE_HCI_CREATE_CONNECTION: 4634 reverse_bd_addr(&packet[3], addr); 4635 log_info("Create_connection to %s", bd_addr_to_str(addr)); 4636 4637 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4638 if (!conn) { 4639 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4640 if (!conn) { 4641 // notify client that alloc failed 4642 hci_emit_connection_complete(addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 4643 return -1; // packet not sent to controller 4644 } 4645 conn->state = SEND_CREATE_CONNECTION; 4646 conn->role = HCI_ROLE_MASTER; 4647 } 4648 log_info("conn state %u", conn->state); 4649 switch (conn->state) { 4650 // if connection active exists 4651 case OPEN: 4652 // and OPEN, emit connection complete command 4653 hci_emit_connection_complete(addr, conn->con_handle, 0); 4654 return -1; // packet not sent to controller 4655 case RECEIVED_DISCONNECTION_COMPLETE: 4656 // create connection triggered in disconnect complete event, let's do it now 4657 break; 4658 case SEND_CREATE_CONNECTION: 4659 // connection created by hci, e.g. dedicated bonding, but not executed yet, let's do it now 4660 break; 4661 default: 4662 // otherwise, just ignore as it is already in the open process 4663 return -1; // packet not sent to controller 4664 } 4665 conn->state = SENT_CREATE_CONNECTION; 4666 4667 // track outgoing connection 4668 hci_stack->outgoing_addr_type = BD_ADDR_TYPE_ACL; 4669 (void) memcpy(hci_stack->outgoing_addr, addr, 6); 4670 break; 4671 case HCI_OPCODE_HCI_LINK_KEY_REQUEST_REPLY: 4672 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_REPLY); 4673 break; 4674 case HCI_OPCODE_HCI_LINK_KEY_REQUEST_NEGATIVE_REPLY: 4675 hci_add_connection_flags_for_flipped_bd_addr(&packet[3], SENT_LINK_KEY_NEGATIVE_REQUEST); 4676 break; 4677 case HCI_OPCODE_HCI_DELETE_STORED_LINK_KEY: 4678 if (hci_stack->link_key_db) { 4679 reverse_bd_addr(&packet[3], addr); 4680 hci_stack->link_key_db->delete_link_key(addr); 4681 } 4682 break; 4683 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_NEGATIVE_REPLY: 4684 case HCI_OPCODE_HCI_PIN_CODE_REQUEST_REPLY: 4685 reverse_bd_addr(&packet[3], addr); 4686 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4687 if (conn) { 4688 connectionClearAuthenticationFlags(conn, LEGACY_PAIRING_ACTIVE); 4689 } 4690 break; 4691 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_NEGATIVE_REPLY: 4692 case HCI_OPCODE_HCI_USER_CONFIRMATION_REQUEST_REPLY: 4693 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_NEGATIVE_REPLY: 4694 case HCI_OPCODE_HCI_USER_PASSKEY_REQUEST_REPLY: 4695 reverse_bd_addr(&packet[3], addr); 4696 conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 4697 if (conn) { 4698 connectionClearAuthenticationFlags(conn, SSP_PAIRING_ACTIVE); 4699 } 4700 break; 4701 4702 #ifdef ENABLE_SCO_OVER_HCI 4703 case HCI_OPCODE_HCI_SETUP_SYNCHRONOUS_CONNECTION: 4704 // setup_synchronous_connection? Voice setting at offset 22 4705 // TODO: compare to current setting if sco connection already active 4706 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 15); 4707 break; 4708 case HCI_OPCODE_HCI_ACCEPT_SYNCHRONOUS_CONNECTION: 4709 // accept_synchronus_connection? Voice setting at offset 18 4710 // TODO: compare to current setting if sco connection already active 4711 hci_stack->sco_voice_setting_active = little_endian_read_16(packet, 19); 4712 break; 4713 #endif 4714 #endif 4715 4716 #ifdef ENABLE_BLE 4717 case HCI_OPCODE_HCI_LE_SET_RANDOM_ADDRESS: 4718 hci_stack->le_random_address_set = 1; 4719 reverse_bd_addr(&packet[3], hci_stack->le_random_address); 4720 break; 4721 #ifdef ENABLE_LE_PERIPHERAL 4722 case HCI_OPCODE_HCI_LE_SET_ADVERTISE_ENABLE: 4723 hci_stack->le_advertisements_active = packet[3] != 0; 4724 break; 4725 #endif 4726 #ifdef ENABLE_LE_CENTRAL 4727 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION: 4728 // white list used? 4729 initiator_filter_policy = packet[7]; 4730 switch (initiator_filter_policy) { 4731 case 0: 4732 // whitelist not used 4733 hci_stack->le_connecting_state = LE_CONNECTING_DIRECT; 4734 break; 4735 case 1: 4736 hci_stack->le_connecting_state = LE_CONNECTING_WHITELIST; 4737 break; 4738 default: 4739 log_error("Invalid initiator_filter_policy in LE Create Connection %u", initiator_filter_policy); 4740 break; 4741 } 4742 // track outgoing connection 4743 hci_stack->outgoing_addr_type = (bd_addr_type_t) packet[8]; // peer addres type 4744 reverse_bd_addr( &packet[9], hci_stack->outgoing_addr); // peer address 4745 break; 4746 case HCI_OPCODE_HCI_LE_CREATE_CONNECTION_CANCEL: 4747 hci_stack->le_connecting_state = LE_CONNECTING_CANCEL; 4748 break; 4749 #endif 4750 #endif 4751 default: 4752 break; 4753 } 4754 4755 hci_stack->num_cmd_packets--; 4756 4757 hci_dump_packet(HCI_COMMAND_DATA_PACKET, 0, packet, size); 4758 return hci_stack->hci_transport->send_packet(HCI_COMMAND_DATA_PACKET, packet, size); 4759 } 4760 4761 // disconnect because of security block 4762 void hci_disconnect_security_block(hci_con_handle_t con_handle){ 4763 hci_connection_t * connection = hci_connection_for_handle(con_handle); 4764 if (!connection) return; 4765 connection->bonding_flags |= BONDING_DISCONNECT_SECURITY_BLOCK; 4766 } 4767 4768 4769 // Configure Secure Simple Pairing 4770 4771 #ifdef ENABLE_CLASSIC 4772 4773 // enable will enable SSP during init 4774 void gap_ssp_set_enable(int enable){ 4775 hci_stack->ssp_enable = enable; 4776 } 4777 4778 static int hci_local_ssp_activated(void){ 4779 return gap_ssp_supported() && hci_stack->ssp_enable; 4780 } 4781 4782 // if set, BTstack will respond to io capability request using authentication requirement 4783 void gap_ssp_set_io_capability(int io_capability){ 4784 hci_stack->ssp_io_capability = io_capability; 4785 } 4786 void gap_ssp_set_authentication_requirement(int authentication_requirement){ 4787 hci_stack->ssp_authentication_requirement = authentication_requirement; 4788 } 4789 4790 // if set, BTstack will confirm a numberic comparion and enter '000000' if requested 4791 void gap_ssp_set_auto_accept(int auto_accept){ 4792 hci_stack->ssp_auto_accept = auto_accept; 4793 } 4794 4795 void gap_secure_connections_enable(bool enable){ 4796 hci_stack->secure_connections_enable = enable; 4797 } 4798 4799 #endif 4800 4801 // va_list part of hci_send_cmd 4802 int hci_send_cmd_va_arg(const hci_cmd_t *cmd, va_list argptr){ 4803 if (!hci_can_send_command_packet_now()){ 4804 log_error("hci_send_cmd called but cannot send packet now"); 4805 return 0; 4806 } 4807 4808 // for HCI INITIALIZATION 4809 // log_info("hci_send_cmd: opcode %04x", cmd->opcode); 4810 hci_stack->last_cmd_opcode = cmd->opcode; 4811 4812 hci_reserve_packet_buffer(); 4813 uint8_t * packet = hci_stack->hci_packet_buffer; 4814 uint16_t size = hci_cmd_create_from_template(packet, cmd, argptr); 4815 int err = hci_send_cmd_packet(packet, size); 4816 4817 // release packet buffer on error or for synchronous transport implementations 4818 if ((err < 0) || hci_transport_synchronous()){ 4819 hci_release_packet_buffer(); 4820 hci_emit_transport_packet_sent(); 4821 } 4822 4823 return err; 4824 } 4825 4826 /** 4827 * pre: numcmds >= 0 - it's allowed to send a command to the controller 4828 */ 4829 int hci_send_cmd(const hci_cmd_t *cmd, ...){ 4830 va_list argptr; 4831 va_start(argptr, cmd); 4832 int res = hci_send_cmd_va_arg(cmd, argptr); 4833 va_end(argptr); 4834 return res; 4835 } 4836 4837 // Create various non-HCI events. 4838 // TODO: generalize, use table similar to hci_create_command 4839 4840 static void hci_emit_event(uint8_t * event, uint16_t size, int dump){ 4841 // dump packet 4842 if (dump) { 4843 hci_dump_packet( HCI_EVENT_PACKET, 0, event, size); 4844 } 4845 4846 // dispatch to all event handlers 4847 btstack_linked_list_iterator_t it; 4848 btstack_linked_list_iterator_init(&it, &hci_stack->event_handlers); 4849 while (btstack_linked_list_iterator_has_next(&it)){ 4850 btstack_packet_callback_registration_t * entry = (btstack_packet_callback_registration_t*) btstack_linked_list_iterator_next(&it); 4851 entry->callback(HCI_EVENT_PACKET, 0, event, size); 4852 } 4853 } 4854 4855 static void hci_emit_acl_packet(uint8_t * packet, uint16_t size){ 4856 if (!hci_stack->acl_packet_handler) return; 4857 hci_stack->acl_packet_handler(HCI_ACL_DATA_PACKET, 0, packet, size); 4858 } 4859 4860 #ifdef ENABLE_CLASSIC 4861 static void hci_notify_if_sco_can_send_now(void){ 4862 // notify SCO sender if waiting 4863 if (!hci_stack->sco_waiting_for_can_send_now) return; 4864 if (hci_can_send_sco_packet_now()){ 4865 hci_stack->sco_waiting_for_can_send_now = 0; 4866 uint8_t event[2] = { HCI_EVENT_SCO_CAN_SEND_NOW, 0 }; 4867 hci_dump_packet(HCI_EVENT_PACKET, 1, event, sizeof(event)); 4868 hci_stack->sco_packet_handler(HCI_EVENT_PACKET, 0, event, sizeof(event)); 4869 } 4870 } 4871 4872 // parsing end emitting has been merged to reduce code size 4873 static void gap_inquiry_explode(uint8_t *packet, uint16_t size) { 4874 uint8_t event[19+GAP_INQUIRY_MAX_NAME_LEN]; 4875 4876 uint8_t * eir_data; 4877 ad_context_t context; 4878 const uint8_t * name; 4879 uint8_t name_len; 4880 4881 if (size < 3) return; 4882 4883 int event_type = hci_event_packet_get_type(packet); 4884 int num_reserved_fields = (event_type == HCI_EVENT_INQUIRY_RESULT) ? 2 : 1; // 2 for old event, 1 otherwise 4885 int num_responses = hci_event_inquiry_result_get_num_responses(packet); 4886 4887 switch (event_type){ 4888 case HCI_EVENT_INQUIRY_RESULT: 4889 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4890 if (size != (3 + (num_responses * 14))) return; 4891 break; 4892 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4893 if (size != 257) return; 4894 if (num_responses != 1) return; 4895 break; 4896 default: 4897 return; 4898 } 4899 4900 // event[1] is set at the end 4901 int i; 4902 for (i=0; i<num_responses;i++){ 4903 memset(event, 0, sizeof(event)); 4904 event[0] = GAP_EVENT_INQUIRY_RESULT; 4905 uint8_t event_size = 18; // if name is not set by EIR 4906 4907 (void)memcpy(&event[2], &packet[3 + (i * 6)], 6); // bd_addr 4908 event[8] = packet[3 + (num_responses*(6)) + (i*1)]; // page_scan_repetition_mode 4909 (void)memcpy(&event[9], 4910 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields)) + (i * 3)], 4911 3); // class of device 4912 (void)memcpy(&event[12], 4913 &packet[3 + (num_responses * (6 + 1 + num_reserved_fields + 3)) + (i * 2)], 4914 2); // clock offset 4915 4916 switch (event_type){ 4917 case HCI_EVENT_INQUIRY_RESULT: 4918 // 14,15,16,17 = 0, size 18 4919 break; 4920 case HCI_EVENT_INQUIRY_RESULT_WITH_RSSI: 4921 event[14] = 1; 4922 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 4923 // 16,17 = 0, size 18 4924 break; 4925 case HCI_EVENT_EXTENDED_INQUIRY_RESPONSE: 4926 event[14] = 1; 4927 event[15] = packet [3 + (num_responses*(6+1+num_reserved_fields+3+2)) + (i*1)]; // rssi 4928 // EIR packets only contain a single inquiry response 4929 eir_data = &packet[3 + (6+1+num_reserved_fields+3+2+1)]; 4930 name = NULL; 4931 // Iterate over EIR data 4932 for (ad_iterator_init(&context, EXTENDED_INQUIRY_RESPONSE_DATA_LEN, eir_data) ; ad_iterator_has_more(&context) ; ad_iterator_next(&context)){ 4933 uint8_t data_type = ad_iterator_get_data_type(&context); 4934 uint8_t data_size = ad_iterator_get_data_len(&context); 4935 const uint8_t * data = ad_iterator_get_data(&context); 4936 // Prefer Complete Local Name over Shortend Local Name 4937 switch (data_type){ 4938 case BLUETOOTH_DATA_TYPE_SHORTENED_LOCAL_NAME: 4939 if (name) continue; 4940 /* fall through */ 4941 case BLUETOOTH_DATA_TYPE_COMPLETE_LOCAL_NAME: 4942 name = data; 4943 name_len = data_size; 4944 break; 4945 default: 4946 break; 4947 } 4948 } 4949 if (name){ 4950 event[16] = 1; 4951 // truncate name if needed 4952 int len = btstack_min(name_len, GAP_INQUIRY_MAX_NAME_LEN); 4953 event[17] = len; 4954 (void)memcpy(&event[18], name, len); 4955 event_size += len; 4956 } 4957 break; 4958 default: 4959 return; 4960 } 4961 event[1] = event_size - 2; 4962 hci_emit_event(event, event_size, 1); 4963 } 4964 } 4965 #endif 4966 4967 void hci_emit_state(void){ 4968 log_info("BTSTACK_EVENT_STATE %u", hci_stack->state); 4969 uint8_t event[3]; 4970 event[0] = BTSTACK_EVENT_STATE; 4971 event[1] = sizeof(event) - 2u; 4972 event[2] = hci_stack->state; 4973 hci_emit_event(event, sizeof(event), 1); 4974 } 4975 4976 #ifdef ENABLE_CLASSIC 4977 static void hci_emit_connection_complete(bd_addr_t address, hci_con_handle_t con_handle, uint8_t status){ 4978 uint8_t event[13]; 4979 event[0] = HCI_EVENT_CONNECTION_COMPLETE; 4980 event[1] = sizeof(event) - 2; 4981 event[2] = status; 4982 little_endian_store_16(event, 3, con_handle); 4983 reverse_bd_addr(address, &event[5]); 4984 event[11] = 1; // ACL connection 4985 event[12] = 0; // encryption disabled 4986 hci_emit_event(event, sizeof(event), 1); 4987 } 4988 static void hci_emit_l2cap_check_timeout(hci_connection_t *conn){ 4989 if (disable_l2cap_timeouts) return; 4990 log_info("L2CAP_EVENT_TIMEOUT_CHECK"); 4991 uint8_t event[4]; 4992 event[0] = L2CAP_EVENT_TIMEOUT_CHECK; 4993 event[1] = sizeof(event) - 2; 4994 little_endian_store_16(event, 2, conn->con_handle); 4995 hci_emit_event(event, sizeof(event), 1); 4996 } 4997 #endif 4998 4999 #ifdef ENABLE_BLE 5000 #ifdef ENABLE_LE_CENTRAL 5001 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){ 5002 uint8_t event[21]; 5003 event[0] = HCI_EVENT_LE_META; 5004 event[1] = sizeof(event) - 2u; 5005 event[2] = HCI_SUBEVENT_LE_CONNECTION_COMPLETE; 5006 event[3] = status; 5007 little_endian_store_16(event, 4, con_handle); 5008 event[6] = 0; // TODO: role 5009 event[7] = address_type; 5010 reverse_bd_addr(address, &event[8]); 5011 little_endian_store_16(event, 14, 0); // interval 5012 little_endian_store_16(event, 16, 0); // latency 5013 little_endian_store_16(event, 18, 0); // supervision timeout 5014 event[20] = 0; // master clock accuracy 5015 hci_emit_event(event, sizeof(event), 1); 5016 } 5017 #endif 5018 #endif 5019 5020 static void hci_emit_transport_packet_sent(void){ 5021 // notify upper stack that it might be possible to send again 5022 uint8_t event[] = { HCI_EVENT_TRANSPORT_PACKET_SENT, 0}; 5023 hci_emit_event(&event[0], sizeof(event), 0); // don't dump 5024 } 5025 5026 static void hci_emit_disconnection_complete(hci_con_handle_t con_handle, uint8_t reason){ 5027 uint8_t event[6]; 5028 event[0] = HCI_EVENT_DISCONNECTION_COMPLETE; 5029 event[1] = sizeof(event) - 2u; 5030 event[2] = 0; // status = OK 5031 little_endian_store_16(event, 3, con_handle); 5032 event[5] = reason; 5033 hci_emit_event(event, sizeof(event), 1); 5034 } 5035 5036 static void hci_emit_nr_connections_changed(void){ 5037 log_info("BTSTACK_EVENT_NR_CONNECTIONS_CHANGED %u", nr_hci_connections()); 5038 uint8_t event[3]; 5039 event[0] = BTSTACK_EVENT_NR_CONNECTIONS_CHANGED; 5040 event[1] = sizeof(event) - 2u; 5041 event[2] = nr_hci_connections(); 5042 hci_emit_event(event, sizeof(event), 1); 5043 } 5044 5045 static void hci_emit_hci_open_failed(void){ 5046 log_info("BTSTACK_EVENT_POWERON_FAILED"); 5047 uint8_t event[2]; 5048 event[0] = BTSTACK_EVENT_POWERON_FAILED; 5049 event[1] = sizeof(event) - 2u; 5050 hci_emit_event(event, sizeof(event), 1); 5051 } 5052 5053 static void hci_emit_dedicated_bonding_result(bd_addr_t address, uint8_t status){ 5054 log_info("hci_emit_dedicated_bonding_result %u ", status); 5055 uint8_t event[9]; 5056 int pos = 0; 5057 event[pos++] = GAP_EVENT_DEDICATED_BONDING_COMPLETED; 5058 event[pos++] = sizeof(event) - 2u; 5059 event[pos++] = status; 5060 reverse_bd_addr(address, &event[pos]); 5061 hci_emit_event(event, sizeof(event), 1); 5062 } 5063 5064 5065 #ifdef ENABLE_CLASSIC 5066 5067 static void hci_emit_security_level(hci_con_handle_t con_handle, gap_security_level_t level){ 5068 log_info("hci_emit_security_level %u for handle %x", level, con_handle); 5069 uint8_t event[5]; 5070 int pos = 0; 5071 event[pos++] = GAP_EVENT_SECURITY_LEVEL; 5072 event[pos++] = sizeof(event) - 2; 5073 little_endian_store_16(event, 2, con_handle); 5074 pos += 2; 5075 event[pos++] = level; 5076 hci_emit_event(event, sizeof(event), 1); 5077 } 5078 5079 static gap_security_level_t gap_security_level_for_connection(hci_connection_t * connection){ 5080 if (!connection) return LEVEL_0; 5081 if ((connection->authentication_flags & CONNECTION_ENCRYPTED) == 0) return LEVEL_0; 5082 if ((connection->authentication_flags & CONNECTION_AUTHENTICATED) == 0) return LEVEL_0; 5083 if (connection->encryption_key_size < hci_stack->gap_required_encyrption_key_size) return LEVEL_0; 5084 gap_security_level_t security_level = gap_security_level_for_link_key_type(connection->link_key_type); 5085 // LEVEL 4 always requires 128 bit encrytion key size 5086 if ((security_level == LEVEL_4) && (connection->encryption_key_size < 16)){ 5087 security_level = LEVEL_3; 5088 } 5089 return security_level; 5090 } 5091 5092 static void hci_emit_discoverable_enabled(uint8_t enabled){ 5093 log_info("BTSTACK_EVENT_DISCOVERABLE_ENABLED %u", enabled); 5094 uint8_t event[3]; 5095 event[0] = BTSTACK_EVENT_DISCOVERABLE_ENABLED; 5096 event[1] = sizeof(event) - 2; 5097 event[2] = enabled; 5098 hci_emit_event(event, sizeof(event), 1); 5099 } 5100 5101 // query if remote side supports eSCO 5102 int hci_remote_esco_supported(hci_con_handle_t con_handle){ 5103 hci_connection_t * connection = hci_connection_for_handle(con_handle); 5104 if (!connection) return 0; 5105 return (connection->remote_supported_features[0] & 1) != 0; 5106 } 5107 5108 static bool hci_ssp_supported(hci_connection_t * connection){ 5109 const uint8_t mask = BONDING_REMOTE_SUPPORTS_SSP_CONTROLLER | BONDING_REMOTE_SUPPORTS_SSP_HOST; 5110 return (connection->bonding_flags & mask) == mask; 5111 } 5112 5113 // query if remote side supports SSP 5114 int hci_remote_ssp_supported(hci_con_handle_t con_handle){ 5115 hci_connection_t * connection = hci_connection_for_handle(con_handle); 5116 if (!connection) return 0; 5117 return hci_ssp_supported(connection) ? 1 : 0; 5118 } 5119 5120 int gap_ssp_supported_on_both_sides(hci_con_handle_t handle){ 5121 return hci_local_ssp_activated() && hci_remote_ssp_supported(handle); 5122 } 5123 5124 // GAP API 5125 /** 5126 * @bbrief enable/disable bonding. default is enabled 5127 * @praram enabled 5128 */ 5129 void gap_set_bondable_mode(int enable){ 5130 hci_stack->bondable = enable ? 1 : 0; 5131 } 5132 /** 5133 * @brief Get bondable mode. 5134 * @return 1 if bondable 5135 */ 5136 int gap_get_bondable_mode(void){ 5137 return hci_stack->bondable; 5138 } 5139 5140 /** 5141 * @brief map link keys to security levels 5142 */ 5143 gap_security_level_t gap_security_level_for_link_key_type(link_key_type_t link_key_type){ 5144 switch (link_key_type){ 5145 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 5146 return LEVEL_4; 5147 case COMBINATION_KEY: 5148 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 5149 return LEVEL_3; 5150 default: 5151 return LEVEL_2; 5152 } 5153 } 5154 5155 /** 5156 * @brief map link keys to secure connection yes/no 5157 */ 5158 int gap_secure_connection_for_link_key_type(link_key_type_t link_key_type){ 5159 switch (link_key_type){ 5160 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 5161 case UNAUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 5162 return 1; 5163 default: 5164 return 0; 5165 } 5166 } 5167 5168 /** 5169 * @brief map link keys to authenticated 5170 */ 5171 int gap_authenticated_for_link_key_type(link_key_type_t link_key_type){ 5172 switch (link_key_type){ 5173 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P256: 5174 case AUTHENTICATED_COMBINATION_KEY_GENERATED_FROM_P192: 5175 return 1; 5176 default: 5177 return 0; 5178 } 5179 } 5180 5181 int gap_mitm_protection_required_for_security_level(gap_security_level_t level){ 5182 log_info("gap_mitm_protection_required_for_security_level %u", level); 5183 return level > LEVEL_2; 5184 } 5185 5186 /** 5187 * @brief get current security level 5188 */ 5189 gap_security_level_t gap_security_level(hci_con_handle_t con_handle){ 5190 hci_connection_t * connection = hci_connection_for_handle(con_handle); 5191 if (!connection) return LEVEL_0; 5192 return gap_security_level_for_connection(connection); 5193 } 5194 5195 /** 5196 * @brief request connection to device to 5197 * @result GAP_AUTHENTICATION_RESULT 5198 */ 5199 void gap_request_security_level(hci_con_handle_t con_handle, gap_security_level_t requested_level){ 5200 hci_connection_t * connection = hci_connection_for_handle(con_handle); 5201 if (!connection){ 5202 hci_emit_security_level(con_handle, LEVEL_0); 5203 return; 5204 } 5205 5206 btstack_assert(hci_is_le_connection(connection) == false); 5207 5208 gap_security_level_t current_level = gap_security_level(con_handle); 5209 log_info("gap_request_security_level requested level %u, planned level %u, current level %u", 5210 requested_level, connection->requested_security_level, current_level); 5211 5212 // assumption: earlier requested security higher than current level => security request is active 5213 if (current_level < connection->requested_security_level){ 5214 if (connection->requested_security_level < requested_level){ 5215 // increase requested level as new level is higher 5216 5217 // TODO: handle re-authentication when done 5218 5219 connection->requested_security_level = requested_level; 5220 } 5221 return; 5222 } 5223 5224 // no request active, notify if security sufficient 5225 if (requested_level <= current_level){ 5226 hci_emit_security_level(con_handle, current_level); 5227 return; 5228 } 5229 5230 // store request 5231 connection->requested_security_level = requested_level; 5232 5233 // start to authenticate connection if authentication not already active 5234 if ((connection->bonding_flags & BONDING_SENT_AUTHENTICATE_REQUEST) != 0) return; 5235 connection->bonding_flags |= BONDING_SEND_AUTHENTICATE_REQUEST; 5236 hci_run(); 5237 } 5238 5239 /** 5240 * @brief start dedicated bonding with device. disconnect after bonding 5241 * @param device 5242 * @param request MITM protection 5243 * @result GAP_DEDICATED_BONDING_COMPLETE 5244 */ 5245 int gap_dedicated_bonding(bd_addr_t device, int mitm_protection_required){ 5246 5247 // create connection state machine 5248 hci_connection_t * connection = create_connection_for_bd_addr_and_type(device, BD_ADDR_TYPE_ACL); 5249 5250 if (!connection){ 5251 return BTSTACK_MEMORY_ALLOC_FAILED; 5252 } 5253 5254 // delete linkn key 5255 gap_drop_link_key_for_bd_addr(device); 5256 5257 // configure LEVEL_2/3, dedicated bonding 5258 connection->state = SEND_CREATE_CONNECTION; 5259 connection->requested_security_level = mitm_protection_required ? LEVEL_3 : LEVEL_2; 5260 log_info("gap_dedicated_bonding, mitm %d -> level %u", mitm_protection_required, connection->requested_security_level); 5261 connection->bonding_flags = BONDING_DEDICATED; 5262 5263 // wait for GAP Security Result and send GAP Dedicated Bonding complete 5264 5265 // handle: connnection failure (connection complete != ok) 5266 // handle: authentication failure 5267 // handle: disconnect on done 5268 5269 hci_run(); 5270 5271 return 0; 5272 } 5273 #endif 5274 5275 void gap_set_local_name(const char * local_name){ 5276 hci_stack->local_name = local_name; 5277 } 5278 5279 5280 #ifdef ENABLE_BLE 5281 5282 #ifdef ENABLE_LE_CENTRAL 5283 void gap_start_scan(void){ 5284 hci_stack->le_scanning_enabled = true; 5285 hci_run(); 5286 } 5287 5288 void gap_stop_scan(void){ 5289 hci_stack->le_scanning_enabled = false; 5290 hci_run(); 5291 } 5292 5293 void gap_set_scan_params(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window, uint8_t scanning_filter_policy){ 5294 hci_stack->le_scan_type = scan_type; 5295 hci_stack->le_scan_filter_policy = scanning_filter_policy; 5296 hci_stack->le_scan_interval = scan_interval; 5297 hci_stack->le_scan_window = scan_window; 5298 hci_stack->le_scanning_param_update = true; 5299 hci_run(); 5300 } 5301 5302 void gap_set_scan_parameters(uint8_t scan_type, uint16_t scan_interval, uint16_t scan_window){ 5303 gap_set_scan_params(scan_type, scan_interval, scan_window, 0); 5304 } 5305 5306 uint8_t gap_connect(const bd_addr_t addr, bd_addr_type_t addr_type){ 5307 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, addr_type); 5308 if (!conn){ 5309 // disallow if le connection is already outgoing 5310 if (hci_is_le_connection_type(addr_type) && hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 5311 log_error("le connection already active"); 5312 return ERROR_CODE_COMMAND_DISALLOWED; 5313 } 5314 5315 log_info("gap_connect: no connection exists yet, creating context"); 5316 conn = create_connection_for_bd_addr_and_type(addr, addr_type); 5317 if (!conn){ 5318 // notify client that alloc failed 5319 hci_emit_le_connection_complete(addr_type, addr, 0, BTSTACK_MEMORY_ALLOC_FAILED); 5320 log_info("gap_connect: failed to alloc hci_connection_t"); 5321 return GATT_CLIENT_NOT_CONNECTED; // don't sent packet to controller 5322 } 5323 5324 // set le connecting state 5325 if (hci_is_le_connection_type(addr_type)){ 5326 hci_stack->le_connecting_request = LE_CONNECTING_DIRECT; 5327 } 5328 5329 conn->state = SEND_CREATE_CONNECTION; 5330 log_info("gap_connect: send create connection next"); 5331 hci_run(); 5332 return ERROR_CODE_SUCCESS; 5333 } 5334 5335 if (!hci_is_le_connection(conn) || 5336 (conn->state == SEND_CREATE_CONNECTION) || 5337 (conn->state == SENT_CREATE_CONNECTION)) { 5338 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_COMMAND_DISALLOWED); 5339 log_error("gap_connect: classic connection or connect is already being created"); 5340 return GATT_CLIENT_IN_WRONG_STATE; 5341 } 5342 5343 // check if connection was just disconnected 5344 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 5345 log_info("gap_connect: send create connection (again)"); 5346 conn->state = SEND_CREATE_CONNECTION; 5347 hci_run(); 5348 return ERROR_CODE_SUCCESS; 5349 } 5350 5351 log_info("gap_connect: context exists with state %u", conn->state); 5352 hci_emit_le_connection_complete(conn->address_type, conn->address, conn->con_handle, ERROR_CODE_SUCCESS); 5353 hci_run(); 5354 return ERROR_CODE_SUCCESS; 5355 } 5356 5357 // @assumption: only a single outgoing LE Connection exists 5358 static hci_connection_t * gap_get_outgoing_connection(void){ 5359 btstack_linked_item_t *it; 5360 for (it = (btstack_linked_item_t *) hci_stack->connections; it != NULL; it = it->next){ 5361 hci_connection_t * conn = (hci_connection_t *) it; 5362 if (!hci_is_le_connection(conn)) continue; 5363 switch (conn->state){ 5364 case SEND_CREATE_CONNECTION: 5365 case SENT_CREATE_CONNECTION: 5366 case SENT_CANCEL_CONNECTION: 5367 return conn; 5368 default: 5369 break; 5370 }; 5371 } 5372 return NULL; 5373 } 5374 5375 uint8_t gap_connect_cancel(void){ 5376 hci_connection_t * conn = gap_get_outgoing_connection(); 5377 if (!conn) return 0; 5378 switch (conn->state){ 5379 case SEND_CREATE_CONNECTION: 5380 // skip sending create connection and emit event instead 5381 hci_emit_le_connection_complete(conn->address_type, conn->address, 0, ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER); 5382 btstack_linked_list_remove(&hci_stack->connections, (btstack_linked_item_t *) conn); 5383 btstack_memory_hci_connection_free( conn ); 5384 break; 5385 case SENT_CREATE_CONNECTION: 5386 // request to send cancel connection 5387 conn->state = SEND_CANCEL_CONNECTION; 5388 hci_run(); 5389 break; 5390 default: 5391 break; 5392 } 5393 return 0; 5394 } 5395 #endif 5396 5397 #ifdef ENABLE_LE_CENTRAL 5398 /** 5399 * @brief Set connection parameters for outgoing connections 5400 * @param conn_scan_interval (unit: 0.625 msec), default: 60 ms 5401 * @param conn_scan_window (unit: 0.625 msec), default: 30 ms 5402 * @param conn_interval_min (unit: 1.25ms), default: 10 ms 5403 * @param conn_interval_max (unit: 1.25ms), default: 30 ms 5404 * @param conn_latency, default: 4 5405 * @param supervision_timeout (unit: 10ms), default: 720 ms 5406 * @param min_ce_length (unit: 0.625ms), default: 10 ms 5407 * @param max_ce_length (unit: 0.625ms), default: 30 ms 5408 */ 5409 5410 void gap_set_connection_parameters(uint16_t conn_scan_interval, uint16_t conn_scan_window, 5411 uint16_t conn_interval_min, uint16_t conn_interval_max, uint16_t conn_latency, 5412 uint16_t supervision_timeout, uint16_t min_ce_length, uint16_t max_ce_length){ 5413 hci_stack->le_connection_scan_interval = conn_scan_interval; 5414 hci_stack->le_connection_scan_window = conn_scan_window; 5415 hci_stack->le_connection_interval_min = conn_interval_min; 5416 hci_stack->le_connection_interval_max = conn_interval_max; 5417 hci_stack->le_connection_latency = conn_latency; 5418 hci_stack->le_supervision_timeout = supervision_timeout; 5419 hci_stack->le_minimum_ce_length = min_ce_length; 5420 hci_stack->le_maximum_ce_length = max_ce_length; 5421 } 5422 #endif 5423 5424 /** 5425 * @brief Updates the connection parameters for a given LE connection 5426 * @param handle 5427 * @param conn_interval_min (unit: 1.25ms) 5428 * @param conn_interval_max (unit: 1.25ms) 5429 * @param conn_latency 5430 * @param supervision_timeout (unit: 10ms) 5431 * @returns 0 if ok 5432 */ 5433 int gap_update_connection_parameters(hci_con_handle_t con_handle, uint16_t conn_interval_min, 5434 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 5435 hci_connection_t * connection = hci_connection_for_handle(con_handle); 5436 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 5437 connection->le_conn_interval_min = conn_interval_min; 5438 connection->le_conn_interval_max = conn_interval_max; 5439 connection->le_conn_latency = conn_latency; 5440 connection->le_supervision_timeout = supervision_timeout; 5441 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_CHANGE_HCI_CON_PARAMETERS; 5442 hci_run(); 5443 return 0; 5444 } 5445 5446 /** 5447 * @brief Request an update of the connection parameter for a given LE connection 5448 * @param handle 5449 * @param conn_interval_min (unit: 1.25ms) 5450 * @param conn_interval_max (unit: 1.25ms) 5451 * @param conn_latency 5452 * @param supervision_timeout (unit: 10ms) 5453 * @returns 0 if ok 5454 */ 5455 int gap_request_connection_parameter_update(hci_con_handle_t con_handle, uint16_t conn_interval_min, 5456 uint16_t conn_interval_max, uint16_t conn_latency, uint16_t supervision_timeout){ 5457 hci_connection_t * connection = hci_connection_for_handle(con_handle); 5458 if (!connection) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 5459 connection->le_conn_interval_min = conn_interval_min; 5460 connection->le_conn_interval_max = conn_interval_max; 5461 connection->le_conn_latency = conn_latency; 5462 connection->le_supervision_timeout = supervision_timeout; 5463 connection->le_con_parameter_update_state = CON_PARAMETER_UPDATE_SEND_REQUEST; 5464 uint8_t l2cap_trigger_run_event[2] = { L2CAP_EVENT_TRIGGER_RUN, 0}; 5465 hci_emit_event(l2cap_trigger_run_event, sizeof(l2cap_trigger_run_event), 0); 5466 return 0; 5467 } 5468 5469 #ifdef ENABLE_LE_PERIPHERAL 5470 5471 /** 5472 * @brief Set Advertisement Data 5473 * @param advertising_data_length 5474 * @param advertising_data (max 31 octets) 5475 * @note data is not copied, pointer has to stay valid 5476 */ 5477 void gap_advertisements_set_data(uint8_t advertising_data_length, uint8_t * advertising_data){ 5478 hci_stack->le_advertisements_data_len = advertising_data_length; 5479 hci_stack->le_advertisements_data = advertising_data; 5480 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_ADV_DATA; 5481 hci_run(); 5482 } 5483 5484 /** 5485 * @brief Set Scan Response Data 5486 * @param advertising_data_length 5487 * @param advertising_data (max 31 octets) 5488 * @note data is not copied, pointer has to stay valid 5489 */ 5490 void gap_scan_response_set_data(uint8_t scan_response_data_length, uint8_t * scan_response_data){ 5491 hci_stack->le_scan_response_data_len = scan_response_data_length; 5492 hci_stack->le_scan_response_data = scan_response_data; 5493 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_SCAN_DATA; 5494 hci_run(); 5495 } 5496 5497 /** 5498 * @brief Set Advertisement Parameters 5499 * @param adv_int_min 5500 * @param adv_int_max 5501 * @param adv_type 5502 * @param direct_address_type 5503 * @param direct_address 5504 * @param channel_map 5505 * @param filter_policy 5506 * 5507 * @note internal use. use gap_advertisements_set_params from gap_le.h instead. 5508 */ 5509 void hci_le_advertisements_set_params(uint16_t adv_int_min, uint16_t adv_int_max, uint8_t adv_type, 5510 uint8_t direct_address_typ, bd_addr_t direct_address, 5511 uint8_t channel_map, uint8_t filter_policy) { 5512 5513 hci_stack->le_advertisements_interval_min = adv_int_min; 5514 hci_stack->le_advertisements_interval_max = adv_int_max; 5515 hci_stack->le_advertisements_type = adv_type; 5516 hci_stack->le_advertisements_direct_address_type = direct_address_typ; 5517 hci_stack->le_advertisements_channel_map = channel_map; 5518 hci_stack->le_advertisements_filter_policy = filter_policy; 5519 (void)memcpy(hci_stack->le_advertisements_direct_address, direct_address, 5520 6); 5521 5522 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5523 hci_run(); 5524 } 5525 5526 /** 5527 * @brief Enable/Disable Advertisements 5528 * @param enabled 5529 */ 5530 void gap_advertisements_enable(int enabled){ 5531 hci_stack->le_advertisements_enabled = enabled != 0; 5532 hci_update_advertisements_enabled_for_current_roles(); 5533 hci_run(); 5534 } 5535 5536 #endif 5537 5538 void hci_le_set_own_address_type(uint8_t own_address_type){ 5539 log_info("hci_le_set_own_address_type: old %u, new %u", hci_stack->le_own_addr_type, own_address_type); 5540 if (own_address_type == hci_stack->le_own_addr_type) return; 5541 hci_stack->le_own_addr_type = own_address_type; 5542 5543 #ifdef ENABLE_LE_PERIPHERAL 5544 // update advertisement parameters, too 5545 hci_stack->le_advertisements_todo |= LE_ADVERTISEMENT_TASKS_SET_PARAMS; 5546 hci_run(); 5547 #endif 5548 #ifdef ENABLE_LE_CENTRAL 5549 // note: we don't update scan parameters or modify ongoing connection attempts 5550 #endif 5551 } 5552 5553 #endif 5554 5555 uint8_t gap_disconnect(hci_con_handle_t handle){ 5556 hci_connection_t * conn = hci_connection_for_handle(handle); 5557 if (!conn){ 5558 hci_emit_disconnection_complete(handle, 0); 5559 return 0; 5560 } 5561 // ignore if already disconnected 5562 if (conn->state == RECEIVED_DISCONNECTION_COMPLETE){ 5563 return 0; 5564 } 5565 conn->state = SEND_DISCONNECT; 5566 hci_run(); 5567 return 0; 5568 } 5569 5570 int gap_read_rssi(hci_con_handle_t con_handle){ 5571 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 5572 if (hci_connection == NULL) return 0; 5573 connectionSetAuthenticationFlags(hci_connection, READ_RSSI); 5574 hci_run(); 5575 return 1; 5576 } 5577 5578 /** 5579 * @brief Get connection type 5580 * @param con_handle 5581 * @result connection_type 5582 */ 5583 gap_connection_type_t gap_get_connection_type(hci_con_handle_t connection_handle){ 5584 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 5585 if (!conn) return GAP_CONNECTION_INVALID; 5586 switch (conn->address_type){ 5587 case BD_ADDR_TYPE_LE_PUBLIC: 5588 case BD_ADDR_TYPE_LE_RANDOM: 5589 return GAP_CONNECTION_LE; 5590 case BD_ADDR_TYPE_SCO: 5591 return GAP_CONNECTION_SCO; 5592 case BD_ADDR_TYPE_ACL: 5593 return GAP_CONNECTION_ACL; 5594 default: 5595 return GAP_CONNECTION_INVALID; 5596 } 5597 } 5598 5599 hci_role_t gap_get_role(hci_con_handle_t connection_handle){ 5600 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 5601 if (!conn) return HCI_ROLE_INVALID; 5602 return (hci_role_t) conn->role; 5603 } 5604 5605 5606 #ifdef ENABLE_CLASSIC 5607 uint8_t gap_request_role(const bd_addr_t addr, hci_role_t role){ 5608 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 5609 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 5610 conn->request_role = role; 5611 hci_run(); 5612 return ERROR_CODE_SUCCESS; 5613 } 5614 #endif 5615 5616 #ifdef ENABLE_BLE 5617 5618 uint8_t gap_le_set_phy(hci_con_handle_t connection_handle, uint8_t all_phys, uint8_t tx_phys, uint8_t rx_phys, uint8_t phy_options){ 5619 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 5620 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 5621 5622 conn->le_phy_update_all_phys = all_phys; 5623 conn->le_phy_update_tx_phys = tx_phys; 5624 conn->le_phy_update_rx_phys = rx_phys; 5625 conn->le_phy_update_phy_options = phy_options; 5626 5627 hci_run(); 5628 5629 return 0; 5630 } 5631 5632 static uint8_t hci_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 5633 // check if already in list 5634 btstack_linked_list_iterator_t it; 5635 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5636 while (btstack_linked_list_iterator_has_next(&it)) { 5637 whitelist_entry_t *entry = (whitelist_entry_t *) btstack_linked_list_iterator_next(&it); 5638 if (entry->address_type != address_type) { 5639 continue; 5640 } 5641 if (memcmp(entry->address, address, 6) != 0) { 5642 continue; 5643 } 5644 // disallow if already scheduled to add 5645 if ((entry->state & LE_WHITELIST_ADD_TO_CONTROLLER) != 0){ 5646 return ERROR_CODE_COMMAND_DISALLOWED; 5647 } 5648 // still on controller, but scheduled to remove -> re-add 5649 entry->state |= LE_WHITELIST_ADD_TO_CONTROLLER; 5650 return ERROR_CODE_SUCCESS; 5651 } 5652 // alloc and add to list 5653 whitelist_entry_t * entry = btstack_memory_whitelist_entry_get(); 5654 if (!entry) return BTSTACK_MEMORY_ALLOC_FAILED; 5655 entry->address_type = address_type; 5656 (void)memcpy(entry->address, address, 6); 5657 entry->state = LE_WHITELIST_ADD_TO_CONTROLLER; 5658 btstack_linked_list_add(&hci_stack->le_whitelist, (btstack_linked_item_t*) entry); 5659 return ERROR_CODE_SUCCESS; 5660 } 5661 5662 static uint8_t hci_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 5663 btstack_linked_list_iterator_t it; 5664 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5665 while (btstack_linked_list_iterator_has_next(&it)){ 5666 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5667 if (entry->address_type != address_type) { 5668 continue; 5669 } 5670 if (memcmp(entry->address, address, 6) != 0) { 5671 continue; 5672 } 5673 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 5674 // remove from controller if already present 5675 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5676 } else { 5677 // directly remove entry from whitelist 5678 btstack_linked_list_iterator_remove(&it); 5679 btstack_memory_whitelist_entry_free(entry); 5680 } 5681 return ERROR_CODE_SUCCESS; 5682 } 5683 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 5684 } 5685 5686 static void hci_whitelist_clear(void){ 5687 btstack_linked_list_iterator_t it; 5688 btstack_linked_list_iterator_init(&it, &hci_stack->le_whitelist); 5689 while (btstack_linked_list_iterator_has_next(&it)){ 5690 whitelist_entry_t * entry = (whitelist_entry_t*) btstack_linked_list_iterator_next(&it); 5691 if (entry->state & LE_WHITELIST_ON_CONTROLLER){ 5692 // remove from controller if already present 5693 entry->state |= LE_WHITELIST_REMOVE_FROM_CONTROLLER; 5694 continue; 5695 } 5696 // directly remove entry from whitelist 5697 btstack_linked_list_iterator_remove(&it); 5698 btstack_memory_whitelist_entry_free(entry); 5699 } 5700 } 5701 5702 /** 5703 * @brief Clear Whitelist 5704 * @returns 0 if ok 5705 */ 5706 uint8_t gap_whitelist_clear(void){ 5707 hci_whitelist_clear(); 5708 hci_run(); 5709 return ERROR_CODE_SUCCESS; 5710 } 5711 5712 /** 5713 * @brief Add Device to Whitelist 5714 * @param address_typ 5715 * @param address 5716 * @returns 0 if ok 5717 */ 5718 uint8_t gap_whitelist_add(bd_addr_type_t address_type, const bd_addr_t address){ 5719 uint8_t status = hci_whitelist_add(address_type, address); 5720 if (status){ 5721 return status; 5722 } 5723 hci_run(); 5724 return ERROR_CODE_SUCCESS; 5725 } 5726 5727 /** 5728 * @brief Remove Device from Whitelist 5729 * @param address_typ 5730 * @param address 5731 * @returns 0 if ok 5732 */ 5733 uint8_t gap_whitelist_remove(bd_addr_type_t address_type, const bd_addr_t address){ 5734 uint8_t status = hci_whitelist_remove(address_type, address); 5735 if (status){ 5736 return status; 5737 } 5738 hci_run(); 5739 return ERROR_CODE_SUCCESS; 5740 } 5741 5742 #ifdef ENABLE_LE_CENTRAL 5743 /** 5744 * @brief Connect with Whitelist 5745 * @note Explicit whitelist management and this connect with whitelist replace deprecated gap_auto_connection_* functions 5746 * @returns - if ok 5747 */ 5748 uint8_t gap_connect_with_whitelist(void){ 5749 if (hci_stack->le_connecting_request != LE_CONNECTING_IDLE){ 5750 return ERROR_CODE_COMMAND_DISALLOWED; 5751 } 5752 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 5753 hci_run(); 5754 return ERROR_CODE_SUCCESS; 5755 } 5756 5757 /** 5758 * @brief Auto Connection Establishment - Start Connecting to device 5759 * @param address_typ 5760 * @param address 5761 * @returns 0 if ok 5762 */ 5763 uint8_t gap_auto_connection_start(bd_addr_type_t address_type, const bd_addr_t address){ 5764 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 5765 return ERROR_CODE_COMMAND_DISALLOWED; 5766 } 5767 5768 uint8_t status = hci_whitelist_add(address_type, address); 5769 if (status == BTSTACK_MEMORY_ALLOC_FAILED) { 5770 return status; 5771 } 5772 5773 hci_stack->le_connecting_request = LE_CONNECTING_WHITELIST; 5774 5775 hci_run(); 5776 return ERROR_CODE_SUCCESS; 5777 } 5778 5779 /** 5780 * @brief Auto Connection Establishment - Stop Connecting to device 5781 * @param address_typ 5782 * @param address 5783 * @returns 0 if ok 5784 */ 5785 uint8_t gap_auto_connection_stop(bd_addr_type_t address_type, const bd_addr_t address){ 5786 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT){ 5787 return ERROR_CODE_COMMAND_DISALLOWED; 5788 } 5789 5790 hci_whitelist_remove(address_type, address); 5791 if (btstack_linked_list_empty(&hci_stack->le_whitelist)){ 5792 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 5793 } 5794 hci_run(); 5795 return 0; 5796 } 5797 5798 /** 5799 * @brief Auto Connection Establishment - Stop everything 5800 * @note Convenience function to stop all active auto connection attempts 5801 */ 5802 uint8_t gap_auto_connection_stop_all(void){ 5803 if (hci_stack->le_connecting_request == LE_CONNECTING_DIRECT) { 5804 return ERROR_CODE_COMMAND_DISALLOWED; 5805 } 5806 hci_whitelist_clear(); 5807 hci_stack->le_connecting_request = LE_CONNECTING_IDLE; 5808 hci_run(); 5809 return ERROR_CODE_SUCCESS; 5810 } 5811 5812 uint16_t gap_le_connection_interval(hci_con_handle_t connection_handle){ 5813 hci_connection_t * conn = hci_connection_for_handle(connection_handle); 5814 if (!conn) return 0; 5815 return conn->le_connection_interval; 5816 } 5817 #endif 5818 #endif 5819 5820 #ifdef ENABLE_CLASSIC 5821 /** 5822 * @brief Set Extended Inquiry Response data 5823 * @param eir_data size HCI_EXTENDED_INQUIRY_RESPONSE_DATA_LEN (240) bytes, is not copied make sure memory is accessible during stack startup 5824 * @note has to be done before stack starts up 5825 */ 5826 void gap_set_extended_inquiry_response(const uint8_t * data){ 5827 hci_stack->eir_data = data; 5828 } 5829 5830 /** 5831 * @brief Start GAP Classic Inquiry 5832 * @param duration in 1.28s units 5833 * @return 0 if ok 5834 * @events: GAP_EVENT_INQUIRY_RESULT, GAP_EVENT_INQUIRY_COMPLETE 5835 */ 5836 int gap_inquiry_start(uint8_t duration_in_1280ms_units){ 5837 if (hci_stack->state != HCI_STATE_WORKING) return ERROR_CODE_COMMAND_DISALLOWED; 5838 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 5839 if ((duration_in_1280ms_units < GAP_INQUIRY_DURATION_MIN) || (duration_in_1280ms_units > GAP_INQUIRY_DURATION_MAX)){ 5840 return ERROR_CODE_INVALID_HCI_COMMAND_PARAMETERS; 5841 } 5842 hci_stack->inquiry_state = duration_in_1280ms_units; 5843 hci_run(); 5844 return 0; 5845 } 5846 5847 /** 5848 * @brief Stop GAP Classic Inquiry 5849 * @returns 0 if ok 5850 */ 5851 int gap_inquiry_stop(void){ 5852 if ((hci_stack->inquiry_state >= GAP_INQUIRY_DURATION_MIN) && (hci_stack->inquiry_state <= GAP_INQUIRY_DURATION_MAX)) { 5853 // emit inquiry complete event, before it even started 5854 uint8_t event[] = { GAP_EVENT_INQUIRY_COMPLETE, 1, 0}; 5855 hci_emit_event(event, sizeof(event), 1); 5856 return 0; 5857 } 5858 if (hci_stack->inquiry_state != GAP_INQUIRY_STATE_ACTIVE) return ERROR_CODE_COMMAND_DISALLOWED; 5859 hci_stack->inquiry_state = GAP_INQUIRY_STATE_W2_CANCEL; 5860 hci_run(); 5861 return 0; 5862 } 5863 5864 5865 /** 5866 * @brief Remote Name Request 5867 * @param addr 5868 * @param page_scan_repetition_mode 5869 * @param clock_offset only used when bit 15 is set 5870 * @events: HCI_EVENT_REMOTE_NAME_REQUEST_COMPLETE 5871 */ 5872 int gap_remote_name_request(const bd_addr_t addr, uint8_t page_scan_repetition_mode, uint16_t clock_offset){ 5873 if (hci_stack->remote_name_state != GAP_REMOTE_NAME_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 5874 (void)memcpy(hci_stack->remote_name_addr, addr, 6); 5875 hci_stack->remote_name_page_scan_repetition_mode = page_scan_repetition_mode; 5876 hci_stack->remote_name_clock_offset = clock_offset; 5877 hci_stack->remote_name_state = GAP_REMOTE_NAME_STATE_W2_SEND; 5878 hci_run(); 5879 return 0; 5880 } 5881 5882 static int gap_pairing_set_state_and_run(const bd_addr_t addr, uint8_t state){ 5883 hci_stack->gap_pairing_state = state; 5884 (void)memcpy(hci_stack->gap_pairing_addr, addr, 6); 5885 hci_run(); 5886 return 0; 5887 } 5888 5889 /** 5890 * @brief Legacy Pairing Pin Code Response for binary data / non-strings 5891 * @param addr 5892 * @param pin_data 5893 * @param pin_len 5894 * @return 0 if ok 5895 */ 5896 int gap_pin_code_response_binary(const bd_addr_t addr, const uint8_t * pin_data, uint8_t pin_len){ 5897 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 5898 hci_stack->gap_pairing_input.gap_pairing_pin = pin_data; 5899 hci_stack->gap_pairing_pin_len = pin_len; 5900 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN); 5901 } 5902 5903 /** 5904 * @brief Legacy Pairing Pin Code Response 5905 * @param addr 5906 * @param pin 5907 * @return 0 if ok 5908 */ 5909 int gap_pin_code_response(const bd_addr_t addr, const char * pin){ 5910 return gap_pin_code_response_binary(addr, (const uint8_t*) pin, strlen(pin)); 5911 } 5912 5913 /** 5914 * @brief Abort Legacy Pairing 5915 * @param addr 5916 * @param pin 5917 * @return 0 if ok 5918 */ 5919 int gap_pin_code_negative(bd_addr_t addr){ 5920 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 5921 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PIN_NEGATIVE); 5922 } 5923 5924 /** 5925 * @brief SSP Passkey Response 5926 * @param addr 5927 * @param passkey 5928 * @return 0 if ok 5929 */ 5930 int gap_ssp_passkey_response(const bd_addr_t addr, uint32_t passkey){ 5931 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 5932 hci_stack->gap_pairing_input.gap_pairing_passkey = passkey; 5933 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY); 5934 } 5935 5936 /** 5937 * @brief Abort SSP Passkey Entry/Pairing 5938 * @param addr 5939 * @param pin 5940 * @return 0 if ok 5941 */ 5942 int gap_ssp_passkey_negative(const bd_addr_t addr){ 5943 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 5944 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_PASSKEY_NEGATIVE); 5945 } 5946 5947 /** 5948 * @brief Accept SSP Numeric Comparison 5949 * @param addr 5950 * @param passkey 5951 * @return 0 if ok 5952 */ 5953 int gap_ssp_confirmation_response(const bd_addr_t addr){ 5954 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 5955 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION); 5956 } 5957 5958 /** 5959 * @brief Abort SSP Numeric Comparison/Pairing 5960 * @param addr 5961 * @param pin 5962 * @return 0 if ok 5963 */ 5964 int gap_ssp_confirmation_negative(const bd_addr_t addr){ 5965 if (hci_stack->gap_pairing_state != GAP_PAIRING_STATE_IDLE) return ERROR_CODE_COMMAND_DISALLOWED; 5966 return gap_pairing_set_state_and_run(addr, GAP_PAIRING_STATE_SEND_CONFIRMATION_NEGATIVE); 5967 } 5968 5969 #ifdef ENABLE_EXPLICIT_IO_CAPABILITIES_REPLY 5970 5971 static uint8_t gap_set_auth_flag_and_run(const bd_addr_t addr, hci_authentication_flags_t flag){ 5972 hci_connection_t * conn = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 5973 if (!conn) return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 5974 connectionSetAuthenticationFlags(conn, flag); 5975 hci_run(); 5976 return ERROR_CODE_SUCCESS; 5977 } 5978 5979 uint8_t gap_ssp_io_capabilities_response(const bd_addr_t addr){ 5980 return gap_set_auth_flag_and_run(addr, SEND_IO_CAPABILITIES_REPLY); 5981 } 5982 5983 uint8_t gap_ssp_io_capabilities_negative(const bd_addr_t addr){ 5984 return gap_set_auth_flag_and_run(addr, SEND_IO_CAPABILITIES_NEGATIVE_REPLY); 5985 } 5986 #endif 5987 5988 #ifdef ENABLE_CLASSIC_PAIRING_OOB 5989 /** 5990 * @brief Report Remote OOB Data 5991 * @param bd_addr 5992 * @param c_192 Simple Pairing Hash C derived from P-192 public key 5993 * @param r_192 Simple Pairing Randomizer derived from P-192 public key 5994 * @param c_256 Simple Pairing Hash C derived from P-256 public key 5995 * @param r_256 Simple Pairing Randomizer derived from P-256 public key 5996 */ 5997 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){ 5998 hci_connection_t * connection = hci_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 5999 if (connection == NULL) { 6000 return ERROR_CODE_UNKNOWN_CONNECTION_IDENTIFIER; 6001 } 6002 connection->classic_oob_c_192 = c_192; 6003 connection->classic_oob_r_192 = r_192; 6004 connection->classic_oob_c_256 = c_256; 6005 connection->classic_oob_r_256 = r_256; 6006 return ERROR_CODE_SUCCESS; 6007 } 6008 /** 6009 * @brief Generate new OOB data 6010 * @note OOB data will be provided in GAP_EVENT_LOCAL_OOB_DATA and be used in future pairing procedures 6011 */ 6012 void gap_ssp_generate_oob_data(void){ 6013 hci_stack->classic_read_local_oob_data = true; 6014 hci_run(); 6015 } 6016 6017 #endif 6018 6019 /** 6020 * @brief Set inquiry mode: standard, with RSSI, with RSSI + Extended Inquiry Results. Has to be called before power on. 6021 * @param inquiry_mode see bluetooth_defines.h 6022 */ 6023 void hci_set_inquiry_mode(inquiry_mode_t mode){ 6024 hci_stack->inquiry_mode = mode; 6025 } 6026 6027 /** 6028 * @brief Configure Voice Setting for use with SCO data in HSP/HFP 6029 */ 6030 void hci_set_sco_voice_setting(uint16_t voice_setting){ 6031 hci_stack->sco_voice_setting = voice_setting; 6032 } 6033 6034 /** 6035 * @brief Get SCO Voice Setting 6036 * @return current voice setting 6037 */ 6038 uint16_t hci_get_sco_voice_setting(void){ 6039 return hci_stack->sco_voice_setting; 6040 } 6041 6042 static int hci_have_usb_transport(void){ 6043 if (!hci_stack->hci_transport) return 0; 6044 const char * transport_name = hci_stack->hci_transport->name; 6045 if (!transport_name) return 0; 6046 return (transport_name[0] == 'H') && (transport_name[1] == '2'); 6047 } 6048 6049 /** @brief Get SCO packet length for current SCO Voice setting 6050 * @note Using SCO packets of the exact length is required for USB transfer 6051 * @return Length of SCO packets in bytes (not audio frames) 6052 */ 6053 int hci_get_sco_packet_length(void){ 6054 int sco_packet_length = 0; 6055 6056 #ifdef ENABLE_SCO_OVER_HCI 6057 6058 // Transparent = mSBC => 1, CVSD with 16-bit samples requires twice as much bytes 6059 int multiplier = ((hci_stack->sco_voice_setting_active & 0x03) == 0x03) ? 1 : 2; 6060 6061 if (hci_have_usb_transport()){ 6062 // see Core Spec for H2 USB Transfer. 6063 // 3 byte SCO header + 24 bytes per connection 6064 int num_sco_connections = btstack_max(1, hci_number_sco_connections()); 6065 sco_packet_length = 3 + 24 * num_sco_connections * multiplier; 6066 } else { 6067 // 3 byte SCO header + SCO packet size over the air (60 bytes) 6068 sco_packet_length = 3 + 60 * multiplier; 6069 // assert that it still fits inside an SCO buffer 6070 if (sco_packet_length > hci_stack->sco_data_packet_length){ 6071 sco_packet_length = 3 + 60; 6072 } 6073 } 6074 #endif 6075 return sco_packet_length; 6076 } 6077 6078 /** 6079 * @brief Sets the master/slave policy 6080 * @param policy (0: attempt to become master, 1: let connecting device decide) 6081 */ 6082 void hci_set_master_slave_policy(uint8_t policy){ 6083 hci_stack->master_slave_policy = policy; 6084 } 6085 6086 #endif 6087 6088 HCI_STATE hci_get_state(void){ 6089 return hci_stack->state; 6090 } 6091 6092 #ifdef ENABLE_CLASSIC 6093 void gap_register_classic_connection_filter(int (*accept_callback)(bd_addr_t addr, hci_link_type_t link_type)){ 6094 hci_stack->gap_classic_accept_callback = accept_callback; 6095 } 6096 #endif 6097 6098 /** 6099 * @brief Set callback for Bluetooth Hardware Error 6100 */ 6101 void hci_set_hardware_error_callback(void (*fn)(uint8_t error)){ 6102 hci_stack->hardware_error_callback = fn; 6103 } 6104 6105 void hci_disconnect_all(void){ 6106 btstack_linked_list_iterator_t it; 6107 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 6108 while (btstack_linked_list_iterator_has_next(&it)){ 6109 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 6110 if (con->state == SENT_DISCONNECT) continue; 6111 con->state = SEND_DISCONNECT; 6112 } 6113 hci_run(); 6114 } 6115 6116 uint16_t hci_get_manufacturer(void){ 6117 return hci_stack->manufacturer; 6118 } 6119 6120 #ifdef ENABLE_BLE 6121 6122 static sm_connection_t * sm_get_connection_for_handle(hci_con_handle_t con_handle){ 6123 hci_connection_t * hci_con = hci_connection_for_handle(con_handle); 6124 if (!hci_con) return NULL; 6125 return &hci_con->sm_connection; 6126 } 6127 6128 // extracted from sm.c to allow enabling of l2cap le data channels without adding sm.c to the build 6129 // without sm.c default values from create_connection_for_bd_addr_and_type() resulg in non-encrypted, not-authenticated 6130 6131 int gap_encryption_key_size(hci_con_handle_t con_handle){ 6132 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 6133 if (hci_connection == NULL) return 0; 6134 if (hci_is_le_connection(hci_connection)){ 6135 sm_connection_t * sm_conn = &hci_connection->sm_connection; 6136 if (sm_conn->sm_connection_encrypted) { 6137 return sm_conn->sm_actual_encryption_key_size; 6138 } 6139 } 6140 #ifdef ENABLE_CLASSIC 6141 else { 6142 if ((hci_connection->authentication_flags & CONNECTION_ENCRYPTED)){ 6143 return hci_connection->encryption_key_size; 6144 } 6145 } 6146 #endif 6147 return 0; 6148 } 6149 6150 int gap_authenticated(hci_con_handle_t con_handle){ 6151 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 6152 if (hci_connection == NULL) return 0; 6153 6154 switch (hci_connection->address_type){ 6155 case BD_ADDR_TYPE_LE_PUBLIC: 6156 case BD_ADDR_TYPE_LE_RANDOM: 6157 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 6158 return hci_connection->sm_connection.sm_connection_authenticated; 6159 #ifdef ENABLE_CLASSIC 6160 case BD_ADDR_TYPE_SCO: 6161 case BD_ADDR_TYPE_ACL: 6162 return gap_authenticated_for_link_key_type(hci_connection->link_key_type); 6163 #endif 6164 default: 6165 return 0; 6166 } 6167 } 6168 6169 int gap_secure_connection(hci_con_handle_t con_handle){ 6170 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 6171 if (hci_connection == NULL) return 0; 6172 6173 switch (hci_connection->address_type){ 6174 case BD_ADDR_TYPE_LE_PUBLIC: 6175 case BD_ADDR_TYPE_LE_RANDOM: 6176 if (hci_connection->sm_connection.sm_connection_encrypted == 0) return 0; // unencrypted connection cannot be authenticated 6177 return hci_connection->sm_connection.sm_connection_sc; 6178 #ifdef ENABLE_CLASSIC 6179 case BD_ADDR_TYPE_SCO: 6180 case BD_ADDR_TYPE_ACL: 6181 return gap_secure_connection_for_link_key_type(hci_connection->link_key_type); 6182 #endif 6183 default: 6184 return 0; 6185 } 6186 } 6187 6188 bool gap_bonded(hci_con_handle_t con_handle){ 6189 hci_connection_t * hci_connection = hci_connection_for_handle(con_handle); 6190 if (hci_connection == NULL) return 0; 6191 6192 #ifdef ENABLE_CLASSIC 6193 link_key_t link_key; 6194 link_key_type_t link_key_type; 6195 #endif 6196 switch (hci_connection->address_type){ 6197 case BD_ADDR_TYPE_LE_PUBLIC: 6198 case BD_ADDR_TYPE_LE_RANDOM: 6199 return hci_connection->sm_connection.sm_le_db_index >= 0; 6200 #ifdef ENABLE_CLASSIC 6201 case BD_ADDR_TYPE_SCO: 6202 case BD_ADDR_TYPE_ACL: 6203 return hci_stack->link_key_db && hci_stack->link_key_db->get_link_key(hci_connection->address, link_key, &link_key_type); 6204 #endif 6205 default: 6206 return false; 6207 } 6208 } 6209 6210 6211 authorization_state_t gap_authorization_state(hci_con_handle_t con_handle){ 6212 sm_connection_t * sm_conn = sm_get_connection_for_handle(con_handle); 6213 if (!sm_conn) return AUTHORIZATION_UNKNOWN; // wrong connection 6214 if (!sm_conn->sm_connection_encrypted) return AUTHORIZATION_UNKNOWN; // unencrypted connection cannot be authorized 6215 if (!sm_conn->sm_connection_authenticated) return AUTHORIZATION_UNKNOWN; // unauthenticatd connection cannot be authorized 6216 return sm_conn->sm_connection_authorization_state; 6217 } 6218 #endif 6219 6220 #ifdef ENABLE_CLASSIC 6221 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){ 6222 hci_connection_t * conn = hci_connection_for_handle(con_handle); 6223 if (!conn) return GAP_CONNECTION_INVALID; 6224 conn->sniff_min_interval = sniff_min_interval; 6225 conn->sniff_max_interval = sniff_max_interval; 6226 conn->sniff_attempt = sniff_attempt; 6227 conn->sniff_timeout = sniff_timeout; 6228 hci_run(); 6229 return 0; 6230 } 6231 6232 /** 6233 * @brief Exit Sniff mode 6234 * @param con_handle 6235 @ @return 0 if ok 6236 */ 6237 uint8_t gap_sniff_mode_exit(hci_con_handle_t con_handle){ 6238 hci_connection_t * conn = hci_connection_for_handle(con_handle); 6239 if (!conn) return GAP_CONNECTION_INVALID; 6240 conn->sniff_min_interval = 0xffff; 6241 hci_run(); 6242 return 0; 6243 } 6244 #endif 6245 6246 void hci_halting_defer(void){ 6247 if (hci_stack->state != HCI_STATE_HALTING) return; 6248 switch (hci_stack->substate){ 6249 case HCI_HALTING_DISCONNECT_ALL_NO_TIMER: 6250 case HCI_HALTING_CLOSE: 6251 hci_stack->substate = HCI_HALTING_DISCONNECT_ALL_TIMER; 6252 break; 6253 default: 6254 break; 6255 } 6256 } 6257 6258 #ifdef ENABLE_LE_PRIVACY_ADDRESS_RESOLUTION 6259 void hci_load_le_device_db_entry_into_resolving_list(uint16_t le_device_db_index){ 6260 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 6261 if (le_device_db_index >= le_device_db_max_count()) return; 6262 uint8_t offset = le_device_db_index >> 3; 6263 uint8_t mask = 1 << (le_device_db_index & 7); 6264 hci_stack->le_resolving_list_add_entries[offset] |= mask; 6265 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 6266 // note: go back to remove entries, otherwise, a remove + add will skip the add 6267 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 6268 } 6269 } 6270 6271 void hci_remove_le_device_db_entry_from_resolving_list(uint16_t le_device_db_index){ 6272 if (le_device_db_index >= MAX_NUM_RESOLVING_LIST_ENTRIES) return; 6273 if (le_device_db_index >= le_device_db_max_count()) return; 6274 uint8_t offset = le_device_db_index >> 3; 6275 uint8_t mask = 1 << (le_device_db_index & 7); 6276 hci_stack->le_resolving_list_remove_entries[offset] |= mask; 6277 if (hci_stack->le_resolving_list_state == LE_RESOLVING_LIST_DONE){ 6278 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_REMOVE_ENTRIES; 6279 } 6280 } 6281 6282 uint8_t gap_load_resolving_list_from_le_device_db(void){ 6283 if ((hci_stack->local_supported_commands[1] & (1 << 2)) == 0) { 6284 return ERROR_CODE_UNSUPPORTED_FEATURE_OR_PARAMETER_VALUE; 6285 } 6286 if (hci_stack->le_resolving_list_state != LE_RESOLVING_LIST_SEND_ENABLE_ADDRESS_RESOLUTION){ 6287 // restart le resolving list update 6288 hci_stack->le_resolving_list_state = LE_RESOLVING_LIST_READ_SIZE; 6289 } 6290 return ERROR_CODE_SUCCESS; 6291 } 6292 #endif 6293 6294 #ifdef FUZZING_BUILD_MODE_UNSAFE_FOR_PRODUCTION 6295 void hci_setup_test_connections_fuzz(void){ 6296 hci_connection_t * conn; 6297 6298 // default address: 66:55:44:33:00:01 6299 bd_addr_t addr = { 0x66, 0x55, 0x44, 0x33, 0x00, 0x00}; 6300 6301 // setup Controller info 6302 hci_stack->num_cmd_packets = 255; 6303 hci_stack->acl_packets_total_num = 255; 6304 6305 // setup incoming Classic ACL connection with con handle 0x0001, 66:55:44:33:22:01 6306 addr[5] = 0x01; 6307 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6308 conn->con_handle = addr[5]; 6309 conn->role = HCI_ROLE_SLAVE; 6310 conn->state = RECEIVED_CONNECTION_REQUEST; 6311 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 6312 6313 // setup incoming Classic SCO connection with con handle 0x0002 6314 addr[5] = 0x02; 6315 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 6316 conn->con_handle = addr[5]; 6317 conn->role = HCI_ROLE_SLAVE; 6318 conn->state = RECEIVED_CONNECTION_REQUEST; 6319 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 6320 6321 // setup ready Classic ACL connection with con handle 0x0003 6322 addr[5] = 0x03; 6323 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_ACL); 6324 conn->con_handle = addr[5]; 6325 conn->role = HCI_ROLE_SLAVE; 6326 conn->state = OPEN; 6327 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 6328 6329 // setup ready Classic SCO connection with con handle 0x0004 6330 addr[5] = 0x04; 6331 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_SCO); 6332 conn->con_handle = addr[5]; 6333 conn->role = HCI_ROLE_SLAVE; 6334 conn->state = OPEN; 6335 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 6336 6337 // setup ready LE ACL connection with con handle 0x005 and public address 6338 addr[5] = 0x05; 6339 conn = create_connection_for_bd_addr_and_type(addr, BD_ADDR_TYPE_LE_PUBLIC); 6340 conn->con_handle = addr[5]; 6341 conn->role = HCI_ROLE_SLAVE; 6342 conn->state = OPEN; 6343 conn->sm_connection.sm_role = HCI_ROLE_SLAVE; 6344 } 6345 6346 void hci_free_connections_fuzz(void){ 6347 btstack_linked_list_iterator_t it; 6348 btstack_linked_list_iterator_init(&it, &hci_stack->connections); 6349 while (btstack_linked_list_iterator_has_next(&it)){ 6350 hci_connection_t * con = (hci_connection_t*) btstack_linked_list_iterator_next(&it); 6351 btstack_linked_list_iterator_remove(&it); 6352 btstack_memory_hci_connection_free(con); 6353 } 6354 } 6355 void hci_simulate_working_fuzz(void){ 6356 hci_init_done(); 6357 hci_stack->num_cmd_packets = 255; 6358 } 6359 #endif 6360