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 "common/bt_target.h"
26
27 #include <string.h>
28
29 #include "stack/bt_types.h"
30 #include "stack/hcimsgs.h"
31 #include "stack/btu.h"
32 #include "btm_int.h"
33 #include "stack/btm_ble_api.h"
34 #include "stack/smp_api.h"
35 #include "l2c_int.h"
36 #include "stack/gap_api.h"
37 //#include "bt_utils.h"
38 #include "device/controller.h"
39
40 //#define LOG_TAG "bt_btm_ble"
41 //#include "osi/include/log.h"
42 #if BLE_INCLUDED == TRUE
43 extern void BTM_UpdateAddrInfor(uint8_t addr_type, BD_ADDR bda);
44 #if SMP_INCLUDED == TRUE
45 // The temp variable to pass parameter between functions when in the connected event callback.
46 static BOOLEAN temp_enhanced = FALSE;
47 extern BOOLEAN aes_cipher_msg_auth_code(BT_OCTET16 key, UINT8 *input, UINT16 length,
48 UINT16 tlen, UINT8 *p_signature);
49 extern void smp_link_encrypted(BD_ADDR bda, UINT8 encr_enable);
50 extern BOOLEAN smp_proc_ltk_request(BD_ADDR bda);
51 #endif
52 extern void gatt_notify_enc_cmpl(BD_ADDR bd_addr);
53 /*******************************************************************************/
54 /* External Function to be called by other modules */
55 /*******************************************************************************/
56 /********************************************************
57 **
58 ** Function BTM_SecAddBleDevice
59 **
60 ** Description Add/modify device. This function will be normally called
61 ** during host startup to restore all required information
62 ** for a LE device stored in the NVRAM.
63 **
64 ** Parameters: bd_addr - BD address of the peer
65 ** bd_name - Name of the peer device. NULL if unknown.
66 ** dev_type - Remote device's device type.
67 ** addr_type - LE device address type.
68 ** auth_mode - auth mode
69 **
70 ** Returns TRUE if added OK, else FALSE
71 **
72 *******************************************************************************/
73 #if (SMP_INCLUDED == TRUE)
BTM_SecAddBleDevice(BD_ADDR bd_addr,BD_NAME bd_name,tBT_DEVICE_TYPE dev_type,tBLE_ADDR_TYPE addr_type,UINT32 auth_mode)74 BOOLEAN BTM_SecAddBleDevice (BD_ADDR bd_addr, BD_NAME bd_name, tBT_DEVICE_TYPE dev_type,
75 tBLE_ADDR_TYPE addr_type, UINT32 auth_mode)
76 {
77 tBTM_SEC_DEV_REC *p_dev_rec;
78 tBTM_INQ_INFO *p_info = NULL;
79
80 BTM_TRACE_DEBUG ("BTM_SecAddBleDevice dev_type=0x%x", dev_type);
81 p_dev_rec = btm_find_dev (bd_addr);
82
83 if (!p_dev_rec) {
84 BTM_TRACE_DEBUG("Add a new device");
85
86 /* There is no device record, allocate one.
87 * If we can not find an empty spot for this one, let it fail. */
88 if (list_length(btm_cb.p_sec_dev_rec_list) < BTM_SEC_MAX_DEVICE_RECORDS) {
89 p_dev_rec = (tBTM_SEC_DEV_REC *)osi_malloc(sizeof(tBTM_SEC_DEV_REC));
90 if(p_dev_rec) {
91 list_append(btm_cb.p_sec_dev_rec_list, p_dev_rec);
92 BTM_TRACE_DEBUG ("allocate a new dev rec idx=0x%x\n", list_length(btm_cb.p_sec_dev_rec_list));
93
94 /* Mark this record as in use and initialize */
95 memset (p_dev_rec, 0, sizeof (tBTM_SEC_DEV_REC));
96 p_dev_rec->sec_flags = BTM_SEC_IN_USE;
97 memcpy (p_dev_rec->bd_addr, bd_addr, BD_ADDR_LEN);
98 p_dev_rec->hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_BR_EDR);
99 p_dev_rec->ble_hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_LE);
100
101 /* update conn params, use default value for background connection params */
102 p_dev_rec->conn_params.min_conn_int =
103 p_dev_rec->conn_params.max_conn_int =
104 p_dev_rec->conn_params.supervision_tout =
105 p_dev_rec->conn_params.slave_latency = BTM_BLE_CONN_PARAM_UNDEF;
106
107 BTM_TRACE_DEBUG ("hci_handl=0x%x ", p_dev_rec->ble_hci_handle );
108 }
109 }
110
111 if (!p_dev_rec) {
112 return (FALSE);
113 }
114 } else {
115 BTM_TRACE_DEBUG("Device already exist");
116 }
117
118 memset(p_dev_rec->sec_bd_name, 0, sizeof(tBTM_BD_NAME));
119
120 if (bd_name && bd_name[0]) {
121 p_dev_rec->sec_flags |= BTM_SEC_NAME_KNOWN;
122 BCM_STRNCPY_S ((char *)p_dev_rec->sec_bd_name, (char *)bd_name, BTM_MAX_REM_BD_NAME_LEN);
123 }
124 p_dev_rec->device_type |= dev_type;
125 p_dev_rec->ble.ble_addr_type = addr_type;
126 p_dev_rec->ble.auth_mode = auth_mode;
127
128 memcpy (p_dev_rec->ble.pseudo_addr, bd_addr, BD_ADDR_LEN);
129 /* sync up with the Inq Data base*/
130 p_info = BTM_InqDbRead(bd_addr);
131 if (p_info) {
132 p_info->results.ble_addr_type = p_dev_rec->ble.ble_addr_type ;
133 p_info->results.device_type = p_dev_rec->device_type;
134 BTM_TRACE_DEBUG ("InqDb device_type =0x%x addr_type=0x%x",
135 p_info->results.device_type, p_info->results.ble_addr_type);
136 }
137 return (TRUE);
138 }
139 #endif ///SMP_INCLUDED == TRUE
140
141
142 /*******************************************************************************
143 **
144 ** Function BTM_SecAddBleKey
145 **
146 ** Description Add/modify LE device information. This function will be
147 ** normally called during host startup to restore all required
148 ** information stored in the NVRAM.
149 **
150 ** Parameters: bd_addr - BD address of the peer
151 ** p_le_key - LE key values.
152 ** key_type - LE SMP key type.
153 *
154 ** Returns TRUE if added OK, else FALSE
155 **
156 *******************************************************************************/
157 #if SMP_INCLUDED == TRUE
BTM_SecAddBleKey(BD_ADDR bd_addr,tBTM_LE_KEY_VALUE * p_le_key,tBTM_LE_KEY_TYPE key_type)158 BOOLEAN BTM_SecAddBleKey (BD_ADDR bd_addr, tBTM_LE_KEY_VALUE *p_le_key, tBTM_LE_KEY_TYPE key_type)
159 {
160 tBTM_SEC_DEV_REC *p_dev_rec;
161 BTM_TRACE_DEBUG ("BTM_SecAddBleKey");
162 p_dev_rec = btm_find_dev (bd_addr);
163 if (!p_dev_rec || !p_le_key ||
164 (key_type != BTM_LE_KEY_PENC && key_type != BTM_LE_KEY_PID &&
165 key_type != BTM_LE_KEY_PCSRK && key_type != BTM_LE_KEY_LENC &&
166 key_type != BTM_LE_KEY_LCSRK && key_type != BTM_LE_KEY_LID)) {
167 BTM_TRACE_WARNING ("BTM_SecAddBleKey() Wrong Type, or No Device record \
168 for bdaddr: %08x%04x, Type: %d",
169 (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
170 (bd_addr[4] << 8) + bd_addr[5], key_type);
171 return (FALSE);
172 }
173
174 BTM_TRACE_DEBUG ("BTM_SecAddLeKey() BDA: %08x%04x, Type: 0x%02x",
175 (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
176 (bd_addr[4] << 8) + bd_addr[5], key_type);
177
178 btm_sec_save_le_key (bd_addr, key_type, p_le_key, FALSE);
179
180 #if (BLE_PRIVACY_SPT == TRUE)
181 if (key_type == BTM_LE_KEY_PID || key_type == BTM_LE_KEY_LID) {
182 btm_ble_resolving_list_load_dev (p_dev_rec);
183 }
184 #endif
185
186
187 return (TRUE);
188 }
189 #endif
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 *******************************************************************************/
BTM_BleLoadLocalKeys(UINT8 key_type,tBTM_BLE_LOCAL_KEYS * p_key)205 void BTM_BleLoadLocalKeys(UINT8 key_type, tBTM_BLE_LOCAL_KEYS *p_key)
206 {
207 tBTM_DEVCB *p_devcb = &btm_cb.devcb;
208 BTM_TRACE_DEBUG ("%s", __func__);
209 if (p_key != NULL) {
210 switch (key_type) {
211 case BTM_BLE_KEY_TYPE_ID:
212 memcpy(&p_devcb->id_keys, &p_key->id_keys, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
213 break;
214
215 case BTM_BLE_KEY_TYPE_ER:
216 memcpy(p_devcb->ble_encryption_key_value, p_key->er, sizeof(BT_OCTET16));
217 break;
218
219 default:
220 BTM_TRACE_ERROR("unknow local key type: %d", key_type);
221 break;
222 }
223 }
224 }
225
226 /*******************************************************************************
227 **
228 ** Function BTM_GetDeviceEncRoot
229 **
230 ** Description This function is called to read the local device encryption
231 ** root.
232 **
233 ** Returns void
234 ** the local device ER is copied into ble_encr_key_value
235 **
236 *******************************************************************************/
BTM_GetDeviceEncRoot(BT_OCTET16 ble_encr_key_value)237 void BTM_GetDeviceEncRoot (BT_OCTET16 ble_encr_key_value)
238 {
239 BTM_TRACE_DEBUG ("%s", __func__);
240 memcpy (ble_encr_key_value, btm_cb.devcb.ble_encryption_key_value, BT_OCTET16_LEN);
241 }
242
243 /*******************************************************************************
244 **
245 ** Function BTM_GetDeviceIDRoot
246 **
247 ** Description This function is called to read the local device identity
248 ** root.
249 **
250 ** Returns void
251 ** the local device IR is copied into irk
252 **
253 *******************************************************************************/
BTM_GetDeviceIDRoot(BT_OCTET16 irk)254 void BTM_GetDeviceIDRoot (BT_OCTET16 irk)
255 {
256 BTM_TRACE_DEBUG ("BTM_GetDeviceIDRoot ");
257
258 memcpy (irk, btm_cb.devcb.id_keys.irk, BT_OCTET16_LEN);
259 }
260
261 /*******************************************************************************
262 **
263 ** Function BTM_GetDeviceDHK
264 **
265 ** Description This function is called to read the local device DHK.
266 **
267 ** Returns void
268 ** the local device DHK is copied into dhk
269 **
270 *******************************************************************************/
BTM_GetDeviceDHK(BT_OCTET16 dhk)271 void BTM_GetDeviceDHK (BT_OCTET16 dhk)
272 {
273 BTM_TRACE_DEBUG ("BTM_GetDeviceDHK");
274 memcpy (dhk, btm_cb.devcb.id_keys.dhk, BT_OCTET16_LEN);
275 }
276
277 /*******************************************************************************
278 **
279 ** Function BTM_ReadConnectionAddr
280 **
281 ** Description This function is called to get the local device address information
282 ** .
283 **
284 ** Returns void
285 **
286 *******************************************************************************/
BTM_ReadConnectionAddr(BD_ADDR remote_bda,BD_ADDR local_conn_addr,tBLE_ADDR_TYPE * p_addr_type)287 void BTM_ReadConnectionAddr (BD_ADDR remote_bda, BD_ADDR local_conn_addr, tBLE_ADDR_TYPE *p_addr_type)
288 {
289 tACL_CONN *p_acl = btm_bda_to_acl(remote_bda, BT_TRANSPORT_LE);
290
291 if (p_acl == NULL) {
292 BTM_TRACE_ERROR("No connection exist!");
293 return;
294 }
295 memcpy(local_conn_addr, p_acl->conn_addr, BD_ADDR_LEN);
296 * p_addr_type = p_acl->conn_addr_type;
297
298 BTM_TRACE_DEBUG ("BTM_ReadConnectionAddr address type: %d addr: 0x%02x",
299 p_acl->conn_addr_type, p_acl->conn_addr[0]);
300 }
301
302 /*******************************************************************************
303 **
304 ** Function BTM_IsBleConnection
305 **
306 ** Description This function is called to check if the connection handle
307 ** for an LE link
308 **
309 ** Returns TRUE if connection is LE link, otherwise FALSE.
310 **
311 *******************************************************************************/
BTM_IsBleConnection(UINT16 conn_handle)312 BOOLEAN BTM_IsBleConnection (UINT16 conn_handle)
313 {
314 #if (BLE_INCLUDED == TRUE)
315 tACL_CONN *p;
316
317 BTM_TRACE_API ("BTM_IsBleConnection: conn_handle: %d", conn_handle);
318
319 p = btm_handle_to_acl(conn_handle);
320 if (!p) {
321 return FALSE;
322 }
323 return (p->transport == BT_TRANSPORT_LE);
324 #else
325 return FALSE;
326 #endif
327 }
328
329 /*******************************************************************************
330 **
331 ** Function BTM_ReadRemoteConnectionAddr
332 **
333 ** Description This function is read the remote device address currently used
334 **
335 ** Parameters pseudo_addr: pseudo random address available
336 ** conn_addr:connection address used
337 ** p_addr_type : BD Address type, Public or Random of the address used
338 **
339 ** Returns BOOLEAN , TRUE if connection to remote device exists, else FALSE
340 **
341 *******************************************************************************/
BTM_ReadRemoteConnectionAddr(BD_ADDR pseudo_addr,BD_ADDR conn_addr,tBLE_ADDR_TYPE * p_addr_type)342 BOOLEAN BTM_ReadRemoteConnectionAddr(BD_ADDR pseudo_addr, BD_ADDR conn_addr,
343 tBLE_ADDR_TYPE *p_addr_type)
344 {
345 BOOLEAN st = TRUE;
346 #if (BLE_PRIVACY_SPT == TRUE)
347 tACL_CONN *p = btm_bda_to_acl (pseudo_addr, BT_TRANSPORT_LE);
348
349 if (p == NULL) {
350 BTM_TRACE_ERROR("BTM_ReadRemoteConnectionAddr can not find connection"
351 " with matching address");
352 return FALSE;
353 }
354
355 memcpy(conn_addr, p->active_remote_addr, BD_ADDR_LEN);
356 *p_addr_type = p->active_remote_addr_type;
357 #else
358 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(pseudo_addr);
359
360 memcpy(conn_addr, pseudo_addr, BD_ADDR_LEN);
361 if (p_dev_rec != NULL) {
362 *p_addr_type = p_dev_rec->ble.ble_addr_type;
363 }
364 #endif
365 return st;
366
367 }
368 /*******************************************************************************
369 **
370 ** Function BTM_SecurityGrant
371 **
372 ** Description This function is called to grant security process.
373 **
374 ** Parameters bd_addr - peer device bd address.
375 ** res - result of the operation BTM_SUCCESS if success.
376 ** Otherwise, BTM_REPEATED_ATTEMPTS is too many attempts.
377 **
378 ** Returns None
379 **
380 *******************************************************************************/
BTM_SecurityGrant(BD_ADDR bd_addr,UINT8 res)381 void BTM_SecurityGrant(BD_ADDR bd_addr, UINT8 res)
382 {
383 #if SMP_INCLUDED == TRUE
384 tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_REPEATED_ATTEMPTS;
385 BTM_TRACE_DEBUG ("BTM_SecurityGrant");
386 SMP_SecurityGrant(bd_addr, res_smp);
387 #endif
388 }
389
390 /*******************************************************************************
391 **
392 ** Function BTM_BlePasskeyReply
393 **
394 ** Description This function is called after Security Manager submitted
395 ** passkey request to the application.
396 **
397 ** Parameters: bd_addr - Address of the device for which passkey was requested
398 ** res - result of the operation BTM_SUCCESS if success
399 ** key_len - length in bytes of the Passkey
400 ** p_passkey - pointer to array with the passkey
401 ** trusted_mask - bitwise OR of trusted services (array of UINT32)
402 **
403 *******************************************************************************/
BTM_BlePasskeyReply(BD_ADDR bd_addr,UINT8 res,UINT32 passkey)404 void BTM_BlePasskeyReply (BD_ADDR bd_addr, UINT8 res, UINT32 passkey)
405 {
406 #if SMP_INCLUDED == TRUE
407 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
408 tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_PASSKEY_ENTRY_FAIL;
409
410 if (p_dev_rec == NULL) {
411 BTM_TRACE_ERROR("Passkey reply to Unknown device");
412 return;
413 }
414
415 p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
416 BTM_TRACE_DEBUG ("BTM_BlePasskeyReply");
417 SMP_PasskeyReply(bd_addr, res_smp, passkey);
418 #endif
419 }
420
421 /*******************************************************************************
422 **
423 ** Function BTM_BleSetStaticPasskey
424 **
425 ** Description This function is called to set static passkey
426 **
427 **
428 ** Parameters: add - set static passkey when add is TRUE
429 ** clear static passkey when add is FALSE
430 ** passkey - static passkey
431 **
432 **
433 *******************************************************************************/
BTM_BleSetStaticPasskey(BOOLEAN add,UINT32 passkey)434 void BTM_BleSetStaticPasskey(BOOLEAN add, UINT32 passkey)
435 {
436 #if SMP_INCLUDED == TRUE
437 SMP_SetStaticPasskey(add, passkey);
438 #endif
439 }
440
441 /*******************************************************************************
442 **
443 ** Function BTM_BleConfirmReply
444 **
445 ** Description This function is called after Security Manager submitted
446 ** numeric comparison request to the application.
447 **
448 ** Parameters: bd_addr - Address of the device with which numeric
449 ** comparison was requested
450 ** res - comparison result BTM_SUCCESS if success
451 **
452 *******************************************************************************/
453 #if (SMP_INCLUDED == TRUE)
BTM_BleConfirmReply(BD_ADDR bd_addr,UINT8 res)454 void BTM_BleConfirmReply (BD_ADDR bd_addr, UINT8 res)
455 {
456 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
457 tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_PASSKEY_ENTRY_FAIL;
458
459 if (p_dev_rec == NULL) {
460 BTM_TRACE_ERROR("Passkey reply to Unknown device");
461 return;
462 }
463
464 p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
465 BTM_TRACE_DEBUG ("%s\n", __func__);
466 SMP_ConfirmReply(bd_addr, res_smp);
467 }
468 #endif ///SMP_INCLUDED == TRUE
469
470 /*******************************************************************************
471 **
472 ** Function BTM_BleOobDataReply
473 **
474 ** Description This function is called to provide the OOB data for
475 ** SMP in response to BTM_LE_OOB_REQ_EVT
476 **
477 ** Parameters: bd_addr - Address of the peer device
478 ** res - result of the operation SMP_SUCCESS if success
479 ** p_data - simple pairing Randomizer C.
480 **
481 *******************************************************************************/
BTM_BleOobDataReply(BD_ADDR bd_addr,UINT8 res,UINT8 len,UINT8 * p_data)482 void BTM_BleOobDataReply(BD_ADDR bd_addr, UINT8 res, UINT8 len, UINT8 *p_data)
483 {
484 #if SMP_INCLUDED == TRUE
485 tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_OOB_FAIL;
486 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
487
488 BTM_TRACE_DEBUG ("BTM_BleOobDataReply");
489
490 if (p_dev_rec == NULL) {
491 BTM_TRACE_ERROR("BTM_BleOobDataReply() to Unknown device");
492 return;
493 }
494
495 p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
496 SMP_OobDataReply(bd_addr, res_smp, len, p_data);
497 #endif
498 }
499
500 /*******************************************************************************
501 **
502 ** Function BTM_BleSecureConnectionOobDataReply
503 **
504 ** Description This function is called to provide the OOB data for
505 ** SMP in response to BTM_LE_SC_OOB_REQ_EVT when secure connection
506 **
507 ** Parameters: bd_addr - Address of the peer device
508 ** p_c - pointer to Confirmation
509 ** p_r - pointer to Randomizer
510 **
511 *******************************************************************************/
BTM_BleSecureConnectionOobDataReply(BD_ADDR bd_addr,UINT8 * p_c,UINT8 * p_r)512 void BTM_BleSecureConnectionOobDataReply(BD_ADDR bd_addr, UINT8 *p_c, UINT8 *p_r)
513 {
514 #if SMP_INCLUDED == TRUE
515 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
516
517 BTM_TRACE_DEBUG ("%s", __func__);
518
519 if (p_dev_rec == NULL) {
520 BTM_TRACE_ERROR("%s Unknown device", __func__);
521 return;
522 }
523
524 p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
525
526 tSMP_SC_OOB_DATA oob;
527 memset(&oob, 0, sizeof(tSMP_SC_OOB_DATA));
528
529 oob.peer_oob_data.present = true;
530 memcpy(&oob.peer_oob_data.commitment, p_c, BT_OCTET16_LEN);
531 memcpy(&oob.peer_oob_data.randomizer, p_r, BT_OCTET16_LEN);
532 oob.peer_oob_data.addr_rcvd_from.type = p_dev_rec->ble.ble_addr_type;
533 memcpy(oob.peer_oob_data.addr_rcvd_from.bda, bd_addr, BD_ADDR_LEN);
534
535 SMP_SecureConnectionOobDataReply((UINT8 *)&oob);
536 #endif
537 }
538
539 /*******************************************************************************
540 **
541 ** Function BTM_BleSecureConnectionCreateOobData
542 **
543 ** Description This function is called to create the OOB data for
544 ** SMP when secure connection
545 **
546 *******************************************************************************/
BTM_BleSecureConnectionCreateOobData(void)547 void BTM_BleSecureConnectionCreateOobData(void)
548 {
549 #if SMP_INCLUDED == TRUE
550 BTM_TRACE_DEBUG ("%s", __func__);
551
552 SMP_CreateLocalSecureConnectionsOobData();
553 #endif
554 }
555
556 /******************************************************************************
557 **
558 ** Function BTM_BleSetConnScanParams
559 **
560 ** Description Set scan parameter used in BLE connection request
561 **
562 ** Parameters: scan_interval: scan interval
563 ** scan_window: scan window
564 **
565 ** Returns void
566 **
567 *******************************************************************************/
BTM_BleSetConnScanParams(UINT32 scan_interval,UINT32 scan_window)568 void BTM_BleSetConnScanParams (UINT32 scan_interval, UINT32 scan_window)
569 {
570 #if SMP_INCLUDED == TRUE
571 tBTM_BLE_CB *p_ble_cb = &btm_cb.ble_ctr_cb;
572 BOOLEAN new_param = FALSE;
573
574 if (BTM_BLE_ISVALID_PARAM(scan_interval, BTM_BLE_SCAN_INT_MIN, BTM_BLE_SCAN_INT_MAX) &&
575 BTM_BLE_ISVALID_PARAM(scan_window, BTM_BLE_SCAN_WIN_MIN, BTM_BLE_SCAN_WIN_MAX)) {
576 if (p_ble_cb->scan_int != scan_interval) {
577 p_ble_cb->scan_int = scan_interval;
578 new_param = TRUE;
579 }
580
581 if (p_ble_cb->scan_win != scan_window) {
582 p_ble_cb->scan_win = scan_window;
583 new_param = TRUE;
584 }
585
586 if (new_param && p_ble_cb->conn_state == BLE_BG_CONN) {
587 btm_ble_suspend_bg_conn();
588 }
589 } else {
590 BTM_TRACE_ERROR("Illegal Connection Scan Parameters");
591 }
592 #endif
593 }
594
595 /********************************************************
596 **
597 ** Function BTM_BleSetPrefConnParams
598 **
599 ** Description Set a peripheral's preferred connection parameters
600 **
601 ** Parameters: bd_addr - BD address of the peripheral
602 ** scan_interval: scan interval
603 ** scan_window: scan window
604 ** min_conn_int - minimum preferred connection interval
605 ** max_conn_int - maximum preferred connection interval
606 ** slave_latency - preferred slave latency
607 ** supervision_tout - preferred supervision timeout
608 **
609 ** Returns void
610 **
611 *******************************************************************************/
BTM_BleSetPrefConnParams(BD_ADDR bd_addr,UINT16 min_conn_int,UINT16 max_conn_int,UINT16 slave_latency,UINT16 supervision_tout)612 void BTM_BleSetPrefConnParams (BD_ADDR bd_addr,
613 UINT16 min_conn_int, UINT16 max_conn_int,
614 UINT16 slave_latency, UINT16 supervision_tout)
615 {
616 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (bd_addr);
617
618 BTM_TRACE_API ("BTM_BleSetPrefConnParams min: %u max: %u latency: %u \
619 tout: %u",
620 min_conn_int, max_conn_int, slave_latency, supervision_tout);
621
622 if (BTM_BLE_ISVALID_PARAM(min_conn_int, BTM_BLE_CONN_INT_MIN, BTM_BLE_CONN_INT_MAX) &&
623 BTM_BLE_ISVALID_PARAM(max_conn_int, BTM_BLE_CONN_INT_MIN, BTM_BLE_CONN_INT_MAX) &&
624 BTM_BLE_ISVALID_PARAM(supervision_tout, BTM_BLE_CONN_SUP_TOUT_MIN, BTM_BLE_CONN_SUP_TOUT_MAX) &&
625 (slave_latency <= BTM_BLE_CONN_LATENCY_MAX || slave_latency == BTM_BLE_CONN_PARAM_UNDEF)) {
626 if (p_dev_rec) {
627 /* expect conn int and stout and slave latency to be updated all together */
628 if (min_conn_int != BTM_BLE_CONN_PARAM_UNDEF || max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) {
629 if (min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) {
630 p_dev_rec->conn_params.min_conn_int = min_conn_int;
631 } else {
632 p_dev_rec->conn_params.min_conn_int = max_conn_int;
633 }
634
635 if (max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) {
636 p_dev_rec->conn_params.max_conn_int = max_conn_int;
637 } else {
638 p_dev_rec->conn_params.max_conn_int = min_conn_int;
639 }
640
641 if (slave_latency != BTM_BLE_CONN_PARAM_UNDEF) {
642 p_dev_rec->conn_params.slave_latency = slave_latency;
643 } else {
644 p_dev_rec->conn_params.slave_latency = BTM_BLE_CONN_SLAVE_LATENCY_DEF;
645 }
646
647 if (supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) {
648 p_dev_rec->conn_params.supervision_tout = supervision_tout;
649 } else {
650 p_dev_rec->conn_params.supervision_tout = BTM_BLE_CONN_TIMEOUT_DEF;
651 }
652
653 }
654
655 } else {
656 BTM_TRACE_ERROR("Unknown Device, setting rejected");
657 }
658 } else {
659 BTM_TRACE_ERROR("Illegal Connection Parameters");
660 }
661 }
662
663 /*******************************************************************************
664 **
665 ** Function BTM_ReadDevInfo
666 **
667 ** Description This function is called to read the device/address type
668 ** of BD address.
669 **
670 ** Parameter remote_bda: remote device address
671 ** p_dev_type: output parameter to read the device type.
672 ** p_addr_type: output parameter to read the address type.
673 **
674 *******************************************************************************/
BTM_ReadDevInfo(BD_ADDR remote_bda,tBT_DEVICE_TYPE * p_dev_type,tBLE_ADDR_TYPE * p_addr_type)675 void BTM_ReadDevInfo (BD_ADDR remote_bda, tBT_DEVICE_TYPE *p_dev_type, tBLE_ADDR_TYPE *p_addr_type)
676 {
677 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (remote_bda);
678 tBTM_INQ_INFO *p_inq_info = BTM_InqDbRead(remote_bda);
679 tBLE_ADDR_TYPE temp_addr_type = (*p_addr_type);
680
681 *p_addr_type = BLE_ADDR_PUBLIC;
682
683 if (!p_dev_rec) {
684 *p_dev_type = BT_DEVICE_TYPE_BREDR;
685 /* Check with the BT manager if details about remote device are known */
686 if (p_inq_info != NULL) {
687 *p_dev_type = p_inq_info->results.device_type ;
688 *p_addr_type = p_inq_info->results.ble_addr_type;
689 } else {
690 if(temp_addr_type <= BLE_ADDR_TYPE_MAX) {
691 *p_addr_type = temp_addr_type;
692 } else {
693 /* unknown device, assume BR/EDR */
694 BTM_TRACE_DEBUG ("btm_find_dev_type - unknown device, BR/EDR assumed");
695 }
696 }
697 } else { /* there is a security device record exisitng */
698 /* new inquiry result, overwrite device type in security device record */
699 if (p_inq_info) {
700 p_dev_rec->device_type = p_inq_info->results.device_type;
701 p_dev_rec->ble.ble_addr_type = p_inq_info->results.ble_addr_type;
702 }
703 if (memcmp(p_dev_rec->bd_addr, remote_bda, BD_ADDR_LEN) == 0 &&
704 memcmp(p_dev_rec->ble.pseudo_addr, remote_bda, BD_ADDR_LEN) == 0) {
705 *p_dev_type = p_dev_rec->device_type;
706 *p_addr_type = p_dev_rec->ble.ble_addr_type;
707 } else if (memcmp(p_dev_rec->ble.pseudo_addr, remote_bda, BD_ADDR_LEN) == 0) {
708 *p_dev_type = BT_DEVICE_TYPE_BLE;
709 *p_addr_type = p_dev_rec->ble.ble_addr_type;
710 } else { /* matching static adddress only */
711 *p_dev_type = BT_DEVICE_TYPE_BREDR;
712 *p_addr_type = BLE_ADDR_PUBLIC;
713 }
714
715 }
716
717 BTM_TRACE_DEBUG ("btm_find_dev_type - device_type = %d addr_type = %d", *p_dev_type , *p_addr_type);
718 }
719 #endif ///BLE_INCLUDED == TRUE
720
721 /*******************************************************************************
722 **
723 ** Function BTM_ReadConnectedTransportAddress
724 **
725 ** Description This function is called to read the paired device/address type of other device paired
726 ** corresponding to the BD_address
727 **
728 ** Parameter remote_bda: remote device address, carry out the transport address
729 ** transport: active transport
730 **
731 ** Return TRUE if an active link is identified; FALSE otherwise
732 **
733 *******************************************************************************/
BTM_ReadConnectedTransportAddress(BD_ADDR remote_bda,tBT_TRANSPORT transport)734 BOOLEAN BTM_ReadConnectedTransportAddress(BD_ADDR remote_bda, tBT_TRANSPORT transport)
735 {
736 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(remote_bda);
737
738 /* if no device can be located, return */
739 if (p_dev_rec == NULL) {
740 memset(remote_bda, 0, BD_ADDR_LEN);
741 return FALSE;
742 }
743
744 if (transport == BT_TRANSPORT_BR_EDR) {
745 if (btm_bda_to_acl(p_dev_rec->bd_addr, transport) != NULL) {
746 memcpy(remote_bda, p_dev_rec->bd_addr, BD_ADDR_LEN);
747 return TRUE;
748 } else if (p_dev_rec->device_type & BT_DEVICE_TYPE_BREDR) {
749 memcpy(remote_bda, p_dev_rec->bd_addr, BD_ADDR_LEN);
750 } else {
751 memset(remote_bda, 0, BD_ADDR_LEN);
752 }
753 return FALSE;
754 }
755 #if (BLE_INCLUDED == TRUE)
756 if (transport == BT_TRANSPORT_LE) {
757 memcpy(remote_bda, p_dev_rec->ble.pseudo_addr, BD_ADDR_LEN);
758 if (btm_bda_to_acl(p_dev_rec->ble.pseudo_addr, transport) != NULL) {
759 return TRUE;
760 } else {
761 return FALSE;
762 }
763 }
764 #endif ///BLE_INCLUDED == TRUE
765 return FALSE;
766 }
767
768 #if (BLE_INCLUDED == TRUE)
769 /*******************************************************************************
770 **
771 ** Function BTM_BleReceiverTest
772 **
773 ** Description This function is called to start the LE Receiver test
774 **
775 ** Parameter rx_freq - Frequency Range
776 ** p_cmd_cmpl_cback - Command Complete callback
777 **
778 *******************************************************************************/
BTM_BleReceiverTest(UINT8 rx_freq,tBTM_CMPL_CB * p_cmd_cmpl_cback)779 void BTM_BleReceiverTest(UINT8 rx_freq, tBTM_CMPL_CB *p_cmd_cmpl_cback)
780 {
781 btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback;
782
783 if (btsnd_hcic_ble_receiver_test(rx_freq) == FALSE) {
784 BTM_TRACE_ERROR("%s: Unable to Trigger LE receiver test", __FUNCTION__);
785 }
786 }
787
788 /*******************************************************************************
789 **
790 ** Function BTM_BleTransmitterTest
791 **
792 ** Description This function is called to start the LE Transmitter test
793 **
794 ** Parameter tx_freq - Frequency Range
795 ** test_data_len - Length in bytes of payload data in each packet
796 ** packet_payload - Pattern to use in the payload
797 ** p_cmd_cmpl_cback - Command Complete callback
798 **
799 *******************************************************************************/
BTM_BleTransmitterTest(UINT8 tx_freq,UINT8 test_data_len,UINT8 packet_payload,tBTM_CMPL_CB * p_cmd_cmpl_cback)800 void BTM_BleTransmitterTest(UINT8 tx_freq, UINT8 test_data_len,
801 UINT8 packet_payload, tBTM_CMPL_CB *p_cmd_cmpl_cback)
802 {
803 btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback;
804 if (btsnd_hcic_ble_transmitter_test(tx_freq, test_data_len, packet_payload) == FALSE) {
805 BTM_TRACE_ERROR("%s: Unable to Trigger LE transmitter test", __FUNCTION__);
806 }
807 }
808
809 /*******************************************************************************
810 **
811 ** Function BTM_BleTestEnd
812 **
813 ** Description This function is called to stop the in-progress TX or RX test
814 **
815 ** Parameter p_cmd_cmpl_cback - Command complete callback
816 **
817 *******************************************************************************/
BTM_BleTestEnd(tBTM_CMPL_CB * p_cmd_cmpl_cback)818 void BTM_BleTestEnd(tBTM_CMPL_CB *p_cmd_cmpl_cback)
819 {
820 btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback;
821
822 if (btsnd_hcic_ble_test_end() == FALSE) {
823 BTM_TRACE_ERROR("%s: Unable to End the LE TX/RX test", __FUNCTION__);
824 }
825 }
826
827 /*******************************************************************************
828 ** Internal Functions
829 *******************************************************************************/
btm_ble_test_command_complete(UINT8 * p)830 void btm_ble_test_command_complete(UINT8 *p)
831 {
832 tBTM_CMPL_CB *p_cb = btm_cb.devcb.p_le_test_cmd_cmpl_cb;
833
834 btm_cb.devcb.p_le_test_cmd_cmpl_cb = NULL;
835
836 if (p_cb) {
837 (*p_cb)(p);
838 }
839 }
840
841
842 #if (BLE_50_FEATURE_SUPPORT == TRUE)
843 /*******************************************************************************
844 **
845 ** Function BTM_BleEnhancedReceiverTest
846 **
847 ** Description This function is called to start the LE Enhanced Receiver test
848 **
849 ** Parameter rx_freq - Frequency Range
850 ** phy - The type of phy that receives data
851 ** modulation_index - modulation index
852 ** p_cmd_cmpl_cback - Command Complete callback
853 **
854 *******************************************************************************/
BTM_BleEnhancedReceiverTest(UINT8 rx_freq,UINT8 phy,UINT8 modulation_index,tBTM_CMPL_CB * p_cmd_cmpl_cback)855 void BTM_BleEnhancedReceiverTest(UINT8 rx_freq, UINT8 phy, UINT8 modulation_index, tBTM_CMPL_CB *p_cmd_cmpl_cback)
856 {
857 btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback;
858
859 if (btsnd_hcic_ble_enhand_rx_test(rx_freq, phy, modulation_index) == FALSE) {
860 BTM_TRACE_ERROR("%s: Unable to Trigger LE enhanced receiver test", __FUNCTION__);
861 }
862 }
863
864 /*******************************************************************************
865 **
866 ** Function BTM_BleEnhancedTransmitterTest
867 **
868 ** Description This function is called to start the LE Enhanced Transmitter test
869 **
870 ** Parameter tx_freq - Frequency Range
871 ** test_data_len - Length in bytes of payload data in each packet
872 ** packet_payload - Pattern to use in the payload
873 ** phy - The type of phy that sends data
874 ** p_cmd_cmpl_cback - Command Complete callback
875 **
876 *******************************************************************************/
BTM_BleEnhancedTransmitterTest(UINT8 tx_freq,UINT8 test_data_len,UINT8 packet_payload,UINT8 phy,tBTM_CMPL_CB * p_cmd_cmpl_cback)877 void BTM_BleEnhancedTransmitterTest(UINT8 tx_freq, UINT8 test_data_len,
878 UINT8 packet_payload, UINT8 phy, tBTM_CMPL_CB *p_cmd_cmpl_cback)
879 {
880 btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback;
881 if (btsnd_hcic_ble_enhand_tx_test(tx_freq, test_data_len, packet_payload, phy) == FALSE) {
882 BTM_TRACE_ERROR("%s: Unable to Trigger LE enhanced transmitter test", __FUNCTION__);
883 }
884 }
885 #endif // BLE_50_FEATURE_SUPPORT
886
887 /*******************************************************************************
888 **
889 ** Function BTM_UseLeLink
890 **
891 ** Description This function is to select the underneath physical link to use.
892 **
893 ** Returns TRUE to use LE, FALSE use BR/EDR.
894 **
895 *******************************************************************************/
BTM_UseLeLink(BD_ADDR bd_addr)896 BOOLEAN BTM_UseLeLink (BD_ADDR bd_addr)
897 {
898 tACL_CONN *p;
899 tBT_DEVICE_TYPE dev_type;
900 tBLE_ADDR_TYPE addr_type = 0;
901 BOOLEAN use_le = FALSE;
902
903 if ((p = btm_bda_to_acl(bd_addr, BT_TRANSPORT_BR_EDR)) != NULL) {
904 return use_le;
905 } else if ((p = btm_bda_to_acl(bd_addr, BT_TRANSPORT_LE)) != NULL) {
906 use_le = TRUE;
907 } else {
908 BTM_ReadDevInfo(bd_addr, &dev_type, &addr_type);
909 use_le = (dev_type == BT_DEVICE_TYPE_BLE);
910 }
911 return use_le;
912 }
913
914
915 /*******************************************************************************
916 **
917 ** Function BTM_SetBleDataLength
918 **
919 ** Description This function is to set maximum BLE transmission packet size
920 **
921 ** Returns BTM_SUCCESS if success; otherwise failed.
922 **
923 *******************************************************************************/
BTM_SetBleDataLength(BD_ADDR bd_addr,UINT16 tx_pdu_length)924 tBTM_STATUS BTM_SetBleDataLength(BD_ADDR bd_addr, UINT16 tx_pdu_length)
925 {
926 tACL_CONN *p_acl = btm_bda_to_acl(bd_addr, BT_TRANSPORT_LE);
927
928 BTM_TRACE_DEBUG("%s: tx_pdu_length =%d", __FUNCTION__, tx_pdu_length);
929
930 if (!controller_get_interface()->supports_ble_packet_extension()) {
931 BTM_TRACE_ERROR("%s failed, request not supported", __FUNCTION__);
932 return BTM_CONTROL_LE_DATA_LEN_UNSUPPORTED;
933 }
934
935 if (p_acl != NULL) {
936 if (!HCI_LE_DATA_LEN_EXT_SUPPORTED(p_acl->peer_le_features)) {
937 BTM_TRACE_ERROR("%s failed, peer does not support request", __FUNCTION__);
938 return BTM_PEER_LE_DATA_LEN_UNSUPPORTED;
939 }
940
941 if (tx_pdu_length > BTM_BLE_DATA_SIZE_MAX) {
942 tx_pdu_length = BTM_BLE_DATA_SIZE_MAX;
943 } else if (tx_pdu_length < BTM_BLE_DATA_SIZE_MIN) {
944 tx_pdu_length = BTM_BLE_DATA_SIZE_MIN;
945 }
946
947 /* always set the TxTime to be max, as controller does not care for now */
948 btsnd_hcic_ble_set_data_length(p_acl->hci_handle, tx_pdu_length,
949 BTM_BLE_DATA_TX_TIME_MAX);
950
951 return BTM_SUCCESS;
952 } else {
953 BTM_TRACE_ERROR("%s: Wrong mode: no LE link exist or LE not supported", __FUNCTION__);
954 return BTM_WRONG_MODE;
955 }
956 }
957
958 #if (SMP_INCLUDED == TRUE)
959 /*******************************************************************************
960 **
961 ** Function btm_ble_determine_security_act
962 **
963 ** Description This function checks the security of current LE link
964 ** and returns the appropriate action that needs to be
965 ** taken to achieve the required security.
966 **
967 ** Parameter is_originator - True if outgoing connection
968 ** bdaddr: remote device address
969 ** security_required: Security required for the service.
970 **
971 ** Returns The appropriate security action required.
972 **
973 *******************************************************************************/
btm_ble_determine_security_act(BOOLEAN is_originator,BD_ADDR bdaddr,UINT16 security_required)974 tBTM_SEC_ACTION btm_ble_determine_security_act(BOOLEAN is_originator, BD_ADDR bdaddr, UINT16 security_required)
975 {
976 tBTM_LE_AUTH_REQ auth_req = 0x00;
977
978 if (is_originator)
979 {
980 if ((security_required & BTM_SEC_OUT_FLAGS) == 0 &&
981 (security_required & BTM_SEC_OUT_MITM) == 0)
982 {
983 BTM_TRACE_DEBUG ("%s No security required for outgoing connection", __func__);
984 return BTM_SEC_OK;
985 }
986
987 if (security_required & BTM_SEC_OUT_MITM) {
988 auth_req |= BTM_LE_AUTH_REQ_MITM;
989 }
990 }
991 else
992 {
993 if ((security_required & BTM_SEC_IN_FLAGS) == 0&& (security_required & BTM_SEC_IN_MITM) == 0)
994 {
995 BTM_TRACE_DEBUG ("%s No security required for incoming connection", __func__);
996 return BTM_SEC_OK;
997 }
998
999 if (security_required & BTM_SEC_IN_MITM) {
1000 auth_req |= BTM_LE_AUTH_REQ_MITM;
1001 }
1002 }
1003
1004 tBTM_BLE_SEC_REQ_ACT ble_sec_act = BTM_BLE_SEC_REQ_ACT_NONE;
1005 btm_ble_link_sec_check(bdaddr, auth_req, &ble_sec_act);
1006
1007 BTM_TRACE_DEBUG ("%s ble_sec_act %d", __func__ , ble_sec_act);
1008
1009 if (ble_sec_act == BTM_BLE_SEC_REQ_ACT_DISCARD) {
1010 return BTM_SEC_ENC_PENDING;
1011 }
1012
1013 if (ble_sec_act == BTM_BLE_SEC_REQ_ACT_NONE) {
1014 return BTM_SEC_OK;
1015 }
1016
1017 UINT8 sec_flag = 0;
1018 BTM_GetSecurityFlagsByTransport(bdaddr, &sec_flag, BT_TRANSPORT_LE);
1019
1020 BOOLEAN is_link_encrypted = FALSE;
1021 BOOLEAN is_key_mitm = FALSE;
1022 if (sec_flag & (BTM_SEC_FLAG_ENCRYPTED| BTM_SEC_FLAG_LKEY_KNOWN))
1023 {
1024 if (sec_flag & BTM_SEC_FLAG_ENCRYPTED) {
1025 is_link_encrypted = TRUE;
1026 }
1027
1028 if (sec_flag & BTM_SEC_FLAG_LKEY_AUTHED) {
1029 is_key_mitm = TRUE;
1030 }
1031 }
1032
1033 if (auth_req & BTM_LE_AUTH_REQ_MITM)
1034 {
1035 if (!is_key_mitm)
1036 {
1037 return BTM_SEC_ENCRYPT_MITM;
1038 } else {
1039 if (is_link_encrypted) {
1040 return BTM_SEC_OK;
1041 } else {
1042 return BTM_SEC_ENCRYPT;
1043 }
1044 }
1045 } else {
1046 if (is_link_encrypted) {
1047 return BTM_SEC_OK;
1048 } else {
1049 return BTM_SEC_ENCRYPT_NO_MITM;
1050 }
1051 }
1052
1053 return BTM_SEC_OK;
1054 }
1055
1056 /*******************************************************************************
1057 **
1058 ** Function btm_ble_start_sec_check
1059 **
1060 ** Description This function is to check and set the security required for
1061 ** LE link for LE COC.
1062 **
1063 ** Parameter bdaddr: remote device address.
1064 ** psm : PSM of the LE COC sevice.
1065 ** is_originator: TRUE if outgoing connection.
1066 ** p_callback : Pointer to the callback function.
1067 ** p_ref_data : Pointer to be returned along with the callback.
1068 **
1069 ** Returns TRUE if link already meets the required security; otherwise FALSE.
1070 **
1071 *******************************************************************************/
btm_ble_start_sec_check(BD_ADDR bd_addr,UINT16 psm,BOOLEAN is_originator,tBTM_SEC_CALLBACK * p_callback,void * p_ref_data)1072 BOOLEAN btm_ble_start_sec_check(BD_ADDR bd_addr, UINT16 psm, BOOLEAN is_originator,
1073 tBTM_SEC_CALLBACK *p_callback, void *p_ref_data)
1074 {
1075 /* Find the service record for the PSM */
1076 tBTM_SEC_SERV_REC *p_serv_rec = btm_sec_find_first_serv (is_originator, psm);
1077
1078 /* If there is no application registered with this PSM do not allow connection */
1079 if (!p_serv_rec)
1080 {
1081 BTM_TRACE_WARNING ("%s PSM: %d no application registerd", __func__, psm);
1082 (*p_callback) (bd_addr, BT_TRANSPORT_LE, p_ref_data, BTM_MODE_UNSUPPORTED);
1083 return FALSE;
1084 }
1085
1086 tBTM_SEC_ACTION sec_act = btm_ble_determine_security_act(is_originator,
1087 bd_addr, p_serv_rec->security_flags);
1088
1089 tBTM_BLE_SEC_ACT ble_sec_act = BTM_BLE_SEC_NONE;
1090 BOOLEAN status = FALSE;
1091
1092 switch (sec_act)
1093 {
1094 case BTM_SEC_OK:
1095 BTM_TRACE_DEBUG ("%s Security met", __func__);
1096 p_callback(bd_addr, BT_TRANSPORT_LE, p_ref_data, BTM_SUCCESS);
1097 status = TRUE;
1098 break;
1099
1100 case BTM_SEC_ENCRYPT:
1101 BTM_TRACE_DEBUG ("%s Encryption needs to be done", __func__);
1102 ble_sec_act = BTM_BLE_SEC_ENCRYPT;
1103 break;
1104
1105 case BTM_SEC_ENCRYPT_MITM:
1106 BTM_TRACE_DEBUG ("%s Pairing with MITM needs to be done", __func__);
1107 ble_sec_act = BTM_BLE_SEC_ENCRYPT_MITM;
1108 break;
1109
1110 case BTM_SEC_ENCRYPT_NO_MITM:
1111 BTM_TRACE_DEBUG ("%s Pairing with No MITM needs to be done", __func__);
1112 ble_sec_act = BTM_BLE_SEC_ENCRYPT_NO_MITM;
1113 break;
1114
1115 case BTM_SEC_ENC_PENDING:
1116 BTM_TRACE_DEBUG ("%s Ecryption pending", __func__);
1117 break;
1118 }
1119
1120 if (ble_sec_act == BTM_BLE_SEC_NONE) {
1121 return status;
1122 }
1123
1124 tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr(bd_addr, BT_TRANSPORT_LE);
1125 p_lcb->sec_act = sec_act;
1126 BTM_SetEncryption(bd_addr, BT_TRANSPORT_LE, p_callback, p_ref_data);
1127
1128 return FALSE;
1129 }
1130
1131
1132 /*******************************************************************************
1133 **
1134 ** Function btm_ble_rand_enc_complete
1135 **
1136 ** Description This function is the callback functions for HCI_Rand command
1137 ** and HCI_Encrypt command is completed.
1138 ** This message is received from the HCI.
1139 **
1140 ** Returns void
1141 **
1142 *******************************************************************************/
btm_ble_rand_enc_complete(UINT8 * p,UINT16 op_code,tBTM_RAND_ENC_CB * p_enc_cplt_cback)1143 void btm_ble_rand_enc_complete (UINT8 *p, UINT16 op_code, tBTM_RAND_ENC_CB *p_enc_cplt_cback)
1144 {
1145 tBTM_RAND_ENC params;
1146 UINT8 *p_dest = params.param_buf;
1147
1148 BTM_TRACE_DEBUG ("btm_ble_rand_enc_complete");
1149
1150 memset(¶ms, 0, sizeof(tBTM_RAND_ENC));
1151
1152 /* If there was a callback address for vcs complete, call it */
1153 if (p_enc_cplt_cback && p) {
1154 /* Pass paramters to the callback function */
1155 STREAM_TO_UINT8(params.status, p); /* command status */
1156
1157 if (params.status == HCI_SUCCESS) {
1158 params.opcode = op_code;
1159
1160 if (op_code == HCI_BLE_RAND) {
1161 params.param_len = BT_OCTET8_LEN;
1162 } else {
1163 params.param_len = BT_OCTET16_LEN;
1164 }
1165
1166 memcpy(p_dest, p, params.param_len); /* Fetch return info from HCI event message */
1167 }
1168 if (p_enc_cplt_cback) {
1169 (*p_enc_cplt_cback)(¶ms); /* Call the Encryption complete callback function */
1170 }
1171 }
1172 }
1173 #endif ///SMP_INCLUDED == TRUE
1174
1175
1176 /*******************************************************************************
1177 **
1178 ** Function btm_ble_get_enc_key_type
1179 **
1180 ** Description This function is to increment local sign counter
1181 ** Returns None
1182 **
1183 *******************************************************************************/
1184 #if (SMP_INCLUDED == TRUE)
btm_ble_increment_sign_ctr(BD_ADDR bd_addr,BOOLEAN is_local)1185 void btm_ble_increment_sign_ctr(BD_ADDR bd_addr, BOOLEAN is_local )
1186 {
1187 tBTM_SEC_DEV_REC *p_dev_rec;
1188
1189 BTM_TRACE_DEBUG ("btm_ble_increment_sign_ctr is_local=%d", is_local);
1190
1191 if ((p_dev_rec = btm_find_dev (bd_addr)) != NULL) {
1192 if (is_local) {
1193 p_dev_rec->ble.keys.local_counter++;
1194 } else {
1195 p_dev_rec->ble.keys.counter++;
1196 }
1197 BTM_TRACE_DEBUG ("is_local=%d local sign counter=%d peer sign counter=%d",
1198 is_local,
1199 p_dev_rec->ble.keys.local_counter,
1200 p_dev_rec->ble.keys.counter);
1201 }
1202 }
1203 #endif ///SMP_INCLUDED == TRUE
1204 #endif ///BLE_INCLUDED == TRUE
1205
1206 /*******************************************************************************
1207 **
1208 ** Function btm_ble_get_enc_key_type
1209 **
1210 ** Description This function is to get the BLE key type that has been exchanged
1211 ** in betweem local device and peer device.
1212 **
1213 ** Returns p_key_type: output parameter to carry the key type value.
1214 **
1215 *******************************************************************************/
1216 #if (SMP_INCLUDED == TRUE)
1217 #if (BLE_INCLUDED == TRUE)
btm_ble_get_enc_key_type(BD_ADDR bd_addr,UINT8 * p_key_types)1218 BOOLEAN btm_ble_get_enc_key_type(BD_ADDR bd_addr, UINT8 *p_key_types)
1219 {
1220 tBTM_SEC_DEV_REC *p_dev_rec;
1221
1222 BTM_TRACE_DEBUG ("btm_ble_get_enc_key_type");
1223
1224 if ((p_dev_rec = btm_find_dev (bd_addr)) != NULL) {
1225 *p_key_types = p_dev_rec->ble.key_type;
1226 return TRUE;
1227 }
1228
1229 return FALSE;
1230 }
1231
1232 /*******************************************************************************
1233 **
1234 ** Function btm_get_local_div
1235 **
1236 ** Description This function is called to read the local DIV
1237 **
1238 ** Returns TRUE - if a valid DIV is availavle
1239 *******************************************************************************/
btm_get_local_div(BD_ADDR bd_addr,UINT16 * p_div)1240 BOOLEAN btm_get_local_div (BD_ADDR bd_addr, UINT16 *p_div)
1241 {
1242 tBTM_SEC_DEV_REC *p_dev_rec;
1243 BOOLEAN status = FALSE;
1244 BTM_TRACE_DEBUG ("btm_get_local_div");
1245
1246 BTM_TRACE_DEBUG("bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
1247 bd_addr[0], bd_addr[1],
1248 bd_addr[2], bd_addr[3],
1249 bd_addr[4], bd_addr[5]);
1250
1251 *p_div = 0;
1252 p_dev_rec = btm_find_dev (bd_addr);
1253
1254 if (p_dev_rec && p_dev_rec->ble.keys.div) {
1255 status = TRUE;
1256 *p_div = p_dev_rec->ble.keys.div;
1257 }
1258 BTM_TRACE_DEBUG ("btm_get_local_div status=%d (1-OK) DIV=0x%x", status, *p_div);
1259 return status;
1260 }
1261
1262 /*******************************************************************************
1263 **
1264 ** Function btm_sec_save_le_key
1265 **
1266 ** Description This function is called by the SMP to update
1267 ** an BLE key. SMP is internal, whereas all the keys shall
1268 ** be sent to the application. The function is also called
1269 ** when application passes ble key stored in NVRAM to the btm_sec.
1270 ** pass_to_application parameter is false in this case.
1271 **
1272 ** Returns void
1273 **
1274 *******************************************************************************/
btm_sec_save_le_key(BD_ADDR bd_addr,tBTM_LE_KEY_TYPE key_type,tBTM_LE_KEY_VALUE * p_keys,BOOLEAN pass_to_application)1275 void btm_sec_save_le_key(BD_ADDR bd_addr, tBTM_LE_KEY_TYPE key_type, tBTM_LE_KEY_VALUE *p_keys,
1276 BOOLEAN pass_to_application)
1277 {
1278 tBTM_SEC_DEV_REC *p_rec;
1279 tBTM_LE_EVT_DATA cb_data;
1280 UINT8 i;
1281
1282 BTM_TRACE_DEBUG ("btm_sec_save_le_key key_type=0x%x pass_to_application=%d", key_type, pass_to_application);
1283 /* Store the updated key in the device database */
1284
1285 BTM_TRACE_DEBUG("bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
1286 bd_addr[0], bd_addr[1],
1287 bd_addr[2], bd_addr[3],
1288 bd_addr[4], bd_addr[5]);
1289
1290 if ((p_rec = btm_find_dev (bd_addr)) != NULL && (p_keys || key_type == BTM_LE_KEY_LID)) {
1291 btm_ble_init_pseudo_addr (p_rec, bd_addr);
1292
1293 switch (key_type) {
1294 case BTM_LE_KEY_PENC:
1295 memcpy(p_rec->ble.keys.pltk, p_keys->penc_key.ltk, BT_OCTET16_LEN);
1296 memcpy(p_rec->ble.keys.rand, p_keys->penc_key.rand, BT_OCTET8_LEN);
1297 p_rec->ble.keys.sec_level = p_keys->penc_key.sec_level;
1298 p_rec->ble.keys.ediv = p_keys->penc_key.ediv;
1299 p_rec->ble.keys.key_size = p_keys->penc_key.key_size;
1300 p_rec->ble.key_type |= BTM_LE_KEY_PENC;
1301 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_KNOWN;
1302 if (p_keys->penc_key.sec_level == SMP_SEC_AUTHENTICATED) {
1303 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED;
1304 } else {
1305 p_rec->sec_flags &= ~BTM_SEC_LE_LINK_KEY_AUTHED;
1306 }
1307 BTM_TRACE_DEBUG("BTM_LE_KEY_PENC key_type=0x%x sec_flags=0x%x sec_leve=0x%x",
1308 p_rec->ble.key_type,
1309 p_rec->sec_flags,
1310 p_rec->ble.keys.sec_level);
1311 break;
1312
1313 case BTM_LE_KEY_PID:
1314 for (i = 0; i < BT_OCTET16_LEN; i++) {
1315 p_rec->ble.keys.irk[i] = p_keys->pid_key.irk[i];
1316 }
1317
1318 //memcpy( p_rec->ble.keys.irk, p_keys->pid_key, BT_OCTET16_LEN); todo will crash the system
1319 memcpy(p_rec->ble.static_addr, p_keys->pid_key.static_addr, BD_ADDR_LEN);
1320 p_rec->ble.static_addr_type = p_keys->pid_key.addr_type;
1321 p_rec->ble.key_type |= BTM_LE_KEY_PID;
1322 BTM_TRACE_DEBUG("BTM_LE_KEY_PID key_type=0x%x save peer IRK", p_rec->ble.key_type);
1323 /* update device record address as static address */
1324 memcpy(p_rec->bd_addr, p_keys->pid_key.static_addr, BD_ADDR_LEN);
1325 /* combine DUMO device security record if needed */
1326 btm_consolidate_dev(p_rec);
1327 break;
1328
1329 case BTM_LE_KEY_PCSRK:
1330 memcpy(p_rec->ble.keys.pcsrk, p_keys->pcsrk_key.csrk, BT_OCTET16_LEN);
1331 p_rec->ble.keys.srk_sec_level = p_keys->pcsrk_key.sec_level;
1332 p_rec->ble.keys.counter = p_keys->pcsrk_key.counter;
1333 p_rec->ble.key_type |= BTM_LE_KEY_PCSRK;
1334 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_KNOWN;
1335 if ( p_keys->pcsrk_key.sec_level == SMP_SEC_AUTHENTICATED) {
1336 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED;
1337 } else {
1338 p_rec->sec_flags &= ~BTM_SEC_LE_LINK_KEY_AUTHED;
1339 }
1340
1341 BTM_TRACE_DEBUG("BTM_LE_KEY_PCSRK key_type=0x%x sec_flags=0x%x sec_level=0x%x peer_counter=%d",
1342 p_rec->ble.key_type,
1343 p_rec->sec_flags,
1344 p_rec->ble.keys.srk_sec_level,
1345 p_rec->ble.keys.counter );
1346 break;
1347
1348 case BTM_LE_KEY_LENC:
1349 memcpy(p_rec->ble.keys.lltk, p_keys->lenc_key.ltk, BT_OCTET16_LEN);
1350 p_rec->ble.keys.div = p_keys->lenc_key.div; /* update DIV */
1351 p_rec->ble.keys.sec_level = p_keys->lenc_key.sec_level;
1352 p_rec->ble.keys.key_size = p_keys->lenc_key.key_size;
1353 p_rec->ble.key_type |= BTM_LE_KEY_LENC;
1354
1355 /* Set that link key is known since this shares field with BTM_SEC_FLAG_LKEY_KNOWN flag in stack/btm_api.h*/
1356 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_KNOWN;
1357 if ( p_keys->lenc_key.sec_level == SMP_SEC_AUTHENTICATED) {
1358 p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED;
1359 } else {
1360 p_rec->sec_flags &= ~BTM_SEC_LE_LINK_KEY_AUTHED;
1361 }
1362
1363 BTM_TRACE_DEBUG("BTM_LE_KEY_LENC key_type=0x%x DIV=0x%x key_size=0x%x sec_level=0x%x",
1364 p_rec->ble.key_type,
1365 p_rec->ble.keys.div,
1366 p_rec->ble.keys.key_size,
1367 p_rec->ble.keys.sec_level );
1368 break;
1369
1370 case BTM_LE_KEY_LCSRK:/* local CSRK has been delivered */
1371 memcpy (p_rec->ble.keys.lcsrk, p_keys->lcsrk_key.csrk, BT_OCTET16_LEN);
1372 p_rec->ble.keys.div = p_keys->lcsrk_key.div; /* update DIV */
1373 p_rec->ble.keys.local_csrk_sec_level = p_keys->lcsrk_key.sec_level;
1374 p_rec->ble.keys.local_counter = p_keys->lcsrk_key.counter;
1375 p_rec->ble.key_type |= BTM_LE_KEY_LCSRK;
1376 BTM_TRACE_DEBUG("BTM_LE_KEY_LCSRK key_type=0x%x DIV=0x%x scrk_sec_level=0x%x local_counter=%d",
1377 p_rec->ble.key_type,
1378 p_rec->ble.keys.div,
1379 p_rec->ble.keys.local_csrk_sec_level,
1380 p_rec->ble.keys.local_counter );
1381 break;
1382
1383 case BTM_LE_KEY_LID:
1384 p_rec->ble.key_type |= BTM_LE_KEY_LID;
1385 break;
1386 default:
1387 BTM_TRACE_WARNING("btm_sec_save_le_key (Bad key_type 0x%02x)", key_type);
1388 return;
1389 }
1390
1391 BTM_TRACE_DEBUG ("BLE key type 0x%02x updated for BDA: %08x%04x (btm_sec_save_le_key)", key_type,
1392 (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
1393 (bd_addr[4] << 8) + bd_addr[5]);
1394
1395 /* Notify the application that one of the BLE keys has been updated
1396 If link key is in progress, it will get sent later.*/
1397 if (pass_to_application && btm_cb.api.p_le_callback) {
1398 cb_data.key.p_key_value = p_keys;
1399 cb_data.key.key_type = key_type;
1400
1401 (*btm_cb.api.p_le_callback) (BTM_LE_KEY_EVT, bd_addr, &cb_data);
1402 }
1403 return;
1404 }
1405
1406 BTM_TRACE_WARNING ("BLE key type 0x%02x called for Unknown BDA or type: %08x%04x !! (btm_sec_save_le_key)", key_type,
1407 (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
1408 (bd_addr[4] << 8) + bd_addr[5]);
1409
1410 if (p_rec) {
1411 BTM_TRACE_DEBUG ("sec_flags=0x%x", p_rec->sec_flags);
1412 }
1413 }
1414
1415 /*******************************************************************************
1416 **
1417 ** Function btm_ble_update_sec_key_size
1418 **
1419 ** Description update the current lin kencryption key size
1420 **
1421 ** Returns void
1422 **
1423 *******************************************************************************/
btm_ble_update_sec_key_size(BD_ADDR bd_addr,UINT8 enc_key_size)1424 void btm_ble_update_sec_key_size(BD_ADDR bd_addr, UINT8 enc_key_size)
1425 {
1426 tBTM_SEC_DEV_REC *p_rec;
1427
1428 BTM_TRACE_DEBUG("btm_ble_update_sec_key_size enc_key_size = %d", enc_key_size);
1429
1430 if ((p_rec = btm_find_dev (bd_addr)) != NULL ) {
1431 p_rec->enc_key_size = enc_key_size;
1432 }
1433 }
1434
1435
1436 /*******************************************************************************
1437 **
1438 ** Function btm_ble_read_sec_key_size
1439 **
1440 ** Description update the current lin kencryption key size
1441 **
1442 ** Returns void
1443 **
1444 *******************************************************************************/
btm_ble_read_sec_key_size(BD_ADDR bd_addr)1445 UINT8 btm_ble_read_sec_key_size(BD_ADDR bd_addr)
1446 {
1447 tBTM_SEC_DEV_REC *p_rec;
1448
1449 if ((p_rec = btm_find_dev (bd_addr)) != NULL ) {
1450 return p_rec->enc_key_size;
1451 } else {
1452 return 0;
1453 }
1454 return 0;
1455 }
1456
1457 /*******************************************************************************
1458 **
1459 ** Function btm_ble_link_sec_check
1460 **
1461 ** Description Check BLE link security level match.
1462 **
1463 ** Returns TRUE: check is OK and the *p_sec_req_act contain the action
1464 **
1465 *******************************************************************************/
btm_ble_link_sec_check(BD_ADDR bd_addr,tBTM_LE_AUTH_REQ auth_req,tBTM_BLE_SEC_REQ_ACT * p_sec_req_act)1466 void btm_ble_link_sec_check(BD_ADDR bd_addr, tBTM_LE_AUTH_REQ auth_req, tBTM_BLE_SEC_REQ_ACT *p_sec_req_act)
1467 {
1468 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
1469 UINT8 req_sec_level = BTM_LE_SEC_NONE, cur_sec_level = BTM_LE_SEC_NONE;
1470
1471 BTM_TRACE_DEBUG ("btm_ble_link_sec_check auth_req =0x%x", auth_req);
1472
1473 if (p_dev_rec == NULL) {
1474 BTM_TRACE_ERROR ("btm_ble_link_sec_check received for unknown device");
1475 return;
1476 }
1477
1478 if (p_dev_rec->sec_state == BTM_SEC_STATE_ENCRYPTING ||
1479 p_dev_rec->sec_state == BTM_SEC_STATE_AUTHENTICATING) {
1480 /* race condition: discard the security request while master is encrypting the link */
1481 *p_sec_req_act = BTM_BLE_SEC_REQ_ACT_DISCARD;
1482 } else {
1483 req_sec_level = BTM_LE_SEC_UNAUTHENTICATE;
1484 if (auth_req & BTM_LE_AUTH_REQ_MITM) {
1485 req_sec_level = BTM_LE_SEC_AUTHENTICATED;
1486 }
1487
1488 BTM_TRACE_DEBUG ("dev_rec sec_flags=0x%x", p_dev_rec->sec_flags);
1489
1490 /* currently encrpted */
1491 if (p_dev_rec->sec_flags & BTM_SEC_LE_ENCRYPTED) {
1492 if (p_dev_rec->sec_flags & BTM_SEC_LE_AUTHENTICATED) {
1493 cur_sec_level = BTM_LE_SEC_AUTHENTICATED;
1494 } else {
1495 cur_sec_level = BTM_LE_SEC_UNAUTHENTICATE;
1496 }
1497 } else { /* unencrypted link */
1498 /* if bonded, get the key security level */
1499 if (p_dev_rec->ble.key_type & BTM_LE_KEY_PENC) {
1500 cur_sec_level = p_dev_rec->ble.keys.sec_level;
1501 } else {
1502 cur_sec_level = BTM_LE_SEC_NONE;
1503 }
1504 }
1505
1506 if (cur_sec_level >= req_sec_level) {
1507 /* To avoid re-encryption on an encrypted link for an equal condition encryption */
1508 *p_sec_req_act = BTM_BLE_SEC_REQ_ACT_ENCRYPT;
1509 } else {
1510 *p_sec_req_act = BTM_BLE_SEC_REQ_ACT_PAIR; /* start the pariring process to upgrade the keys*/
1511 }
1512 }
1513
1514 BTM_TRACE_DEBUG("cur_sec_level=%d req_sec_level=%d sec_req_act=%d",
1515 cur_sec_level,
1516 req_sec_level,
1517 *p_sec_req_act);
1518
1519
1520 }
1521 #endif ///BLE_INCLUDED == TRUE
1522 #endif ///SMP_INCLUDED == TRUE
1523
1524 #if (BLE_INCLUDED == TRUE)
1525 /*******************************************************************************
1526 **
1527 ** Function btm_ble_set_encryption
1528 **
1529 ** Description This function is called to ensure that LE connection is
1530 ** encrypted. Should be called only on an open connection.
1531 ** Typically only needed for connections that first want to
1532 ** bring up unencrypted links, then later encrypt them.
1533 **
1534 ** Returns void
1535 ** the local device ER is copied into er
1536 **
1537 *******************************************************************************/
btm_ble_set_encryption(BD_ADDR bd_addr,void * p_ref_data,UINT8 link_role)1538 tBTM_STATUS btm_ble_set_encryption (BD_ADDR bd_addr, void *p_ref_data, UINT8 link_role)
1539 {
1540 tBTM_STATUS cmd = BTM_NO_RESOURCES;
1541 #if (SMP_INCLUDED == TRUE)
1542 tBTM_BLE_SEC_ACT sec_act = *(tBTM_BLE_SEC_ACT *)p_ref_data ;
1543 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr);
1544 tBTM_BLE_SEC_REQ_ACT sec_req_act;
1545 tBTM_LE_AUTH_REQ auth_req;
1546
1547 if (p_rec == NULL) {
1548 BTM_TRACE_WARNING ("btm_ble_set_encryption (NULL device record!! sec_act=0x%x", sec_act);
1549 return (BTM_WRONG_MODE);
1550 }
1551
1552 BTM_TRACE_DEBUG ("btm_ble_set_encryption sec_act=0x%x role_master=%d", sec_act, p_rec->role_master);
1553
1554 if (sec_act == BTM_BLE_SEC_ENCRYPT_MITM) {
1555 p_rec->security_required |= BTM_SEC_IN_MITM;
1556 }
1557
1558 switch (sec_act) {
1559 case BTM_BLE_SEC_ENCRYPT:
1560 if (link_role == BTM_ROLE_MASTER && (p_rec->ble.key_type & BTM_LE_KEY_PENC)) {
1561 /* start link layer encryption using the security info stored */
1562 cmd = btm_ble_start_encrypt(bd_addr, FALSE, NULL);
1563 break;
1564 }
1565 /* if salve role then fall through to call SMP_Pair below which will send a
1566 sec_request to request the master to encrypt the link */
1567 case BTM_BLE_SEC_ENCRYPT_NO_MITM:
1568 case BTM_BLE_SEC_ENCRYPT_MITM:
1569 if ((link_role == BTM_ROLE_MASTER) && (sec_act != BTM_BLE_SEC_ENCRYPT)) {
1570 auth_req = (sec_act == BTM_BLE_SEC_ENCRYPT_NO_MITM)
1571 ? SMP_AUTH_GEN_BOND : (SMP_AUTH_GEN_BOND | SMP_AUTH_YN_BIT);
1572 btm_ble_link_sec_check (bd_addr, auth_req, &sec_req_act);
1573
1574 if (sec_req_act == BTM_BLE_SEC_REQ_ACT_ENCRYPT) {
1575 cmd = btm_ble_start_encrypt(bd_addr, FALSE, NULL);
1576 break;
1577 }
1578 }
1579 #if (SMP_SLAVE_CON_PARAMS_UPD_ENABLE == TRUE)
1580 // already have encrypted information, do not need to update connection parameters
1581 if(link_role == BTM_ROLE_SLAVE && (p_rec->ble.key_type & BTM_LE_KEY_PENC)) {
1582 p_rec->ble.skip_update_conn_param = true;
1583 } else {
1584 p_rec->ble.skip_update_conn_param = false;
1585 }
1586 #endif
1587 if (SMP_Pair(bd_addr) == SMP_STARTED) {
1588 cmd = BTM_CMD_STARTED;
1589 p_rec->sec_state = BTM_SEC_STATE_AUTHENTICATING;
1590 }
1591 break;
1592
1593 default:
1594 cmd = BTM_WRONG_MODE;
1595 break;
1596 }
1597 #endif ///SMP_INCLUDED == TRUE
1598 return cmd;
1599 }
1600
1601 /*******************************************************************************
1602 **
1603 ** Function btm_ble_ltk_request
1604 **
1605 ** Description This function is called when encryption request is received
1606 ** on a slave device.
1607 **
1608 **
1609 ** Returns void
1610 **
1611 *******************************************************************************/
1612 #if (SMP_INCLUDED == TRUE)
btm_ble_ltk_request(UINT16 handle,UINT8 rand[8],UINT16 ediv)1613 void btm_ble_ltk_request(UINT16 handle, UINT8 rand[8], UINT16 ediv)
1614 {
1615 tBTM_CB *p_cb = &btm_cb;
1616 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev_by_handle (handle);
1617 BT_OCTET16 dummy_stk = {0};
1618
1619 BTM_TRACE_DEBUG ("btm_ble_ltk_request");
1620
1621 p_cb->ediv = ediv;
1622
1623 memcpy(p_cb->enc_rand, rand, BT_OCTET8_LEN);
1624
1625 if (p_dev_rec != NULL) {
1626 if (!smp_proc_ltk_request(p_dev_rec->bd_addr)) {
1627 btm_ble_ltk_request_reply(p_dev_rec->bd_addr, FALSE, dummy_stk);
1628 }
1629 }
1630
1631 }
1632 #endif ///SMP_INCLUDED == TRUE
1633
1634
1635 /*******************************************************************************
1636 **
1637 ** Function btm_ble_start_encrypt
1638 **
1639 ** Description This function is called to start LE encryption.
1640 **
1641 **
1642 ** Returns BTM_SUCCESS if encryption was started successfully
1643 **
1644 *******************************************************************************/
btm_ble_start_encrypt(BD_ADDR bda,BOOLEAN use_stk,BT_OCTET16 stk)1645 tBTM_STATUS btm_ble_start_encrypt(BD_ADDR bda, BOOLEAN use_stk, BT_OCTET16 stk)
1646 {
1647 #if (SMP_INCLUDED == TRUE)
1648 tBTM_CB *p_cb = &btm_cb;
1649 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bda);
1650 BT_OCTET8 dummy_rand = {0};
1651 #endif ///SMP_INCLUDED == TRUE
1652
1653 tBTM_STATUS rt = BTM_NO_RESOURCES;
1654 #if (SMP_INCLUDED == TRUE)
1655 BTM_TRACE_DEBUG ("btm_ble_start_encrypt");
1656
1657 if (!p_rec ) {
1658 BTM_TRACE_ERROR("Link is not active, can not encrypt!");
1659 return BTM_WRONG_MODE;
1660 }
1661
1662 if (p_rec->sec_state == BTM_SEC_STATE_ENCRYPTING) {
1663 BTM_TRACE_WARNING("Link Encryption is active, Busy!");
1664 return BTM_BUSY;
1665 }
1666
1667 p_cb->enc_handle = p_rec->ble_hci_handle;
1668
1669 if (use_stk) {
1670 if (btsnd_hcic_ble_start_enc(p_rec->ble_hci_handle, dummy_rand, 0, stk)) {
1671 rt = BTM_CMD_STARTED;
1672 }
1673 } else if (p_rec->ble.key_type & BTM_LE_KEY_PENC) {
1674 if (btsnd_hcic_ble_start_enc(p_rec->ble_hci_handle, p_rec->ble.keys.rand,
1675 p_rec->ble.keys.ediv, p_rec->ble.keys.pltk)) {
1676 rt = BTM_CMD_STARTED;
1677 }
1678 } else {
1679 BTM_TRACE_ERROR("No key available to encrypt the link");
1680 }
1681 if (rt == BTM_CMD_STARTED) {
1682 if (p_rec->sec_state == BTM_SEC_STATE_IDLE) {
1683 p_rec->sec_state = BTM_SEC_STATE_ENCRYPTING;
1684 }
1685 }
1686 #endif ///SMP_INCLUDED == TRUE
1687 return rt;
1688 }
1689
1690 /*******************************************************************************
1691 **
1692 ** Function btm_ble_link_encrypted
1693 **
1694 ** Description This function is called when LE link encrption status is changed.
1695 **
1696 ** Returns void
1697 **
1698 *******************************************************************************/
1699 #if (SMP_INCLUDED == TRUE)
btm_ble_link_encrypted(BD_ADDR bd_addr,UINT8 encr_enable)1700 void btm_ble_link_encrypted(BD_ADDR bd_addr, UINT8 encr_enable)
1701 {
1702 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
1703 BOOLEAN enc_cback;
1704
1705 if (!p_dev_rec) {
1706 BTM_TRACE_WARNING ("btm_ble_link_encrypted (No Device Found!) encr_enable=%d", encr_enable);
1707 return;
1708 }
1709
1710 BTM_TRACE_DEBUG ("btm_ble_link_encrypted encr_enable=%d", encr_enable);
1711
1712 enc_cback = (p_dev_rec->sec_state == BTM_SEC_STATE_ENCRYPTING);
1713
1714 smp_link_encrypted(bd_addr, encr_enable);
1715
1716 BTM_TRACE_DEBUG(" p_dev_rec->sec_flags=0x%x", p_dev_rec->sec_flags);
1717
1718 if (encr_enable && p_dev_rec->enc_key_size == 0) {
1719 p_dev_rec->enc_key_size = p_dev_rec->ble.keys.key_size;
1720 }
1721
1722 p_dev_rec->sec_state = BTM_SEC_STATE_IDLE;
1723 if (p_dev_rec->p_callback && enc_cback) {
1724 if (encr_enable) {
1725 btm_sec_dev_rec_cback_event(p_dev_rec, BTM_SUCCESS, TRUE);
1726 } else if (p_dev_rec->role_master) {
1727 btm_sec_dev_rec_cback_event(p_dev_rec, BTM_ERR_PROCESSING, TRUE);
1728 }
1729
1730 }
1731 /* to notify GATT to send data if any request is pending */
1732 gatt_notify_enc_cmpl(p_dev_rec->ble.pseudo_addr);
1733 }
1734 #endif ///SMP_INCLUDED == TRUE
1735
1736
1737 /*******************************************************************************
1738 **
1739 ** Function btm_ble_ltk_request_reply
1740 **
1741 ** Description This function is called to send a LTK request reply on a slave
1742 ** device.
1743 **
1744 ** Returns void
1745 **
1746 *******************************************************************************/
1747 #if (SMP_INCLUDED == TRUE)
btm_ble_ltk_request_reply(BD_ADDR bda,BOOLEAN use_stk,BT_OCTET16 stk)1748 void btm_ble_ltk_request_reply(BD_ADDR bda, BOOLEAN use_stk, BT_OCTET16 stk)
1749 {
1750 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bda);
1751 tBTM_CB *p_cb = &btm_cb;
1752
1753 if (p_rec == NULL) {
1754 BTM_TRACE_ERROR("btm_ble_ltk_request_reply received for unknown device");
1755 return;
1756 }
1757
1758 BTM_TRACE_DEBUG ("btm_ble_ltk_request_reply");
1759 p_cb->enc_handle = p_rec->ble_hci_handle;
1760 p_cb->key_size = p_rec->ble.keys.key_size;
1761
1762 BTM_TRACE_DEBUG("key size = %d", p_rec->ble.keys.key_size);
1763 if (use_stk) {
1764 btsnd_hcic_ble_ltk_req_reply(btm_cb.enc_handle, stk);
1765 } else { /* calculate LTK using peer device */
1766 if (p_rec->ble.key_type & BTM_LE_KEY_LENC) {
1767 btsnd_hcic_ble_ltk_req_reply(btm_cb.enc_handle, p_rec->ble.keys.lltk);
1768 } else {
1769 btsnd_hcic_ble_ltk_req_neg_reply(btm_cb.enc_handle);
1770 }
1771 }
1772 }
1773
1774 /*******************************************************************************
1775 **
1776 ** Function btm_ble_io_capabilities_req
1777 **
1778 ** Description This function is called to handle SMP get IO capability request.
1779 **
1780 ** Returns void
1781 **
1782 *******************************************************************************/
btm_ble_io_capabilities_req(tBTM_SEC_DEV_REC * p_dev_rec,tBTM_LE_IO_REQ * p_data)1783 UINT8 btm_ble_io_capabilities_req(tBTM_SEC_DEV_REC *p_dev_rec, tBTM_LE_IO_REQ *p_data)
1784 {
1785 UINT8 callback_rc = BTM_SUCCESS;
1786 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req");
1787 if (btm_cb.api.p_le_callback) {
1788 /* the callback function implementation may change the IO capability... */
1789 callback_rc = (*btm_cb.api.p_le_callback) (BTM_LE_IO_REQ_EVT, p_dev_rec->bd_addr, (tBTM_LE_EVT_DATA *)p_data);
1790 }
1791 #if BTM_OOB_INCLUDED == TRUE
1792 if ((callback_rc == BTM_SUCCESS) || (BTM_OOB_UNKNOWN != p_data->oob_data))
1793 #else
1794 if (callback_rc == BTM_SUCCESS)
1795 #endif
1796 {
1797 #if BTM_BLE_CONFORMANCE_TESTING == TRUE
1798 if (btm_cb.devcb.keep_rfu_in_auth_req) {
1799 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req keep_rfu_in_auth_req = %u",
1800 btm_cb.devcb.keep_rfu_in_auth_req);
1801 p_data->auth_req &= BTM_LE_AUTH_REQ_MASK_KEEP_RFU;
1802 btm_cb.devcb.keep_rfu_in_auth_req = FALSE;
1803 } else {
1804 /* default */
1805 p_data->auth_req &= BTM_LE_AUTH_REQ_MASK;
1806 }
1807 #else
1808 p_data->auth_req &= BTM_LE_AUTH_REQ_MASK;
1809 #endif
1810
1811 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 1: p_dev_rec->security_required = %d auth_req:%d",
1812 p_dev_rec->security_required, p_data->auth_req);
1813 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 2: i_keys=0x%x r_keys=0x%x (bit 0-LTK 1-IRK 2-CSRK)",
1814 p_data->init_keys,
1815 p_data->resp_keys);
1816
1817 /* if authentication requires MITM protection, put on the mask */
1818 if (p_dev_rec->security_required & BTM_SEC_IN_MITM) {
1819 p_data->auth_req |= BTM_LE_AUTH_REQ_MITM;
1820 }
1821
1822 if (!(p_data->auth_req & SMP_AUTH_BOND)) {
1823 BTM_TRACE_DEBUG("Non bonding: No keys should be exchanged");
1824 p_data->init_keys = 0;
1825 p_data->resp_keys = 0;
1826 }
1827
1828 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 3: auth_req:%d\n", p_data->auth_req);
1829 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 4: i_keys=0x%x r_keys=0x%x\n",
1830 p_data->init_keys,
1831 p_data->resp_keys);
1832
1833 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 5: p_data->io_cap = %d auth_req:%d\n",
1834 p_data->io_cap, p_data->auth_req);
1835
1836 /* remove MITM protection requirement if IO cap does not allow it */
1837 if ((p_data->io_cap == BTM_IO_CAP_NONE) && p_data->oob_data == SMP_OOB_NONE) {
1838 p_data->auth_req &= ~BTM_LE_AUTH_REQ_MITM;
1839 }
1840
1841 if (!(p_data->auth_req & SMP_SC_SUPPORT_BIT)) {
1842 /* if Secure Connections are not supported then remove LK derivation,
1843 ** and keypress notifications.
1844 */
1845 BTM_TRACE_DEBUG("%s-SC not supported -> No LK derivation, no keypress notifications",
1846 __func__);
1847 p_data->auth_req &= ~SMP_KP_SUPPORT_BIT;
1848 p_data->init_keys &= ~SMP_SEC_KEY_TYPE_LK;
1849 p_data->resp_keys &= ~SMP_SEC_KEY_TYPE_LK;
1850 }
1851
1852 BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 6: IO_CAP:%d oob_data:%d auth_req:0x%02x\n",
1853 p_data->io_cap, p_data->oob_data, p_data->auth_req);
1854 }
1855 return callback_rc;
1856 }
1857 #endif ///SMP_INCLUDED == TRUE
1858
1859
1860 /*******************************************************************************
1861 **
1862 ** Function btm_ble_br_keys_req
1863 **
1864 ** Description This function is called to handle SMP request for keys sent
1865 ** over BR/EDR.
1866 **
1867 ** Returns void
1868 **
1869 *******************************************************************************/
1870 #if (SMP_INCLUDED == TRUE)
btm_ble_br_keys_req(tBTM_SEC_DEV_REC * p_dev_rec,tBTM_LE_IO_REQ * p_data)1871 UINT8 btm_ble_br_keys_req(tBTM_SEC_DEV_REC *p_dev_rec, tBTM_LE_IO_REQ *p_data)
1872 {
1873 UINT8 callback_rc = BTM_SUCCESS;
1874 BTM_TRACE_DEBUG ("%s\n", __func__);
1875 if (btm_cb.api.p_le_callback) {
1876 /* the callback function implementation may change the IO capability... */
1877 callback_rc = (*btm_cb.api.p_le_callback) (BTM_LE_IO_REQ_EVT, p_dev_rec->bd_addr,
1878 (tBTM_LE_EVT_DATA *)p_data);
1879 }
1880 return callback_rc;
1881 }
1882 #endif ///SMP_INCLUDED
1883
1884
1885 #if (BLE_PRIVACY_SPT == TRUE )
1886 /*******************************************************************************
1887 **
1888 ** Function btm_ble_resolve_random_addr_on_conn_cmpl
1889 **
1890 ** Description resolve random address complete on connection complete event.
1891 **
1892 ** Returns void
1893 **
1894 *******************************************************************************/
btm_ble_resolve_random_addr_on_conn_cmpl(void * p_rec,void * p_data)1895 static void btm_ble_resolve_random_addr_on_conn_cmpl(void *p_rec, void *p_data)
1896 {
1897 UINT8 *p = (UINT8 *)p_data;
1898 tBTM_SEC_DEV_REC *match_rec = (tBTM_SEC_DEV_REC *) p_rec;
1899 UINT8 role, bda_type;
1900 UINT16 handle;
1901 BD_ADDR bda, local_rpa, peer_rpa;
1902 UINT16 conn_interval, conn_latency, conn_timeout;
1903 BOOLEAN match = FALSE;
1904
1905 ++p;
1906 STREAM_TO_UINT16 (handle, p);
1907 STREAM_TO_UINT8 (role, p);
1908 STREAM_TO_UINT8 (bda_type, p);
1909 STREAM_TO_BDADDR (bda, p);
1910 // if the enhanced is true, means the connection is enhanced connect,
1911 // so the packet should include the local Resolvable Private Address and Peer Resolvable Private Address
1912 if(temp_enhanced) {
1913 STREAM_TO_BDADDR(local_rpa, p);
1914 STREAM_TO_BDADDR(peer_rpa, p);
1915 }
1916 STREAM_TO_UINT16 (conn_interval, p);
1917 STREAM_TO_UINT16 (conn_latency, p);
1918 STREAM_TO_UINT16 (conn_timeout, p);
1919
1920 handle = HCID_GET_HANDLE (handle);
1921 BTM_TRACE_EVENT ("%s\n", __func__);
1922
1923 if (match_rec) {
1924 BTM_TRACE_DEBUG("%s matched and resolved random address", __func__);
1925 match = TRUE;
1926 match_rec->ble.active_addr_type = BTM_BLE_ADDR_RRA;
1927 memcpy(match_rec->ble.cur_rand_addr, bda, BD_ADDR_LEN);
1928 if (!btm_ble_init_pseudo_addr (match_rec, bda)) {
1929 /* assign the original address to be the current report address */
1930 memcpy(bda, match_rec->ble.pseudo_addr, BD_ADDR_LEN);
1931 } else {
1932 memcpy(bda, match_rec->bd_addr, BD_ADDR_LEN);
1933 }
1934 } else {
1935 BTM_TRACE_DEBUG("%s unable to match and resolve random address", __func__);
1936 }
1937
1938 btm_ble_connected(bda, handle, HCI_ENCRYPT_MODE_DISABLED, role, bda_type, match);
1939
1940 l2cble_conn_comp (handle, role, bda, bda_type, conn_interval,
1941 conn_latency, conn_timeout);
1942
1943 return;
1944 }
1945 #endif
1946
1947 /*******************************************************************************
1948 **
1949 ** Function btm_ble_connected
1950 **
1951 ** Description This function is when a LE connection to the peer device is
1952 ** establsihed
1953 **
1954 ** Returns void
1955 **
1956 *******************************************************************************/
btm_ble_connected(UINT8 * bda,UINT16 handle,UINT8 enc_mode,UINT8 role,tBLE_ADDR_TYPE addr_type,BOOLEAN addr_matched)1957 void btm_ble_connected (UINT8 *bda, UINT16 handle, UINT8 enc_mode, UINT8 role,
1958 tBLE_ADDR_TYPE addr_type, BOOLEAN addr_matched)
1959 {
1960 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bda);
1961 tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb;
1962 UNUSED(addr_matched);
1963
1964 BTM_TRACE_EVENT ("btm_ble_connected");
1965
1966 /* Commenting out trace due to obf/compilation problems.
1967 */
1968 #if (BT_USE_TRACES == TRUE)
1969 if (p_dev_rec) {
1970 BTM_TRACE_EVENT ("Security Manager: btm_ble_connected : handle:%d enc_mode:%d bda:%x RName:%s",
1971 handle, enc_mode,
1972 (bda[2] << 24) + (bda[3] << 16) + (bda[4] << 8) + bda[5],
1973 p_dev_rec->sec_bd_name);
1974
1975 BTM_TRACE_DEBUG ("btm_ble_connected sec_flags=0x%x", p_dev_rec->sec_flags);
1976 } else {
1977 BTM_TRACE_EVENT ("Security Manager: btm_ble_connected: handle:%d enc_mode:%d bda:%x ",
1978 handle, enc_mode,
1979 (bda[2] << 24) + (bda[3] << 16) + (bda[4] << 8) + bda[5]);
1980 }
1981 #endif
1982
1983 if (!p_dev_rec) {
1984 /* There is no device record for new connection. Allocate one */
1985 if ((p_dev_rec = btm_sec_alloc_dev (bda)) == NULL) {
1986 return;
1987 }
1988 } else { /* Update the timestamp for this device */
1989 p_dev_rec->timestamp = btm_cb.dev_rec_count++;
1990 }
1991
1992 /* update device information */
1993 p_dev_rec->device_type |= BT_DEVICE_TYPE_BLE;
1994 p_dev_rec->ble_hci_handle = handle;
1995 p_dev_rec->ble.ble_addr_type = addr_type;
1996 /* update pseudo address */
1997 memcpy(p_dev_rec->ble.pseudo_addr, bda, BD_ADDR_LEN);
1998
1999 p_dev_rec->role_master = FALSE;
2000 if (role == HCI_ROLE_MASTER) {
2001 p_dev_rec->role_master = TRUE;
2002 }
2003
2004 #if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
2005 if (!addr_matched) {
2006 p_dev_rec->ble.active_addr_type = BTM_BLE_ADDR_PSEUDO;
2007 }
2008
2009 if (p_dev_rec->ble.ble_addr_type == BLE_ADDR_RANDOM && !addr_matched) {
2010 memcpy(p_dev_rec->ble.cur_rand_addr, bda, BD_ADDR_LEN);
2011 }
2012 #endif
2013
2014 p_cb->inq_var.directed_conn = BTM_BLE_CONNECT_EVT;
2015
2016 return;
2017 }
2018
2019 /*****************************************************************************
2020 ** Function btm_ble_conn_complete
2021 **
2022 ** Description LE connection complete.
2023 **
2024 ******************************************************************************/
btm_ble_conn_complete(UINT8 * p,UINT16 evt_len,BOOLEAN enhanced)2025 void btm_ble_conn_complete(UINT8 *p, UINT16 evt_len, BOOLEAN enhanced)
2026 {
2027 #if (BLE_PRIVACY_SPT == TRUE )
2028 UINT8 *p_data = p, peer_addr_type;
2029 #endif ///BLE_PRIVACY_SPT == TRUE
2030 UINT8 role, status, bda_type;
2031 UINT16 handle;
2032 BD_ADDR bda;
2033 BD_ADDR local_rpa, peer_rpa;
2034 UINT16 conn_interval, conn_latency, conn_timeout;
2035 BOOLEAN match = FALSE;
2036 UNUSED(evt_len);
2037 STREAM_TO_UINT8 (status, p);
2038 STREAM_TO_UINT16 (handle, p);
2039 STREAM_TO_UINT8 (role, p);
2040 STREAM_TO_UINT8 (bda_type, p);
2041 STREAM_TO_BDADDR (bda, p);
2042 BTM_TRACE_DEBUG("status = %d, handle = %d, role = %d, bda_type = %d",status,handle,role,bda_type);
2043 if (status == 0) {
2044 if (enhanced) {
2045 STREAM_TO_BDADDR (local_rpa, p);
2046 STREAM_TO_BDADDR (peer_rpa, p);
2047 #if (CONTROLLER_RPA_LIST_ENABLE == TRUE)
2048 BD_ADDR dummy_bda = {0};
2049 /* For controller generates RPA, if resolving list contains no matching entry, it use identity address.
2050 * So we should update own addr type in Host */
2051 if (memcmp(local_rpa, dummy_bda, BD_ADDR_LEN)) {
2052 btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type |= (BLE_ADDR_TYPE_ID_BIT);
2053 BTM_UpdateAddrInfor(btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type, local_rpa);
2054 } else {
2055 btm_cb.ble_ctr_cb.addr_mgnt_cb.own_addr_type &= (~BLE_ADDR_TYPE_ID_BIT);
2056 }
2057 #endif
2058 }
2059 #if (BLE_PRIVACY_SPT == TRUE )
2060 peer_addr_type = bda_type;
2061 match = btm_identity_addr_to_random_pseudo (bda, &bda_type, FALSE);
2062
2063 /* possiblly receive connection complete with resolvable random on
2064 slave role while the device has been paired */
2065
2066 /* It will cause that scanner doesn't send scan request to advertiser
2067 * which has sent IRK to us and we have stored the IRK in controller.
2068 * It is a hardware limitation. The preliminary solution is not to
2069 * send key to the controller, but to resolve the random address in host.
2070 * so we need send the real address information to controller to connect.
2071 * Once the connection is successful, resolve device address whether it is
2072 * slave or master*/
2073
2074 #if CONTROLLER_RPA_LIST_ENABLE
2075 if (!match && role == HCI_ROLE_SLAVE && bda_type != BLE_ADDR_PUBLIC && BTM_BLE_IS_RESOLVE_BDA(bda)) {
2076 #else
2077 if (!match && bda_type != BLE_ADDR_PUBLIC && BTM_BLE_IS_RESOLVE_BDA(bda)) {
2078 #endif
2079 // save the enhanced value to used in btm_ble_resolve_random_addr_on_conn_cmpl func.
2080 temp_enhanced = enhanced;
2081 btm_ble_resolve_random_addr(bda, btm_ble_resolve_random_addr_on_conn_cmpl, p_data);
2082 // set back the temp enhanced to default after used.
2083 temp_enhanced = FALSE;
2084 } else
2085 #endif
2086 {
2087 STREAM_TO_UINT16 (conn_interval, p);
2088 STREAM_TO_UINT16 (conn_latency, p);
2089 STREAM_TO_UINT16 (conn_timeout, p);
2090 handle = HCID_GET_HANDLE (handle);
2091
2092 btm_ble_connected(bda, handle, HCI_ENCRYPT_MODE_DISABLED, role, bda_type, match);
2093 l2cble_conn_comp (handle, role, bda, bda_type, conn_interval,
2094 conn_latency, conn_timeout);
2095
2096 #if (BLE_PRIVACY_SPT == TRUE)
2097 if (enhanced) {
2098 btm_ble_refresh_local_resolvable_private_addr(bda, local_rpa);
2099
2100 if (peer_addr_type & BLE_ADDR_TYPE_ID_BIT) {
2101 btm_ble_refresh_peer_resolvable_private_addr(bda, peer_rpa, BLE_ADDR_RANDOM);
2102 }
2103 }
2104 #endif
2105 }
2106 } else {
2107 role = HCI_ROLE_UNKNOWN;
2108 if (status != HCI_ERR_DIRECTED_ADVERTISING_TIMEOUT) {
2109 btm_ble_set_conn_st(BLE_CONN_IDLE);
2110 #if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
2111 btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, TRUE);
2112 #endif
2113 } else {
2114 #if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
2115 btm_cb.ble_ctr_cb.inq_var.adv_mode = BTM_BLE_ADV_DISABLE;
2116 btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, TRUE);
2117 #endif
2118 }
2119
2120 }
2121
2122 BOOLEAN bg_con = btm_ble_update_mode_operation(role, bda, status);
2123 if (status != HCI_SUCCESS && !bg_con) {
2124 // notify connection failed
2125 l2c_link_hci_disc_comp (handle, status);
2126 #if (SMP_INCLUDED == TRUE)
2127 /* Notify security manager */
2128 btm_sec_disconnected (handle, status);
2129 #endif ///SMP_INCLUDED == TRUE
2130 }
2131 }
2132
2133
2134
2135 /*****************************************************************************
2136 ** Function btm_ble_create_ll_conn_complete
2137 **
2138 ** Description LE connection complete.
2139 **
2140 ******************************************************************************/
2141 void btm_ble_create_ll_conn_complete (UINT8 status)
2142 {
2143 if (status != HCI_SUCCESS) {
2144 btm_ble_set_conn_st(BLE_CONN_IDLE);
2145 btm_ble_update_mode_operation(HCI_ROLE_UNKNOWN, NULL, status);
2146 }
2147 }
2148
2149 /*****************************************************************************
2150 ** Function btm_ble_create_conn_cancel_complete
2151 **
2152 ** Description LE connection cancel complete.
2153 **
2154 ******************************************************************************/
2155 void btm_ble_create_conn_cancel_complete (UINT8 *p)
2156 {
2157 UINT8 status;
2158
2159 STREAM_TO_UINT8 (status, p);
2160
2161 switch (status) {
2162 case HCI_SUCCESS:
2163 if (btm_ble_get_conn_st() == BLE_CONN_CANCEL) {
2164 btm_ble_set_conn_st (BLE_CONN_IDLE);
2165 }
2166 break;
2167 default:
2168 break;
2169 }
2170 }
2171
2172 /*****************************************************************************
2173 ** Function btm_proc_smp_cback
2174 **
2175 ** Description This function is the SMP callback handler.
2176 **
2177 ******************************************************************************/
2178 #if (SMP_INCLUDED == TRUE)
2179 UINT8 btm_proc_smp_cback(tSMP_EVT event, BD_ADDR bd_addr, tSMP_EVT_DATA *p_data)
2180 {
2181 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
2182 UINT8 res = 0;
2183
2184 BTM_TRACE_DEBUG ("btm_proc_smp_cback event = %d", event);
2185
2186 if (p_dev_rec != NULL) {
2187 switch (event) {
2188 case SMP_IO_CAP_REQ_EVT:
2189 btm_ble_io_capabilities_req(p_dev_rec, (tBTM_LE_IO_REQ *)&p_data->io_req);
2190 break;
2191
2192 case SMP_BR_KEYS_REQ_EVT:
2193 btm_ble_br_keys_req(p_dev_rec, (tBTM_LE_IO_REQ *)&p_data->io_req);
2194 break;
2195
2196 case SMP_PASSKEY_REQ_EVT:
2197 case SMP_PASSKEY_NOTIF_EVT:
2198 case SMP_OOB_REQ_EVT:
2199 case SMP_NC_REQ_EVT:
2200 case SMP_SC_OOB_REQ_EVT:
2201 /* fall through */
2202 p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
2203
2204 case SMP_SEC_REQUEST_EVT:
2205 if (event == SMP_SEC_REQUEST_EVT && btm_cb.pairing_state != BTM_PAIR_STATE_IDLE) {
2206 BTM_TRACE_DEBUG("%s: Ignoring SMP Security request", __func__);
2207 break;
2208 }
2209 memcpy (btm_cb.pairing_bda, bd_addr, BD_ADDR_LEN);
2210 p_dev_rec->sec_state = BTM_SEC_STATE_AUTHENTICATING;
2211 btm_cb.pairing_flags |= BTM_PAIR_FLAGS_LE_ACTIVE;
2212 /* fall through */
2213
2214 case SMP_COMPLT_EVT:
2215 if (btm_cb.api.p_le_callback) {
2216 /* the callback function implementation may change the IO capability... */
2217 BTM_TRACE_DEBUG ("btm_cb.api.p_le_callback=%p", btm_cb.api.p_le_callback );
2218 (*btm_cb.api.p_le_callback) (event, bd_addr, (tBTM_LE_EVT_DATA *)p_data);
2219 }
2220
2221 if (event == SMP_COMPLT_EVT) {
2222 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 );
2223
2224 res = (p_data->cmplt.reason == SMP_SUCCESS) ? BTM_SUCCESS : BTM_ERR_PROCESSING;
2225
2226 BTM_TRACE_DEBUG ("after update result=%d sec_level=0x%x sec_flags=0x%x",
2227 res, p_data->cmplt.sec_level , p_dev_rec->sec_flags );
2228
2229 if (p_data->cmplt.is_pair_cancel && btm_cb.api.p_bond_cancel_cmpl_callback ) {
2230 BTM_TRACE_DEBUG ("Pairing Cancel completed");
2231 (*btm_cb.api.p_bond_cancel_cmpl_callback)(BTM_SUCCESS);
2232 }
2233 #if BTM_BLE_CONFORMANCE_TESTING == TRUE
2234 if (res != BTM_SUCCESS) {
2235 if (!btm_cb.devcb.no_disc_if_pair_fail && p_data->cmplt.reason != SMP_CONN_TOUT) {
2236 BTM_TRACE_DEBUG ("Pairing failed - prepare to remove ACL");
2237 l2cu_start_post_bond_timer(p_dev_rec->ble_hci_handle);
2238 } else {
2239 BTM_TRACE_DEBUG ("Pairing failed - Not Removing ACL");
2240 p_dev_rec->sec_state = BTM_SEC_STATE_IDLE;
2241 }
2242 }
2243 #else
2244 if (res != BTM_SUCCESS && p_data->cmplt.reason != SMP_CONN_TOUT) {
2245 BTM_TRACE_DEBUG ("Pairing failed - prepare to remove ACL");
2246 l2cu_start_post_bond_timer(p_dev_rec->ble_hci_handle);
2247 }
2248 #endif
2249
2250 BTM_TRACE_DEBUG ("btm_cb pairing_state=%x pairing_flags=%x",
2251 btm_cb.pairing_state,
2252 btm_cb.pairing_flags);
2253 BTM_TRACE_DEBUG ("btm_cb.pairing_bda %02x:%02x:%02x:%02x:%02x:%02x",
2254 btm_cb.pairing_bda[0], btm_cb.pairing_bda[1], btm_cb.pairing_bda[2],
2255 btm_cb.pairing_bda[3], btm_cb.pairing_bda[4], btm_cb.pairing_bda[5]);
2256
2257 /* Reset btm state only if the callback address matches pairing address*/
2258 if (memcmp(bd_addr, btm_cb.pairing_bda, BD_ADDR_LEN) == 0) {
2259 memset (btm_cb.pairing_bda, 0xff, BD_ADDR_LEN);
2260 btm_cb.pairing_state = BTM_PAIR_STATE_IDLE;
2261 btm_cb.pairing_flags = 0;
2262 }
2263
2264 if (res == BTM_SUCCESS) {
2265 p_dev_rec->sec_state = BTM_SEC_STATE_IDLE;
2266 #if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
2267 /* add all bonded device into resolving list if IRK is available*/
2268 btm_ble_resolving_list_load_dev(p_dev_rec);
2269 #endif
2270 }
2271
2272 btm_sec_dev_rec_cback_event(p_dev_rec, res, TRUE);
2273 }
2274 break;
2275
2276 default:
2277 BTM_TRACE_DEBUG ("unknown event = %d", event);
2278 break;
2279
2280
2281 }
2282 } else {
2283 if (event == SMP_SC_LOC_OOB_DATA_UP_EVT) {
2284 tBTM_LE_EVT_DATA evt_data;
2285 memcpy(&evt_data.local_oob_data, &p_data->loc_oob_data, sizeof(tSMP_LOC_OOB_DATA));
2286 if (btm_cb.api.p_le_callback) {
2287 (*btm_cb.api.p_le_callback)(event, bd_addr, &evt_data);
2288 }
2289 } else {
2290 BTM_TRACE_ERROR("btm_proc_smp_cback received for unknown device");
2291 }
2292 }
2293 return 0;
2294 }
2295 #endif ///SMP_INCLUDED == TRUE
2296
2297
2298 /*******************************************************************************
2299 **
2300 ** Function BTM_BleDataSignature
2301 **
2302 ** Description This function is called to sign the data using AES128 CMAC
2303 ** algorith.
2304 **
2305 ** Parameter bd_addr: target device the data to be signed for.
2306 ** p_text: singing data
2307 ** len: length of the data to be signed.
2308 ** signature: output parameter where data signature is going to
2309 ** be stored.
2310 **
2311 ** Returns TRUE if signing sucessul, otherwise FALSE.
2312 **
2313 *******************************************************************************/
2314 #if (SMP_INCLUDED == TRUE)
2315 BOOLEAN BTM_BleDataSignature (BD_ADDR bd_addr, UINT8 *p_text, UINT16 len,
2316 BLE_SIGNATURE signature)
2317 {
2318 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr);
2319
2320 BTM_TRACE_DEBUG ("%s", __func__);
2321 #endif ///SMP_INCLUDED == TRUE
2322 BOOLEAN ret = FALSE;
2323 #if (SMP_INCLUDED == TRUE)
2324 if (p_rec == NULL) {
2325 BTM_TRACE_ERROR("%s-data signing can not be done from unknown device", __func__);
2326 } else {
2327 UINT8 *p_mac = (UINT8 *)signature;
2328 UINT8 *p_buf, *pp;
2329 if ((p_buf = (UINT8 *)osi_malloc((UINT16)(len + 4))) != NULL) {
2330 BTM_TRACE_DEBUG("%s-Start to generate Local CSRK", __func__);
2331 pp = p_buf;
2332 /* prepare plain text */
2333 if (p_text) {
2334 memcpy(p_buf, p_text, len);
2335 pp = (p_buf + len);
2336 }
2337
2338 UINT32_TO_STREAM(pp, p_rec->ble.keys.local_counter);
2339 UINT32_TO_STREAM(p_mac, p_rec->ble.keys.local_counter);
2340
2341 if ((ret = aes_cipher_msg_auth_code(p_rec->ble.keys.lcsrk, p_buf, (UINT16)(len + 4),
2342 BTM_CMAC_TLEN_SIZE, p_mac)) == TRUE) {
2343 btm_ble_increment_sign_ctr(bd_addr, TRUE);
2344 }
2345
2346 BTM_TRACE_DEBUG("%s p_mac = %p", __func__, p_mac);
2347 BTM_TRACE_DEBUG("p_mac[0] = 0x%02x p_mac[1] = 0x%02x p_mac[2] = 0x%02x p_mac[3] = 0x%02x",
2348 *p_mac, *(p_mac + 1), *(p_mac + 2), *(p_mac + 3));
2349 BTM_TRACE_DEBUG("p_mac[4] = 0x%02x p_mac[5] = 0x%02x p_mac[6] = 0x%02x p_mac[7] = 0x%02x",
2350 *(p_mac + 4), *(p_mac + 5), *(p_mac + 6), *(p_mac + 7));
2351 osi_free(p_buf);
2352 }
2353 }
2354 return ret;
2355 }
2356
2357 /*******************************************************************************
2358 **
2359 ** Function BTM_BleVerifySignature
2360 **
2361 ** Description This function is called to verify the data signature
2362 **
2363 ** Parameter bd_addr: target device the data to be signed for.
2364 ** p_orig: original data before signature.
2365 ** len: length of the signing data
2366 ** counter: counter used when doing data signing
2367 ** p_comp: signature to be compared against.
2368
2369 ** Returns TRUE if signature verified correctly; otherwise FALSE.
2370 **
2371 *******************************************************************************/
2372 BOOLEAN BTM_BleVerifySignature (BD_ADDR bd_addr, UINT8 *p_orig, UINT16 len, UINT32 counter,
2373 UINT8 *p_comp)
2374 {
2375 BOOLEAN verified = FALSE;
2376 tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr);
2377 UINT8 p_mac[BTM_CMAC_TLEN_SIZE];
2378
2379 if (p_rec == NULL || (p_rec && !(p_rec->ble.key_type & BTM_LE_KEY_PCSRK))) {
2380 BTM_TRACE_ERROR("can not verify signature for unknown device");
2381 } else if (counter < p_rec->ble.keys.counter) {
2382 BTM_TRACE_ERROR("signature received with out dated sign counter");
2383 } else if (p_orig == NULL) {
2384 BTM_TRACE_ERROR("No signature to verify");
2385 } else {
2386 BTM_TRACE_DEBUG ("%s rcv_cnt=%d >= expected_cnt=%d", __func__, counter,
2387 p_rec->ble.keys.counter);
2388
2389 if (aes_cipher_msg_auth_code(p_rec->ble.keys.pcsrk, p_orig, len, BTM_CMAC_TLEN_SIZE, p_mac)) {
2390 if (memcmp(p_mac, p_comp, BTM_CMAC_TLEN_SIZE) == 0) {
2391 btm_ble_increment_sign_ctr(bd_addr, FALSE);
2392 verified = TRUE;
2393 }
2394 }
2395 }
2396 return verified;
2397 }
2398 #endif /* SMP_INCLUDED */
2399
2400
2401 /*******************************************************************************
2402 **
2403 ** Function BTM_GetLeSecurityState
2404 **
2405 ** Description This function is called to get security mode 1 flags and
2406 ** encryption key size for LE peer.
2407 **
2408 ** Returns BOOLEAN TRUE if LE device is found, FALSE otherwise.
2409 **
2410 *******************************************************************************/
2411 BOOLEAN BTM_GetLeSecurityState (BD_ADDR bd_addr, UINT8 *p_le_dev_sec_flags, UINT8 *p_le_key_size)
2412 {
2413 #if (BLE_INCLUDED == TRUE && SMP_INCLUDED == TRUE)
2414 tBTM_SEC_DEV_REC *p_dev_rec;
2415 UINT16 dev_rec_sec_flags;
2416 #endif
2417
2418 *p_le_dev_sec_flags = 0;
2419 *p_le_key_size = 0;
2420
2421 #if (BLE_INCLUDED == TRUE && SMP_INCLUDED == TRUE)
2422 if ((p_dev_rec = btm_find_dev (bd_addr)) == NULL) {
2423 BTM_TRACE_ERROR ("%s fails", __func__);
2424 return (FALSE);
2425 }
2426
2427 if (p_dev_rec->ble_hci_handle == BTM_SEC_INVALID_HANDLE) {
2428 BTM_TRACE_ERROR ("%s-this is not LE device", __func__);
2429 return (FALSE);
2430 }
2431
2432 dev_rec_sec_flags = p_dev_rec->sec_flags;
2433
2434 if (dev_rec_sec_flags & BTM_SEC_LE_ENCRYPTED) {
2435 /* link is encrypted with LTK or STK */
2436 *p_le_key_size = p_dev_rec->enc_key_size;
2437 *p_le_dev_sec_flags |= BTM_SEC_LE_LINK_ENCRYPTED;
2438
2439 *p_le_dev_sec_flags |= (dev_rec_sec_flags & BTM_SEC_LE_AUTHENTICATED)
2440 ? BTM_SEC_LE_LINK_PAIRED_WITH_MITM /* set auth LTK flag */
2441 : BTM_SEC_LE_LINK_PAIRED_WITHOUT_MITM; /* set unauth LTK flag */
2442 } else if (p_dev_rec->ble.key_type & BTM_LE_KEY_PENC) {
2443 /* link is unencrypted, still LTK is available */
2444 *p_le_key_size = p_dev_rec->ble.keys.key_size;
2445
2446 *p_le_dev_sec_flags |= (dev_rec_sec_flags & BTM_SEC_LE_LINK_KEY_AUTHED)
2447 ? BTM_SEC_LE_LINK_PAIRED_WITH_MITM /* set auth LTK flag */
2448 : BTM_SEC_LE_LINK_PAIRED_WITHOUT_MITM; /* set unauth LTK flag */
2449 }
2450
2451 BTM_TRACE_DEBUG ("%s - le_dev_sec_flags: 0x%02x, le_key_size: %d",
2452 __func__, *p_le_dev_sec_flags, *p_le_key_size);
2453
2454 return TRUE;
2455 #else
2456 return FALSE;
2457 #endif
2458 }
2459
2460 /*******************************************************************************
2461 **
2462 ** Function BTM_BleSecurityProcedureIsRunning
2463 **
2464 ** Description This function indicates if LE security procedure is
2465 ** currently running with the peer.
2466 **
2467 ** Returns BOOLEAN TRUE if security procedure is running, FALSE otherwise.
2468 **
2469 *******************************************************************************/
2470 BOOLEAN BTM_BleSecurityProcedureIsRunning(BD_ADDR bd_addr)
2471 {
2472 #if (BLE_INCLUDED == TRUE)
2473 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
2474
2475 if (p_dev_rec == NULL) {
2476 BTM_TRACE_ERROR ("%s device with BDA: %08x%04x is not found",
2477 __func__, (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
2478 (bd_addr[4] << 8) + bd_addr[5]);
2479 return FALSE;
2480 }
2481
2482 return (p_dev_rec->sec_state == BTM_SEC_STATE_ENCRYPTING ||
2483 p_dev_rec->sec_state == BTM_SEC_STATE_AUTHENTICATING);
2484 #else
2485 return FALSE;
2486 #endif
2487 }
2488
2489 /*******************************************************************************
2490 **
2491 ** Function BTM_BleGetSupportedKeySize
2492 **
2493 ** Description This function gets the maximum encryption key size in bytes
2494 ** the local device can suport.
2495 ** record.
2496 **
2497 ** Returns the key size or 0 if the size can't be retrieved.
2498 **
2499 *******************************************************************************/
2500 extern UINT8 BTM_BleGetSupportedKeySize (BD_ADDR bd_addr)
2501 {
2502 #ifndef L2CAP_LE_COC_INCLUDED
2503 #define L2CAP_LE_COC_INCLUDED FALSE
2504 #endif
2505 #if ((BLE_INCLUDED == TRUE) && (L2CAP_LE_COC_INCLUDED == TRUE))
2506 tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
2507 tBTM_LE_IO_REQ dev_io_cfg;
2508 UINT8 callback_rc;
2509
2510 if (!p_dev_rec) {
2511 BTM_TRACE_ERROR ("%s device with BDA: %08x%04x is not found",
2512 __func__, (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
2513 (bd_addr[4] << 8) + bd_addr[5]);
2514 return 0;
2515 }
2516
2517 if (btm_cb.api.p_le_callback == NULL) {
2518 BTM_TRACE_ERROR ("%s can't access supported key size", __func__);
2519 return 0;
2520 }
2521
2522 callback_rc = (*btm_cb.api.p_le_callback) (BTM_LE_IO_REQ_EVT, p_dev_rec->bd_addr,
2523 (tBTM_LE_EVT_DATA *) &dev_io_cfg);
2524
2525 if (callback_rc != BTM_SUCCESS) {
2526 BTM_TRACE_ERROR ("%s can't access supported key size", __func__);
2527 return 0;
2528 }
2529
2530 BTM_TRACE_DEBUG ("%s device supports key size = %d", __func__, dev_io_cfg.max_key_size);
2531 return (dev_io_cfg.max_key_size);
2532 #else
2533 return 0;
2534 #endif
2535 }
2536
2537 /*******************************************************************************
2538 ** Utility functions for LE device IR/ER generation
2539 *******************************************************************************/
2540 /*******************************************************************************
2541 **
2542 ** Function btm_notify_new_key
2543 **
2544 ** Description This function is to notify application new keys have been
2545 ** generated.
2546 **
2547 ** Returns void
2548 **
2549 *******************************************************************************/
2550 #if (SMP_INCLUDED == TRUE)
2551 static void btm_notify_new_key(UINT8 key_type)
2552 {
2553 tBTM_BLE_LOCAL_KEYS *p_locak_keys = NULL;
2554
2555 BTM_TRACE_DEBUG ("btm_notify_new_key key_type=%d", key_type);
2556
2557 if (btm_cb.api.p_le_key_callback) {
2558 switch (key_type) {
2559 case BTM_BLE_KEY_TYPE_ID:
2560 BTM_TRACE_DEBUG ("BTM_BLE_KEY_TYPE_ID");
2561 p_locak_keys = (tBTM_BLE_LOCAL_KEYS *)&btm_cb.devcb.id_keys;
2562 break;
2563
2564 case BTM_BLE_KEY_TYPE_ER:
2565 BTM_TRACE_DEBUG ("BTM_BLE_KEY_TYPE_ER");
2566 p_locak_keys = (tBTM_BLE_LOCAL_KEYS *)&btm_cb.devcb.ble_encryption_key_value;
2567 break;
2568
2569 default:
2570 BTM_TRACE_ERROR("unknown key type: %d", key_type);
2571 break;
2572 }
2573 if (p_locak_keys != NULL) {
2574 (*btm_cb.api.p_le_key_callback) (key_type, p_locak_keys);
2575 }
2576 }
2577 }
2578
2579 /*******************************************************************************
2580 **
2581 ** Function btm_ble_process_er2
2582 **
2583 ** Description This function is called when ER is generated, store it in
2584 ** local control block.
2585 **
2586 ** Returns void
2587 **
2588 *******************************************************************************/
2589 static void btm_ble_process_er2(tBTM_RAND_ENC *p)
2590 {
2591 BTM_TRACE_DEBUG ("btm_ble_process_er2");
2592
2593 if (p && p->opcode == HCI_BLE_RAND) {
2594 memcpy(&btm_cb.devcb.ble_encryption_key_value[8], p->param_buf, BT_OCTET8_LEN);
2595 btm_notify_new_key(BTM_BLE_KEY_TYPE_ER);
2596 } else {
2597 BTM_TRACE_ERROR("Generating ER2 exception.");
2598 memset(&btm_cb.devcb.ble_encryption_key_value, 0, sizeof(BT_OCTET16));
2599 }
2600 }
2601
2602 /*******************************************************************************
2603 **
2604 ** Function btm_ble_process_er
2605 **
2606 ** Description This function is called when ER is generated, store it in
2607 ** local control block.
2608 **
2609 ** Returns void
2610 **
2611 *******************************************************************************/
2612 static void btm_ble_process_er(tBTM_RAND_ENC *p)
2613 {
2614 BTM_TRACE_DEBUG ("btm_ble_process_er");
2615
2616 if (p && p->opcode == HCI_BLE_RAND) {
2617 memcpy(&btm_cb.devcb.ble_encryption_key_value[0], p->param_buf, BT_OCTET8_LEN);
2618
2619 if (!btsnd_hcic_ble_rand((void *)btm_ble_process_er2)) {
2620 memset(&btm_cb.devcb.ble_encryption_key_value, 0, sizeof(BT_OCTET16));
2621 BTM_TRACE_ERROR("Generating ER2 failed.");
2622 }
2623 } else {
2624 BTM_TRACE_ERROR("Generating ER1 exception.");
2625 }
2626 }
2627
2628 /*******************************************************************************
2629 **
2630 ** Function btm_ble_process_irk
2631 **
2632 ** Description This function is called when IRK is generated, store it in
2633 ** local control block.
2634 **
2635 ** Returns void
2636 **
2637 *******************************************************************************/
2638 static void btm_ble_process_irk(tSMP_ENC *p)
2639 {
2640 BTM_TRACE_DEBUG ("btm_ble_process_irk");
2641 if (p && p->opcode == HCI_BLE_ENCRYPT) {
2642 memcpy(btm_cb.devcb.id_keys.irk, p->param_buf, BT_OCTET16_LEN);
2643 btm_notify_new_key(BTM_BLE_KEY_TYPE_ID);
2644
2645 #if (CONTROLLER_RPA_LIST_ENABLE == TRUE)
2646 btm_ble_add_default_entry_to_resolving_list();
2647 #endif
2648
2649 #if (BLE_PRIVACY_SPT == TRUE) && (CONTROLLER_RPA_LIST_ENABLE == FALSE)
2650 /* if privacy is enabled, new RPA should be calculated */
2651 if (btm_cb.ble_ctr_cb.privacy_mode != BTM_PRIVACY_NONE) {
2652 btm_gen_resolvable_private_addr((void *)btm_gen_resolve_paddr_low);
2653 }
2654 #endif
2655 } else {
2656 BTM_TRACE_ERROR("Generating IRK exception.");
2657 }
2658
2659 /* proceed generate ER */
2660 if (!btsnd_hcic_ble_rand((void *)btm_ble_process_er)) {
2661 BTM_TRACE_ERROR("Generating ER failed.");
2662 }
2663 }
2664
2665
2666 /*******************************************************************************
2667 **
2668 ** Function btm_ble_process_dhk
2669 **
2670 ** Description This function is called when DHK is calculated, store it in
2671 ** local control block, and proceed to generate ER, a 128-bits
2672 ** random number.
2673 **
2674 ** Returns void
2675 **
2676 *******************************************************************************/
2677 static void btm_ble_process_dhk(tSMP_ENC *p)
2678 {
2679 UINT8 btm_ble_irk_pt = 0x01;
2680 tSMP_ENC output;
2681
2682 BTM_TRACE_DEBUG ("btm_ble_process_dhk");
2683
2684 if (p && p->opcode == HCI_BLE_ENCRYPT) {
2685 memcpy(btm_cb.devcb.id_keys.dhk, p->param_buf, BT_OCTET16_LEN);
2686 BTM_TRACE_DEBUG("BLE DHK generated.");
2687
2688 /* IRK = D1(IR, 1) */
2689 if (!SMP_Encrypt(btm_cb.devcb.id_keys.ir, BT_OCTET16_LEN, &btm_ble_irk_pt,
2690 1, &output)) {
2691 /* reset all identity root related key */
2692 memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
2693 } else {
2694 btm_ble_process_irk(&output);
2695 }
2696 } else {
2697 /* reset all identity root related key */
2698 memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
2699 }
2700 }
2701
2702 /*******************************************************************************
2703 **
2704 ** Function btm_ble_process_ir2
2705 **
2706 ** Description This function is called when IR is generated, proceed to calculate
2707 ** DHK = Eir({0x03, 0, 0 ...})
2708 **
2709 **
2710 ** Returns void
2711 **
2712 *******************************************************************************/
2713 static void btm_ble_process_ir2(tBTM_RAND_ENC *p)
2714 {
2715 UINT8 btm_ble_dhk_pt = 0x03;
2716 tSMP_ENC output;
2717
2718 BTM_TRACE_DEBUG ("btm_ble_process_ir2");
2719
2720 if (p && p->opcode == HCI_BLE_RAND) {
2721 /* remembering in control block */
2722 memcpy(&btm_cb.devcb.id_keys.ir[8], p->param_buf, BT_OCTET8_LEN);
2723 /* generate DHK= Eir({0x03, 0x00, 0x00 ...}) */
2724
2725
2726 SMP_Encrypt(btm_cb.devcb.id_keys.ir, BT_OCTET16_LEN, &btm_ble_dhk_pt,
2727 1, &output);
2728 btm_ble_process_dhk(&output);
2729
2730 BTM_TRACE_DEBUG("BLE IR generated.");
2731 } else {
2732 memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
2733 }
2734 }
2735
2736 /*******************************************************************************
2737 **
2738 ** Function btm_ble_process_ir
2739 **
2740 ** Description This function is called when IR is generated, proceed to calculate
2741 ** DHK = Eir({0x02, 0, 0 ...})
2742 **
2743 **
2744 ** Returns void
2745 **
2746 *******************************************************************************/
2747 static void btm_ble_process_ir(tBTM_RAND_ENC *p)
2748 {
2749 BTM_TRACE_DEBUG ("btm_ble_process_ir");
2750
2751 if (p && p->opcode == HCI_BLE_RAND) {
2752 /* remembering in control block */
2753 memcpy(btm_cb.devcb.id_keys.ir, p->param_buf, BT_OCTET8_LEN);
2754
2755 if (!btsnd_hcic_ble_rand((void *)btm_ble_process_ir2)) {
2756 BTM_TRACE_ERROR("Generating IR2 failed.");
2757 memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
2758 }
2759 }
2760 }
2761
2762 /*******************************************************************************
2763 **
2764 ** Function btm_ble_reset_id
2765 **
2766 ** Description This function is called to reset LE device identity.
2767 **
2768 ** Returns void
2769 **
2770 *******************************************************************************/
2771 void btm_ble_reset_id( void )
2772 {
2773 BTM_TRACE_DEBUG ("btm_ble_reset_id");
2774
2775 /* regenrate Identity Root*/
2776 if (!btsnd_hcic_ble_rand((void *)btm_ble_process_ir)) {
2777 BTM_TRACE_DEBUG("Generating IR failed.");
2778 }
2779 }
2780 #endif ///SMP_INCLUDED == TRUE
2781
2782 #if BTM_BLE_CONFORMANCE_TESTING == TRUE
2783 /*******************************************************************************
2784 **
2785 ** Function btm_ble_set_no_disc_if_pair_fail
2786 **
2787 ** Description This function indicates that whether no disconnect of the ACL
2788 ** should be used if pairing failed
2789 **
2790 ** Returns void
2791 **
2792 *******************************************************************************/
2793 void btm_ble_set_no_disc_if_pair_fail(BOOLEAN disable_disc )
2794 {
2795 BTM_TRACE_DEBUG ("btm_ble_set_disc_enable_if_pair_fail disable_disc=%d", disable_disc);
2796 btm_cb.devcb.no_disc_if_pair_fail = disable_disc;
2797 }
2798
2799 /*******************************************************************************
2800 **
2801 ** Function btm_ble_set_test_mac_value
2802 **
2803 ** Description This function set test MAC value
2804 **
2805 ** Returns void
2806 **
2807 *******************************************************************************/
2808 void btm_ble_set_test_mac_value(BOOLEAN enable, UINT8 *p_test_mac_val )
2809 {
2810 BTM_TRACE_DEBUG ("btm_ble_set_test_mac_value enable=%d", enable);
2811 btm_cb.devcb.enable_test_mac_val = enable;
2812 memcpy(btm_cb.devcb.test_mac, p_test_mac_val, BT_OCTET8_LEN);
2813 }
2814
2815 /*******************************************************************************
2816 **
2817 ** Function btm_ble_set_test_local_sign_cntr_value
2818 **
2819 ** Description This function set test local sign counter value
2820 **
2821 ** Returns void
2822 **
2823 *******************************************************************************/
2824 void btm_ble_set_test_local_sign_cntr_value(BOOLEAN enable, UINT32 test_local_sign_cntr )
2825 {
2826 BTM_TRACE_DEBUG ("btm_ble_set_test_local_sign_cntr_value enable=%d local_sign_cntr=%d",
2827 enable, test_local_sign_cntr);
2828 btm_cb.devcb.enable_test_local_sign_cntr = enable;
2829 btm_cb.devcb.test_local_sign_cntr = test_local_sign_cntr;
2830 }
2831
2832 /*******************************************************************************
2833 **
2834 ** Function btm_set_random_address
2835 **
2836 ** Description This function set a random address to local controller.
2837 **
2838 ** Returns void
2839 **
2840 *******************************************************************************/
2841 void btm_set_random_address(BD_ADDR random_bda)
2842 {
2843 tBTM_LE_RANDOM_CB *p_cb = &btm_cb.ble_ctr_cb.addr_mgnt_cb;
2844 BOOLEAN adv_mode = btm_cb.ble_ctr_cb.inq_var.adv_mode ;
2845
2846 BTM_TRACE_DEBUG ("btm_set_random_address");
2847
2848 if (adv_mode == BTM_BLE_ADV_ENABLE) {
2849 btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_DISABLE);
2850 }
2851
2852 memcpy(p_cb->private_addr, random_bda, BD_ADDR_LEN);
2853 btsnd_hcic_ble_set_random_addr(p_cb->private_addr);
2854
2855 if (adv_mode == BTM_BLE_ADV_ENABLE) {
2856 btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_ENABLE);
2857 }
2858
2859
2860 }
2861
2862 /*******************************************************************************
2863 **
2864 ** Function btm_ble_set_keep_rfu_in_auth_req
2865 **
2866 ** Description This function indicates if RFU bits have to be kept as is
2867 ** (by default they have to be set to 0 by the sender).
2868 **
2869 ** Returns void
2870 **
2871 *******************************************************************************/
2872 void btm_ble_set_keep_rfu_in_auth_req(BOOLEAN keep_rfu)
2873 {
2874 BTM_TRACE_DEBUG ("btm_ble_set_keep_rfu_in_auth_req keep_rfus=%d", keep_rfu);
2875 btm_cb.devcb.keep_rfu_in_auth_req = keep_rfu;
2876 }
2877
2878 #endif /* BTM_BLE_CONFORMANCE_TESTING */
2879
2880 /*******************************************************************************
2881 **
2882 ** Function btm_get_current_conn_params
2883 **
2884 ** Description This function is called to get current connection parameters
2885 ** information of the device
2886 **
2887 ** Returns TRUE if the information is geted, else FALSE
2888 **
2889 *******************************************************************************/
2890
2891 BOOLEAN btm_get_current_conn_params(BD_ADDR bda, UINT16 *interval, UINT16 *latency, UINT16 *timeout)
2892 {
2893 if( (interval == NULL) || (latency == NULL) || (timeout == NULL) ) {
2894 BTM_TRACE_ERROR("%s invalid parameters ", __func__);
2895 return FALSE;
2896 }
2897
2898 tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr(bda, BT_TRANSPORT_LE);
2899 if(p_lcb != NULL) {
2900 (*interval) = p_lcb->current_used_conn_interval;
2901 (*latency) = p_lcb->current_used_conn_latency;
2902 (*timeout) = p_lcb->current_used_conn_timeout;
2903 return TRUE;
2904 }
2905 BTM_TRACE_WARNING("%s Device is not connected", __func__);
2906
2907 return FALSE;
2908 }
2909
2910
2911 #endif /* BLE_INCLUDED */
2912
