btm_ble.c revision 24adb37e4106bf8544c7729d34451fdf2777c4dc
1/****************************************************************************** 2 * 3 * Copyright (C) 1999-2012 Broadcom Corporation 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at: 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 * 17 ******************************************************************************/ 18 19/****************************************************************************** 20 * 21 * This file contains functions for BLE device control utilities, and LE 22 * security functions. 23 * 24 ******************************************************************************/ 25#include "bt_target.h" 26 27#if BLE_INCLUDED == TRUE 28 29#include <string.h> 30 31#include "bt_types.h" 32#include "hcimsgs.h" 33#include "btu.h" 34#include "btm_int.h" 35#include "btm_ble_api.h" 36#include "smp_api.h" 37#include "l2c_int.h" 38#include "gap_api.h" 39#include "bt_utils.h" 40 41#include "vendor_ble.h" 42 43#if SMP_INCLUDED == TRUE 44extern BOOLEAN AES_CMAC ( BT_OCTET16 key, UINT8 *input, UINT16 length, UINT16 tlen, UINT8 *p_signature); 45extern void smp_link_encrypted(BD_ADDR bda, UINT8 encr_enable); 46extern BOOLEAN smp_proc_ltk_request(BD_ADDR bda); 47#endif 48extern void gatt_notify_enc_cmpl(BD_ADDR bd_addr); 49/*******************************************************************************/ 50/* External Function to be called by other modules */ 51/*******************************************************************************/ 52/******************************************************** 53** 54** Function BTM_SecAddBleDevice 55** 56** Description Add/modify device. This function will be normally called 57** during host startup to restore all required information 58** for a LE device stored in the NVRAM. 59** 60** Parameters: bd_addr - BD address of the peer 61** bd_name - Name of the peer device. NULL if unknown. 62** dev_type - Remote device's device type. 63** addr_type - LE device address type. 64** 65** Returns TRUE if added OK, else FALSE 66** 67*******************************************************************************/ 68BOOLEAN BTM_SecAddBleDevice (BD_ADDR bd_addr, BD_NAME bd_name, tBT_DEVICE_TYPE dev_type, 69 tBLE_ADDR_TYPE addr_type) 70{ 71 tBTM_SEC_DEV_REC *p_dev_rec; 72 UINT8 i = 0; 73 tBTM_INQ_INFO *p_info=NULL; 74 75 BTM_TRACE_DEBUG ("BTM_SecAddBleDevice dev_type=0x%x", dev_type); 76 p_dev_rec = btm_find_dev (bd_addr); 77 78 if (!p_dev_rec) 79 { 80 BTM_TRACE_DEBUG("Add a new device"); 81 82 /* There is no device record, allocate one. 83 * If we can not find an empty spot for this one, let it fail. */ 84 for (i = 0; i < BTM_SEC_MAX_DEVICE_RECORDS; i++) 85 { 86 if (!(btm_cb.sec_dev_rec[i].sec_flags & BTM_SEC_IN_USE)) 87 { 88 BTM_TRACE_DEBUG ("allocate a new dev rec idx=0x%x ", i ); 89 p_dev_rec = &btm_cb.sec_dev_rec[i]; 90 91 /* Mark this record as in use and initialize */ 92 memset (p_dev_rec, 0, sizeof (tBTM_SEC_DEV_REC)); 93 p_dev_rec->sec_flags = BTM_SEC_IN_USE; 94 memcpy (p_dev_rec->bd_addr, bd_addr, BD_ADDR_LEN); 95 p_dev_rec->hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_BR_EDR); 96 p_dev_rec->ble_hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_LE); 97 98 /* update conn params, use default value for background connection params */ 99 p_dev_rec->conn_params.min_conn_int = 100 p_dev_rec->conn_params.max_conn_int = 101 p_dev_rec->conn_params.supervision_tout = 102 p_dev_rec->conn_params.slave_latency = BTM_BLE_CONN_PARAM_UNDEF; 103 104 BTM_TRACE_DEBUG ("hci_handl=0x%x ", p_dev_rec->ble_hci_handle ); 105 break; 106 } 107 } 108 109 if (!p_dev_rec) 110 return(FALSE); 111 } 112 else 113 { 114 BTM_TRACE_DEBUG("Device already exist"); 115 } 116 117 memset(p_dev_rec->sec_bd_name, 0, sizeof(tBTM_BD_NAME)); 118 119 if (bd_name && bd_name[0]) 120 { 121 p_dev_rec->sec_flags |= BTM_SEC_NAME_KNOWN; 122 BCM_STRNCPY_S ((char *)p_dev_rec->sec_bd_name, sizeof (p_dev_rec->sec_bd_name), 123 (char *)bd_name, BTM_MAX_REM_BD_NAME_LEN); 124 } 125 p_dev_rec->device_type = dev_type; 126 p_dev_rec->ble.ble_addr_type = addr_type; 127 BTM_TRACE_DEBUG ("p_dev_rec->device_type =0x%x addr_type=0x%x sec_flags=0x%x", 128 dev_type, addr_type, p_dev_rec->sec_flags); 129 130 /* sync up with the Inq Data base*/ 131 p_info = BTM_InqDbRead(bd_addr); 132 if (p_info) 133 { 134 p_info->results.ble_addr_type = p_dev_rec->ble.ble_addr_type ; 135 p_info->results.device_type = p_dev_rec->device_type; 136 BTM_TRACE_DEBUG ("InqDb device_type =0x%x addr_type=0x%x", 137 p_info->results.device_type, p_info->results.ble_addr_type); 138 } 139 140 return(TRUE); 141} 142 143/******************************************************************************* 144** 145** Function BTM_SecAddBleKey 146** 147** Description Add/modify LE device information. This function will be 148** normally called during host startup to restore all required 149** information stored in the NVRAM. 150** 151** Parameters: bd_addr - BD address of the peer 152** p_le_key - LE key values. 153** key_type - LE SMP key type. 154* 155** Returns TRUE if added OK, else FALSE 156** 157*******************************************************************************/ 158BOOLEAN BTM_SecAddBleKey (BD_ADDR bd_addr, tBTM_LE_KEY_VALUE *p_le_key, tBTM_LE_KEY_TYPE key_type) 159{ 160#if SMP_INCLUDED == TRUE 161 tBTM_SEC_DEV_REC *p_dev_rec; 162 BTM_TRACE_DEBUG ("BTM_SecAddBleKey"); 163 p_dev_rec = btm_find_dev (bd_addr); 164 if (!p_dev_rec || !p_le_key || 165 (key_type != BTM_LE_KEY_PENC && key_type != BTM_LE_KEY_PID && 166 key_type != BTM_LE_KEY_PCSRK && key_type != BTM_LE_KEY_LENC && 167 key_type != BTM_LE_KEY_LCSRK)) 168 { 169 BTM_TRACE_WARNING ("BTM_SecAddBleKey() Wrong Type, or No Device record \ 170 for bdaddr: %08x%04x, Type: %d", 171 (bd_addr[0]<<24)+(bd_addr[1]<<16)+(bd_addr[2]<<8)+bd_addr[3], 172 (bd_addr[4]<<8)+bd_addr[5], key_type); 173 return(FALSE); 174 } 175 176 BTM_TRACE_DEBUG ("BTM_SecAddLeKey() BDA: %08x%04x, Type: 0x%02x", 177 (bd_addr[0]<<24)+(bd_addr[1]<<16)+(bd_addr[2]<<8)+bd_addr[3], 178 (bd_addr[4]<<8)+bd_addr[5], key_type); 179 180 if (key_type == BTM_LE_KEY_PENC || key_type == BTM_LE_KEY_PID || 181 key_type == BTM_LE_KEY_PCSRK || key_type == BTM_LE_KEY_LENC || 182 key_type == BTM_LE_KEY_LCSRK) 183 { 184 btm_sec_save_le_key (bd_addr, key_type, p_le_key, FALSE); 185 } 186 187#endif 188 189 return(TRUE); 190} 191 192/******************************************************************************* 193** 194** Function BTM_BleLoadLocalKeys 195** 196** Description Local local identity key, encryption root or sign counter. 197** 198** Parameters: key_type: type of key, can be BTM_BLE_KEY_TYPE_ID, BTM_BLE_KEY_TYPE_ER 199** or BTM_BLE_KEY_TYPE_COUNTER. 200** p_key: pointer to the key. 201* 202** Returns non2. 203** 204*******************************************************************************/ 205void BTM_BleLoadLocalKeys(UINT8 key_type, tBTM_BLE_LOCAL_KEYS *p_key) 206{ 207 tBTM_DEVCB *p_devcb = &btm_cb.devcb; 208 BTM_TRACE_DEBUG ("BTM_BleLoadLocalKeys"); 209 if (p_key != NULL) 210 { 211 switch (key_type) 212 { 213 case BTM_BLE_KEY_TYPE_ID: 214 memcpy(&p_devcb->id_keys, &p_key->id_keys, sizeof(tBTM_BLE_LOCAL_ID_KEYS)); 215 break; 216 217 case BTM_BLE_KEY_TYPE_ER: 218 memcpy(p_devcb->er, p_key->er, sizeof(BT_OCTET16)); 219 break; 220 221 default: 222 BTM_TRACE_ERROR("unknow local key type: %d", key_type); 223 break; 224 } 225 } 226} 227 228/******************************************************************************* 229** 230** Function BTM_GetDeviceEncRoot 231** 232** Description This function is called to read the local device encryption 233** root. 234** 235** Returns void 236** the local device ER is copied into er 237** 238*******************************************************************************/ 239void BTM_GetDeviceEncRoot (BT_OCTET16 er) 240{ 241 BTM_TRACE_DEBUG ("BTM_GetDeviceEncRoot"); 242 243 memcpy (er, btm_cb.devcb.er, BT_OCTET16_LEN); 244} 245 246/******************************************************************************* 247** 248** Function BTM_GetDeviceIDRoot 249** 250** Description This function is called to read the local device identity 251** root. 252** 253** Returns void 254** the local device IR is copied into irk 255** 256*******************************************************************************/ 257void BTM_GetDeviceIDRoot (BT_OCTET16 irk) 258{ 259 BTM_TRACE_DEBUG ("BTM_GetDeviceIDRoot "); 260 261 memcpy (irk, btm_cb.devcb.id_keys.irk, BT_OCTET16_LEN); 262} 263 264/******************************************************************************* 265** 266** Function BTM_GetDeviceDHK 267** 268** Description This function is called to read the local device DHK. 269** 270** Returns void 271** the local device DHK is copied into dhk 272** 273*******************************************************************************/ 274void BTM_GetDeviceDHK (BT_OCTET16 dhk) 275{ 276 BTM_TRACE_DEBUG ("BTM_GetDeviceDHK"); 277 memcpy (dhk, btm_cb.devcb.id_keys.dhk, BT_OCTET16_LEN); 278} 279 280/******************************************************************************* 281** 282** Function BTM_ReadConnectionAddr 283** 284** Description This function is called to get the local device address information 285** . 286** 287** Returns void 288** 289*******************************************************************************/ 290void BTM_ReadConnectionAddr (BD_ADDR remote_bda, BD_ADDR local_conn_addr, tBLE_ADDR_TYPE *p_addr_type) 291{ 292 tACL_CONN *p_acl = btm_bda_to_acl(remote_bda, BT_TRANSPORT_LE); 293 294 if (p_acl == NULL) 295 { 296 BTM_TRACE_ERROR("No connection exist!"); 297 return; 298 } 299 memcpy(local_conn_addr, p_acl->conn_addr, BD_ADDR_LEN); 300 * p_addr_type = p_acl->conn_addr_type; 301 302 BTM_TRACE_DEBUG ("BTM_ReadConnectionAddr address type: %d addr: 0x%02x", 303 p_acl->conn_addr_type, p_acl->conn_addr[0]); 304} 305 306/******************************************************************************* 307** 308** Function BTM_IsBleConnection 309** 310** Description This function is called to check if the connection handle 311** for an LE link 312** 313** Returns TRUE if connection is LE link, otherwise FALSE. 314** 315*******************************************************************************/ 316BOOLEAN BTM_IsBleConnection (UINT16 conn_handle) 317{ 318#if (BLE_INCLUDED == TRUE) 319 UINT8 xx; 320 tACL_CONN *p; 321 322 BTM_TRACE_API ("BTM_IsBleConnection: conn_handle: %d", conn_handle); 323 324 xx = btm_handle_to_acl_index (conn_handle); 325 if (xx >= MAX_L2CAP_LINKS) 326 return FALSE; 327 328 p = &btm_cb.acl_db[xx]; 329 330 return (p->transport == BT_TRANSPORT_LE); 331#else 332 return FALSE; 333#endif 334} 335 336/******************************************************************************* 337** 338** Function BTM_ReadRemoteConnectionAddr 339** 340** Description This function is read the remote device address currently used 341** 342** Parameters pseudo_addr: pseudo random address available 343** conn_addr:connection address used 344** p_addr_type : BD Address type, Public or Random of the address used 345** 346** Returns BOOLEAN , TRUE if connection to remote device exists, else FALSE 347** 348*******************************************************************************/ 349BOOLEAN BTM_ReadRemoteConnectionAddr(BD_ADDR pseudo_addr, BD_ADDR conn_addr, 350 tBLE_ADDR_TYPE *p_addr_type) 351{ 352 BOOLEAN st = TRUE; 353#if (BLE_PRIVACY_SPT == TRUE) 354 tACL_CONN *p = btm_bda_to_acl (pseudo_addr, BT_TRANSPORT_LE); 355 356 if (p == NULL) 357 { 358 BTM_TRACE_ERROR("BTM_ReadRemoteConnectionAddr can not find connection" 359 " with matching address"); 360 return FALSE; 361 } 362 363 memcpy(conn_addr, p->active_remote_addr, BD_ADDR_LEN); 364 *p_addr_type = p->active_remote_addr_type; 365#else 366 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(pseudo_addr); 367 368 memcpy(conn_addr, pseudo_addr, BD_ADDR_LEN); 369 if (p_dev_rec != NULL) 370 { 371 *p_addr_type = p_dev_rec->ble.ble_addr_type; 372 } 373#endif 374 return st; 375 376} 377/******************************************************************************* 378** 379** Function BTM_SecurityGrant 380** 381** Description This function is called to grant security process. 382** 383** Parameters bd_addr - peer device bd address. 384** res - result of the operation BTM_SUCCESS if success. 385** Otherwise, BTM_REPEATED_ATTEMPTS is too many attempts. 386** 387** Returns None 388** 389*******************************************************************************/ 390void BTM_SecurityGrant(BD_ADDR bd_addr, UINT8 res) 391{ 392#if SMP_INCLUDED == TRUE 393 tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_REPEATED_ATTEMPTS; 394 BTM_TRACE_DEBUG ("BTM_SecurityGrant"); 395 SMP_SecurityGrant(bd_addr, res_smp); 396#endif 397} 398 399/******************************************************************************* 400** 401** Function BTM_BlePasskeyReply 402** 403** Description This function is called after Security Manager submitted 404** passkey request to the application. 405** 406** Parameters: bd_addr - Address of the device for which passkey was requested 407** res - result of the operation BTM_SUCCESS if success 408** key_len - length in bytes of the Passkey 409** p_passkey - pointer to array with the passkey 410** trusted_mask - bitwise OR of trusted services (array of UINT32) 411** 412*******************************************************************************/ 413void BTM_BlePasskeyReply (BD_ADDR bd_addr, UINT8 res, UINT32 passkey) 414{ 415#if SMP_INCLUDED == TRUE 416 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr); 417 tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_PASSKEY_ENTRY_FAIL; 418 419 if (p_dev_rec == NULL) 420 { 421 BTM_TRACE_ERROR("Passkey reply to Unknown device"); 422 return; 423 } 424 425 p_dev_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED; 426 BTM_TRACE_DEBUG ("BTM_BlePasskeyReply"); 427 SMP_PasskeyReply(bd_addr, res_smp, passkey); 428#endif 429} 430 431/******************************************************************************* 432** 433** Function BTM_BleOobDataReply 434** 435** Description This function is called to provide the OOB data for 436** SMP in response to BTM_LE_OOB_REQ_EVT 437** 438** Parameters: bd_addr - Address of the peer device 439** res - result of the operation SMP_SUCCESS if success 440** p_data - simple pairing Randomizer C. 441** 442*******************************************************************************/ 443void BTM_BleOobDataReply(BD_ADDR bd_addr, UINT8 res, UINT8 len, UINT8 *p_data) 444{ 445#if SMP_INCLUDED == TRUE 446 tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_OOB_FAIL; 447 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr); 448 449 BTM_TRACE_DEBUG ("BTM_BleOobDataReply"); 450 451 if (p_dev_rec == NULL) 452 { 453 BTM_TRACE_ERROR("BTM_BleOobDataReply() to Unknown device"); 454 return; 455 } 456 457 p_dev_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED; 458 SMP_OobDataReply(bd_addr, res_smp, len, p_data); 459#endif 460} 461 462/****************************************************************************** 463** 464** Function BTM_BleSetConnScanParams 465** 466** Description Set scan parameter used in BLE connection request 467** 468** Parameters: scan_interval: scan interval 469** scan_window: scan window 470** 471** Returns void 472** 473*******************************************************************************/ 474void BTM_BleSetConnScanParams (UINT16 scan_interval, UINT16 scan_window) 475{ 476#if SMP_INCLUDED == TRUE 477 tBTM_BLE_CB *p_ble_cb = &btm_cb.ble_ctr_cb; 478 BOOLEAN new_param = FALSE; 479 480 if (BTM_BLE_VALID_PRAM(scan_interval, BTM_BLE_SCAN_INT_MIN, BTM_BLE_SCAN_INT_MAX) && 481 BTM_BLE_VALID_PRAM(scan_window, BTM_BLE_SCAN_WIN_MIN, BTM_BLE_SCAN_WIN_MAX)) 482 { 483 btu_stop_timer(&p_ble_cb->scan_param_idle_timer); 484 485 if (p_ble_cb->scan_int != scan_interval) 486 { 487 p_ble_cb->scan_int = scan_interval; 488 new_param = TRUE; 489 } 490 491 if (p_ble_cb->scan_win != scan_window) 492 { 493 p_ble_cb->scan_win = scan_window; 494 new_param = TRUE; 495 } 496 497 if (new_param && p_ble_cb->conn_state == BLE_BG_CONN) 498 { 499 btm_ble_suspend_bg_conn(); 500 } 501 } 502 else 503 { 504 BTM_TRACE_ERROR("Illegal Connection Scan Parameters"); 505 } 506#endif 507} 508 509/******************************************************** 510** 511** Function BTM_BleSetPrefConnParams 512** 513** Description Set a peripheral's preferred connection parameters 514** 515** Parameters: bd_addr - BD address of the peripheral 516** scan_interval: scan interval 517** scan_window: scan window 518** min_conn_int - minimum preferred connection interval 519** max_conn_int - maximum preferred connection interval 520** slave_latency - preferred slave latency 521** supervision_tout - preferred supervision timeout 522** 523** Returns void 524** 525*******************************************************************************/ 526void BTM_BleSetPrefConnParams (BD_ADDR bd_addr, 527 UINT16 min_conn_int, UINT16 max_conn_int, 528 UINT16 slave_latency, UINT16 supervision_tout) 529{ 530 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr); 531 532 BTM_TRACE_API ("BTM_BleSetPrefConnParams min: %u max: %u latency: %u \ 533 tout: %u", 534 min_conn_int, max_conn_int, slave_latency, supervision_tout); 535 536 if (BTM_BLE_VALID_PRAM(min_conn_int, BTM_BLE_CONN_INT_MIN, BTM_BLE_CONN_INT_MAX) && 537 BTM_BLE_VALID_PRAM(max_conn_int, BTM_BLE_CONN_INT_MIN, BTM_BLE_CONN_INT_MAX) && 538 BTM_BLE_VALID_PRAM(supervision_tout, BTM_BLE_CONN_SUP_TOUT_MIN, BTM_BLE_CONN_SUP_TOUT_MAX) && 539 (slave_latency <= BTM_BLE_CONN_LATENCY_MAX || slave_latency == BTM_BLE_CONN_PARAM_UNDEF)) 540 { 541 if (p_dev_rec) 542 { 543 /* expect conn int and stout and slave latency to be updated all together */ 544 if (min_conn_int != BTM_BLE_CONN_PARAM_UNDEF || max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) 545 { 546 if (min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) 547 p_dev_rec->conn_params.min_conn_int = min_conn_int; 548 else 549 p_dev_rec->conn_params.min_conn_int = max_conn_int; 550 551 if (max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) 552 p_dev_rec->conn_params.max_conn_int = max_conn_int; 553 else 554 p_dev_rec->conn_params.max_conn_int = min_conn_int; 555 556 if (slave_latency != BTM_BLE_CONN_PARAM_UNDEF) 557 p_dev_rec->conn_params.slave_latency = slave_latency; 558 else 559 p_dev_rec->conn_params.slave_latency = BTM_BLE_CONN_SLAVE_LATENCY_DEF; 560 561 if (supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) 562 p_dev_rec->conn_params.supervision_tout = supervision_tout; 563 else 564 p_dev_rec->conn_params.supervision_tout = BTM_BLE_CONN_TIMEOUT_DEF; 565 566 } 567 568 } 569 else 570 { 571 BTM_TRACE_ERROR("Unknown Device, setting rejected"); 572 } 573 } 574 else 575 { 576 BTM_TRACE_ERROR("Illegal Connection Parameters"); 577 } 578} 579 580/******************************************************************************* 581** 582** Function BTM_ReadDevInfo 583** 584** Description This function is called to read the device/address type 585** of BD address. 586** 587** Parameter remote_bda: remote device address 588** p_dev_type: output parameter to read the device type. 589** p_addr_type: output parameter to read the address type. 590** 591*******************************************************************************/ 592void BTM_ReadDevInfo (BD_ADDR remote_bda, tBT_DEVICE_TYPE *p_dev_type, tBLE_ADDR_TYPE *p_addr_type) 593{ 594 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (remote_bda); 595 tBTM_INQ_INFO *p_inq_info = BTM_InqDbRead(remote_bda); 596 597 *p_dev_type = BT_DEVICE_TYPE_BREDR; 598 *p_addr_type = BLE_ADDR_PUBLIC; 599 600 if (!p_dev_rec) 601 { 602 /* Check with the BT manager if details about remote device are known */ 603 if (p_inq_info != NULL) 604 { 605 *p_dev_type = p_inq_info->results.device_type ; 606 *p_addr_type = p_inq_info->results.ble_addr_type; 607 } else { 608 /* unknown device, assume BR/EDR */ 609 BTM_TRACE_DEBUG ("btm_find_dev_type - unknown device, BR/EDR assumed"); 610 } 611 } 612 else /* there is a security device record exisitng */ 613 { 614 /* new inquiry result, overwrite device type in security device record */ 615 if (p_inq_info) 616 { 617 p_dev_rec->device_type = p_inq_info->results.device_type; 618 p_dev_rec->ble.ble_addr_type = p_inq_info->results.ble_addr_type; 619 } 620 *p_dev_type = p_dev_rec->device_type; 621 *p_addr_type = p_dev_rec->ble.ble_addr_type; 622 623 } 624 625 BTM_TRACE_DEBUG ("btm_find_dev_type - device_type = %d addr_type = %d", *p_dev_type , *p_addr_type); 626} 627 628/******************************************************************************* 629** 630** Function BTM_BleReceiverTest 631** 632** Description This function is called to start the LE Receiver test 633** 634** Parameter rx_freq - Frequency Range 635** p_cmd_cmpl_cback - Command Complete callback 636** 637*******************************************************************************/ 638void BTM_BleReceiverTest(UINT8 rx_freq, tBTM_CMPL_CB *p_cmd_cmpl_cback) 639{ 640 btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback; 641 642 if (btsnd_hcic_ble_receiver_test(rx_freq) == FALSE) 643 { 644 BTM_TRACE_ERROR("%s: Unable to Trigger LE receiver test", __FUNCTION__); 645 } 646} 647 648/******************************************************************************* 649** 650** Function BTM_BleTransmitterTest 651** 652** Description This function is called to start the LE Transmitter test 653** 654** Parameter tx_freq - Frequency Range 655** test_data_len - Length in bytes of payload data in each packet 656** packet_payload - Pattern to use in the payload 657** p_cmd_cmpl_cback - Command Complete callback 658** 659*******************************************************************************/ 660void BTM_BleTransmitterTest(UINT8 tx_freq, UINT8 test_data_len, 661 UINT8 packet_payload, tBTM_CMPL_CB *p_cmd_cmpl_cback) 662{ 663 btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback; 664 if (btsnd_hcic_ble_transmitter_test(tx_freq, test_data_len, packet_payload) == FALSE) 665 { 666 BTM_TRACE_ERROR("%s: Unable to Trigger LE transmitter test", __FUNCTION__); 667 } 668} 669 670/******************************************************************************* 671** 672** Function BTM_BleTestEnd 673** 674** Description This function is called to stop the in-progress TX or RX test 675** 676** Parameter p_cmd_cmpl_cback - Command complete callback 677** 678*******************************************************************************/ 679void BTM_BleTestEnd(tBTM_CMPL_CB *p_cmd_cmpl_cback) 680{ 681 btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback; 682 683 if (btsnd_hcic_ble_test_end() == FALSE) 684 { 685 BTM_TRACE_ERROR("%s: Unable to End the LE TX/RX test", __FUNCTION__); 686 } 687} 688 689/******************************************************************************* 690** Internal Functions 691*******************************************************************************/ 692void btm_ble_test_command_complete(UINT8 *p) 693{ 694 tBTM_CMPL_CB *p_cb = btm_cb.devcb.p_le_test_cmd_cmpl_cb; 695 UINT8 status; 696 697 btm_cb.devcb.p_le_test_cmd_cmpl_cb = NULL; 698 699 if (p_cb) 700 { 701 (*p_cb)(p); 702 } 703} 704 705/******************************************************************************* 706** 707** Function BTM_UseLeLink 708** 709** Description This function is to select the underneath physical link to use. 710** 711** Returns TRUE to use LE, FALSE use BR/EDR. 712** 713*******************************************************************************/ 714BOOLEAN BTM_UseLeLink (BD_ADDR bd_addr) 715{ 716 tACL_CONN *p; 717 tBT_DEVICE_TYPE dev_type; 718 tBLE_ADDR_TYPE addr_type; 719 BOOLEAN use_le = FALSE; 720 721 if ((p = btm_bda_to_acl(bd_addr, BT_TRANSPORT_BR_EDR)) != NULL) 722 { 723 return use_le; 724 } 725 else if ((p = btm_bda_to_acl(bd_addr, BT_TRANSPORT_LE)) != NULL) 726 { 727 use_le = TRUE; 728 } 729 else 730 { 731 BTM_ReadDevInfo(bd_addr, &dev_type, &addr_type); 732 use_le = (dev_type == BT_DEVICE_TYPE_BLE); 733 } 734 return use_le; 735} 736/******************************************************************************* 737** 738** Function btm_ble_rand_enc_complete 739** 740** Description This function is the callback functions for HCI_Rand command 741** and HCI_Encrypt command is completed. 742** This message is received from the HCI. 743** 744** Returns void 745** 746*******************************************************************************/ 747void btm_ble_rand_enc_complete (UINT8 *p, UINT16 op_code, tBTM_RAND_ENC_CB *p_enc_cplt_cback) 748{ 749 tBTM_RAND_ENC params; 750 UINT8 *p_dest = params.param_buf; 751 752 BTM_TRACE_DEBUG ("btm_ble_rand_enc_complete"); 753 754 memset(¶ms, 0, sizeof(tBTM_RAND_ENC)); 755 756 /* If there was a callback address for vcs complete, call it */ 757 if (p_enc_cplt_cback && p) 758 { 759 /* Pass paramters to the callback function */ 760 STREAM_TO_UINT8(params.status, p); /* command status */ 761 762 if (params.status == HCI_SUCCESS) 763 { 764 params.opcode = op_code; 765 766 if (op_code == HCI_BLE_RAND) 767 params.param_len = BT_OCTET8_LEN; 768 else 769 params.param_len = BT_OCTET16_LEN; 770 771 memcpy(p_dest, p, params.param_len); /* Fetch return info from HCI event message */ 772 } 773 if (p_enc_cplt_cback) 774 (*p_enc_cplt_cback)(¶ms); /* Call the Encryption complete callback function */ 775 } 776} 777 778 779 #if (SMP_INCLUDED == TRUE) 780 781/******************************************************************************* 782** 783** Function btm_ble_get_enc_key_type 784** 785** Description This function is to increment local sign counter 786** Returns None 787** 788*******************************************************************************/ 789void btm_ble_increment_sign_ctr(BD_ADDR bd_addr, BOOLEAN is_local ) 790{ 791 tBTM_SEC_DEV_REC *p_dev_rec; 792 793 BTM_TRACE_DEBUG ("btm_ble_increment_sign_ctr is_local=%d", is_local); 794 795 if ((p_dev_rec = btm_find_dev (bd_addr)) != NULL) 796 { 797 if (is_local) 798 p_dev_rec->ble.keys.local_counter++; 799 else 800 p_dev_rec->ble.keys.counter++; 801 BTM_TRACE_DEBUG ("is_local=%d local sign counter=%d peer sign counter=%d", 802 is_local, 803 p_dev_rec->ble.keys.local_counter, 804 p_dev_rec->ble.keys.counter); 805 } 806} 807 808/******************************************************************************* 809** 810** Function btm_ble_get_enc_key_type 811** 812** Description This function is to get the BLE key type that has been exchanged 813** in betweem local device and peer device. 814** 815** Returns p_key_type: output parameter to carry the key type value. 816** 817*******************************************************************************/ 818BOOLEAN btm_ble_get_enc_key_type(BD_ADDR bd_addr, UINT8 *p_key_types) 819{ 820 tBTM_SEC_DEV_REC *p_dev_rec; 821 822 BTM_TRACE_DEBUG ("btm_ble_get_enc_key_type"); 823 824 if ((p_dev_rec = btm_find_dev (bd_addr)) != NULL) 825 { 826 *p_key_types = p_dev_rec->ble.key_type; 827 return TRUE; 828 } 829 return FALSE; 830} 831 832/******************************************************************************* 833** 834** Function btm_get_local_div 835** 836** Description This function is called to read the local DIV 837** 838** Returns TURE - if a valid DIV is availavle 839*******************************************************************************/ 840BOOLEAN btm_get_local_div (BD_ADDR bd_addr, UINT16 *p_div) 841{ 842 tBTM_SEC_DEV_REC *p_dev_rec; 843 BOOLEAN status = FALSE; 844 BTM_TRACE_DEBUG ("btm_get_local_div"); 845 846 BTM_TRACE_DEBUG("bd_addr:%02x-%02x-%02x-%02x-%02x-%02x", 847 bd_addr[0],bd_addr[1], 848 bd_addr[2],bd_addr[3], 849 bd_addr[4],bd_addr[5]); 850 851 *p_div = 0; 852 p_dev_rec = btm_find_dev (bd_addr); 853 854 if (p_dev_rec && p_dev_rec->ble.keys.div) 855 { 856 status = TRUE; 857 *p_div = p_dev_rec->ble.keys.div; 858 } 859 BTM_TRACE_DEBUG ("btm_get_local_div status=%d (1-OK) DIV=0x%x", status, *p_div); 860 return status; 861} 862 863/******************************************************************************* 864** 865** Function btm_sec_save_le_key 866** 867** Description This function is called by the SMP to update 868** an BLE key. SMP is internal, whereas all the keys shall 869** be sent to the application. The function is also called 870** when application passes ble key stored in NVRAM to the btm_sec. 871** pass_to_application parameter is false in this case. 872** 873** Returns void 874** 875*******************************************************************************/ 876void btm_sec_save_le_key(BD_ADDR bd_addr, tBTM_LE_KEY_TYPE key_type, tBTM_LE_KEY_VALUE *p_keys, 877 BOOLEAN pass_to_application) 878{ 879 tBTM_SEC_DEV_REC *p_rec; 880 tBTM_LE_EVT_DATA cb_data; 881 UINT8 i; 882 883 BTM_TRACE_DEBUG ("btm_sec_save_le_key key_type=0x%x pass_to_application=%d",key_type, pass_to_application); 884 /* Store the updated key in the device database */ 885 886 BTM_TRACE_DEBUG("bd_addr:%02x-%02x-%02x-%02x-%02x-%02x", 887 bd_addr[0],bd_addr[1], 888 bd_addr[2],bd_addr[3], 889 bd_addr[4],bd_addr[5]); 890 891 if ((p_rec = btm_find_dev (bd_addr)) != NULL && p_keys) 892 { 893 switch (key_type) 894 { 895 case BTM_LE_KEY_PENC: 896 memcpy(p_rec->ble.keys.ltk, p_keys->penc_key.ltk, BT_OCTET16_LEN); 897 memcpy(p_rec->ble.keys.rand, p_keys->penc_key.rand, BT_OCTET8_LEN); 898 p_rec->ble.keys.sec_level = p_keys->penc_key.sec_level; 899 p_rec->ble.keys.ediv = p_keys->penc_key.ediv; 900 p_rec->ble.keys.key_size = p_keys->penc_key.key_size; 901 p_rec->ble.key_type |= BTM_LE_KEY_PENC; 902 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_KNOWN; 903 if (p_keys->penc_key.sec_level == SMP_SEC_AUTHENTICATED) 904 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED; 905 else 906 p_rec->sec_flags &= ~BTM_SEC_LE_LINK_KEY_AUTHED; 907 BTM_TRACE_DEBUG("BTM_LE_KEY_PENC key_type=0x%x sec_flags=0x%x sec_leve=0x%x", 908 p_rec->ble.key_type, 909 p_rec->sec_flags, 910 p_rec->ble.keys.sec_level); 911 break; 912 913 case BTM_LE_KEY_PID: 914 for (i=0; i<BT_OCTET16_LEN; i++) 915 { 916 p_rec->ble.keys.irk[i] = p_keys->pid_key.irk[i]; 917 } 918 919 //memcpy( p_rec->ble.keys.irk, p_keys->pid_key, BT_OCTET16_LEN); todo will crash the system 920 memcpy(p_rec->ble.static_addr, p_keys->pid_key.static_addr, BD_ADDR_LEN); 921 p_rec->ble.static_addr_type = p_keys->pid_key.addr_type; 922 p_rec->ble.key_type |= BTM_LE_KEY_PID; 923 BTM_TRACE_DEBUG("BTM_LE_KEY_PID key_type=0x%x save peer IRK", p_rec->ble.key_type); 924 break; 925 926 case BTM_LE_KEY_PCSRK: 927 memcpy(p_rec->ble.keys.csrk, p_keys->pcsrk_key.csrk, BT_OCTET16_LEN); 928 p_rec->ble.keys.srk_sec_level = p_keys->pcsrk_key.sec_level; 929 p_rec->ble.keys.counter = p_keys->pcsrk_key.counter; 930 p_rec->ble.key_type |= BTM_LE_KEY_PCSRK; 931 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_KNOWN; 932 if ( p_keys->pcsrk_key.sec_level== SMP_SEC_AUTHENTICATED) 933 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED; 934 else 935 p_rec->sec_flags &= ~BTM_SEC_LE_LINK_KEY_AUTHED; 936 937 BTM_TRACE_DEBUG("BTM_LE_KEY_PCSRK key_type=0x%x sec_flags=0x%x sec_level=0x%x peer_counter=%d", 938 p_rec->ble.key_type, 939 p_rec->sec_flags, 940 p_rec->ble.keys.srk_sec_level, 941 p_rec->ble.keys.counter ); 942 break; 943 944 case BTM_LE_KEY_LENC: 945 p_rec->ble.keys.div = p_keys->lenc_key.div; /* update DIV */ 946 p_rec->ble.keys.sec_level = p_keys->lenc_key.sec_level; 947 p_rec->ble.keys.key_size = p_keys->lenc_key.key_size; 948 p_rec->ble.key_type |= BTM_LE_KEY_LENC; 949 950 BTM_TRACE_DEBUG("BTM_LE_KEY_LENC key_type=0x%x DIV=0x%x key_size=0x%x sec_level=0x%x", 951 p_rec->ble.key_type, 952 p_rec->ble.keys.div, 953 p_rec->ble.keys.key_size, 954 p_rec->ble.keys.sec_level ); 955 break; 956 957 case BTM_LE_KEY_LCSRK:/* local CSRK has been delivered */ 958 p_rec->ble.keys.div = p_keys->lcsrk_key.div; /* update DIV */ 959 p_rec->ble.keys.local_csrk_sec_level = p_keys->lcsrk_key.sec_level; 960 p_rec->ble.keys.local_counter = p_keys->lcsrk_key.counter; 961 p_rec->ble.key_type |= BTM_LE_KEY_LCSRK; 962 BTM_TRACE_DEBUG("BTM_LE_KEY_LCSRK key_type=0x%x DIV=0x%x scrk_sec_level=0x%x local_counter=%d", 963 p_rec->ble.key_type, 964 p_rec->ble.keys.div, 965 p_rec->ble.keys.local_csrk_sec_level, 966 p_rec->ble.keys.local_counter ); 967 break; 968 969 default: 970 BTM_TRACE_WARNING("btm_sec_save_le_key (Bad key_type 0x%02x)", key_type); 971 return; 972 } 973 974 BTM_TRACE_DEBUG ("BLE key type 0x%02x updated for BDA: %08x%04x (btm_sec_save_le_key)", key_type, 975 (bd_addr[0]<<24)+(bd_addr[1]<<16)+(bd_addr[2]<<8)+bd_addr[3], 976 (bd_addr[4]<<8)+bd_addr[5]); 977 978 /* Notify the application that one of the BLE keys has been updated 979 If link key is in progress, it will get sent later.*/ 980 if (pass_to_application && btm_cb.api.p_le_callback) 981 { 982 cb_data.key.p_key_value = p_keys; 983 cb_data.key.key_type = key_type; 984 (*btm_cb.api.p_le_callback) (BTM_LE_KEY_EVT, bd_addr, &cb_data); 985 } 986 return; 987 } 988 989 BTM_TRACE_WARNING ("BLE key type 0x%02x called for Unknown BDA or type: %08x%04x !! (btm_sec_save_le_key)", key_type, 990 (bd_addr[0]<<24)+(bd_addr[1]<<16)+(bd_addr[2]<<8)+bd_addr[3], 991 (bd_addr[4]<<8)+bd_addr[5]); 992 993 if (p_rec) 994 { 995 BTM_TRACE_DEBUG ("sec_flags=0x%x", p_rec->sec_flags); 996 } 997} 998 999/******************************************************************************* 1000** 1001** Function btm_ble_update_sec_key_size 1002** 1003** Description update the current lin kencryption key size 1004** 1005** Returns void 1006** 1007*******************************************************************************/ 1008void btm_ble_update_sec_key_size(BD_ADDR bd_addr, UINT8 enc_key_size) 1009{ 1010 tBTM_SEC_DEV_REC *p_rec; 1011 1012 BTM_TRACE_DEBUG("btm_ble_update_sec_key_size enc_key_size = %d", enc_key_size); 1013 1014 if ((p_rec = btm_find_dev (bd_addr)) != NULL ) 1015 { 1016 p_rec->enc_key_size = enc_key_size; 1017 } 1018} 1019 1020/******************************************************************************* 1021** 1022** Function btm_ble_read_sec_key_size 1023** 1024** Description update the current lin kencryption key size 1025** 1026** Returns void 1027** 1028*******************************************************************************/ 1029UINT8 btm_ble_read_sec_key_size(BD_ADDR bd_addr) 1030{ 1031 tBTM_SEC_DEV_REC *p_rec; 1032 1033 if ((p_rec = btm_find_dev (bd_addr)) != NULL ) 1034 { 1035 return p_rec->enc_key_size; 1036 } 1037 else 1038 return 0; 1039} 1040 1041/******************************************************************************* 1042** 1043** Function btm_ble_link_sec_check 1044** 1045** Description Check BLE link security level match. 1046** 1047** Returns TRUE: check is OK and the *p_sec_req_act contain the action 1048** 1049*******************************************************************************/ 1050void btm_ble_link_sec_check(BD_ADDR bd_addr, tBTM_LE_AUTH_REQ auth_req, tBTM_BLE_SEC_REQ_ACT *p_sec_req_act) 1051{ 1052 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr); 1053 UINT8 req_sec_level = BTM_LE_SEC_NONE, cur_sec_level = BTM_LE_SEC_NONE; 1054 1055 BTM_TRACE_DEBUG ("btm_ble_link_sec_check auth_req =0x%x", auth_req); 1056 1057 if (p_dev_rec == NULL) 1058 { 1059 BTM_TRACE_ERROR ("btm_ble_link_sec_check received for unknown device"); 1060 return; 1061 } 1062 1063 if (p_dev_rec->sec_state == BTM_SEC_STATE_ENCRYPTING || 1064 p_dev_rec->sec_state == BTM_SEC_STATE_AUTHENTICATING) 1065 { 1066 /* race condition: discard the security request while master is encrypting the link */ 1067 *p_sec_req_act = BTM_BLE_SEC_REQ_ACT_DISCARD; 1068 } 1069 else 1070 { 1071 req_sec_level = BTM_LE_SEC_UNAUTHENTICATE; 1072 if ((auth_req == (BTM_LE_AUTH_REQ_BOND|BTM_LE_AUTH_REQ_MITM)) || 1073 (auth_req == (BTM_LE_AUTH_REQ_MITM)) ) 1074 { 1075 req_sec_level = BTM_LE_SEC_AUTHENTICATED; 1076 } 1077 1078 BTM_TRACE_DEBUG ("dev_rec sec_flags=0x%x", p_dev_rec->sec_flags); 1079 1080 /* currently encrpted */ 1081 if (p_dev_rec->sec_flags & BTM_SEC_LE_ENCRYPTED) 1082 { 1083 if (p_dev_rec->sec_flags & BTM_SEC_LE_LINK_KEY_AUTHED) 1084 cur_sec_level = BTM_LE_SEC_AUTHENTICATED; 1085 else 1086 cur_sec_level = BTM_LE_SEC_UNAUTHENTICATE; 1087 } 1088 else /* unencrypted link */ 1089 { 1090 /* if bonded, get the key security level */ 1091 if (p_dev_rec->ble.key_type & BTM_LE_KEY_PENC) 1092 cur_sec_level = p_dev_rec->ble.keys.sec_level; 1093 else 1094 cur_sec_level = BTM_LE_SEC_NONE; 1095 } 1096 1097 if (cur_sec_level >= req_sec_level) 1098 { 1099 if (cur_sec_level == BTM_LE_SEC_NONE) 1100 { 1101 *p_sec_req_act = BTM_BLE_SEC_REQ_ACT_NONE; 1102 } 1103 else 1104 { 1105 /* To avoid re-encryption on an encrypted link for an equal condition encryption */ 1106 /* if link has been encrypted, do nothing, go straight to furhter action 1107 if (p_dev_rec->sec_flags & BTM_SEC_ENCRYPTED) 1108 *p_sec_req_act = BTM_BLE_SEC_REQ_ACT_DISCARD; 1109 else 1110 */ 1111 *p_sec_req_act = BTM_BLE_SEC_REQ_ACT_ENCRYPT; 1112 } 1113 } 1114 else 1115 { 1116 *p_sec_req_act = BTM_BLE_SEC_REQ_ACT_PAIR; /* start the pariring process to upgrade the keys*/ 1117 } 1118 } 1119 1120 BTM_TRACE_DEBUG("cur_sec_level=%d req_sec_level=%d sec_req_act=%d", 1121 cur_sec_level, 1122 req_sec_level, 1123 *p_sec_req_act); 1124 1125} 1126 1127/******************************************************************************* 1128** 1129** Function btm_ble_set_encryption 1130** 1131** Description This function is called to ensure that LE connection is 1132** encrypted. Should be called only on an open connection. 1133** Typically only needed for connections that first want to 1134** bring up unencrypted links, then later encrypt them. 1135** 1136** Returns void 1137** the local device ER is copied into er 1138** 1139*******************************************************************************/ 1140tBTM_STATUS btm_ble_set_encryption (BD_ADDR bd_addr, void *p_ref_data, UINT8 link_role) 1141{ 1142 tBTM_STATUS cmd = BTM_NO_RESOURCES; 1143 tBTM_BLE_SEC_ACT sec_act = *(tBTM_BLE_SEC_ACT *)p_ref_data ; 1144 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr); 1145 1146 if (p_rec == NULL) 1147 { 1148 BTM_TRACE_WARNING ("btm_ble_set_encryption (NULL device record!! sec_act=0x%x", sec_act); 1149 return(BTM_WRONG_MODE); 1150 } 1151 1152 BTM_TRACE_DEBUG ("btm_ble_set_encryption sec_act=0x%x role_master=%d", sec_act, p_rec->role_master); 1153 1154 if (sec_act == BTM_BLE_SEC_ENCRYPT_MITM) 1155 { 1156 p_rec->security_required |= BTM_SEC_IN_MITM; 1157 } 1158 1159 switch (sec_act) 1160 { 1161 case BTM_BLE_SEC_ENCRYPT: 1162 if (link_role == BTM_ROLE_MASTER) 1163 { 1164 if(p_rec->sec_state == BTM_SEC_STATE_ENCRYPTING) { 1165 BTM_TRACE_DEBUG ("State is already encrypting::"); 1166 cmd = BTM_CMD_STARTED; 1167 } 1168 else { 1169 /* start link layer encryption using the security info stored */ 1170 if (btm_ble_start_encrypt(bd_addr, FALSE, NULL)) 1171 { 1172 p_rec->sec_state = BTM_SEC_STATE_ENCRYPTING; 1173 cmd = BTM_CMD_STARTED; 1174 } 1175 } 1176 break; 1177 } 1178 /* if salve role then fall through to call SMP_Pair below which will send a 1179 sec_request to request the master to encrypt the link */ 1180 case BTM_BLE_SEC_ENCRYPT_NO_MITM: 1181 case BTM_BLE_SEC_ENCRYPT_MITM: 1182 1183 if (SMP_Pair(bd_addr) == SMP_STARTED) 1184 { 1185 cmd = BTM_CMD_STARTED; 1186 p_rec->sec_state = BTM_SEC_STATE_AUTHENTICATING; 1187 } 1188 break; 1189 1190 default: 1191 cmd = BTM_WRONG_MODE; 1192 break; 1193 } 1194 return cmd; 1195} 1196 1197/******************************************************************************* 1198** 1199** Function btm_ble_ltk_request 1200** 1201** Description This function is called when encryption request is received 1202** on a slave device. 1203** 1204** 1205** Returns void 1206** 1207*******************************************************************************/ 1208void btm_ble_ltk_request(UINT16 handle, UINT8 rand[8], UINT16 ediv) 1209{ 1210 tBTM_CB *p_cb = &btm_cb; 1211 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev_by_handle (handle); 1212 BT_OCTET8 dummy_stk = {0}; 1213 1214 BTM_TRACE_DEBUG ("btm_ble_ltk_request"); 1215 1216 p_cb->ediv = ediv; 1217 1218 memcpy(p_cb->enc_rand, rand, BT_OCTET8_LEN); 1219 1220 if (p_dev_rec != NULL) 1221 { 1222 if (!smp_proc_ltk_request(p_dev_rec->bd_addr)) 1223 btm_ble_ltk_request_reply(p_dev_rec->bd_addr, FALSE, dummy_stk); 1224 } 1225 1226} 1227 1228/******************************************************************************* 1229** 1230** Function btm_ble_start_encrypt 1231** 1232** Description This function is called to start LE encryption. 1233** 1234** 1235** Returns BTM_SUCCESS if encryption was started successfully 1236** 1237*******************************************************************************/ 1238tBTM_STATUS btm_ble_start_encrypt(BD_ADDR bda, BOOLEAN use_stk, BT_OCTET16 stk) 1239{ 1240 tBTM_CB *p_cb = &btm_cb; 1241 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bda); 1242 BT_OCTET8 dummy_rand = {0}; 1243 tBTM_STATUS rt = BTM_NO_RESOURCES; 1244 1245 BTM_TRACE_DEBUG ("btm_ble_start_encrypt"); 1246 1247 if (!p_rec ) 1248 { 1249 BTM_TRACE_ERROR("Link is not active, can not encrypt!"); 1250 return BTM_WRONG_MODE; 1251 } 1252 1253 if (p_rec->sec_state == BTM_SEC_STATE_ENCRYPTING) 1254 { 1255 BTM_TRACE_WARNING("Link Encryption is active, Busy!"); 1256 return BTM_BUSY; 1257 } 1258 1259 p_cb->enc_handle = p_rec->ble_hci_handle; 1260 1261 if (use_stk) 1262 { 1263 if (btsnd_hcic_ble_start_enc(p_rec->ble_hci_handle, dummy_rand, 0, stk)) 1264 rt = BTM_CMD_STARTED; 1265 } 1266 else if (p_rec->ble.key_type & BTM_LE_KEY_PENC) 1267 { 1268 if (btsnd_hcic_ble_start_enc(p_rec->ble_hci_handle, p_rec->ble.keys.rand, 1269 p_rec->ble.keys.ediv, p_rec->ble.keys.ltk)) 1270 rt = BTM_CMD_STARTED; 1271 } 1272 else 1273 { 1274 BTM_TRACE_ERROR("No key available to encrypt the link"); 1275 } 1276 if (rt == BTM_CMD_STARTED) 1277 { 1278 if (p_rec->sec_state == BTM_SEC_STATE_IDLE) 1279 p_rec->sec_state = BTM_SEC_STATE_ENCRYPTING; 1280 } 1281 1282 return rt; 1283} 1284 1285/******************************************************************************* 1286** 1287** Function btm_ble_link_encrypted 1288** 1289** Description This function is called when LE link encrption status is changed. 1290** 1291** Returns void 1292** 1293*******************************************************************************/ 1294void btm_ble_link_encrypted(BD_ADDR bd_addr, UINT8 encr_enable) 1295{ 1296 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr); 1297 BOOLEAN enc_cback; 1298 1299 if (!p_dev_rec) 1300 { 1301 BTM_TRACE_WARNING ("btm_ble_link_encrypted (No Device Found!) encr_enable=%d", encr_enable); 1302 return; 1303 } 1304 1305 BTM_TRACE_DEBUG ("btm_ble_link_encrypted encr_enable=%d", encr_enable); 1306 1307 enc_cback = (p_dev_rec->sec_state == BTM_SEC_STATE_ENCRYPTING); 1308 1309 smp_link_encrypted(bd_addr, encr_enable); 1310 1311 BTM_TRACE_DEBUG(" p_dev_rec->sec_flags=0x%x", p_dev_rec->sec_flags); 1312 1313 if (encr_enable && p_dev_rec->enc_key_size == 0) 1314 p_dev_rec->enc_key_size = p_dev_rec->ble.keys.key_size; 1315 1316 p_dev_rec->sec_state = BTM_SEC_STATE_IDLE; 1317 if (p_dev_rec->p_callback && enc_cback) 1318 { 1319 if (encr_enable) 1320 btm_sec_dev_rec_cback_event(p_dev_rec, BTM_SUCCESS, TRUE); 1321 else if (p_dev_rec->role_master) 1322 btm_sec_dev_rec_cback_event(p_dev_rec, BTM_ERR_PROCESSING, TRUE); 1323 1324 } 1325 /* to notify GATT to send data if any request is pending */ 1326 gatt_notify_enc_cmpl(p_dev_rec->bd_addr); 1327} 1328 1329/******************************************************************************* 1330** Function btm_enc_proc_ltk 1331** Description send LTK reply when it's ready. 1332*******************************************************************************/ 1333static void btm_enc_proc_ltk(tSMP_ENC *p) 1334{ 1335 UINT8 i; 1336 BTM_TRACE_DEBUG ("btm_enc_proc_ltk"); 1337 if (p && p->param_len == BT_OCTET16_LEN) 1338 { 1339 for (i = 0; i < (BT_OCTET16_LEN - btm_cb.key_size); i ++) 1340 p->param_buf[BT_OCTET16_LEN - i - 1] = 0; 1341 btsnd_hcic_ble_ltk_req_reply(btm_cb.enc_handle, p->param_buf); 1342 } 1343} 1344 1345/******************************************************************************* 1346** Function btm_enc_proc_slave_y 1347** Description calculate LTK when Y is ready 1348*******************************************************************************/ 1349static void btm_enc_proc_slave_y(tSMP_ENC *p) 1350{ 1351 UINT16 div, y; 1352 UINT8 *pp = p->param_buf; 1353 tBTM_CB *p_cb = &btm_cb; 1354 tSMP_ENC output; 1355 tBTM_SEC_DEV_REC *p_dev_rec; 1356 1357 BTM_TRACE_DEBUG ("btm_enc_proc_slave_y"); 1358 if (p != NULL) 1359 { 1360 STREAM_TO_UINT16(y, pp); 1361 1362 div = p_cb->ediv ^ y; 1363 p_dev_rec = btm_find_dev_by_handle (p_cb->enc_handle); 1364 1365 if ( p_dev_rec && 1366 p_dev_rec->ble.keys.div == div ) 1367 { 1368 BTM_TRACE_DEBUG ("LTK request OK"); 1369 /* calculating LTK , LTK = E er(div) */ 1370 SMP_Encrypt(p_cb->devcb.er, BT_OCTET16_LEN, (UINT8 *)&div, 2, &output); 1371 btm_enc_proc_ltk(&output); 1372 } 1373 else 1374 { 1375 BTM_TRACE_DEBUG ("LTK request failed - send negative reply"); 1376 btsnd_hcic_ble_ltk_req_neg_reply(p_cb->enc_handle); 1377 if (p_dev_rec) 1378 btm_ble_link_encrypted(p_dev_rec->bd_addr, 0); 1379 1380 } 1381 } 1382} 1383 1384/******************************************************************************* 1385** 1386** Function btm_ble_ltk_request_reply 1387** 1388** Description This function is called to send a LTK request reply on a slave 1389** device. 1390** 1391** Returns void 1392** 1393*******************************************************************************/ 1394void btm_ble_ltk_request_reply(BD_ADDR bda, BOOLEAN use_stk, BT_OCTET16 stk) 1395{ 1396 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bda); 1397 tBTM_CB *p_cb = &btm_cb; 1398 tSMP_ENC output; 1399 1400 if (p_rec == NULL) 1401 { 1402 BTM_TRACE_ERROR("btm_ble_ltk_request_reply received for unknown device"); 1403 return; 1404 } 1405 1406 BTM_TRACE_DEBUG ("btm_ble_ltk_request_reply"); 1407 p_cb->enc_handle = p_rec->ble_hci_handle; 1408 p_cb->key_size = p_rec->ble.keys.key_size; 1409 1410 BTM_TRACE_ERROR("key size = %d", p_rec->ble.keys.key_size); 1411 if (use_stk) 1412 { 1413 btsnd_hcic_ble_ltk_req_reply(btm_cb.enc_handle, stk); 1414 } 1415 else /* calculate LTK using peer device */ 1416 { 1417 /* generate Y= Encrypt(DHK, Rand) received from encrypt request */ 1418 SMP_Encrypt(p_cb->devcb.id_keys.dhk, BT_OCTET16_LEN, p_cb->enc_rand, 1419 BT_OCTET8_LEN, &output); 1420 btm_enc_proc_slave_y(&output); 1421 } 1422} 1423 1424/******************************************************************************* 1425** 1426** Function btm_ble_io_capabilities_req 1427** 1428** Description This function is called to handle SMP get IO capability request. 1429** 1430** Returns void 1431** 1432*******************************************************************************/ 1433UINT8 btm_ble_io_capabilities_req(tBTM_SEC_DEV_REC *p_dev_rec, tBTM_LE_IO_REQ *p_data) 1434{ 1435 UINT8 callback_rc = BTM_SUCCESS; 1436 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req"); 1437 if (btm_cb.api.p_le_callback) 1438 { 1439 /* the callback function implementation may change the IO capability... */ 1440 callback_rc = (*btm_cb.api.p_le_callback) (BTM_LE_IO_REQ_EVT, p_dev_rec->bd_addr, (tBTM_LE_EVT_DATA *)p_data); 1441 } 1442#if BTM_OOB_INCLUDED == TRUE 1443 if ((callback_rc == BTM_SUCCESS) || (BTM_OOB_UNKNOWN != p_data->oob_data)) 1444#else 1445 if (callback_rc == BTM_SUCCESS) 1446#endif 1447 { 1448#if BTM_BLE_CONFORMANCE_TESTING == TRUE 1449 if (btm_cb.devcb.keep_rfu_in_auth_req) 1450 { 1451 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req keep_rfu_in_auth_req = %u", 1452 btm_cb.devcb.keep_rfu_in_auth_req); 1453 p_data->auth_req &= BTM_LE_AUTH_REQ_MASK_KEEP_RFU; 1454 btm_cb.devcb.keep_rfu_in_auth_req = FALSE; 1455 } 1456 else 1457 { /* default */ 1458 p_data->auth_req &= BTM_LE_AUTH_REQ_MASK; 1459 } 1460#else 1461 p_data->auth_req &= BTM_LE_AUTH_REQ_MASK; 1462#endif 1463 1464 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 1: p_dev_rec->security_required = %d auth_req:%d", 1465 p_dev_rec->security_required, p_data->auth_req); 1466 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 2: i_keys=0x%x r_keys=0x%x (bit 0-LTK 1-IRK 2-CSRK)", 1467 p_data->init_keys, 1468 p_data->resp_keys); 1469 1470 /* if authentication requires MITM protection, put on the mask */ 1471 if (p_dev_rec->security_required & BTM_SEC_IN_MITM) 1472 p_data->auth_req |= BTM_LE_AUTH_REQ_MITM; 1473 1474 if (!(p_data->auth_req & SMP_AUTH_BOND)) 1475 { 1476 BTM_TRACE_DEBUG("Non bonding: No keys should be exchanged"); 1477 p_data->init_keys = 0; 1478 p_data->resp_keys = 0; 1479 } 1480 1481 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 3: auth_req:%d", p_data->auth_req); 1482 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 4: i_keys=0x%x r_keys=0x%x", 1483 p_data->init_keys, 1484 p_data->resp_keys); 1485 1486 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 5: p_data->io_cap = %d auth_req:%d", 1487 p_data->io_cap, p_data->auth_req); 1488 1489 /* remove MITM protection requirement if IO cap does not allow it */ 1490 if ((p_data->io_cap == BTM_IO_CAP_NONE) && p_data->oob_data == SMP_OOB_NONE) 1491 p_data->auth_req &= ~BTM_LE_AUTH_REQ_MITM; 1492 1493 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 6: IO_CAP:%d oob_data:%d auth_req:%d", 1494 p_data->io_cap, p_data->oob_data, p_data->auth_req); 1495 } 1496 return callback_rc; 1497} 1498 1499#if (BLE_PRIVACY_SPT == TRUE ) 1500/******************************************************************************* 1501** 1502** Function btm_ble_resolve_random_addr_on_conn_cmpl 1503** 1504** Description resolve random address complete on connection complete event. 1505** 1506** Returns void 1507** 1508*******************************************************************************/ 1509static void btm_ble_resolve_random_addr_on_conn_cmpl(void * p_rec, void *p_data) 1510{ 1511 UINT8 *p = (UINT8 *)p_data; 1512 tBTM_SEC_DEV_REC *match_rec = (tBTM_SEC_DEV_REC *) p_rec; 1513 UINT8 role, status, bda_type; 1514 UINT16 handle; 1515 BD_ADDR bda; 1516 UINT16 conn_interval, conn_latency, conn_timeout; 1517 BOOLEAN match = FALSE; 1518 1519 STREAM_TO_UINT8 (status, p); 1520 STREAM_TO_UINT16 (handle, p); 1521 STREAM_TO_UINT8 (role, p); 1522 STREAM_TO_UINT8 (bda_type, p); 1523 STREAM_TO_BDADDR (bda, p); 1524 STREAM_TO_UINT16 (conn_interval, p); 1525 STREAM_TO_UINT16 (conn_latency, p); 1526 STREAM_TO_UINT16 (conn_timeout, p); 1527 1528 handle = HCID_GET_HANDLE (handle); 1529 1530 BTM_TRACE_EVENT ("btm_ble_resolve_random_addr_master_cmpl"); 1531 1532 if (match_rec) 1533 { 1534 BTM_TRACE_ERROR("Random match"); 1535 match = TRUE; 1536 match_rec->ble.active_addr_type = BTM_BLE_ADDR_RRA; 1537 memcpy(match_rec->ble.cur_rand_addr, bda, BD_ADDR_LEN); 1538 memcpy(bda, match_rec->bd_addr, BD_ADDR_LEN); 1539 } 1540 else 1541 { 1542 BTM_TRACE_ERROR("Random unmatch"); 1543 } 1544 1545 btm_ble_connected(bda, handle, HCI_ENCRYPT_MODE_DISABLED, role, bda_type, match); 1546 1547 l2cble_conn_comp (handle, role, bda, bda_type, conn_interval, 1548 conn_latency, conn_timeout); 1549 1550 return; 1551} 1552#endif 1553 1554/******************************************************************************* 1555** 1556** Function btm_ble_connected 1557** 1558** Description This function is when a LE connection to the peer device is 1559** establsihed 1560** 1561** Returns void 1562** 1563*******************************************************************************/ 1564void btm_ble_connected (UINT8 *bda, UINT16 handle, UINT8 enc_mode, UINT8 role, 1565 tBLE_ADDR_TYPE addr_type, BOOLEAN addr_matched) 1566{ 1567 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bda); 1568 tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb; 1569 UNUSED(addr_matched); 1570 1571 BTM_TRACE_EVENT ("btm_ble_connected"); 1572 1573 /* Commenting out trace due to obf/compilation problems. 1574 */ 1575#if (BT_USE_TRACES == TRUE) 1576 if (p_dev_rec) 1577 { 1578 BTM_TRACE_EVENT ("Security Manager: btm_ble_connected : handle:%d enc_mode:%d bda:%x RName:%s", 1579 handle, enc_mode, 1580 (bda[2]<<24)+(bda[3]<<16)+(bda[4]<<8)+bda[5], 1581 p_dev_rec->sec_bd_name); 1582 1583 BTM_TRACE_DEBUG ("btm_ble_connected sec_flags=0x%x",p_dev_rec->sec_flags); 1584 } 1585 else 1586 { 1587 BTM_TRACE_EVENT ("Security Manager: btm_ble_connected: handle:%d enc_mode:%d bda:%x ", 1588 handle, enc_mode, 1589 (bda[2]<<24)+(bda[3]<<16)+(bda[4]<<8)+bda[5]); 1590 } 1591#endif 1592 1593 if (!p_dev_rec) 1594 { 1595 /* There is no device record for new connection. Allocate one */ 1596 p_dev_rec = btm_sec_alloc_dev (bda); 1597 } 1598 else /* Update the timestamp for this device */ 1599 { 1600 p_dev_rec->timestamp = btm_cb.dev_rec_count++; 1601 } 1602 1603 /* update device information */ 1604 p_dev_rec->device_type |= BT_DEVICE_TYPE_BLE; 1605 p_dev_rec->ble_hci_handle = handle; 1606 p_dev_rec->ble.ble_addr_type = addr_type; 1607 1608 p_dev_rec->role_master = FALSE; 1609 if (role == HCI_ROLE_MASTER) 1610 p_dev_rec->role_master = TRUE; 1611 1612#if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE) 1613 if (!addr_matched) 1614 p_dev_rec->ble.active_addr_type = BTM_BLE_ADDR_PSEUDO; 1615 1616 if (p_dev_rec->ble.ble_addr_type == BLE_ADDR_RANDOM && !addr_matched) 1617 memcpy(p_dev_rec->ble.cur_rand_addr, bda, BD_ADDR_LEN); 1618 1619 if (btm_cb.cmn_ble_vsc_cb.rpa_offloading == TRUE) 1620 btm_ble_vendor_disable_irk_list(); 1621#endif 1622 1623 if (role == HCI_ROLE_SLAVE) 1624 p_cb->inq_var.adv_mode = BTM_BLE_ADV_DISABLE; 1625 p_cb->inq_var.directed_conn = FALSE; 1626 1627 return; 1628} 1629 1630/***************************************************************************** 1631** Function btm_ble_conn_complete 1632** 1633** Description LE connection complete. 1634** 1635******************************************************************************/ 1636void btm_ble_conn_complete(UINT8 *p, UINT16 evt_len) 1637{ 1638#if (BLE_PRIVACY_SPT == TRUE ) 1639 UINT8 *p_data = p; 1640#endif 1641 UINT8 role, status, bda_type; 1642 UINT16 handle; 1643 BD_ADDR bda = {0}; 1644 UINT16 conn_interval, conn_latency, conn_timeout; 1645 BOOLEAN match = FALSE; 1646 UNUSED(evt_len); 1647 1648 STREAM_TO_UINT8 (status, p); 1649 STREAM_TO_UINT16 (handle, p); 1650 STREAM_TO_UINT8 (role, p); 1651 STREAM_TO_UINT8 (bda_type, p); 1652 STREAM_TO_BDADDR (bda, p); 1653 1654 if (status == 0) 1655 { 1656#if (BLE_PRIVACY_SPT == TRUE ) 1657 1658 if (btm_cb.cmn_ble_vsc_cb.rpa_offloading == TRUE) 1659 match = btm_public_addr_to_random_pseudo (bda, &bda_type); 1660 1661 /* possiblly receive connection complete with resolvable random on 1662 slave role while the device has been paired */ 1663 if (!match && role == HCI_ROLE_SLAVE && BTM_BLE_IS_RESOLVE_BDA(bda)) 1664 { 1665 btm_ble_resolve_random_addr(bda, btm_ble_resolve_random_addr_on_conn_cmpl, p_data); 1666 } 1667 else 1668#endif 1669 { 1670 STREAM_TO_UINT16 (conn_interval, p); 1671 STREAM_TO_UINT16 (conn_latency, p); 1672 STREAM_TO_UINT16 (conn_timeout, p); 1673 handle = HCID_GET_HANDLE (handle); 1674 1675 btm_ble_connected(bda, handle, HCI_ENCRYPT_MODE_DISABLED, role, bda_type, match); 1676 l2cble_conn_comp (handle, role, bda, bda_type, conn_interval, 1677 conn_latency, conn_timeout); 1678 } 1679 } 1680 else 1681 { 1682 role = HCI_ROLE_UNKNOWN; 1683 1684 if (status != HCI_ERR_DIRECTED_ADVERTISING_TIMEOUT) 1685 { 1686 btm_ble_set_conn_st(BLE_CONN_IDLE); 1687 } 1688 /* this is to work around broadcom firmware problem to handle 1689 * unsolicited command complete event for HCI_LE_Create_Connection_Cancel 1690 * and LE connection complete event with status error code (0x2) 1691 * unknown connection identifier from bluetooth controller 1692 * the workaround is to release the HCI connection to avoid out of sync 1693 * with bluetooth controller, which cause BT can't be turned off. 1694 */ 1695 else if ((status == HCI_ERR_NO_CONNECTION) && 1696 (btm_ble_get_conn_st() != BLE_CONN_CANCEL)) 1697 { 1698 tL2C_LCB *p_lcb; 1699 handle = HCID_GET_HANDLE (handle); 1700 p_lcb = l2cu_find_lcb_by_handle (handle); 1701 if (p_lcb != NULL) 1702 { 1703 l2c_link_hci_disc_comp (handle, HCI_ERR_PEER_USER); 1704 btm_sec_disconnected (handle, HCI_ERR_PEER_USER); 1705 } 1706 } 1707 } 1708 btm_ble_set_conn_st(BLE_CONN_IDLE); 1709 btm_ble_update_mode_operation(role, bda, status); 1710} 1711 1712/***************************************************************************** 1713** Function btm_ble_create_ll_conn_complete 1714** 1715** Description LE connection complete. 1716** 1717******************************************************************************/ 1718void btm_ble_create_ll_conn_complete (UINT8 status) 1719{ 1720 if (status != 0) 1721 { 1722 btm_ble_set_conn_st(BLE_CONN_IDLE); 1723 btm_ble_update_mode_operation(HCI_ROLE_UNKNOWN, NULL, status); 1724 } 1725} 1726/***************************************************************************** 1727** Function btm_proc_smp_cback 1728** 1729** Description This function is the SMP callback handler. 1730** 1731******************************************************************************/ 1732UINT8 btm_proc_smp_cback(tSMP_EVT event, BD_ADDR bd_addr, tSMP_EVT_DATA *p_data) 1733{ 1734 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr); 1735 UINT8 res = 0; 1736 1737 BTM_TRACE_DEBUG ("btm_proc_smp_cback event = %d", event); 1738 1739 if (p_dev_rec != NULL) 1740 { 1741 switch (event) 1742 { 1743 case SMP_IO_CAP_REQ_EVT: 1744 btm_ble_io_capabilities_req(p_dev_rec, (tBTM_LE_IO_REQ *)&p_data->io_req); 1745 break; 1746 1747 case SMP_PASSKEY_REQ_EVT: 1748 case SMP_PASSKEY_NOTIF_EVT: 1749 case SMP_OOB_REQ_EVT: 1750 p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED; 1751 1752 case SMP_SEC_REQUEST_EVT: 1753 memcpy (btm_cb.pairing_bda, bd_addr, BD_ADDR_LEN); 1754 p_dev_rec->sec_state = BTM_SEC_STATE_AUTHENTICATING; 1755 btm_cb.pairing_flags |= BTM_PAIR_FLAGS_LE_ACTIVE; 1756 /* fall through */ 1757 case SMP_COMPLT_EVT: 1758 if (btm_cb.api.p_le_callback) 1759 { 1760 /* the callback function implementation may change the IO capability... */ 1761 BTM_TRACE_DEBUG ("btm_cb.api.p_le_callback=0x%x", btm_cb.api.p_le_callback ); 1762 (*btm_cb.api.p_le_callback) (event, bd_addr, (tBTM_LE_EVT_DATA *)p_data); 1763 } 1764 1765 if (event == SMP_COMPLT_EVT) 1766 { 1767 BTM_TRACE_DEBUG ("evt=SMP_COMPLT_EVT before update sec_level=0x%x sec_flags=0x%x", p_data->cmplt.sec_level , p_dev_rec->sec_flags ); 1768 1769 res = (p_data->cmplt.reason == SMP_SUCCESS) ? BTM_SUCCESS : BTM_ERR_PROCESSING; 1770 1771 BTM_TRACE_DEBUG ("after update result=%d sec_level=0x%x sec_flags=0x%x", 1772 res, p_data->cmplt.sec_level , p_dev_rec->sec_flags ); 1773 1774 btm_sec_dev_rec_cback_event(p_dev_rec, res, TRUE); 1775 1776 if (p_data->cmplt.is_pair_cancel && btm_cb.api.p_bond_cancel_cmpl_callback ) 1777 { 1778 BTM_TRACE_DEBUG ("Pairing Cancel completed"); 1779 (*btm_cb.api.p_bond_cancel_cmpl_callback)(BTM_SUCCESS); 1780 } 1781#if BTM_BLE_CONFORMANCE_TESTING == TRUE 1782 if (res != BTM_SUCCESS) 1783 { 1784 if (!btm_cb.devcb.no_disc_if_pair_fail && p_data->cmplt.reason != SMP_CONN_TOUT) 1785 { 1786 BTM_TRACE_DEBUG ("Pairing failed - Remove ACL"); 1787 btm_remove_acl(bd_addr, BT_TRANSPORT_LE); 1788 } 1789 else 1790 { 1791 BTM_TRACE_DEBUG ("Pairing failed - Not Removing ACL"); 1792 p_dev_rec->sec_state = BTM_SEC_STATE_IDLE; 1793 } 1794 } 1795#else 1796 if (res != BTM_SUCCESS && p_data->cmplt.reason != SMP_CONN_TOUT) 1797 btm_remove_acl(bd_addr, BT_TRANSPORT_LE); 1798#endif 1799 1800 BTM_TRACE_DEBUG ("btm_cb pairing_state=%x pairing_flags=%x pin_code_len=%x", 1801 btm_cb.pairing_state, 1802 btm_cb.pairing_flags, 1803 btm_cb.pin_code_len ); 1804 BTM_TRACE_DEBUG ("btm_cb.pairing_bda %02x:%02x:%02x:%02x:%02x:%02x", 1805 btm_cb.pairing_bda[0], btm_cb.pairing_bda[1], btm_cb.pairing_bda[2], 1806 btm_cb.pairing_bda[3], btm_cb.pairing_bda[4], btm_cb.pairing_bda[5]); 1807 1808 memset (btm_cb.pairing_bda, 0xff, BD_ADDR_LEN); 1809 btm_cb.pairing_state = BTM_PAIR_STATE_IDLE; 1810 btm_cb.pairing_flags = 0; 1811 } 1812 break; 1813 1814 default: 1815 BTM_TRACE_DEBUG ("unknown event = %d", event); 1816 break; 1817 1818 1819 } 1820 } 1821 else 1822 { 1823 BTM_TRACE_ERROR("btm_proc_smp_cback received for unknown device"); 1824 } 1825 1826 return 0; 1827} 1828 1829 #endif /* SMP_INCLUDED */ 1830 1831/******************************************************************************* 1832** 1833** Function BTM_BleDataSignature 1834** 1835** Description This function is called to sign the data using AES128 CMAC 1836** algorith. 1837** 1838** Parameter bd_addr: target device the data to be signed for. 1839** p_text: singing data 1840** len: length of the data to be signed. 1841** signature: output parameter where data signature is going to 1842** be stored. 1843** 1844** Returns TRUE if signing sucessul, otherwise FALSE. 1845** 1846*******************************************************************************/ 1847BOOLEAN BTM_BleDataSignature (BD_ADDR bd_addr, UINT8 *p_text, UINT16 len, 1848 BLE_SIGNATURE signature) 1849{ 1850 BOOLEAN ret = FALSE; 1851#if SMP_INCLUDED == TRUE 1852 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr); 1853 UINT8 *p_buf, *pp; 1854 1855 BT_OCTET16 er; 1856 UINT16 div; 1857 UINT8 temp[4]; /* for (r || DIV) r=1*/ 1858 UINT16 r=1; 1859 UINT8 *p=temp, *p_mac = (UINT8 *)signature; 1860 tSMP_ENC output; 1861 BT_OCTET16 local_csrk; 1862 1863 BTM_TRACE_DEBUG ("BTM_BleDataSignature"); 1864 if (p_rec == NULL) 1865 { 1866 BTM_TRACE_ERROR("data signing can not be done from unknow device"); 1867 } 1868 else 1869 { 1870 if ((p_buf = (UINT8 *)GKI_getbuf((UINT16)(len + 4))) != NULL) 1871 { 1872 BTM_TRACE_DEBUG("Start to generate Local CSRK"); 1873 pp = p_buf; 1874 /* prepare plain text */ 1875 if (p_text) 1876 { 1877 memcpy(p_buf, p_text, len); 1878 pp = (p_buf + len); 1879 } 1880 1881#if BTM_BLE_CONFORMANCE_TESTING == TRUE 1882 if ( btm_cb.devcb.enable_test_local_sign_cntr) 1883 { 1884 BTM_TRACE_DEBUG ("Use Test local counter value from script counter_val=%d", btm_cb.devcb.test_local_sign_cntr); 1885 UINT32_TO_STREAM(pp, btm_cb.devcb.test_local_sign_cntr); 1886 } 1887 else 1888 { 1889 UINT32_TO_STREAM(pp, p_rec->ble.keys.local_counter); 1890 } 1891#else 1892 UINT32_TO_STREAM(pp, p_rec->ble.keys.local_counter); 1893#endif 1894 /* compute local csrk */ 1895 if (btm_get_local_div(bd_addr, &div)) 1896 { 1897 BTM_TRACE_DEBUG ("compute_csrk div=%x", div); 1898 BTM_GetDeviceEncRoot(er); 1899 1900 /* CSRK = d1(ER, DIV, 1) */ 1901 UINT16_TO_STREAM(p, div); 1902 UINT16_TO_STREAM(p, r); 1903 1904 if (!SMP_Encrypt(er, BT_OCTET16_LEN, temp, 4, &output)) 1905 { 1906 BTM_TRACE_ERROR("Local CSRK generation failed "); 1907 } 1908 else 1909 { 1910 BTM_TRACE_DEBUG("local CSRK generation success"); 1911 memcpy((void *)local_csrk, output.param_buf, BT_OCTET16_LEN); 1912 1913 1914#if BTM_BLE_CONFORMANCE_TESTING == TRUE 1915 if (btm_cb.devcb.enable_test_local_sign_cntr) 1916 { 1917 UINT32_TO_STREAM(p_mac, btm_cb.devcb.test_local_sign_cntr); 1918 } 1919 else 1920 { 1921 UINT32_TO_STREAM(p_mac, p_rec->ble.keys.local_counter); 1922 } 1923#else 1924 UINT32_TO_STREAM(p_mac, p_rec->ble.keys.local_counter); 1925#endif 1926 1927 if ((ret = AES_CMAC(local_csrk, p_buf, (UINT16)(len + 4), BTM_CMAC_TLEN_SIZE, p_mac)) == TRUE) 1928 { 1929 btm_ble_increment_sign_ctr(bd_addr, TRUE); 1930 1931#if BTM_BLE_CONFORMANCE_TESTING == TRUE 1932 if ( btm_cb.devcb.enable_test_mac_val) 1933 { 1934 BTM_TRACE_DEBUG ("Use MAC value from script"); 1935 memcpy(p_mac, btm_cb.devcb.test_mac, BTM_CMAC_TLEN_SIZE); 1936 } 1937#endif 1938 } 1939 BTM_TRACE_DEBUG("BTM_BleDataSignature p_mac = %d", p_mac); 1940 BTM_TRACE_DEBUG("p_mac[0] = 0x%02x p_mac[1] = 0x%02x p_mac[2] = 0x%02x p_mac[3] = 0x%02x", 1941 *p_mac, *(p_mac + 1), *(p_mac + 2), *(p_mac + 3)); 1942 BTM_TRACE_DEBUG("p_mac[4] = 0x%02x p_mac[5] = 0x%02x p_mac[6] = 0x%02x p_mac[7] = 0x%02x", 1943 *(p_mac + 4), *(p_mac + 5), *(p_mac + 6), *(p_mac + 7)); 1944 1945 GKI_freebuf(p_buf); 1946 } 1947 } 1948 } 1949 } 1950#endif /* SMP_INCLUDED */ 1951 return ret; 1952} 1953 1954/******************************************************************************* 1955** 1956** Function BTM_BleVerifySignature 1957** 1958** Description This function is called to verify the data signature 1959** 1960** Parameter bd_addr: target device the data to be signed for. 1961** p_orig: original data before signature. 1962** len: length of the signing data 1963** counter: counter used when doing data signing 1964** p_comp: signature to be compared against. 1965 1966** Returns TRUE if signature verified correctly; otherwise FALSE. 1967** 1968*******************************************************************************/ 1969BOOLEAN BTM_BleVerifySignature (BD_ADDR bd_addr, UINT8 *p_orig, UINT16 len, UINT32 counter, 1970 UINT8 *p_comp) 1971{ 1972 BOOLEAN verified = FALSE; 1973#if SMP_INCLUDED == TRUE 1974 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr); 1975 UINT8 p_mac[BTM_CMAC_TLEN_SIZE]; 1976 1977 if (p_rec == NULL || (p_rec && !(p_rec->ble.key_type & BTM_LE_KEY_PCSRK))) 1978 { 1979 BTM_TRACE_ERROR("can not verify signature for unknown device"); 1980 } 1981 else if (counter < p_rec->ble.keys.counter) 1982 { 1983 BTM_TRACE_ERROR("signature received with out dated sign counter"); 1984 } 1985 else if (p_orig == NULL) 1986 { 1987 BTM_TRACE_ERROR("No signature to verify"); 1988 } 1989 else 1990 { 1991 BTM_TRACE_DEBUG ("BTM_BleVerifySignature rcv_cnt=%d >= expected_cnt=%d", counter, p_rec->ble.keys.counter); 1992 1993 if (AES_CMAC(p_rec->ble.keys.csrk, p_orig, len, BTM_CMAC_TLEN_SIZE, p_mac)) 1994 { 1995 if (memcmp(p_mac, p_comp, BTM_CMAC_TLEN_SIZE) == 0) 1996 { 1997 btm_ble_increment_sign_ctr(bd_addr, FALSE); 1998 verified = TRUE; 1999 } 2000 } 2001 } 2002#endif /* SMP_INCLUDED */ 2003 return verified; 2004} 2005 2006/******************************************************************************* 2007** Utility functions for LE device IR/ER generation 2008*******************************************************************************/ 2009/******************************************************************************* 2010** 2011** Function btm_notify_new_key 2012** 2013** Description This function is to notify application new keys have been 2014** generated. 2015** 2016** Returns void 2017** 2018*******************************************************************************/ 2019static void btm_notify_new_key(UINT8 key_type) 2020{ 2021 tBTM_BLE_LOCAL_KEYS *p_locak_keys = NULL; 2022 2023 BTM_TRACE_DEBUG ("btm_notify_new_key key_type=%d", key_type); 2024 2025 if (btm_cb.api.p_le_key_callback) 2026 { 2027 switch (key_type) 2028 { 2029 case BTM_BLE_KEY_TYPE_ID: 2030 BTM_TRACE_DEBUG ("BTM_BLE_KEY_TYPE_ID"); 2031 p_locak_keys = (tBTM_BLE_LOCAL_KEYS *)&btm_cb.devcb.id_keys; 2032 break; 2033 2034 case BTM_BLE_KEY_TYPE_ER: 2035 BTM_TRACE_DEBUG ("BTM_BLE_KEY_TYPE_ER"); 2036 p_locak_keys = (tBTM_BLE_LOCAL_KEYS *)&btm_cb.devcb.er; 2037 break; 2038 2039 default: 2040 BTM_TRACE_ERROR("unknown key type: %d", key_type); 2041 break; 2042 } 2043 if (p_locak_keys != NULL) 2044 (*btm_cb.api.p_le_key_callback) (key_type, p_locak_keys); 2045 } 2046} 2047 2048/******************************************************************************* 2049** 2050** Function btm_ble_process_er2 2051** 2052** Description This function is called when ER is generated, store it in 2053** local control block. 2054** 2055** Returns void 2056** 2057*******************************************************************************/ 2058static void btm_ble_process_er2(tBTM_RAND_ENC *p) 2059{ 2060 BTM_TRACE_DEBUG ("btm_ble_process_er2"); 2061 2062 if (p &&p->opcode == HCI_BLE_RAND) 2063 { 2064 memcpy(&btm_cb.devcb.er[8], p->param_buf, BT_OCTET8_LEN); 2065 btm_notify_new_key(BTM_BLE_KEY_TYPE_ER); 2066 } 2067 else 2068 { 2069 BTM_TRACE_ERROR("Generating ER2 exception."); 2070 memset(&btm_cb.devcb.er, 0, sizeof(BT_OCTET16)); 2071 } 2072} 2073 2074/******************************************************************************* 2075** 2076** Function btm_ble_process_er 2077** 2078** Description This function is called when ER is generated, store it in 2079** local control block. 2080** 2081** Returns void 2082** 2083*******************************************************************************/ 2084static void btm_ble_process_er(tBTM_RAND_ENC *p) 2085{ 2086 BTM_TRACE_DEBUG ("btm_ble_process_er"); 2087 2088 if (p &&p->opcode == HCI_BLE_RAND) 2089 { 2090 memcpy(&btm_cb.devcb.er[0], p->param_buf, BT_OCTET8_LEN); 2091 2092 if (!btsnd_hcic_ble_rand((void *)btm_ble_process_er2)) 2093 { 2094 memset(&btm_cb.devcb.er, 0, sizeof(BT_OCTET16)); 2095 BTM_TRACE_ERROR("Generating ER2 failed."); 2096 } 2097 } 2098 else 2099 { 2100 BTM_TRACE_ERROR("Generating ER1 exception."); 2101 } 2102} 2103 2104/******************************************************************************* 2105** 2106** Function btm_ble_process_irk 2107** 2108** Description This function is called when IRK is generated, store it in 2109** local control block. 2110** 2111** Returns void 2112** 2113*******************************************************************************/ 2114static void btm_ble_process_irk(tSMP_ENC *p) 2115{ 2116 BTM_TRACE_DEBUG ("btm_ble_process_irk"); 2117 if (p &&p->opcode == HCI_BLE_ENCRYPT) 2118 { 2119 memcpy(btm_cb.devcb.id_keys.irk, p->param_buf, BT_OCTET16_LEN); 2120 btm_notify_new_key(BTM_BLE_KEY_TYPE_ID); 2121 } 2122 else 2123 { 2124 BTM_TRACE_ERROR("Generating IRK exception."); 2125 } 2126 2127 /* proceed generate ER */ 2128 if (!btsnd_hcic_ble_rand((void *)btm_ble_process_er)) 2129 { 2130 BTM_TRACE_ERROR("Generating ER failed."); 2131 } 2132} 2133 2134/******************************************************************************* 2135** 2136** Function btm_ble_process_dhk 2137** 2138** Description This function is called when DHK is calculated, store it in 2139** local control block, and proceed to generate ER, a 128-bits 2140** random number. 2141** 2142** Returns void 2143** 2144*******************************************************************************/ 2145static void btm_ble_process_dhk(tSMP_ENC *p) 2146{ 2147#if SMP_INCLUDED == TRUE 2148 UINT8 btm_ble_irk_pt = 0x01; 2149 tSMP_ENC output; 2150 2151 BTM_TRACE_DEBUG ("btm_ble_process_dhk"); 2152 2153 if (p && p->opcode == HCI_BLE_ENCRYPT) 2154 { 2155 memcpy(btm_cb.devcb.id_keys.dhk, p->param_buf, BT_OCTET16_LEN); 2156 BTM_TRACE_DEBUG("BLE DHK generated."); 2157 2158 /* IRK = D1(IR, 1) */ 2159 if (!SMP_Encrypt(btm_cb.devcb.id_keys.ir, BT_OCTET16_LEN, &btm_ble_irk_pt, 2160 1, &output)) 2161 { 2162 /* reset all identity root related key */ 2163 memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS)); 2164 } 2165 else 2166 { 2167 btm_ble_process_irk(&output); 2168 } 2169 } 2170 else 2171 { 2172 /* reset all identity root related key */ 2173 memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS)); 2174 } 2175#endif 2176} 2177 2178/******************************************************************************* 2179** 2180** Function btm_ble_process_ir2 2181** 2182** Description This function is called when IR is generated, proceed to calculate 2183** DHK = Eir({0x03, 0, 0 ...}) 2184** 2185** 2186** Returns void 2187** 2188*******************************************************************************/ 2189static void btm_ble_process_ir2(tBTM_RAND_ENC *p) 2190{ 2191#if SMP_INCLUDED == TRUE 2192 UINT8 btm_ble_dhk_pt = 0x03; 2193 tSMP_ENC output; 2194 2195 BTM_TRACE_DEBUG ("btm_ble_process_ir2"); 2196 2197 if (p && p->opcode == HCI_BLE_RAND) 2198 { 2199 /* remembering in control block */ 2200 memcpy(&btm_cb.devcb.id_keys.ir[8], p->param_buf, BT_OCTET8_LEN); 2201 /* generate DHK= Eir({0x03, 0x00, 0x00 ...}) */ 2202 2203 2204 SMP_Encrypt(btm_cb.devcb.id_keys.ir, BT_OCTET16_LEN, &btm_ble_dhk_pt, 2205 1, &output); 2206 btm_ble_process_dhk(&output); 2207 2208 BTM_TRACE_DEBUG("BLE IR generated."); 2209 } 2210 else 2211 { 2212 memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS)); 2213 } 2214#endif 2215} 2216 2217/******************************************************************************* 2218** 2219** Function btm_ble_process_ir 2220** 2221** Description This function is called when IR is generated, proceed to calculate 2222** DHK = Eir({0x02, 0, 0 ...}) 2223** 2224** 2225** Returns void 2226** 2227*******************************************************************************/ 2228static void btm_ble_process_ir(tBTM_RAND_ENC *p) 2229{ 2230 BTM_TRACE_DEBUG ("btm_ble_process_ir"); 2231 2232 if (p && p->opcode == HCI_BLE_RAND) 2233 { 2234 /* remembering in control block */ 2235 memcpy(btm_cb.devcb.id_keys.ir, p->param_buf, BT_OCTET8_LEN); 2236 2237 if (!btsnd_hcic_ble_rand((void *)btm_ble_process_ir2)) 2238 { 2239 BTM_TRACE_ERROR("Generating IR2 failed."); 2240 memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS)); 2241 } 2242 } 2243} 2244 2245/******************************************************************************* 2246** 2247** Function btm_ble_reset_id 2248** 2249** Description This function is called to reset LE device identity. 2250** 2251** Returns void 2252** 2253*******************************************************************************/ 2254void btm_ble_reset_id( void ) 2255{ 2256 BTM_TRACE_DEBUG ("btm_ble_reset_id"); 2257 2258 /* regenrate Identity Root*/ 2259 if (!btsnd_hcic_ble_rand((void *)btm_ble_process_ir)) 2260 { 2261 BTM_TRACE_DEBUG("Generating IR failed."); 2262 } 2263} 2264 2265 #if BTM_BLE_CONFORMANCE_TESTING == TRUE 2266/******************************************************************************* 2267** 2268** Function btm_ble_set_no_disc_if_pair_fail 2269** 2270** Description This function indicates that whether no disconnect of the ACL 2271** should be used if pairing failed 2272** 2273** Returns void 2274** 2275*******************************************************************************/ 2276void btm_ble_set_no_disc_if_pair_fail(BOOLEAN disable_disc ) 2277{ 2278 BTM_TRACE_DEBUG ("btm_ble_set_disc_enable_if_pair_fail disable_disc=%d", disable_disc); 2279 btm_cb.devcb.no_disc_if_pair_fail = disable_disc; 2280} 2281 2282/******************************************************************************* 2283** 2284** Function btm_ble_set_test_mac_value 2285** 2286** Description This function set test MAC value 2287** 2288** Returns void 2289** 2290*******************************************************************************/ 2291void btm_ble_set_test_mac_value(BOOLEAN enable, UINT8 *p_test_mac_val ) 2292{ 2293 BTM_TRACE_DEBUG ("btm_ble_set_test_mac_value enable=%d", enable); 2294 btm_cb.devcb.enable_test_mac_val = enable; 2295 memcpy(btm_cb.devcb.test_mac, p_test_mac_val, BT_OCTET8_LEN); 2296} 2297 2298/******************************************************************************* 2299** 2300** Function btm_ble_set_test_local_sign_cntr_value 2301** 2302** Description This function set test local sign counter value 2303** 2304** Returns void 2305** 2306*******************************************************************************/ 2307void btm_ble_set_test_local_sign_cntr_value(BOOLEAN enable, UINT32 test_local_sign_cntr ) 2308{ 2309 BTM_TRACE_DEBUG ("btm_ble_set_test_local_sign_cntr_value enable=%d local_sign_cntr=%d", 2310 enable, test_local_sign_cntr); 2311 btm_cb.devcb.enable_test_local_sign_cntr = enable; 2312 btm_cb.devcb.test_local_sign_cntr = test_local_sign_cntr; 2313} 2314 2315/******************************************************************************* 2316** 2317** Function btm_set_random_address 2318** 2319** Description This function set a random address to local controller. 2320** 2321** Returns void 2322** 2323*******************************************************************************/ 2324void btm_set_random_address(BD_ADDR random_bda) 2325{ 2326 tBTM_LE_RANDOM_CB *p_cb = &btm_cb.ble_ctr_cb.addr_mgnt_cb; 2327 BOOLEAN adv_mode = btm_cb.ble_ctr_cb.inq_var.adv_mode ; 2328 2329 BTM_TRACE_DEBUG ("btm_set_random_address"); 2330 2331 if (adv_mode == BTM_BLE_ADV_ENABLE) 2332 btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_DISABLE); 2333 2334 memcpy(p_cb->private_addr, random_bda, BD_ADDR_LEN); 2335 btsnd_hcic_ble_set_random_addr(p_cb->private_addr); 2336 2337 if (adv_mode == BTM_BLE_ADV_ENABLE) 2338 btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_ENABLE); 2339 2340 2341} 2342 2343/******************************************************************************* 2344** 2345** Function btm_ble_set_keep_rfu_in_auth_req 2346** 2347** Description This function indicates if RFU bits have to be kept as is 2348** (by default they have to be set to 0 by the sender). 2349** 2350** Returns void 2351** 2352*******************************************************************************/ 2353void btm_ble_set_keep_rfu_in_auth_req(BOOLEAN keep_rfu) 2354{ 2355 BTM_TRACE_DEBUG ("btm_ble_set_keep_rfu_in_auth_req keep_rfus=%d", keep_rfu); 2356 btm_cb.devcb.keep_rfu_in_auth_req = keep_rfu; 2357} 2358 2359#endif /* BTM_BLE_CONFORMANCE_TESTING */ 2360 2361#endif /* BLE_INCLUDED */ 2362