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4200865dd1
esp-idf/components/bt/host/bluedroid/stack/btm/btm_ble.c
“YangZhao” 4200865dd1 Fix the high-impact issues from the code analysis report from customer. 
For the CID10564,10384,10280,10098,10038,The memory was released in other place.
For the CID10365,it release the memory in the function when sent successfully.
For the CID10268,10011, we need not change the code.
2021-11-22 19:55:03 +08:00

2787 lines
100 KiB
C
Raw Blame History

/******************************************************************************
*
* Copyright (C) 1999-2012 Broadcom Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/******************************************************************************
*
* This file contains functions for BLE device control utilities, and LE
* security functions.
*
******************************************************************************/
#include "common/bt_target.h"
#include <string.h>
#include "stack/bt_types.h"
#include "stack/hcimsgs.h"
#include "stack/btu.h"
#include "btm_int.h"
#include "stack/btm_ble_api.h"
#include "stack/smp_api.h"
#include "l2c_int.h"
#include "stack/gap_api.h"
//#include "bt_utils.h"
#include "device/controller.h"
//#define LOG_TAG "bt_btm_ble"
//#include "osi/include/log.h"
#if BLE_INCLUDED == TRUE
#if SMP_INCLUDED == TRUE
// The temp variable to pass parameter between functions when in the connected event callback.
static BOOLEAN temp_enhanced = FALSE;
extern BOOLEAN aes_cipher_msg_auth_code(BT_OCTET16 key, UINT8 *input, UINT16 length,
UINT16 tlen, UINT8 *p_signature);
extern void smp_link_encrypted(BD_ADDR bda, UINT8 encr_enable);
extern BOOLEAN smp_proc_ltk_request(BD_ADDR bda);
#endif
extern void gatt_notify_enc_cmpl(BD_ADDR bd_addr);
/*******************************************************************************/
/* External Function to be called by other modules */
/*******************************************************************************/
/********************************************************
**
** Function BTM_SecAddBleDevice
**
** Description Add/modify device. This function will be normally called
** during host startup to restore all required information
** for a LE device stored in the NVRAM.
**
** Parameters: bd_addr - BD address of the peer
** bd_name - Name of the peer device. NULL if unknown.
** dev_type - Remote device's device type.
** addr_type - LE device address type.
** auth_mode - auth mode
**
** Returns TRUE if added OK, else FALSE
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
BOOLEAN BTM_SecAddBleDevice (BD_ADDR bd_addr, BD_NAME bd_name, tBT_DEVICE_TYPE dev_type,
tBLE_ADDR_TYPE addr_type, UINT32 auth_mode)
{
tBTM_SEC_DEV_REC *p_dev_rec;
UINT8 i = 0;
tBTM_INQ_INFO *p_info = NULL;
BTM_TRACE_DEBUG ("BTM_SecAddBleDevice dev_type=0x%x", dev_type);
p_dev_rec = btm_find_dev (bd_addr);
if (!p_dev_rec) {
BTM_TRACE_DEBUG("Add a new device");
/* There is no device record, allocate one.
* If we can not find an empty spot for this one, let it fail. */
for (i = 0; i < BTM_SEC_MAX_DEVICE_RECORDS; i++) {
if (!(btm_cb.sec_dev_rec[i].sec_flags & BTM_SEC_IN_USE)) {
BTM_TRACE_DEBUG ("allocate a new dev rec idx=0x%x ", i );
p_dev_rec = &btm_cb.sec_dev_rec[i];
/* Mark this record as in use and initialize */
memset (p_dev_rec, 0, sizeof (tBTM_SEC_DEV_REC));
p_dev_rec->sec_flags = BTM_SEC_IN_USE;
memcpy (p_dev_rec->bd_addr, bd_addr, BD_ADDR_LEN);
p_dev_rec->hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_BR_EDR);
p_dev_rec->ble_hci_handle = BTM_GetHCIConnHandle (bd_addr, BT_TRANSPORT_LE);
/* update conn params, use default value for background connection params */
p_dev_rec->conn_params.min_conn_int =
p_dev_rec->conn_params.max_conn_int =
p_dev_rec->conn_params.supervision_tout =
p_dev_rec->conn_params.slave_latency = BTM_BLE_CONN_PARAM_UNDEF;
BTM_TRACE_DEBUG ("hci_handl=0x%x ", p_dev_rec->ble_hci_handle );
break;
}
}
if (!p_dev_rec) {
return (FALSE);
}
} else {
BTM_TRACE_DEBUG("Device already exist");
}
memset(p_dev_rec->sec_bd_name, 0, sizeof(tBTM_BD_NAME));
if (bd_name && bd_name[0]) {
p_dev_rec->sec_flags |= BTM_SEC_NAME_KNOWN;
BCM_STRNCPY_S ((char *)p_dev_rec->sec_bd_name, (char *)bd_name, BTM_MAX_REM_BD_NAME_LEN);
}
p_dev_rec->device_type |= dev_type;
p_dev_rec->ble.ble_addr_type = addr_type;
p_dev_rec->ble.auth_mode = auth_mode;
memcpy (p_dev_rec->ble.pseudo_addr, bd_addr, BD_ADDR_LEN);
/* sync up with the Inq Data base*/
p_info = BTM_InqDbRead(bd_addr);
if (p_info) {
p_info->results.ble_addr_type = p_dev_rec->ble.ble_addr_type ;
p_info->results.device_type = p_dev_rec->device_type;
BTM_TRACE_DEBUG ("InqDb device_type =0x%x addr_type=0x%x",
p_info->results.device_type, p_info->results.ble_addr_type);
}
return (TRUE);
}
#endif ///SMP_INCLUDED == TRUE
/*******************************************************************************
**
** Function BTM_SecAddBleKey
**
** Description Add/modify LE device information. This function will be
** normally called during host startup to restore all required
** information stored in the NVRAM.
**
** Parameters: bd_addr - BD address of the peer
** p_le_key - LE key values.
** key_type - LE SMP key type.
*
** Returns TRUE if added OK, else FALSE
**
*******************************************************************************/
#if SMP_INCLUDED == TRUE
BOOLEAN BTM_SecAddBleKey (BD_ADDR bd_addr, tBTM_LE_KEY_VALUE *p_le_key, tBTM_LE_KEY_TYPE key_type)
{
tBTM_SEC_DEV_REC *p_dev_rec;
BTM_TRACE_DEBUG ("BTM_SecAddBleKey");
p_dev_rec = btm_find_dev (bd_addr);
if (!p_dev_rec || !p_le_key ||
(key_type != BTM_LE_KEY_PENC && key_type != BTM_LE_KEY_PID &&
key_type != BTM_LE_KEY_PCSRK && key_type != BTM_LE_KEY_LENC &&
key_type != BTM_LE_KEY_LCSRK && key_type != BTM_LE_KEY_LID)) {
BTM_TRACE_WARNING ("BTM_SecAddBleKey() Wrong Type, or No Device record \
for bdaddr: %08x%04x, Type: %d",
(bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
(bd_addr[4] << 8) + bd_addr[5], key_type);
return (FALSE);
}
BTM_TRACE_DEBUG ("BTM_SecAddLeKey() BDA: %08x%04x, Type: 0x%02x",
(bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
(bd_addr[4] << 8) + bd_addr[5], key_type);
btm_sec_save_le_key (bd_addr, key_type, p_le_key, FALSE);
#if (BLE_PRIVACY_SPT == TRUE)
if (key_type == BTM_LE_KEY_PID || key_type == BTM_LE_KEY_LID) {
btm_ble_resolving_list_load_dev (p_dev_rec);
}
#endif
return (TRUE);
}
#endif
/*******************************************************************************
**
** Function BTM_BleLoadLocalKeys
**
** Description Local local identity key, encryption root or sign counter.
**
** Parameters: key_type: type of key, can be BTM_BLE_KEY_TYPE_ID, BTM_BLE_KEY_TYPE_ER
** or BTM_BLE_KEY_TYPE_COUNTER.
** p_key: pointer to the key.
*
** Returns non2.
**
*******************************************************************************/
void BTM_BleLoadLocalKeys(UINT8 key_type, tBTM_BLE_LOCAL_KEYS *p_key)
{
tBTM_DEVCB *p_devcb = &btm_cb.devcb;
BTM_TRACE_DEBUG ("%s", __func__);
if (p_key != NULL) {
switch (key_type) {
case BTM_BLE_KEY_TYPE_ID:
memcpy(&p_devcb->id_keys, &p_key->id_keys, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
break;
case BTM_BLE_KEY_TYPE_ER:
memcpy(p_devcb->ble_encryption_key_value, p_key->er, sizeof(BT_OCTET16));
break;
default:
BTM_TRACE_ERROR("unknow local key type: %d", key_type);
break;
}
}
}
/*******************************************************************************
**
** Function BTM_GetDeviceEncRoot
**
** Description This function is called to read the local device encryption
** root.
**
** Returns void
** the local device ER is copied into ble_encr_key_value
**
*******************************************************************************/
void BTM_GetDeviceEncRoot (BT_OCTET16 ble_encr_key_value)
{
BTM_TRACE_DEBUG ("%s", __func__);
memcpy (ble_encr_key_value, btm_cb.devcb.ble_encryption_key_value, BT_OCTET16_LEN);
}
/*******************************************************************************
**
** Function BTM_GetDeviceIDRoot
**
** Description This function is called to read the local device identity
** root.
**
** Returns void
** the local device IR is copied into irk
**
*******************************************************************************/
void BTM_GetDeviceIDRoot (BT_OCTET16 irk)
{
BTM_TRACE_DEBUG ("BTM_GetDeviceIDRoot ");
memcpy (irk, btm_cb.devcb.id_keys.irk, BT_OCTET16_LEN);
}
/*******************************************************************************
**
** Function BTM_GetDeviceDHK
**
** Description This function is called to read the local device DHK.
**
** Returns void
** the local device DHK is copied into dhk
**
*******************************************************************************/
void BTM_GetDeviceDHK (BT_OCTET16 dhk)
{
BTM_TRACE_DEBUG ("BTM_GetDeviceDHK");
memcpy (dhk, btm_cb.devcb.id_keys.dhk, BT_OCTET16_LEN);
}
/*******************************************************************************
**
** Function BTM_ReadConnectionAddr
**
** Description This function is called to get the local device address information
** .
**
** Returns void
**
*******************************************************************************/
void BTM_ReadConnectionAddr (BD_ADDR remote_bda, BD_ADDR local_conn_addr, tBLE_ADDR_TYPE *p_addr_type)
{
tACL_CONN *p_acl = btm_bda_to_acl(remote_bda, BT_TRANSPORT_LE);
if (p_acl == NULL) {
BTM_TRACE_ERROR("No connection exist!");
return;
}
memcpy(local_conn_addr, p_acl->conn_addr, BD_ADDR_LEN);
* p_addr_type = p_acl->conn_addr_type;
BTM_TRACE_DEBUG ("BTM_ReadConnectionAddr address type: %d addr: 0x%02x",
p_acl->conn_addr_type, p_acl->conn_addr[0]);
}
/*******************************************************************************
**
** Function BTM_IsBleConnection
**
** Description This function is called to check if the connection handle
** for an LE link
**
** Returns TRUE if connection is LE link, otherwise FALSE.
**
*******************************************************************************/
BOOLEAN BTM_IsBleConnection (UINT16 conn_handle)
{
#if (BLE_INCLUDED == TRUE)
UINT8 xx;
tACL_CONN *p;
BTM_TRACE_API ("BTM_IsBleConnection: conn_handle: %d", conn_handle);
xx = btm_handle_to_acl_index (conn_handle);
if (xx >= MAX_L2CAP_LINKS) {
return FALSE;
}
p = &btm_cb.acl_db[xx];
return (p->transport == BT_TRANSPORT_LE);
#else
return FALSE;
#endif
}
/*******************************************************************************
**
** Function BTM_ReadRemoteConnectionAddr
**
** Description This function is read the remote device address currently used
**
** Parameters pseudo_addr: pseudo random address available
** conn_addr:connection address used
** p_addr_type : BD Address type, Public or Random of the address used
**
** Returns BOOLEAN , TRUE if connection to remote device exists, else FALSE
**
*******************************************************************************/
BOOLEAN BTM_ReadRemoteConnectionAddr(BD_ADDR pseudo_addr, BD_ADDR conn_addr,
tBLE_ADDR_TYPE *p_addr_type)
{
BOOLEAN st = TRUE;
#if (BLE_PRIVACY_SPT == TRUE)
tACL_CONN *p = btm_bda_to_acl (pseudo_addr, BT_TRANSPORT_LE);
if (p == NULL) {
BTM_TRACE_ERROR("BTM_ReadRemoteConnectionAddr can not find connection"
" with matching address");
return FALSE;
}
memcpy(conn_addr, p->active_remote_addr, BD_ADDR_LEN);
*p_addr_type = p->active_remote_addr_type;
#else
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(pseudo_addr);
memcpy(conn_addr, pseudo_addr, BD_ADDR_LEN);
if (p_dev_rec != NULL) {
*p_addr_type = p_dev_rec->ble.ble_addr_type;
}
#endif
return st;
}
/*******************************************************************************
**
** Function BTM_SecurityGrant
**
** Description This function is called to grant security process.
**
** Parameters bd_addr - peer device bd address.
** res - result of the operation BTM_SUCCESS if success.
** Otherwise, BTM_REPEATED_ATTEMPTS is too many attempts.
**
** Returns None
**
*******************************************************************************/
void BTM_SecurityGrant(BD_ADDR bd_addr, UINT8 res)
{
#if SMP_INCLUDED == TRUE
tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_REPEATED_ATTEMPTS;
BTM_TRACE_DEBUG ("BTM_SecurityGrant");
SMP_SecurityGrant(bd_addr, res_smp);
#endif
}
/*******************************************************************************
**
** Function BTM_BlePasskeyReply
**
** Description This function is called after Security Manager submitted
** passkey request to the application.
**
** Parameters: bd_addr - Address of the device for which passkey was requested
** res - result of the operation BTM_SUCCESS if success
** key_len - length in bytes of the Passkey
** p_passkey - pointer to array with the passkey
** trusted_mask - bitwise OR of trusted services (array of UINT32)
**
*******************************************************************************/
void BTM_BlePasskeyReply (BD_ADDR bd_addr, UINT8 res, UINT32 passkey)
{
#if SMP_INCLUDED == TRUE
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_PASSKEY_ENTRY_FAIL;
if (p_dev_rec == NULL) {
BTM_TRACE_ERROR("Passkey reply to Unknown device");
return;
}
p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
BTM_TRACE_DEBUG ("BTM_BlePasskeyReply");
SMP_PasskeyReply(bd_addr, res_smp, passkey);
#endif
}
/*******************************************************************************
**
** Function BTM_BleSetStaticPasskey
**
** Description This function is called to set static passkey
**
**
** Parameters: add - set static passkey when add is TRUE
** clear static passkey when add is FALSE
** passkey - static passkey
**
**
*******************************************************************************/
void BTM_BleSetStaticPasskey(BOOLEAN add, UINT32 passkey)
{
#if SMP_INCLUDED == TRUE
SMP_SetStaticPasskey(add, passkey);
#endif
}
/*******************************************************************************
**
** Function BTM_BleConfirmReply
**
** Description This function is called after Security Manager submitted
** numeric comparison request to the application.
**
** Parameters: bd_addr - Address of the device with which numeric
** comparison was requested
** res - comparison result BTM_SUCCESS if success
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
void BTM_BleConfirmReply (BD_ADDR bd_addr, UINT8 res)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_PASSKEY_ENTRY_FAIL;
if (p_dev_rec == NULL) {
BTM_TRACE_ERROR("Passkey reply to Unknown device");
return;
}
p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
BTM_TRACE_DEBUG ("%s\n", __func__);
SMP_ConfirmReply(bd_addr, res_smp);
}
#endif ///SMP_INCLUDED == TRUE
/*******************************************************************************
**
** Function BTM_BleOobDataReply
**
** Description This function is called to provide the OOB data for
** SMP in response to BTM_LE_OOB_REQ_EVT
**
** Parameters: bd_addr - Address of the peer device
** res - result of the operation SMP_SUCCESS if success
** p_data - simple pairing Randomizer C.
**
*******************************************************************************/
void BTM_BleOobDataReply(BD_ADDR bd_addr, UINT8 res, UINT8 len, UINT8 *p_data)
{
#if SMP_INCLUDED == TRUE
tSMP_STATUS res_smp = (res == BTM_SUCCESS) ? SMP_SUCCESS : SMP_OOB_FAIL;
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
BTM_TRACE_DEBUG ("BTM_BleOobDataReply");
if (p_dev_rec == NULL) {
BTM_TRACE_ERROR("BTM_BleOobDataReply() to Unknown device");
return;
}
p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
SMP_OobDataReply(bd_addr, res_smp, len, p_data);
#endif
}
/******************************************************************************
**
** Function BTM_BleSetConnScanParams
**
** Description Set scan parameter used in BLE connection request
**
** Parameters: scan_interval: scan interval
** scan_window: scan window
**
** Returns void
**
*******************************************************************************/
void BTM_BleSetConnScanParams (UINT32 scan_interval, UINT32 scan_window)
{
#if SMP_INCLUDED == TRUE
tBTM_BLE_CB *p_ble_cb = &btm_cb.ble_ctr_cb;
BOOLEAN new_param = FALSE;
if (BTM_BLE_ISVALID_PARAM(scan_interval, BTM_BLE_SCAN_INT_MIN, BTM_BLE_SCAN_INT_MAX) &&
BTM_BLE_ISVALID_PARAM(scan_window, BTM_BLE_SCAN_WIN_MIN, BTM_BLE_SCAN_WIN_MAX)) {
if (p_ble_cb->scan_int != scan_interval) {
p_ble_cb->scan_int = scan_interval;
new_param = TRUE;
}
if (p_ble_cb->scan_win != scan_window) {
p_ble_cb->scan_win = scan_window;
new_param = TRUE;
}
if (new_param && p_ble_cb->conn_state == BLE_BG_CONN) {
btm_ble_suspend_bg_conn();
}
} else {
BTM_TRACE_ERROR("Illegal Connection Scan Parameters");
}
#endif
}
/********************************************************
**
** Function BTM_BleSetPrefConnParams
**
** Description Set a peripheral's preferred connection parameters
**
** Parameters: bd_addr - BD address of the peripheral
** scan_interval: scan interval
** scan_window: scan window
** min_conn_int - minimum preferred connection interval
** max_conn_int - maximum preferred connection interval
** slave_latency - preferred slave latency
** supervision_tout - preferred supervision timeout
**
** Returns void
**
*******************************************************************************/
void BTM_BleSetPrefConnParams (BD_ADDR bd_addr,
UINT16 min_conn_int, UINT16 max_conn_int,
UINT16 slave_latency, UINT16 supervision_tout)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_or_alloc_dev (bd_addr);
BTM_TRACE_API ("BTM_BleSetPrefConnParams min: %u max: %u latency: %u \
tout: %u",
min_conn_int, max_conn_int, slave_latency, supervision_tout);
if (BTM_BLE_ISVALID_PARAM(min_conn_int, BTM_BLE_CONN_INT_MIN, BTM_BLE_CONN_INT_MAX) &&
BTM_BLE_ISVALID_PARAM(max_conn_int, BTM_BLE_CONN_INT_MIN, BTM_BLE_CONN_INT_MAX) &&
BTM_BLE_ISVALID_PARAM(supervision_tout, BTM_BLE_CONN_SUP_TOUT_MIN, BTM_BLE_CONN_SUP_TOUT_MAX) &&
(slave_latency <= BTM_BLE_CONN_LATENCY_MAX || slave_latency == BTM_BLE_CONN_PARAM_UNDEF)) {
if (p_dev_rec) {
/* expect conn int and stout and slave latency to be updated all together */
if (min_conn_int != BTM_BLE_CONN_PARAM_UNDEF || max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) {
if (min_conn_int != BTM_BLE_CONN_PARAM_UNDEF) {
p_dev_rec->conn_params.min_conn_int = min_conn_int;
} else {
p_dev_rec->conn_params.min_conn_int = max_conn_int;
}
if (max_conn_int != BTM_BLE_CONN_PARAM_UNDEF) {
p_dev_rec->conn_params.max_conn_int = max_conn_int;
} else {
p_dev_rec->conn_params.max_conn_int = min_conn_int;
}
if (slave_latency != BTM_BLE_CONN_PARAM_UNDEF) {
p_dev_rec->conn_params.slave_latency = slave_latency;
} else {
p_dev_rec->conn_params.slave_latency = BTM_BLE_CONN_SLAVE_LATENCY_DEF;
}
if (supervision_tout != BTM_BLE_CONN_PARAM_UNDEF) {
p_dev_rec->conn_params.supervision_tout = supervision_tout;
} else {
p_dev_rec->conn_params.supervision_tout = BTM_BLE_CONN_TIMEOUT_DEF;
}
}
} else {
BTM_TRACE_ERROR("Unknown Device, setting rejected");
}
} else {
BTM_TRACE_ERROR("Illegal Connection Parameters");
}
}
/*******************************************************************************
**
** Function BTM_ReadDevInfo
**
** Description This function is called to read the device/address type
** of BD address.
**
** Parameter remote_bda: remote device address
** p_dev_type: output parameter to read the device type.
** p_addr_type: output parameter to read the address type.
**
*******************************************************************************/
void BTM_ReadDevInfo (BD_ADDR remote_bda, tBT_DEVICE_TYPE *p_dev_type, tBLE_ADDR_TYPE *p_addr_type)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (remote_bda);
tBTM_INQ_INFO *p_inq_info = BTM_InqDbRead(remote_bda);
tBLE_ADDR_TYPE temp_addr_type = (*p_addr_type);
*p_addr_type = BLE_ADDR_PUBLIC;
if (!p_dev_rec) {
*p_dev_type = BT_DEVICE_TYPE_BREDR;
/* Check with the BT manager if details about remote device are known */
if (p_inq_info != NULL) {
*p_dev_type = p_inq_info->results.device_type ;
*p_addr_type = p_inq_info->results.ble_addr_type;
} else {
if(temp_addr_type <= BLE_ADDR_TYPE_MAX) {
*p_addr_type = temp_addr_type;
} else {
/* unknown device, assume BR/EDR */
BTM_TRACE_DEBUG ("btm_find_dev_type - unknown device, BR/EDR assumed");
}
}
} else { /* there is a security device record exisitng */
/* new inquiry result, overwrite device type in security device record */
if (p_inq_info) {
p_dev_rec->device_type = p_inq_info->results.device_type;
p_dev_rec->ble.ble_addr_type = p_inq_info->results.ble_addr_type;
}
if (memcmp(p_dev_rec->bd_addr, remote_bda, BD_ADDR_LEN) == 0 &&
memcmp(p_dev_rec->ble.pseudo_addr, remote_bda, BD_ADDR_LEN) == 0) {
*p_dev_type = p_dev_rec->device_type;
*p_addr_type = p_dev_rec->ble.ble_addr_type;
} else if (memcmp(p_dev_rec->ble.pseudo_addr, remote_bda, BD_ADDR_LEN) == 0) {
*p_dev_type = BT_DEVICE_TYPE_BLE;
*p_addr_type = p_dev_rec->ble.ble_addr_type;
} else { /* matching static adddress only */
*p_dev_type = BT_DEVICE_TYPE_BREDR;
*p_addr_type = BLE_ADDR_PUBLIC;
}
}
BTM_TRACE_DEBUG ("btm_find_dev_type - device_type = %d addr_type = %d", *p_dev_type , *p_addr_type);
}
#endif ///BLE_INCLUDED == TRUE
/*******************************************************************************
**
** Function BTM_ReadConnectedTransportAddress
**
** Description This function is called to read the paired device/address type of other device paired
** corresponding to the BD_address
**
** Parameter remote_bda: remote device address, carry out the transport address
** transport: active transport
**
** Return TRUE if an active link is identified; FALSE otherwise
**
*******************************************************************************/
BOOLEAN BTM_ReadConnectedTransportAddress(BD_ADDR remote_bda, tBT_TRANSPORT transport)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev(remote_bda);
/* if no device can be located, return */
if (p_dev_rec == NULL) {
memset(remote_bda, 0, BD_ADDR_LEN);
return FALSE;
}
if (transport == BT_TRANSPORT_BR_EDR) {
if (btm_bda_to_acl(p_dev_rec->bd_addr, transport) != NULL) {
memcpy(remote_bda, p_dev_rec->bd_addr, BD_ADDR_LEN);
return TRUE;
} else if (p_dev_rec->device_type & BT_DEVICE_TYPE_BREDR) {
memcpy(remote_bda, p_dev_rec->bd_addr, BD_ADDR_LEN);
} else {
memset(remote_bda, 0, BD_ADDR_LEN);
}
return FALSE;
}
#if (BLE_INCLUDED == TRUE)
if (transport == BT_TRANSPORT_LE) {
memcpy(remote_bda, p_dev_rec->ble.pseudo_addr, BD_ADDR_LEN);
if (btm_bda_to_acl(p_dev_rec->ble.pseudo_addr, transport) != NULL) {
return TRUE;
} else {
return FALSE;
}
}
#endif ///BLE_INCLUDED == TRUE
return FALSE;
}
#if (BLE_INCLUDED == TRUE)
/*******************************************************************************
**
** Function BTM_BleReceiverTest
**
** Description This function is called to start the LE Receiver test
**
** Parameter rx_freq - Frequency Range
** p_cmd_cmpl_cback - Command Complete callback
**
*******************************************************************************/
void BTM_BleReceiverTest(UINT8 rx_freq, tBTM_CMPL_CB *p_cmd_cmpl_cback)
{
btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback;
if (btsnd_hcic_ble_receiver_test(rx_freq) == FALSE) {
BTM_TRACE_ERROR("%s: Unable to Trigger LE receiver test", __FUNCTION__);
}
}
/*******************************************************************************
**
** Function BTM_BleTransmitterTest
**
** Description This function is called to start the LE Transmitter test
**
** Parameter tx_freq - Frequency Range
** test_data_len - Length in bytes of payload data in each packet
** packet_payload - Pattern to use in the payload
** p_cmd_cmpl_cback - Command Complete callback
**
*******************************************************************************/
void BTM_BleTransmitterTest(UINT8 tx_freq, UINT8 test_data_len,
UINT8 packet_payload, tBTM_CMPL_CB *p_cmd_cmpl_cback)
{
btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback;
if (btsnd_hcic_ble_transmitter_test(tx_freq, test_data_len, packet_payload) == FALSE) {
BTM_TRACE_ERROR("%s: Unable to Trigger LE transmitter test", __FUNCTION__);
}
}
/*******************************************************************************
**
** Function BTM_BleTestEnd
**
** Description This function is called to stop the in-progress TX or RX test
**
** Parameter p_cmd_cmpl_cback - Command complete callback
**
*******************************************************************************/
void BTM_BleTestEnd(tBTM_CMPL_CB *p_cmd_cmpl_cback)
{
btm_cb.devcb.p_le_test_cmd_cmpl_cb = p_cmd_cmpl_cback;
if (btsnd_hcic_ble_test_end() == FALSE) {
BTM_TRACE_ERROR("%s: Unable to End the LE TX/RX test", __FUNCTION__);
}
}
/*******************************************************************************
** Internal Functions
*******************************************************************************/
void btm_ble_test_command_complete(UINT8 *p)
{
tBTM_CMPL_CB *p_cb = btm_cb.devcb.p_le_test_cmd_cmpl_cb;
btm_cb.devcb.p_le_test_cmd_cmpl_cb = NULL;
if (p_cb) {
(*p_cb)(p);
}
}
/*******************************************************************************
**
** Function BTM_UseLeLink
**
** Description This function is to select the underneath physical link to use.
**
** Returns TRUE to use LE, FALSE use BR/EDR.
**
*******************************************************************************/
BOOLEAN BTM_UseLeLink (BD_ADDR bd_addr)
{
tACL_CONN *p;
tBT_DEVICE_TYPE dev_type;
tBLE_ADDR_TYPE addr_type = 0;
BOOLEAN use_le = FALSE;
if ((p = btm_bda_to_acl(bd_addr, BT_TRANSPORT_BR_EDR)) != NULL) {
return use_le;
} else if ((p = btm_bda_to_acl(bd_addr, BT_TRANSPORT_LE)) != NULL) {
use_le = TRUE;
} else {
BTM_ReadDevInfo(bd_addr, &dev_type, &addr_type);
use_le = (dev_type == BT_DEVICE_TYPE_BLE);
}
return use_le;
}
/*******************************************************************************
**
** Function BTM_SetBleDataLength
**
** Description This function is to set maximum BLE transmission packet size
**
** Returns BTM_SUCCESS if success; otherwise failed.
**
*******************************************************************************/
tBTM_STATUS BTM_SetBleDataLength(BD_ADDR bd_addr, UINT16 tx_pdu_length)
{
tACL_CONN *p_acl = btm_bda_to_acl(bd_addr, BT_TRANSPORT_LE);
BTM_TRACE_DEBUG("%s: tx_pdu_length =%d", __FUNCTION__, tx_pdu_length);
if (!controller_get_interface()->supports_ble_packet_extension()) {
BTM_TRACE_ERROR("%s failed, request not supported", __FUNCTION__);
return BTM_CONTROL_LE_DATA_LEN_UNSUPPORTED;
}
if (!HCI_LE_DATA_LEN_EXT_SUPPORTED(p_acl->peer_le_features)) {
BTM_TRACE_ERROR("%s failed, peer does not support request", __FUNCTION__);
return BTM_PEER_LE_DATA_LEN_UNSUPPORTED;
}
if (p_acl != NULL) {
if (tx_pdu_length > BTM_BLE_DATA_SIZE_MAX) {
tx_pdu_length = BTM_BLE_DATA_SIZE_MAX;
} else if (tx_pdu_length < BTM_BLE_DATA_SIZE_MIN) {
tx_pdu_length = BTM_BLE_DATA_SIZE_MIN;
}
/* always set the TxTime to be max, as controller does not care for now */
btsnd_hcic_ble_set_data_length(p_acl->hci_handle, tx_pdu_length,
BTM_BLE_DATA_TX_TIME_MAX);
return BTM_SUCCESS;
} else {
BTM_TRACE_ERROR("%s: Wrong mode: no LE link exist or LE not supported", __FUNCTION__);
return BTM_WRONG_MODE;
}
}
#if (SMP_INCLUDED == TRUE)
/*******************************************************************************
**
** Function btm_ble_determine_security_act
**
** Description This function checks the security of current LE link
** and returns the appropriate action that needs to be
** taken to achieve the required security.
**
** Parameter is_originator - True if outgoing connection
** bdaddr: remote device address
** security_required: Security required for the service.
**
** Returns The appropriate security action required.
**
*******************************************************************************/
tBTM_SEC_ACTION btm_ble_determine_security_act(BOOLEAN is_originator, BD_ADDR bdaddr, UINT16 security_required)
{
tBTM_LE_AUTH_REQ auth_req = 0x00;
if (is_originator)
{
if ((security_required & BTM_SEC_OUT_FLAGS) == 0 &&
(security_required & BTM_SEC_OUT_MITM) == 0)
{
BTM_TRACE_DEBUG ("%s No security required for outgoing connection", __func__);
return BTM_SEC_OK;
}
if (security_required & BTM_SEC_OUT_MITM) {
auth_req |= BTM_LE_AUTH_REQ_MITM;
}
}
else
{
if ((security_required & BTM_SEC_IN_FLAGS) == 0&& (security_required & BTM_SEC_IN_MITM) == 0)
{
BTM_TRACE_DEBUG ("%s No security required for incoming connection", __func__);
return BTM_SEC_OK;
}
if (security_required & BTM_SEC_IN_MITM) {
auth_req |= BTM_LE_AUTH_REQ_MITM;
}
}
tBTM_BLE_SEC_REQ_ACT ble_sec_act = BTM_BLE_SEC_REQ_ACT_NONE;
btm_ble_link_sec_check(bdaddr, auth_req, &ble_sec_act);
BTM_TRACE_DEBUG ("%s ble_sec_act %d", __func__ , ble_sec_act);
if (ble_sec_act == BTM_BLE_SEC_REQ_ACT_DISCARD) {
return BTM_SEC_ENC_PENDING;
}
if (ble_sec_act == BTM_BLE_SEC_REQ_ACT_NONE) {
return BTM_SEC_OK;
}
UINT8 sec_flag = 0;
BTM_GetSecurityFlagsByTransport(bdaddr, &sec_flag, BT_TRANSPORT_LE);
BOOLEAN is_link_encrypted = FALSE;
BOOLEAN is_key_mitm = FALSE;
if (sec_flag & (BTM_SEC_FLAG_ENCRYPTED| BTM_SEC_FLAG_LKEY_KNOWN))
{
if (sec_flag & BTM_SEC_FLAG_ENCRYPTED) {
is_link_encrypted = TRUE;
}
if (sec_flag & BTM_SEC_FLAG_LKEY_AUTHED) {
is_key_mitm = TRUE;
}
}
if (auth_req & BTM_LE_AUTH_REQ_MITM)
{
if (!is_key_mitm)
{
return BTM_SEC_ENCRYPT_MITM;
} else {
if (is_link_encrypted) {
return BTM_SEC_OK;
} else {
return BTM_SEC_ENCRYPT;
}
}
} else {
if (is_link_encrypted) {
return BTM_SEC_OK;
} else {
return BTM_SEC_ENCRYPT_NO_MITM;
}
}
return BTM_SEC_OK;
}
/*******************************************************************************
**
** Function btm_ble_start_sec_check
**
** Description This function is to check and set the security required for
** LE link for LE COC.
**
** Parameter bdaddr: remote device address.
** psm : PSM of the LE COC sevice.
** is_originator: TRUE if outgoing connection.
** p_callback : Pointer to the callback function.
** p_ref_data : Pointer to be returned along with the callback.
**
** Returns TRUE if link already meets the required security; otherwise FALSE.
**
*******************************************************************************/
BOOLEAN btm_ble_start_sec_check(BD_ADDR bd_addr, UINT16 psm, BOOLEAN is_originator,
tBTM_SEC_CALLBACK *p_callback, void *p_ref_data)
{
/* Find the service record for the PSM */
tBTM_SEC_SERV_REC *p_serv_rec = btm_sec_find_first_serv (is_originator, psm);
/* If there is no application registered with this PSM do not allow connection */
if (!p_serv_rec)
{
BTM_TRACE_WARNING ("%s PSM: %d no application registerd", __func__, psm);
(*p_callback) (bd_addr, BT_TRANSPORT_LE, p_ref_data, BTM_MODE_UNSUPPORTED);
return FALSE;
}
tBTM_SEC_ACTION sec_act = btm_ble_determine_security_act(is_originator,
bd_addr, p_serv_rec->security_flags);
tBTM_BLE_SEC_ACT ble_sec_act = BTM_BLE_SEC_NONE;
BOOLEAN status = FALSE;
switch (sec_act)
{
case BTM_SEC_OK:
BTM_TRACE_DEBUG ("%s Security met", __func__);
p_callback(bd_addr, BT_TRANSPORT_LE, p_ref_data, BTM_SUCCESS);
status = TRUE;
break;
case BTM_SEC_ENCRYPT:
BTM_TRACE_DEBUG ("%s Encryption needs to be done", __func__);
ble_sec_act = BTM_BLE_SEC_ENCRYPT;
break;
case BTM_SEC_ENCRYPT_MITM:
BTM_TRACE_DEBUG ("%s Pairing with MITM needs to be done", __func__);
ble_sec_act = BTM_BLE_SEC_ENCRYPT_MITM;
break;
case BTM_SEC_ENCRYPT_NO_MITM:
BTM_TRACE_DEBUG ("%s Pairing with No MITM needs to be done", __func__);
ble_sec_act = BTM_BLE_SEC_ENCRYPT_NO_MITM;
break;
case BTM_SEC_ENC_PENDING:
BTM_TRACE_DEBUG ("%s Ecryption pending", __func__);
break;
}
if (ble_sec_act == BTM_BLE_SEC_NONE) {
return status;
}
tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr(bd_addr, BT_TRANSPORT_LE);
p_lcb->sec_act = sec_act;
BTM_SetEncryption(bd_addr, BT_TRANSPORT_LE, p_callback, p_ref_data);
return FALSE;
}
/*******************************************************************************
**
** Function btm_ble_rand_enc_complete
**
** Description This function is the callback functions for HCI_Rand command
** and HCI_Encrypt command is completed.
** This message is received from the HCI.
**
** Returns void
**
*******************************************************************************/
void btm_ble_rand_enc_complete (UINT8 *p, UINT16 op_code, tBTM_RAND_ENC_CB *p_enc_cplt_cback)
{
tBTM_RAND_ENC params;
UINT8 *p_dest = params.param_buf;
BTM_TRACE_DEBUG ("btm_ble_rand_enc_complete");
memset(&params, 0, sizeof(tBTM_RAND_ENC));
/* If there was a callback address for vcs complete, call it */
if (p_enc_cplt_cback && p) {
/* Pass paramters to the callback function */
STREAM_TO_UINT8(params.status, p); /* command status */
if (params.status == HCI_SUCCESS) {
params.opcode = op_code;
if (op_code == HCI_BLE_RAND) {
params.param_len = BT_OCTET8_LEN;
} else {
params.param_len = BT_OCTET16_LEN;
}
memcpy(p_dest, p, params.param_len); /* Fetch return info from HCI event message */
}
if (p_enc_cplt_cback) {
(*p_enc_cplt_cback)(&params); /* Call the Encryption complete callback function */
}
}
}
#endif ///SMP_INCLUDED == TRUE
/*******************************************************************************
**
** Function btm_ble_get_enc_key_type
**
** Description This function is to increment local sign counter
** Returns None
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
void btm_ble_increment_sign_ctr(BD_ADDR bd_addr, BOOLEAN is_local )
{
tBTM_SEC_DEV_REC *p_dev_rec;
BTM_TRACE_DEBUG ("btm_ble_increment_sign_ctr is_local=%d", is_local);
if ((p_dev_rec = btm_find_dev (bd_addr)) != NULL) {
if (is_local) {
p_dev_rec->ble.keys.local_counter++;
} else {
p_dev_rec->ble.keys.counter++;
}
BTM_TRACE_DEBUG ("is_local=%d local sign counter=%d peer sign counter=%d",
is_local,
p_dev_rec->ble.keys.local_counter,
p_dev_rec->ble.keys.counter);
}
}
#endif ///SMP_INCLUDED == TRUE
#endif ///BLE_INCLUDED == TRUE
/*******************************************************************************
**
** Function btm_ble_get_enc_key_type
**
** Description This function is to get the BLE key type that has been exchanged
** in betweem local device and peer device.
**
** Returns p_key_type: output parameter to carry the key type value.
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
#if (BLE_INCLUDED == TRUE)
BOOLEAN btm_ble_get_enc_key_type(BD_ADDR bd_addr, UINT8 *p_key_types)
{
tBTM_SEC_DEV_REC *p_dev_rec;
BTM_TRACE_DEBUG ("btm_ble_get_enc_key_type");
if ((p_dev_rec = btm_find_dev (bd_addr)) != NULL) {
*p_key_types = p_dev_rec->ble.key_type;
return TRUE;
}
return FALSE;
}
/*******************************************************************************
**
** Function btm_get_local_div
**
** Description This function is called to read the local DIV
**
** Returns TRUE - if a valid DIV is availavle
*******************************************************************************/
BOOLEAN btm_get_local_div (BD_ADDR bd_addr, UINT16 *p_div)
{
tBTM_SEC_DEV_REC *p_dev_rec;
BOOLEAN status = FALSE;
BTM_TRACE_DEBUG ("btm_get_local_div");
BTM_TRACE_DEBUG("bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
bd_addr[0], bd_addr[1],
bd_addr[2], bd_addr[3],
bd_addr[4], bd_addr[5]);
*p_div = 0;
p_dev_rec = btm_find_dev (bd_addr);
if (p_dev_rec && p_dev_rec->ble.keys.div) {
status = TRUE;
*p_div = p_dev_rec->ble.keys.div;
}
BTM_TRACE_DEBUG ("btm_get_local_div status=%d (1-OK) DIV=0x%x", status, *p_div);
return status;
}
/*******************************************************************************
**
** Function btm_sec_save_le_key
**
** Description This function is called by the SMP to update
** an BLE key. SMP is internal, whereas all the keys shall
** be sent to the application. The function is also called
** when application passes ble key stored in NVRAM to the btm_sec.
** pass_to_application parameter is false in this case.
**
** Returns void
**
*******************************************************************************/
void 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)
{
tBTM_SEC_DEV_REC *p_rec;
tBTM_LE_EVT_DATA cb_data;
UINT8 i;
BTM_TRACE_DEBUG ("btm_sec_save_le_key key_type=0x%x pass_to_application=%d", key_type, pass_to_application);
/* Store the updated key in the device database */
BTM_TRACE_DEBUG("bd_addr:%02x-%02x-%02x-%02x-%02x-%02x",
bd_addr[0], bd_addr[1],
bd_addr[2], bd_addr[3],
bd_addr[4], bd_addr[5]);
if ((p_rec = btm_find_dev (bd_addr)) != NULL && (p_keys || key_type == BTM_LE_KEY_LID)) {
btm_ble_init_pseudo_addr (p_rec, bd_addr);
switch (key_type) {
case BTM_LE_KEY_PENC:
memcpy(p_rec->ble.keys.pltk, p_keys->penc_key.ltk, BT_OCTET16_LEN);
memcpy(p_rec->ble.keys.rand, p_keys->penc_key.rand, BT_OCTET8_LEN);
p_rec->ble.keys.sec_level = p_keys->penc_key.sec_level;
p_rec->ble.keys.ediv = p_keys->penc_key.ediv;
p_rec->ble.keys.key_size = p_keys->penc_key.key_size;
p_rec->ble.key_type |= BTM_LE_KEY_PENC;
p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_KNOWN;
if (p_keys->penc_key.sec_level == SMP_SEC_AUTHENTICATED) {
p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED;
} else {
p_rec->sec_flags &= ~BTM_SEC_LE_LINK_KEY_AUTHED;
}
BTM_TRACE_DEBUG("BTM_LE_KEY_PENC key_type=0x%x sec_flags=0x%x sec_leve=0x%x",
p_rec->ble.key_type,
p_rec->sec_flags,
p_rec->ble.keys.sec_level);
break;
case BTM_LE_KEY_PID:
for (i = 0; i < BT_OCTET16_LEN; i++) {
p_rec->ble.keys.irk[i] = p_keys->pid_key.irk[i];
}
//memcpy( p_rec->ble.keys.irk, p_keys->pid_key, BT_OCTET16_LEN); todo will crash the system
memcpy(p_rec->ble.static_addr, p_keys->pid_key.static_addr, BD_ADDR_LEN);
p_rec->ble.static_addr_type = p_keys->pid_key.addr_type;
p_rec->ble.key_type |= BTM_LE_KEY_PID;
BTM_TRACE_DEBUG("BTM_LE_KEY_PID key_type=0x%x save peer IRK", p_rec->ble.key_type);
/* update device record address as static address */
memcpy(p_rec->bd_addr, p_keys->pid_key.static_addr, BD_ADDR_LEN);
/* combine DUMO device security record if needed */
btm_consolidate_dev(p_rec);
break;
case BTM_LE_KEY_PCSRK:
memcpy(p_rec->ble.keys.pcsrk, p_keys->pcsrk_key.csrk, BT_OCTET16_LEN);
p_rec->ble.keys.srk_sec_level = p_keys->pcsrk_key.sec_level;
p_rec->ble.keys.counter = p_keys->pcsrk_key.counter;
p_rec->ble.key_type |= BTM_LE_KEY_PCSRK;
p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_KNOWN;
if ( p_keys->pcsrk_key.sec_level == SMP_SEC_AUTHENTICATED) {
p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED;
} else {
p_rec->sec_flags &= ~BTM_SEC_LE_LINK_KEY_AUTHED;
}
BTM_TRACE_DEBUG("BTM_LE_KEY_PCSRK key_type=0x%x sec_flags=0x%x sec_level=0x%x peer_counter=%d",
p_rec->ble.key_type,
p_rec->sec_flags,
p_rec->ble.keys.srk_sec_level,
p_rec->ble.keys.counter );
break;
case BTM_LE_KEY_LENC:
memcpy(p_rec->ble.keys.lltk, p_keys->lenc_key.ltk, BT_OCTET16_LEN);
p_rec->ble.keys.div = p_keys->lenc_key.div; /* update DIV */
p_rec->ble.keys.sec_level = p_keys->lenc_key.sec_level;
p_rec->ble.keys.key_size = p_keys->lenc_key.key_size;
p_rec->ble.key_type |= BTM_LE_KEY_LENC;
/* Set that link key is known since this shares field with BTM_SEC_FLAG_LKEY_KNOWN flag in stack/btm_api.h*/
p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_KNOWN;
if ( p_keys->lenc_key.sec_level == SMP_SEC_AUTHENTICATED) {
p_rec->sec_flags |= BTM_SEC_LE_LINK_KEY_AUTHED;
} else {
p_rec->sec_flags &= ~BTM_SEC_LE_LINK_KEY_AUTHED;
}
BTM_TRACE_DEBUG("BTM_LE_KEY_LENC key_type=0x%x DIV=0x%x key_size=0x%x sec_level=0x%x",
p_rec->ble.key_type,
p_rec->ble.keys.div,
p_rec->ble.keys.key_size,
p_rec->ble.keys.sec_level );
break;
case BTM_LE_KEY_LCSRK:/* local CSRK has been delivered */
memcpy (p_rec->ble.keys.lcsrk, p_keys->lcsrk_key.csrk, BT_OCTET16_LEN);
p_rec->ble.keys.div = p_keys->lcsrk_key.div; /* update DIV */
p_rec->ble.keys.local_csrk_sec_level = p_keys->lcsrk_key.sec_level;
p_rec->ble.keys.local_counter = p_keys->lcsrk_key.counter;
p_rec->ble.key_type |= BTM_LE_KEY_LCSRK;
BTM_TRACE_DEBUG("BTM_LE_KEY_LCSRK key_type=0x%x DIV=0x%x scrk_sec_level=0x%x local_counter=%d",
p_rec->ble.key_type,
p_rec->ble.keys.div,
p_rec->ble.keys.local_csrk_sec_level,
p_rec->ble.keys.local_counter );
break;
case BTM_LE_KEY_LID:
p_rec->ble.key_type |= BTM_LE_KEY_LID;
break;
default:
BTM_TRACE_WARNING("btm_sec_save_le_key (Bad key_type 0x%02x)", key_type);
return;
}
BTM_TRACE_DEBUG ("BLE key type 0x%02x updated for BDA: %08x%04x (btm_sec_save_le_key)", key_type,
(bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
(bd_addr[4] << 8) + bd_addr[5]);
/* Notify the application that one of the BLE keys has been updated
If link key is in progress, it will get sent later.*/
if (pass_to_application && btm_cb.api.p_le_callback) {
cb_data.key.p_key_value = p_keys;
cb_data.key.key_type = key_type;
(*btm_cb.api.p_le_callback) (BTM_LE_KEY_EVT, bd_addr, &cb_data);
}
return;
}
BTM_TRACE_WARNING ("BLE key type 0x%02x called for Unknown BDA or type: %08x%04x !! (btm_sec_save_le_key)", key_type,
(bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
(bd_addr[4] << 8) + bd_addr[5]);
if (p_rec) {
BTM_TRACE_DEBUG ("sec_flags=0x%x", p_rec->sec_flags);
}
}
/*******************************************************************************
**
** Function btm_ble_update_sec_key_size
**
** Description update the current lin kencryption key size
**
** Returns void
**
*******************************************************************************/
void btm_ble_update_sec_key_size(BD_ADDR bd_addr, UINT8 enc_key_size)
{
tBTM_SEC_DEV_REC *p_rec;
BTM_TRACE_DEBUG("btm_ble_update_sec_key_size enc_key_size = %d", enc_key_size);
if ((p_rec = btm_find_dev (bd_addr)) != NULL ) {
p_rec->enc_key_size = enc_key_size;
}
}
/*******************************************************************************
**
** Function btm_ble_read_sec_key_size
**
** Description update the current lin kencryption key size
**
** Returns void
**
*******************************************************************************/
UINT8 btm_ble_read_sec_key_size(BD_ADDR bd_addr)
{
tBTM_SEC_DEV_REC *p_rec;
if ((p_rec = btm_find_dev (bd_addr)) != NULL ) {
return p_rec->enc_key_size;
} else {
return 0;
}
return 0;
}
/*******************************************************************************
**
** Function btm_ble_link_sec_check
**
** Description Check BLE link security level match.
**
** Returns TRUE: check is OK and the *p_sec_req_act contain the action
**
*******************************************************************************/
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)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
UINT8 req_sec_level = BTM_LE_SEC_NONE, cur_sec_level = BTM_LE_SEC_NONE;
BTM_TRACE_DEBUG ("btm_ble_link_sec_check auth_req =0x%x", auth_req);
if (p_dev_rec == NULL) {
BTM_TRACE_ERROR ("btm_ble_link_sec_check received for unknown device");
return;
}
if (p_dev_rec->sec_state == BTM_SEC_STATE_ENCRYPTING ||
p_dev_rec->sec_state == BTM_SEC_STATE_AUTHENTICATING) {
/* race condition: discard the security request while master is encrypting the link */
*p_sec_req_act = BTM_BLE_SEC_REQ_ACT_DISCARD;
} else {
req_sec_level = BTM_LE_SEC_UNAUTHENTICATE;
if (auth_req & BTM_LE_AUTH_REQ_MITM) {
req_sec_level = BTM_LE_SEC_AUTHENTICATED;
}
BTM_TRACE_DEBUG ("dev_rec sec_flags=0x%x", p_dev_rec->sec_flags);
/* currently encrpted */
if (p_dev_rec->sec_flags & BTM_SEC_LE_ENCRYPTED) {
if (p_dev_rec->sec_flags & BTM_SEC_LE_AUTHENTICATED) {
cur_sec_level = BTM_LE_SEC_AUTHENTICATED;
} else {
cur_sec_level = BTM_LE_SEC_UNAUTHENTICATE;
}
} else { /* unencrypted link */
/* if bonded, get the key security level */
if (p_dev_rec->ble.key_type & BTM_LE_KEY_PENC) {
cur_sec_level = p_dev_rec->ble.keys.sec_level;
} else {
cur_sec_level = BTM_LE_SEC_NONE;
}
}
if (cur_sec_level >= req_sec_level) {
/* To avoid re-encryption on an encrypted link for an equal condition encryption */
*p_sec_req_act = BTM_BLE_SEC_REQ_ACT_ENCRYPT;
} else {
*p_sec_req_act = BTM_BLE_SEC_REQ_ACT_PAIR; /* start the pariring process to upgrade the keys*/
}
}
BTM_TRACE_DEBUG("cur_sec_level=%d req_sec_level=%d sec_req_act=%d",
cur_sec_level,
req_sec_level,
*p_sec_req_act);
}
#endif ///BLE_INCLUDED == TRUE
#endif ///SMP_INCLUDED == TRUE
#if (BLE_INCLUDED == TRUE)
/*******************************************************************************
**
** Function btm_ble_set_encryption
**
** Description This function is called to ensure that LE connection is
** encrypted. Should be called only on an open connection.
** Typically only needed for connections that first want to
** bring up unencrypted links, then later encrypt them.
**
** Returns void
** the local device ER is copied into er
**
*******************************************************************************/
tBTM_STATUS btm_ble_set_encryption (BD_ADDR bd_addr, void *p_ref_data, UINT8 link_role)
{
tBTM_STATUS cmd = BTM_NO_RESOURCES;
#if (SMP_INCLUDED == TRUE)
tBTM_BLE_SEC_ACT sec_act = *(tBTM_BLE_SEC_ACT *)p_ref_data ;
tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr);
tBTM_BLE_SEC_REQ_ACT sec_req_act;
tBTM_LE_AUTH_REQ auth_req;
if (p_rec == NULL) {
BTM_TRACE_WARNING ("btm_ble_set_encryption (NULL device record!! sec_act=0x%x", sec_act);
return (BTM_WRONG_MODE);
}
BTM_TRACE_DEBUG ("btm_ble_set_encryption sec_act=0x%x role_master=%d", sec_act, p_rec->role_master);
if (sec_act == BTM_BLE_SEC_ENCRYPT_MITM) {
p_rec->security_required |= BTM_SEC_IN_MITM;
}
switch (sec_act) {
case BTM_BLE_SEC_ENCRYPT:
if (link_role == BTM_ROLE_MASTER && (p_rec->ble.key_type & BTM_LE_KEY_PENC)) {
/* start link layer encryption using the security info stored */
cmd = btm_ble_start_encrypt(bd_addr, FALSE, NULL);
break;
}
/* if salve role then fall through to call SMP_Pair below which will send a
sec_request to request the master to encrypt the link */
case BTM_BLE_SEC_ENCRYPT_NO_MITM:
case BTM_BLE_SEC_ENCRYPT_MITM:
if ((link_role == BTM_ROLE_MASTER) && (sec_act != BTM_BLE_SEC_ENCRYPT)) {
auth_req = (sec_act == BTM_BLE_SEC_ENCRYPT_NO_MITM)
? SMP_AUTH_GEN_BOND : (SMP_AUTH_GEN_BOND | SMP_AUTH_YN_BIT);
btm_ble_link_sec_check (bd_addr, auth_req, &sec_req_act);
if (sec_req_act == BTM_BLE_SEC_REQ_ACT_ENCRYPT) {
cmd = btm_ble_start_encrypt(bd_addr, FALSE, NULL);
break;
}
}
#if (SMP_SLAVE_CON_PARAMS_UPD_ENABLE == TRUE)
// already have encrypted information, do not need to update connection parameters
if(link_role == BTM_ROLE_SLAVE && (p_rec->ble.key_type & BTM_LE_KEY_PENC)) {
p_rec->ble.skip_update_conn_param = true;
} else {
p_rec->ble.skip_update_conn_param = false;
}
#endif
if (SMP_Pair(bd_addr) == SMP_STARTED) {
cmd = BTM_CMD_STARTED;
p_rec->sec_state = BTM_SEC_STATE_AUTHENTICATING;
}
break;
default:
cmd = BTM_WRONG_MODE;
break;
}
#endif ///SMP_INCLUDED == TRUE
return cmd;
}
/*******************************************************************************
**
** Function btm_ble_ltk_request
**
** Description This function is called when encryption request is received
** on a slave device.
**
**
** Returns void
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
void btm_ble_ltk_request(UINT16 handle, UINT8 rand[8], UINT16 ediv)
{
tBTM_CB *p_cb = &btm_cb;
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev_by_handle (handle);
BT_OCTET8 dummy_stk = {0};
BTM_TRACE_DEBUG ("btm_ble_ltk_request");
p_cb->ediv = ediv;
memcpy(p_cb->enc_rand, rand, BT_OCTET8_LEN);
if (p_dev_rec != NULL) {
if (!smp_proc_ltk_request(p_dev_rec->bd_addr)) {
btm_ble_ltk_request_reply(p_dev_rec->bd_addr, FALSE, dummy_stk);
}
}
}
#endif ///SMP_INCLUDED == TRUE
/*******************************************************************************
**
** Function btm_ble_start_encrypt
**
** Description This function is called to start LE encryption.
**
**
** Returns BTM_SUCCESS if encryption was started successfully
**
*******************************************************************************/
tBTM_STATUS btm_ble_start_encrypt(BD_ADDR bda, BOOLEAN use_stk, BT_OCTET16 stk)
{
#if (SMP_INCLUDED == TRUE)
tBTM_CB *p_cb = &btm_cb;
tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bda);
BT_OCTET8 dummy_rand = {0};
#endif ///SMP_INCLUDED == TRUE
tBTM_STATUS rt = BTM_NO_RESOURCES;
#if (SMP_INCLUDED == TRUE)
BTM_TRACE_DEBUG ("btm_ble_start_encrypt");
if (!p_rec ) {
BTM_TRACE_ERROR("Link is not active, can not encrypt!");
return BTM_WRONG_MODE;
}
if (p_rec->sec_state == BTM_SEC_STATE_ENCRYPTING) {
BTM_TRACE_WARNING("Link Encryption is active, Busy!");
return BTM_BUSY;
}
p_cb->enc_handle = p_rec->ble_hci_handle;
if (use_stk) {
if (btsnd_hcic_ble_start_enc(p_rec->ble_hci_handle, dummy_rand, 0, stk)) {
rt = BTM_CMD_STARTED;
}
} else if (p_rec->ble.key_type & BTM_LE_KEY_PENC) {
if (btsnd_hcic_ble_start_enc(p_rec->ble_hci_handle, p_rec->ble.keys.rand,
p_rec->ble.keys.ediv, p_rec->ble.keys.pltk)) {
rt = BTM_CMD_STARTED;
}
} else {
BTM_TRACE_ERROR("No key available to encrypt the link");
}
if (rt == BTM_CMD_STARTED) {
if (p_rec->sec_state == BTM_SEC_STATE_IDLE) {
p_rec->sec_state = BTM_SEC_STATE_ENCRYPTING;
}
}
#endif ///SMP_INCLUDED == TRUE
return rt;
}
/*******************************************************************************
**
** Function btm_ble_link_encrypted
**
** Description This function is called when LE link encrption status is changed.
**
** Returns void
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
void btm_ble_link_encrypted(BD_ADDR bd_addr, UINT8 encr_enable)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
BOOLEAN enc_cback;
if (!p_dev_rec) {
BTM_TRACE_WARNING ("btm_ble_link_encrypted (No Device Found!) encr_enable=%d", encr_enable);
return;
}
BTM_TRACE_DEBUG ("btm_ble_link_encrypted encr_enable=%d", encr_enable);
enc_cback = (p_dev_rec->sec_state == BTM_SEC_STATE_ENCRYPTING);
smp_link_encrypted(bd_addr, encr_enable);
BTM_TRACE_DEBUG(" p_dev_rec->sec_flags=0x%x", p_dev_rec->sec_flags);
if (encr_enable && p_dev_rec->enc_key_size == 0) {
p_dev_rec->enc_key_size = p_dev_rec->ble.keys.key_size;
}
p_dev_rec->sec_state = BTM_SEC_STATE_IDLE;
if (p_dev_rec->p_callback && enc_cback) {
if (encr_enable) {
btm_sec_dev_rec_cback_event(p_dev_rec, BTM_SUCCESS, TRUE);
} else if (p_dev_rec->role_master) {
btm_sec_dev_rec_cback_event(p_dev_rec, BTM_ERR_PROCESSING, TRUE);
}
}
/* to notify GATT to send data if any request is pending */
gatt_notify_enc_cmpl(p_dev_rec->ble.pseudo_addr);
}
#endif ///SMP_INCLUDED == TRUE
/*******************************************************************************
**
** Function btm_ble_ltk_request_reply
**
** Description This function is called to send a LTK request reply on a slave
** device.
**
** Returns void
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
void btm_ble_ltk_request_reply(BD_ADDR bda, BOOLEAN use_stk, BT_OCTET16 stk)
{
tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bda);
tBTM_CB *p_cb = &btm_cb;
if (p_rec == NULL) {
BTM_TRACE_ERROR("btm_ble_ltk_request_reply received for unknown device");
return;
}
BTM_TRACE_DEBUG ("btm_ble_ltk_request_reply");
p_cb->enc_handle = p_rec->ble_hci_handle;
p_cb->key_size = p_rec->ble.keys.key_size;
BTM_TRACE_DEBUG("key size = %d", p_rec->ble.keys.key_size);
if (use_stk) {
btsnd_hcic_ble_ltk_req_reply(btm_cb.enc_handle, stk);
} else { /* calculate LTK using peer device */
if (p_rec->ble.key_type & BTM_LE_KEY_LENC) {
btsnd_hcic_ble_ltk_req_reply(btm_cb.enc_handle, p_rec->ble.keys.lltk);
} else {
btsnd_hcic_ble_ltk_req_neg_reply(btm_cb.enc_handle);
}
}
}
/*******************************************************************************
**
** Function btm_ble_io_capabilities_req
**
** Description This function is called to handle SMP get IO capability request.
**
** Returns void
**
*******************************************************************************/
UINT8 btm_ble_io_capabilities_req(tBTM_SEC_DEV_REC *p_dev_rec, tBTM_LE_IO_REQ *p_data)
{
UINT8 callback_rc = BTM_SUCCESS;
BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req");
if (btm_cb.api.p_le_callback) {
/* the callback function implementation may change the IO capability... */
callback_rc = (*btm_cb.api.p_le_callback) (BTM_LE_IO_REQ_EVT, p_dev_rec->bd_addr, (tBTM_LE_EVT_DATA *)p_data);
}
#if BTM_OOB_INCLUDED == TRUE
if ((callback_rc == BTM_SUCCESS) || (BTM_OOB_UNKNOWN != p_data->oob_data))
#else
if (callback_rc == BTM_SUCCESS)
#endif
{
#if BTM_BLE_CONFORMANCE_TESTING == TRUE
if (btm_cb.devcb.keep_rfu_in_auth_req) {
BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req keep_rfu_in_auth_req = %u",
btm_cb.devcb.keep_rfu_in_auth_req);
p_data->auth_req &= BTM_LE_AUTH_REQ_MASK_KEEP_RFU;
btm_cb.devcb.keep_rfu_in_auth_req = FALSE;
} else {
/* default */
p_data->auth_req &= BTM_LE_AUTH_REQ_MASK;
}
#else
p_data->auth_req &= BTM_LE_AUTH_REQ_MASK;
#endif
BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 1: p_dev_rec->security_required = %d auth_req:%d",
p_dev_rec->security_required, p_data->auth_req);
BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 2: i_keys=0x%x r_keys=0x%x (bit 0-LTK 1-IRK 2-CSRK)",
p_data->init_keys,
p_data->resp_keys);
/* if authentication requires MITM protection, put on the mask */
if (p_dev_rec->security_required & BTM_SEC_IN_MITM) {
p_data->auth_req |= BTM_LE_AUTH_REQ_MITM;
}
if (!(p_data->auth_req & SMP_AUTH_BOND)) {
BTM_TRACE_DEBUG("Non bonding: No keys should be exchanged");
p_data->init_keys = 0;
p_data->resp_keys = 0;
}
BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 3: auth_req:%d\n", p_data->auth_req);
BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 4: i_keys=0x%x r_keys=0x%x\n",
p_data->init_keys,
p_data->resp_keys);
BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 5: p_data->io_cap = %d auth_req:%d\n",
p_data->io_cap, p_data->auth_req);
/* remove MITM protection requirement if IO cap does not allow it */
if ((p_data->io_cap == BTM_IO_CAP_NONE) && p_data->oob_data == SMP_OOB_NONE) {
p_data->auth_req &= ~BTM_LE_AUTH_REQ_MITM;
}
if (!(p_data->auth_req & SMP_SC_SUPPORT_BIT)) {
/* if Secure Connections are not supported then remove LK derivation,
** and keypress notifications.
*/
BTM_TRACE_DEBUG("%s-SC not supported -> No LK derivation, no keypress notifications",
__func__);
p_data->auth_req &= ~SMP_KP_SUPPORT_BIT;
p_data->init_keys &= ~SMP_SEC_KEY_TYPE_LK;
p_data->resp_keys &= ~SMP_SEC_KEY_TYPE_LK;
}
BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 6: IO_CAP:%d oob_data:%d auth_req:0x%02x\n",
p_data->io_cap, p_data->oob_data, p_data->auth_req);
}
return callback_rc;
}
#endif ///SMP_INCLUDED == TRUE
/*******************************************************************************
**
** Function btm_ble_br_keys_req
**
** Description This function is called to handle SMP request for keys sent
** over BR/EDR.
**
** Returns void
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
UINT8 btm_ble_br_keys_req(tBTM_SEC_DEV_REC *p_dev_rec, tBTM_LE_IO_REQ *p_data)
{
UINT8 callback_rc = BTM_SUCCESS;
BTM_TRACE_DEBUG ("%s\n", __func__);
if (btm_cb.api.p_le_callback) {
/* the callback function implementation may change the IO capability... */
callback_rc = (*btm_cb.api.p_le_callback) (BTM_LE_IO_REQ_EVT, p_dev_rec->bd_addr,
(tBTM_LE_EVT_DATA *)p_data);
}
return callback_rc;
}
#endif ///SMP_INCLUDED
#if (BLE_PRIVACY_SPT == TRUE )
/*******************************************************************************
**
** Function btm_ble_resolve_random_addr_on_conn_cmpl
**
** Description resolve random address complete on connection complete event.
**
** Returns void
**
*******************************************************************************/
static void btm_ble_resolve_random_addr_on_conn_cmpl(void *p_rec, void *p_data)
{
UINT8 *p = (UINT8 *)p_data;
tBTM_SEC_DEV_REC *match_rec = (tBTM_SEC_DEV_REC *) p_rec;
UINT8 role, bda_type;
UINT16 handle;
BD_ADDR bda, local_rpa, peer_rpa;
UINT16 conn_interval, conn_latency, conn_timeout;
BOOLEAN match = FALSE;
++p;
STREAM_TO_UINT16 (handle, p);
STREAM_TO_UINT8 (role, p);
STREAM_TO_UINT8 (bda_type, p);
STREAM_TO_BDADDR (bda, p);
// if the enhanced is true, means the connection is enhanced connect,
// so the packet should include the local Resolvable Private Address and Peer Resolvable Private Address
if(temp_enhanced) {
STREAM_TO_BDADDR(local_rpa, p);
STREAM_TO_BDADDR(peer_rpa, p);
}
STREAM_TO_UINT16 (conn_interval, p);
STREAM_TO_UINT16 (conn_latency, p);
STREAM_TO_UINT16 (conn_timeout, p);
handle = HCID_GET_HANDLE (handle);
BTM_TRACE_EVENT ("%s\n", __func__);
if (match_rec) {
BTM_TRACE_DEBUG("%s matched and resolved random address", __func__);
match = TRUE;
match_rec->ble.active_addr_type = BTM_BLE_ADDR_RRA;
memcpy(match_rec->ble.cur_rand_addr, bda, BD_ADDR_LEN);
if (!btm_ble_init_pseudo_addr (match_rec, bda)) {
/* assign the original address to be the current report address */
memcpy(bda, match_rec->ble.pseudo_addr, BD_ADDR_LEN);
} else {
memcpy(bda, match_rec->bd_addr, BD_ADDR_LEN);
}
} else {
BTM_TRACE_DEBUG("%s unable to match and resolve random address", __func__);
}
btm_ble_connected(bda, handle, HCI_ENCRYPT_MODE_DISABLED, role, bda_type, match);
l2cble_conn_comp (handle, role, bda, bda_type, conn_interval,
conn_latency, conn_timeout);
return;
}
#endif
/*******************************************************************************
**
** Function btm_ble_connected
**
** Description This function is when a LE connection to the peer device is
** establsihed
**
** Returns void
**
*******************************************************************************/
void btm_ble_connected (UINT8 *bda, UINT16 handle, UINT8 enc_mode, UINT8 role,
tBLE_ADDR_TYPE addr_type, BOOLEAN addr_matched)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bda);
tBTM_BLE_CB *p_cb = &btm_cb.ble_ctr_cb;
UNUSED(addr_matched);
BTM_TRACE_EVENT ("btm_ble_connected");
/* Commenting out trace due to obf/compilation problems.
*/
#if (BT_USE_TRACES == TRUE)
if (p_dev_rec) {
BTM_TRACE_EVENT ("Security Manager: btm_ble_connected : handle:%d enc_mode:%d bda:%x RName:%s",
handle, enc_mode,
(bda[2] << 24) + (bda[3] << 16) + (bda[4] << 8) + bda[5],
p_dev_rec->sec_bd_name);
BTM_TRACE_DEBUG ("btm_ble_connected sec_flags=0x%x", p_dev_rec->sec_flags);
} else {
BTM_TRACE_EVENT ("Security Manager: btm_ble_connected: handle:%d enc_mode:%d bda:%x ",
handle, enc_mode,
(bda[2] << 24) + (bda[3] << 16) + (bda[4] << 8) + bda[5]);
}
#endif
if (!p_dev_rec) {
/* There is no device record for new connection. Allocate one */
if ((p_dev_rec = btm_sec_alloc_dev (bda)) == NULL) {
return;
}
} else { /* Update the timestamp for this device */
p_dev_rec->timestamp = btm_cb.dev_rec_count++;
}
/* update device information */
p_dev_rec->device_type |= BT_DEVICE_TYPE_BLE;
p_dev_rec->ble_hci_handle = handle;
p_dev_rec->ble.ble_addr_type = addr_type;
/* update pseudo address */
memcpy(p_dev_rec->ble.pseudo_addr, bda, BD_ADDR_LEN);
p_dev_rec->role_master = FALSE;
if (role == HCI_ROLE_MASTER) {
p_dev_rec->role_master = TRUE;
}
#if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
if (!addr_matched) {
p_dev_rec->ble.active_addr_type = BTM_BLE_ADDR_PSEUDO;
}
if (p_dev_rec->ble.ble_addr_type == BLE_ADDR_RANDOM && !addr_matched) {
memcpy(p_dev_rec->ble.cur_rand_addr, bda, BD_ADDR_LEN);
}
#endif
p_cb->inq_var.directed_conn = BTM_BLE_CONNECT_EVT;
return;
}
/*****************************************************************************
** Function btm_ble_conn_complete
**
** Description LE connection complete.
**
******************************************************************************/
void btm_ble_conn_complete(UINT8 *p, UINT16 evt_len, BOOLEAN enhanced)
{
#if (BLE_PRIVACY_SPT == TRUE )
UINT8 *p_data = p, peer_addr_type;
#endif ///BLE_PRIVACY_SPT == TRUE
UINT8 role, status, bda_type;
UINT16 handle;
BD_ADDR bda;
BD_ADDR local_rpa, peer_rpa;
UINT16 conn_interval, conn_latency, conn_timeout;
BOOLEAN match = FALSE;
UNUSED(evt_len);
STREAM_TO_UINT8 (status, p);
STREAM_TO_UINT16 (handle, p);
STREAM_TO_UINT8 (role, p);
STREAM_TO_UINT8 (bda_type, p);
STREAM_TO_BDADDR (bda, p);
BTM_TRACE_DEBUG("status = %d, handle = %d, role = %d, bda_type = %d",status,handle,role,bda_type);
if (status == 0) {
if (enhanced) {
STREAM_TO_BDADDR (local_rpa, p);
STREAM_TO_BDADDR (peer_rpa, p);
}
#if (BLE_PRIVACY_SPT == TRUE )
peer_addr_type = bda_type;
match = btm_identity_addr_to_random_pseudo (bda, &bda_type, TRUE);
/* possiblly receive connection complete with resolvable random on
slave role while the device has been paired */
/* It will cause that scanner doesn't send scan request to advertiser
* which has sent IRK to us and we have stored the IRK in controller.
* It is a hardware limitation. The preliminary solution is not to
* send key to the controller, but to resolve the random address in host.
* so we need send the real address information to controller to connect.
* Once the connection is successful, resolve device address whether it is
* slave or master*/
/* if (!match && role == HCI_ROLE_SLAVE && BTM_BLE_IS_RESOLVE_BDA(bda)) { */
if (!match && bda_type != BLE_ADDR_PUBLIC && BTM_BLE_IS_RESOLVE_BDA(bda)) {
// save the enhanced value to used in btm_ble_resolve_random_addr_on_conn_cmpl func.
temp_enhanced = enhanced;
btm_ble_resolve_random_addr(bda, btm_ble_resolve_random_addr_on_conn_cmpl, p_data);
// set back the temp enhanced to default after used.
temp_enhanced = FALSE;
} else
#endif
{
STREAM_TO_UINT16 (conn_interval, p);
STREAM_TO_UINT16 (conn_latency, p);
STREAM_TO_UINT16 (conn_timeout, p);
handle = HCID_GET_HANDLE (handle);
btm_ble_connected(bda, handle, HCI_ENCRYPT_MODE_DISABLED, role, bda_type, match);
l2cble_conn_comp (handle, role, bda, bda_type, conn_interval,
conn_latency, conn_timeout);
#if (BLE_PRIVACY_SPT == TRUE)
if (enhanced) {
btm_ble_refresh_local_resolvable_private_addr(bda, local_rpa);
if (peer_addr_type & BLE_ADDR_TYPE_ID_BIT) {
btm_ble_refresh_peer_resolvable_private_addr(bda, peer_rpa, BLE_ADDR_RANDOM);
}
}
#endif
}
} else {
role = HCI_ROLE_UNKNOWN;
if (status != HCI_ERR_DIRECTED_ADVERTISING_TIMEOUT) {
btm_ble_set_conn_st(BLE_CONN_IDLE);
#if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
btm_ble_disable_resolving_list(BTM_BLE_RL_INIT, TRUE);
#endif
} else {
#if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
btm_cb.ble_ctr_cb.inq_var.adv_mode = BTM_BLE_ADV_DISABLE;
btm_ble_disable_resolving_list(BTM_BLE_RL_ADV, TRUE);
#endif
}
}
BOOLEAN bg_con = btm_ble_update_mode_operation(role, bda, status);
if (status != HCI_SUCCESS && !bg_con) {
// notify connection failed
l2c_link_hci_disc_comp (handle, status);
#if (SMP_INCLUDED == TRUE)
/* Notify security manager */
btm_sec_disconnected (handle, status);
#endif ///SMP_INCLUDED == TRUE
}
}
/*****************************************************************************
** Function btm_ble_create_ll_conn_complete
**
** Description LE connection complete.
**
******************************************************************************/
void btm_ble_create_ll_conn_complete (UINT8 status)
{
if (status != HCI_SUCCESS) {
btm_ble_set_conn_st(BLE_CONN_IDLE);
btm_ble_update_mode_operation(HCI_ROLE_UNKNOWN, NULL, status);
}
}
/*****************************************************************************
** Function btm_ble_create_conn_cancel_complete
**
** Description LE connection cancel complete.
**
******************************************************************************/
void btm_ble_create_conn_cancel_complete (UINT8 *p)
{
UINT8 status;
STREAM_TO_UINT8 (status, p);
switch (status) {
case HCI_SUCCESS:
if (btm_ble_get_conn_st() == BLE_CONN_CANCEL) {
btm_ble_set_conn_st (BLE_CONN_IDLE);
}
break;
default:
break;
}
}
/*****************************************************************************
** Function btm_proc_smp_cback
**
** Description This function is the SMP callback handler.
**
******************************************************************************/
#if (SMP_INCLUDED == TRUE)
UINT8 btm_proc_smp_cback(tSMP_EVT event, BD_ADDR bd_addr, tSMP_EVT_DATA *p_data)
{
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
UINT8 res = 0;
BTM_TRACE_DEBUG ("btm_proc_smp_cback event = %d", event);
if (p_dev_rec != NULL) {
switch (event) {
case SMP_IO_CAP_REQ_EVT:
btm_ble_io_capabilities_req(p_dev_rec, (tBTM_LE_IO_REQ *)&p_data->io_req);
break;
case SMP_BR_KEYS_REQ_EVT:
btm_ble_br_keys_req(p_dev_rec, (tBTM_LE_IO_REQ *)&p_data->io_req);
break;
case SMP_PASSKEY_REQ_EVT:
case SMP_PASSKEY_NOTIF_EVT:
case SMP_OOB_REQ_EVT:
case SMP_NC_REQ_EVT:
case SMP_SC_OOB_REQ_EVT:
/* fall through */
p_dev_rec->sec_flags |= BTM_SEC_LE_AUTHENTICATED;
case SMP_SEC_REQUEST_EVT:
if (event == SMP_SEC_REQUEST_EVT && btm_cb.pairing_state != BTM_PAIR_STATE_IDLE) {
BTM_TRACE_DEBUG("%s: Ignoring SMP Security request", __func__);
break;
}
memcpy (btm_cb.pairing_bda, bd_addr, BD_ADDR_LEN);
p_dev_rec->sec_state = BTM_SEC_STATE_AUTHENTICATING;
btm_cb.pairing_flags |= BTM_PAIR_FLAGS_LE_ACTIVE;
/* fall through */
case SMP_COMPLT_EVT:
if (btm_cb.api.p_le_callback) {
/* the callback function implementation may change the IO capability... */
BTM_TRACE_DEBUG ("btm_cb.api.p_le_callback=%p", btm_cb.api.p_le_callback );
(*btm_cb.api.p_le_callback) (event, bd_addr, (tBTM_LE_EVT_DATA *)p_data);
}
if (event == SMP_COMPLT_EVT) {
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 );
res = (p_data->cmplt.reason == SMP_SUCCESS) ? BTM_SUCCESS : BTM_ERR_PROCESSING;
BTM_TRACE_DEBUG ("after update result=%d sec_level=0x%x sec_flags=0x%x",
res, p_data->cmplt.sec_level , p_dev_rec->sec_flags );
if (p_data->cmplt.is_pair_cancel && btm_cb.api.p_bond_cancel_cmpl_callback ) {
BTM_TRACE_DEBUG ("Pairing Cancel completed");
(*btm_cb.api.p_bond_cancel_cmpl_callback)(BTM_SUCCESS);
}
#if BTM_BLE_CONFORMANCE_TESTING == TRUE
if (res != BTM_SUCCESS) {
if (!btm_cb.devcb.no_disc_if_pair_fail && p_data->cmplt.reason != SMP_CONN_TOUT) {
BTM_TRACE_DEBUG ("Pairing failed - prepare to remove ACL");
l2cu_start_post_bond_timer(p_dev_rec->ble_hci_handle);
} else {
BTM_TRACE_DEBUG ("Pairing failed - Not Removing ACL");
p_dev_rec->sec_state = BTM_SEC_STATE_IDLE;
}
}
#else
if (res != BTM_SUCCESS && p_data->cmplt.reason != SMP_CONN_TOUT) {
BTM_TRACE_DEBUG ("Pairing failed - prepare to remove ACL");
l2cu_start_post_bond_timer(p_dev_rec->ble_hci_handle);
}
#endif
BTM_TRACE_DEBUG ("btm_cb pairing_state=%x pairing_flags=%x",
btm_cb.pairing_state,
btm_cb.pairing_flags);
BTM_TRACE_DEBUG ("btm_cb.pairing_bda %02x:%02x:%02x:%02x:%02x:%02x",
btm_cb.pairing_bda[0], btm_cb.pairing_bda[1], btm_cb.pairing_bda[2],
btm_cb.pairing_bda[3], btm_cb.pairing_bda[4], btm_cb.pairing_bda[5]);
/* Reset btm state only if the callback address matches pairing address*/
if (memcmp(bd_addr, btm_cb.pairing_bda, BD_ADDR_LEN) == 0) {
memset (btm_cb.pairing_bda, 0xff, BD_ADDR_LEN);
btm_cb.pairing_state = BTM_PAIR_STATE_IDLE;
btm_cb.pairing_flags = 0;
}
if (res == BTM_SUCCESS) {
p_dev_rec->sec_state = BTM_SEC_STATE_IDLE;
#if (defined BLE_PRIVACY_SPT && BLE_PRIVACY_SPT == TRUE)
/* add all bonded device into resolving list if IRK is available*/
btm_ble_resolving_list_load_dev(p_dev_rec);
#endif
}
btm_sec_dev_rec_cback_event(p_dev_rec, res, TRUE);
}
break;
default:
BTM_TRACE_DEBUG ("unknown event = %d", event);
break;
}
} else {
BTM_TRACE_ERROR("btm_proc_smp_cback received for unknown device");
}
return 0;
}
#endif ///SMP_INCLUDED == TRUE
/*******************************************************************************
**
** Function BTM_BleDataSignature
**
** Description This function is called to sign the data using AES128 CMAC
** algorith.
**
** Parameter bd_addr: target device the data to be signed for.
** p_text: singing data
** len: length of the data to be signed.
** signature: output parameter where data signature is going to
** be stored.
**
** Returns TRUE if signing sucessul, otherwise FALSE.
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
BOOLEAN BTM_BleDataSignature (BD_ADDR bd_addr, UINT8 *p_text, UINT16 len,
BLE_SIGNATURE signature)
{
tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr);
BTM_TRACE_DEBUG ("%s", __func__);
#endif ///SMP_INCLUDED == TRUE
BOOLEAN ret = FALSE;
#if (SMP_INCLUDED == TRUE)
if (p_rec == NULL) {
BTM_TRACE_ERROR("%s-data signing can not be done from unknown device", __func__);
} else {
UINT8 *p_mac = (UINT8 *)signature;
UINT8 *p_buf, *pp;
if ((p_buf = (UINT8 *)osi_malloc((UINT16)(len + 4))) != NULL) {
BTM_TRACE_DEBUG("%s-Start to generate Local CSRK", __func__);
pp = p_buf;
/* prepare plain text */
if (p_text) {
memcpy(p_buf, p_text, len);
pp = (p_buf + len);
}
UINT32_TO_STREAM(pp, p_rec->ble.keys.local_counter);
UINT32_TO_STREAM(p_mac, p_rec->ble.keys.local_counter);
if ((ret = aes_cipher_msg_auth_code(p_rec->ble.keys.lcsrk, p_buf, (UINT16)(len + 4),
BTM_CMAC_TLEN_SIZE, p_mac)) == TRUE) {
btm_ble_increment_sign_ctr(bd_addr, TRUE);
}
BTM_TRACE_DEBUG("%s p_mac = %p", __func__, p_mac);
BTM_TRACE_DEBUG("p_mac[0] = 0x%02x p_mac[1] = 0x%02x p_mac[2] = 0x%02x p_mac[3] = 0x%02x",
*p_mac, *(p_mac + 1), *(p_mac + 2), *(p_mac + 3));
BTM_TRACE_DEBUG("p_mac[4] = 0x%02x p_mac[5] = 0x%02x p_mac[6] = 0x%02x p_mac[7] = 0x%02x",
*(p_mac + 4), *(p_mac + 5), *(p_mac + 6), *(p_mac + 7));
osi_free(p_buf);
}
}
return ret;
}
/*******************************************************************************
**
** Function BTM_BleVerifySignature
**
** Description This function is called to verify the data signature
**
** Parameter bd_addr: target device the data to be signed for.
** p_orig: original data before signature.
** len: length of the signing data
** counter: counter used when doing data signing
** p_comp: signature to be compared against.
** Returns TRUE if signature verified correctly; otherwise FALSE.
**
*******************************************************************************/
BOOLEAN BTM_BleVerifySignature (BD_ADDR bd_addr, UINT8 *p_orig, UINT16 len, UINT32 counter,
UINT8 *p_comp)
{
BOOLEAN verified = FALSE;
tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr);
UINT8 p_mac[BTM_CMAC_TLEN_SIZE];
if (p_rec == NULL || (p_rec && !(p_rec->ble.key_type & BTM_LE_KEY_PCSRK))) {
BTM_TRACE_ERROR("can not verify signature for unknown device");
} else if (counter < p_rec->ble.keys.counter) {
BTM_TRACE_ERROR("signature received with out dated sign counter");
} else if (p_orig == NULL) {
BTM_TRACE_ERROR("No signature to verify");
} else {
BTM_TRACE_DEBUG ("%s rcv_cnt=%d >= expected_cnt=%d", __func__, counter,
p_rec->ble.keys.counter);
if (aes_cipher_msg_auth_code(p_rec->ble.keys.pcsrk, p_orig, len, BTM_CMAC_TLEN_SIZE, p_mac)) {
if (memcmp(p_mac, p_comp, BTM_CMAC_TLEN_SIZE) == 0) {
btm_ble_increment_sign_ctr(bd_addr, FALSE);
verified = TRUE;
}
}
}
return verified;
}
#endif /* SMP_INCLUDED */
/*******************************************************************************
**
** Function BTM_GetLeSecurityState
**
** Description This function is called to get security mode 1 flags and
** encryption key size for LE peer.
**
** Returns BOOLEAN TRUE if LE device is found, FALSE otherwise.
**
*******************************************************************************/
BOOLEAN BTM_GetLeSecurityState (BD_ADDR bd_addr, UINT8 *p_le_dev_sec_flags, UINT8 *p_le_key_size)
{
#if (BLE_INCLUDED == TRUE && SMP_INCLUDED == TRUE)
tBTM_SEC_DEV_REC *p_dev_rec;
UINT16 dev_rec_sec_flags;
#endif
*p_le_dev_sec_flags = 0;
*p_le_key_size = 0;
#if (BLE_INCLUDED == TRUE && SMP_INCLUDED == TRUE)
if ((p_dev_rec = btm_find_dev (bd_addr)) == NULL) {
BTM_TRACE_ERROR ("%s fails", __func__);
return (FALSE);
}
if (p_dev_rec->ble_hci_handle == BTM_SEC_INVALID_HANDLE) {
BTM_TRACE_ERROR ("%s-this is not LE device", __func__);
return (FALSE);
}
dev_rec_sec_flags = p_dev_rec->sec_flags;
if (dev_rec_sec_flags & BTM_SEC_LE_ENCRYPTED) {
/* link is encrypted with LTK or STK */
*p_le_key_size = p_dev_rec->enc_key_size;
*p_le_dev_sec_flags |= BTM_SEC_LE_LINK_ENCRYPTED;
*p_le_dev_sec_flags |= (dev_rec_sec_flags & BTM_SEC_LE_AUTHENTICATED)
? BTM_SEC_LE_LINK_PAIRED_WITH_MITM /* set auth LTK flag */
: BTM_SEC_LE_LINK_PAIRED_WITHOUT_MITM; /* set unauth LTK flag */
} else if (p_dev_rec->ble.key_type & BTM_LE_KEY_PENC) {
/* link is unencrypted, still LTK is available */
*p_le_key_size = p_dev_rec->ble.keys.key_size;
*p_le_dev_sec_flags |= (dev_rec_sec_flags & BTM_SEC_LE_LINK_KEY_AUTHED)
? BTM_SEC_LE_LINK_PAIRED_WITH_MITM /* set auth LTK flag */
: BTM_SEC_LE_LINK_PAIRED_WITHOUT_MITM; /* set unauth LTK flag */
}
BTM_TRACE_DEBUG ("%s - le_dev_sec_flags: 0x%02x, le_key_size: %d",
__func__, *p_le_dev_sec_flags, *p_le_key_size);
return TRUE;
#else
return FALSE;
#endif
}
/*******************************************************************************
**
** Function BTM_BleSecurityProcedureIsRunning
**
** Description This function indicates if LE security procedure is
** currently running with the peer.
**
** Returns BOOLEAN TRUE if security procedure is running, FALSE otherwise.
**
*******************************************************************************/
BOOLEAN BTM_BleSecurityProcedureIsRunning(BD_ADDR bd_addr)
{
#if (BLE_INCLUDED == TRUE)
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
if (p_dev_rec == NULL) {
BTM_TRACE_ERROR ("%s device with BDA: %08x%04x is not found",
__func__, (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
(bd_addr[4] << 8) + bd_addr[5]);
return FALSE;
}
return (p_dev_rec->sec_state == BTM_SEC_STATE_ENCRYPTING ||
p_dev_rec->sec_state == BTM_SEC_STATE_AUTHENTICATING);
#else
return FALSE;
#endif
}
/*******************************************************************************
**
** Function BTM_BleGetSupportedKeySize
**
** Description This function gets the maximum encryption key size in bytes
** the local device can suport.
** record.
**
** Returns the key size or 0 if the size can't be retrieved.
**
*******************************************************************************/
extern UINT8 BTM_BleGetSupportedKeySize (BD_ADDR bd_addr)
{
#ifndef L2CAP_LE_COC_INCLUDED
#define L2CAP_LE_COC_INCLUDED FALSE
#endif
#if ((BLE_INCLUDED == TRUE) && (L2CAP_LE_COC_INCLUDED == TRUE))
tBTM_SEC_DEV_REC *p_dev_rec = btm_find_dev (bd_addr);
tBTM_LE_IO_REQ dev_io_cfg;
UINT8 callback_rc;
if (!p_dev_rec) {
BTM_TRACE_ERROR ("%s device with BDA: %08x%04x is not found",
__func__, (bd_addr[0] << 24) + (bd_addr[1] << 16) + (bd_addr[2] << 8) + bd_addr[3],
(bd_addr[4] << 8) + bd_addr[5]);
return 0;
}
if (btm_cb.api.p_le_callback == NULL) {
BTM_TRACE_ERROR ("%s can't access supported key size", __func__);
return 0;
}
callback_rc = (*btm_cb.api.p_le_callback) (BTM_LE_IO_REQ_EVT, p_dev_rec->bd_addr,
(tBTM_LE_EVT_DATA *) &dev_io_cfg);
if (callback_rc != BTM_SUCCESS) {
BTM_TRACE_ERROR ("%s can't access supported key size", __func__);
return 0;
}
BTM_TRACE_DEBUG ("%s device supports key size = %d", __func__, dev_io_cfg.max_key_size);
return (dev_io_cfg.max_key_size);
#else
return 0;
#endif
}
/*******************************************************************************
** Utility functions for LE device IR/ER generation
*******************************************************************************/
/*******************************************************************************
**
** Function btm_notify_new_key
**
** Description This function is to notify application new keys have been
** generated.
**
** Returns void
**
*******************************************************************************/
#if (SMP_INCLUDED == TRUE)
static void btm_notify_new_key(UINT8 key_type)
{
tBTM_BLE_LOCAL_KEYS *p_locak_keys = NULL;
BTM_TRACE_DEBUG ("btm_notify_new_key key_type=%d", key_type);
if (btm_cb.api.p_le_key_callback) {
switch (key_type) {
case BTM_BLE_KEY_TYPE_ID:
BTM_TRACE_DEBUG ("BTM_BLE_KEY_TYPE_ID");
p_locak_keys = (tBTM_BLE_LOCAL_KEYS *)&btm_cb.devcb.id_keys;
break;
case BTM_BLE_KEY_TYPE_ER:
BTM_TRACE_DEBUG ("BTM_BLE_KEY_TYPE_ER");
p_locak_keys = (tBTM_BLE_LOCAL_KEYS *)&btm_cb.devcb.ble_encryption_key_value;
break;
default:
BTM_TRACE_ERROR("unknown key type: %d", key_type);
break;
}
if (p_locak_keys != NULL) {
(*btm_cb.api.p_le_key_callback) (key_type, p_locak_keys);
}
}
}
/*******************************************************************************
**
** Function btm_ble_process_er2
**
** Description This function is called when ER is generated, store it in
** local control block.
**
** Returns void
**
*******************************************************************************/
static void btm_ble_process_er2(tBTM_RAND_ENC *p)
{
BTM_TRACE_DEBUG ("btm_ble_process_er2");
if (p && p->opcode == HCI_BLE_RAND) {
memcpy(&btm_cb.devcb.ble_encryption_key_value[8], p->param_buf, BT_OCTET8_LEN);
btm_notify_new_key(BTM_BLE_KEY_TYPE_ER);
} else {
BTM_TRACE_ERROR("Generating ER2 exception.");
memset(&btm_cb.devcb.ble_encryption_key_value, 0, sizeof(BT_OCTET16));
}
}
/*******************************************************************************
**
** Function btm_ble_process_er
**
** Description This function is called when ER is generated, store it in
** local control block.
**
** Returns void
**
*******************************************************************************/
static void btm_ble_process_er(tBTM_RAND_ENC *p)
{
BTM_TRACE_DEBUG ("btm_ble_process_er");
if (p && p->opcode == HCI_BLE_RAND) {
memcpy(&btm_cb.devcb.ble_encryption_key_value[0], p->param_buf, BT_OCTET8_LEN);
if (!btsnd_hcic_ble_rand((void *)btm_ble_process_er2)) {
memset(&btm_cb.devcb.ble_encryption_key_value, 0, sizeof(BT_OCTET16));
BTM_TRACE_ERROR("Generating ER2 failed.");
}
} else {
BTM_TRACE_ERROR("Generating ER1 exception.");
}
}
/*******************************************************************************
**
** Function btm_ble_process_irk
**
** Description This function is called when IRK is generated, store it in
** local control block.
**
** Returns void
**
*******************************************************************************/
static void btm_ble_process_irk(tSMP_ENC *p)
{
BTM_TRACE_DEBUG ("btm_ble_process_irk");
if (p && p->opcode == HCI_BLE_ENCRYPT) {
memcpy(btm_cb.devcb.id_keys.irk, p->param_buf, BT_OCTET16_LEN);
btm_notify_new_key(BTM_BLE_KEY_TYPE_ID);
#if BLE_PRIVACY_SPT == TRUE
/* if privacy is enabled, new RPA should be calculated */
if (btm_cb.ble_ctr_cb.privacy_mode != BTM_PRIVACY_NONE) {
btm_gen_resolvable_private_addr((void *)btm_gen_resolve_paddr_low);
}
#endif
} else {
BTM_TRACE_ERROR("Generating IRK exception.");
}
/* proceed generate ER */
if (!btsnd_hcic_ble_rand((void *)btm_ble_process_er)) {
BTM_TRACE_ERROR("Generating ER failed.");
}
}
/*******************************************************************************
**
** Function btm_ble_process_dhk
**
** Description This function is called when DHK is calculated, store it in
** local control block, and proceed to generate ER, a 128-bits
** random number.
**
** Returns void
**
*******************************************************************************/
static void btm_ble_process_dhk(tSMP_ENC *p)
{
UINT8 btm_ble_irk_pt = 0x01;
tSMP_ENC output;
BTM_TRACE_DEBUG ("btm_ble_process_dhk");
if (p && p->opcode == HCI_BLE_ENCRYPT) {
memcpy(btm_cb.devcb.id_keys.dhk, p->param_buf, BT_OCTET16_LEN);
BTM_TRACE_DEBUG("BLE DHK generated.");
/* IRK = D1(IR, 1) */
if (!SMP_Encrypt(btm_cb.devcb.id_keys.ir, BT_OCTET16_LEN, &btm_ble_irk_pt,
1, &output)) {
/* reset all identity root related key */
memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
} else {
btm_ble_process_irk(&output);
}
} else {
/* reset all identity root related key */
memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
}
}
/*******************************************************************************
**
** Function btm_ble_process_ir2
**
** Description This function is called when IR is generated, proceed to calculate
** DHK = Eir({0x03, 0, 0 ...})
**
**
** Returns void
**
*******************************************************************************/
static void btm_ble_process_ir2(tBTM_RAND_ENC *p)
{
UINT8 btm_ble_dhk_pt = 0x03;
tSMP_ENC output;
BTM_TRACE_DEBUG ("btm_ble_process_ir2");
if (p && p->opcode == HCI_BLE_RAND) {
/* remembering in control block */
memcpy(&btm_cb.devcb.id_keys.ir[8], p->param_buf, BT_OCTET8_LEN);
/* generate DHK= Eir({0x03, 0x00, 0x00 ...}) */
SMP_Encrypt(btm_cb.devcb.id_keys.ir, BT_OCTET16_LEN, &btm_ble_dhk_pt,
1, &output);
btm_ble_process_dhk(&output);
BTM_TRACE_DEBUG("BLE IR generated.");
} else {
memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
}
}
/*******************************************************************************
**
** Function btm_ble_process_ir
**
** Description This function is called when IR is generated, proceed to calculate
** DHK = Eir({0x02, 0, 0 ...})
**
**
** Returns void
**
*******************************************************************************/
static void btm_ble_process_ir(tBTM_RAND_ENC *p)
{
BTM_TRACE_DEBUG ("btm_ble_process_ir");
if (p && p->opcode == HCI_BLE_RAND) {
/* remembering in control block */
memcpy(btm_cb.devcb.id_keys.ir, p->param_buf, BT_OCTET8_LEN);
if (!btsnd_hcic_ble_rand((void *)btm_ble_process_ir2)) {
BTM_TRACE_ERROR("Generating IR2 failed.");
memset(&btm_cb.devcb.id_keys, 0, sizeof(tBTM_BLE_LOCAL_ID_KEYS));
}
}
}
/*******************************************************************************
**
** Function btm_ble_reset_id
**
** Description This function is called to reset LE device identity.
**
** Returns void
**
*******************************************************************************/
void btm_ble_reset_id( void )
{
BTM_TRACE_DEBUG ("btm_ble_reset_id");
/* regenrate Identity Root*/
if (!btsnd_hcic_ble_rand((void *)btm_ble_process_ir)) {
BTM_TRACE_DEBUG("Generating IR failed.");
}
}
#endif ///SMP_INCLUDED == TRUE
#if BTM_BLE_CONFORMANCE_TESTING == TRUE
/*******************************************************************************
**
** Function btm_ble_set_no_disc_if_pair_fail
**
** Description This function indicates that whether no disconnect of the ACL
** should be used if pairing failed
**
** Returns void
**
*******************************************************************************/
void btm_ble_set_no_disc_if_pair_fail(BOOLEAN disable_disc )
{
BTM_TRACE_DEBUG ("btm_ble_set_disc_enable_if_pair_fail disable_disc=%d", disable_disc);
btm_cb.devcb.no_disc_if_pair_fail = disable_disc;
}
/*******************************************************************************
**
** Function btm_ble_set_test_mac_value
**
** Description This function set test MAC value
**
** Returns void
**
*******************************************************************************/
void btm_ble_set_test_mac_value(BOOLEAN enable, UINT8 *p_test_mac_val )
{
BTM_TRACE_DEBUG ("btm_ble_set_test_mac_value enable=%d", enable);
btm_cb.devcb.enable_test_mac_val = enable;
memcpy(btm_cb.devcb.test_mac, p_test_mac_val, BT_OCTET8_LEN);
}
/*******************************************************************************
**
** Function btm_ble_set_test_local_sign_cntr_value
**
** Description This function set test local sign counter value
**
** Returns void
**
*******************************************************************************/
void btm_ble_set_test_local_sign_cntr_value(BOOLEAN enable, UINT32 test_local_sign_cntr )
{
BTM_TRACE_DEBUG ("btm_ble_set_test_local_sign_cntr_value enable=%d local_sign_cntr=%d",
enable, test_local_sign_cntr);
btm_cb.devcb.enable_test_local_sign_cntr = enable;
btm_cb.devcb.test_local_sign_cntr = test_local_sign_cntr;
}
/*******************************************************************************
**
** Function btm_set_random_address
**
** Description This function set a random address to local controller.
**
** Returns void
**
*******************************************************************************/
void btm_set_random_address(BD_ADDR random_bda)
{
tBTM_LE_RANDOM_CB *p_cb = &btm_cb.ble_ctr_cb.addr_mgnt_cb;
BOOLEAN adv_mode = btm_cb.ble_ctr_cb.inq_var.adv_mode ;
BTM_TRACE_DEBUG ("btm_set_random_address");
if (adv_mode == BTM_BLE_ADV_ENABLE) {
btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_DISABLE);
}
memcpy(p_cb->private_addr, random_bda, BD_ADDR_LEN);
btsnd_hcic_ble_set_random_addr(p_cb->private_addr);
if (adv_mode == BTM_BLE_ADV_ENABLE) {
btsnd_hcic_ble_set_adv_enable (BTM_BLE_ADV_ENABLE);
}
}
/*******************************************************************************
**
** Function btm_ble_set_keep_rfu_in_auth_req
**
** Description This function indicates if RFU bits have to be kept as is
** (by default they have to be set to 0 by the sender).
**
** Returns void
**
*******************************************************************************/
void btm_ble_set_keep_rfu_in_auth_req(BOOLEAN keep_rfu)
{
BTM_TRACE_DEBUG ("btm_ble_set_keep_rfu_in_auth_req keep_rfus=%d", keep_rfu);
btm_cb.devcb.keep_rfu_in_auth_req = keep_rfu;
}
#endif /* BTM_BLE_CONFORMANCE_TESTING */
/*******************************************************************************
**
** Function btm_get_current_conn_params
**
** Description This function is called to get current connection parameters
** information of the device
**
** Returns TRUE if the information is geted, else FALSE
**
*******************************************************************************/
BOOLEAN btm_get_current_conn_params(BD_ADDR bda, UINT16 *interval, UINT16 *latency, UINT16 *timeout)
{
if( (interval == NULL) || (latency == NULL) || (timeout == NULL) ) {
BTM_TRACE_ERROR("%s invalid parameters ", __func__);
return FALSE;
}
tL2C_LCB *p_lcb = l2cu_find_lcb_by_bd_addr(bda, BT_TRANSPORT_LE);
if(p_lcb != NULL) {
(*interval) = p_lcb->current_used_conn_interval;
(*latency) = p_lcb->current_used_conn_latency;
(*timeout) = p_lcb->current_used_conn_timeout;
return TRUE;
}
BTM_TRACE_WARNING("%s Device is not connected", __func__);
return FALSE;
}
#endif /* BLE_INCLUDED */
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