| /****************************************************************************** |
| * |
| * 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 "bt_target.h" |
| |
| #if BLE_INCLUDED == TRUE |
| |
| #include <string.h> |
| |
| #include "bt_types.h" |
| #include "hcimsgs.h" |
| #include "btu.h" |
| #include "btm_int.h" |
| #include "btm_ble_api.h" |
| #include "smp_api.h" |
| #include "l2c_int.h" |
| #include "gap_api.h" |
| #include "bt_utils.h" |
| |
| #include "vendor_ble.h" |
| #define LOG_TAG "bt_btm_ble" |
| #include "osi/include/log.h" |
| |
| #if SMP_INCLUDED == TRUE |
| extern BOOLEAN AES_CMAC ( 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. |
| ** |
| ** Returns TRUE if added OK, else FALSE |
| ** |
| *******************************************************************************/ |
| BOOLEAN BTM_SecAddBleDevice (BD_ADDR bd_addr, BD_NAME bd_name, tBT_DEVICE_TYPE dev_type, |
| tBLE_ADDR_TYPE addr_type) |
| { |
| 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, sizeof (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; |
| BTM_TRACE_DEBUG ("p_dev_rec->device_type =0x%x addr_type=0x%x sec_flags=0x%x", |
| dev_type, addr_type, p_dev_rec->sec_flags); |
| |
| /* 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); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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 |
| ** |
| *******************************************************************************/ |
| BOOLEAN BTM_SecAddBleKey (BD_ADDR bd_addr, tBTM_LE_KEY_VALUE *p_le_key, tBTM_LE_KEY_TYPE key_type) |
| { |
| #if SMP_INCLUDED == TRUE |
| 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)) |
| { |
| 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); |
| |
| if (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) |
| { |
| btm_sec_save_le_key (bd_addr, key_type, p_le_key, FALSE); |
| } |
| |
| #endif |
| |
| return(TRUE); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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 ("BTM_BleLoadLocalKeys"); |
| 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->er, 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 er |
| ** |
| *******************************************************************************/ |
| void BTM_GetDeviceEncRoot (BT_OCTET16 er) |
| { |
| BTM_TRACE_DEBUG ("BTM_GetDeviceEncRoot"); |
| |
| memcpy (er, btm_cb.devcb.er, 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_LINK_KEY_AUTHED; |
| BTM_TRACE_DEBUG ("BTM_BlePasskeyReply"); |
| SMP_PasskeyReply(bd_addr, res_smp, passkey); |
| #endif |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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_LINK_KEY_AUTHED; |
| 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 (UINT16 scan_interval, UINT16 scan_window) |
| { |
| #if SMP_INCLUDED == TRUE |
| tBTM_BLE_CB *p_ble_cb = &btm_cb.ble_ctr_cb; |
| BOOLEAN new_param = FALSE; |
| |
| if (BTM_BLE_VALID_PRAM(scan_interval, BTM_BLE_SCAN_INT_MIN, BTM_BLE_SCAN_INT_MAX) && |
| BTM_BLE_VALID_PRAM(scan_window, BTM_BLE_SCAN_WIN_MIN, BTM_BLE_SCAN_WIN_MAX)) |
| { |
| btu_stop_timer(&p_ble_cb->scan_param_idle_timer); |
| |
| 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_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_VALID_PRAM(min_conn_int, BTM_BLE_CONN_INT_MIN, BTM_BLE_CONN_INT_MAX) && |
| BTM_BLE_VALID_PRAM(max_conn_int, BTM_BLE_CONN_INT_MIN, BTM_BLE_CONN_INT_MAX) && |
| BTM_BLE_VALID_PRAM(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); |
| |
| *p_dev_type = BT_DEVICE_TYPE_BREDR; |
| *p_addr_type = BLE_ADDR_PUBLIC; |
| |
| if (!p_dev_rec) |
| { |
| /* 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 { |
| /* 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; |
| } |
| *p_dev_type = p_dev_rec->device_type; |
| *p_addr_type = p_dev_rec->ble.ble_addr_type; |
| |
| } |
| |
| BTM_TRACE_DEBUG ("btm_find_dev_type - device_type = %d addr_type = %d", *p_dev_type , *p_addr_type); |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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; |
| UINT8 status; |
| |
| 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; |
| 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_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(¶ms, 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)(¶ms); /* Call the Encryption complete callback function */ |
| } |
| } |
| |
| |
| #if (SMP_INCLUDED == TRUE) |
| |
| /******************************************************************************* |
| ** |
| ** Function btm_ble_get_enc_key_type |
| ** |
| ** Description This function is to increment local sign counter |
| ** Returns None |
| ** |
| *******************************************************************************/ |
| 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); |
| } |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| 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 TURE - 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) |
| { |
| switch (key_type) |
| { |
| case BTM_LE_KEY_PENC: |
| memcpy(p_rec->ble.keys.ltk, 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); |
| break; |
| |
| case BTM_LE_KEY_PCSRK: |
| memcpy(p_rec->ble.keys.csrk, 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: |
| 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; |
| |
| 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 */ |
| 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; |
| |
| 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; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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_BOND|BTM_LE_AUTH_REQ_MITM)) || |
| (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_LINK_KEY_AUTHED) |
| 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); |
| |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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; |
| tBTM_BLE_SEC_ACT sec_act = *(tBTM_BLE_SEC_ACT *)p_ref_data ; |
| tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr); |
| |
| 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) |
| { |
| if(p_rec->sec_state == BTM_SEC_STATE_ENCRYPTING) { |
| BTM_TRACE_DEBUG ("State is already encrypting::"); |
| cmd = BTM_CMD_STARTED; |
| } |
| else { |
| /* start link layer encryption using the security info stored */ |
| if (btm_ble_start_encrypt(bd_addr, FALSE, NULL)) |
| { |
| p_rec->sec_state = BTM_SEC_STATE_ENCRYPTING; |
| cmd = BTM_CMD_STARTED; |
| } |
| } |
| 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 (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; |
| } |
| return cmd; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function btm_ble_ltk_request |
| ** |
| ** Description This function is called when encryption request is received |
| ** on a slave device. |
| ** |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| 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); |
| } |
| |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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) |
| { |
| tBTM_CB *p_cb = &btm_cb; |
| tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bda); |
| BT_OCTET8 dummy_rand = {0}; |
| tBTM_STATUS rt = BTM_NO_RESOURCES; |
| |
| 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.ltk)) |
| 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; |
| } |
| |
| return rt; |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function btm_ble_link_encrypted |
| ** |
| ** Description This function is called when LE link encrption status is changed. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| 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->bd_addr); |
| } |
| |
| /******************************************************************************* |
| ** Function btm_enc_proc_ltk |
| ** Description send LTK reply when it's ready. |
| *******************************************************************************/ |
| static void btm_enc_proc_ltk(tSMP_ENC *p) |
| { |
| UINT8 i; |
| BTM_TRACE_DEBUG ("btm_enc_proc_ltk"); |
| if (p && p->param_len == BT_OCTET16_LEN) |
| { |
| for (i = 0; i < (BT_OCTET16_LEN - btm_cb.key_size); i ++) |
| p->param_buf[BT_OCTET16_LEN - i - 1] = 0; |
| btsnd_hcic_ble_ltk_req_reply(btm_cb.enc_handle, p->param_buf); |
| } |
| } |
| |
| /******************************************************************************* |
| ** Function btm_enc_proc_slave_y |
| ** Description calculate LTK when Y is ready |
| *******************************************************************************/ |
| static void btm_enc_proc_slave_y(tSMP_ENC *p) |
| { |
| UINT16 div, y; |
| UINT8 *pp = p->param_buf; |
| tBTM_CB *p_cb = &btm_cb; |
| tSMP_ENC output; |
| tBTM_SEC_DEV_REC *p_dev_rec; |
| |
| BTM_TRACE_DEBUG ("btm_enc_proc_slave_y"); |
| if (p != NULL) |
| { |
| STREAM_TO_UINT16(y, pp); |
| |
| div = p_cb->ediv ^ y; |
| p_dev_rec = btm_find_dev_by_handle (p_cb->enc_handle); |
| |
| if ( p_dev_rec && |
| p_dev_rec->ble.keys.div == div ) |
| { |
| BTM_TRACE_DEBUG ("LTK request OK"); |
| /* calculating LTK , LTK = E er(div) */ |
| SMP_Encrypt(p_cb->devcb.er, BT_OCTET16_LEN, (UINT8 *)&div, 2, &output); |
| btm_enc_proc_ltk(&output); |
| } |
| else |
| { |
| BTM_TRACE_DEBUG ("LTK request failed - send negative reply"); |
| btsnd_hcic_ble_ltk_req_neg_reply(p_cb->enc_handle); |
| if (p_dev_rec) |
| btm_ble_link_encrypted(p_dev_rec->bd_addr, 0); |
| |
| } |
| } |
| } |
| |
| /******************************************************************************* |
| ** |
| ** Function btm_ble_ltk_request_reply |
| ** |
| ** Description This function is called to send a LTK request reply on a slave |
| ** device. |
| ** |
| ** Returns void |
| ** |
| *******************************************************************************/ |
| 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; |
| tSMP_ENC output; |
| |
| 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_ERROR("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 */ |
| { |
| /* generate Y= Encrypt(DHK, Rand) received from encrypt request */ |
| SMP_Encrypt(p_cb->devcb.id_keys.dhk, BT_OCTET16_LEN, p_cb->enc_rand, |
| BT_OCTET8_LEN, &output); |
| btm_enc_proc_slave_y(&output); |
| } |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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", p_data->auth_req); |
| BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 4: i_keys=0x%x r_keys=0x%x", |
| 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", |
| 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; |
| |
| BTM_TRACE_DEBUG ("btm_ble_io_capabilities_req 6: IO_CAP:%d oob_data:%d auth_req:%d", |
| p_data->io_cap, p_data->oob_data, p_data->auth_req); |
| } |
| return callback_rc; |
| } |
| |
| #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; |
| 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); |
| 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", __func__); |
| |
| if (match_rec) |
| { |
| LOG_INFO("%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); |
| memcpy(bda, match_rec->bd_addr, BD_ADDR_LEN); |
| } |
| else |
| { |
| LOG_INFO("%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 */ |
| p_dev_rec = btm_sec_alloc_dev (bda); |
| } |
| 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; |
| |
| 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 |
| |
| if (role == HCI_ROLE_SLAVE) |
| p_cb->inq_var.adv_mode = BTM_BLE_ADV_DISABLE; |
| p_cb->inq_var.directed_conn = FALSE; |
| |
| return; |
| } |
| |
| /***************************************************************************** |
| ** Function btm_ble_conn_complete |
| ** |
| ** Description LE connection complete. |
| ** |
| ******************************************************************************/ |
| void btm_ble_conn_complete(UINT8 *p, UINT16 evt_len) |
| { |
| #if (BLE_PRIVACY_SPT == TRUE ) |
| UINT8 *p_data = p; |
| #endif |
| UINT8 role, status, bda_type; |
| UINT16 handle; |
| BD_ADDR bda = {0}; |
| 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); |
| |
| if (status == 0) |
| { |
| #if (BLE_PRIVACY_SPT == TRUE ) |
| |
| if (btm_cb.cmn_ble_vsc_cb.rpa_offloading == TRUE) |
| match = btm_public_addr_to_random_pseudo (bda, &bda_type); |
| |
| /* possiblly receive connection complete with resolvable random on |
| slave role while the device has been paired */ |
| if (!match && /*role == HCI_ROLE_SLAVE && */BTM_BLE_IS_RESOLVE_BDA(bda)) |
| { |
| btm_ble_resolve_random_addr(bda, btm_ble_resolve_random_addr_on_conn_cmpl, p_data); |
| } |
| 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); |
| } |
| } |
| else |
| { |
| role = HCI_ROLE_UNKNOWN; |
| |
| if (status != HCI_ERR_DIRECTED_ADVERTISING_TIMEOUT) |
| { |
| btm_ble_set_conn_st(BLE_CONN_IDLE); |
| } |
| /* this is to work around broadcom firmware problem to handle |
| * unsolicited command complete event for HCI_LE_Create_Connection_Cancel |
| * and LE connection complete event with status error code (0x2) |
| * unknown connection identifier from bluetooth controller |
| * the workaround is to release the HCI connection to avoid out of sync |
| * with bluetooth controller, which cause BT can't be turned off. |
| */ |
| else if ((status == HCI_ERR_NO_CONNECTION) && |
| (btm_ble_get_conn_st() != BLE_CONN_CANCEL)) |
| { |
| tL2C_LCB *p_lcb; |
| handle = HCID_GET_HANDLE (handle); |
| p_lcb = l2cu_find_lcb_by_handle (handle); |
| if (p_lcb != NULL) |
| { |
| l2c_link_hci_disc_comp (handle, HCI_ERR_PEER_USER); |
| btm_sec_disconnected (handle, HCI_ERR_PEER_USER); |
| } |
| } |
| } |
| btm_ble_set_conn_st(BLE_CONN_IDLE); |
| btm_ble_update_mode_operation(role, bda, status); |
| } |
| |
| /***************************************************************************** |
| ** Function btm_ble_create_ll_conn_complete |
| ** |
| ** Description LE connection complete. |
| ** |
| ******************************************************************************/ |
| void btm_ble_create_ll_conn_complete (UINT8 status) |
| { |
| if (status != 0) |
| { |
| btm_ble_set_conn_st(BLE_CONN_IDLE); |
| btm_ble_update_mode_operation(HCI_ROLE_UNKNOWN, NULL, status); |
| } |
| } |
| /***************************************************************************** |
| ** Function btm_proc_smp_cback |
| ** |
| ** Description This function is the SMP callback handler. |
| ** |
| ******************************************************************************/ |
| 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_PASSKEY_REQ_EVT: |
| case SMP_PASSKEY_NOTIF_EVT: |
| case SMP_OOB_REQ_EVT: |
| 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=0x%x", 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 ); |
| |
| btm_sec_dev_rec_cback_event(p_dev_rec, res, TRUE); |
| |
| 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 - Remove ACL"); |
| btm_remove_acl(bd_addr, BT_TRANSPORT_LE); |
| } |
| 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_remove_acl(bd_addr, BT_TRANSPORT_LE); |
| #endif |
| |
| BTM_TRACE_DEBUG ("btm_cb pairing_state=%x pairing_flags=%x pin_code_len=%x", |
| btm_cb.pairing_state, |
| btm_cb.pairing_flags, |
| btm_cb.pin_code_len ); |
| 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; |
| } |
| } |
| 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 */ |
| |
| /******************************************************************************* |
| ** |
| ** 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. |
| ** |
| *******************************************************************************/ |
| BOOLEAN BTM_BleDataSignature (BD_ADDR bd_addr, UINT8 *p_text, UINT16 len, |
| BLE_SIGNATURE signature) |
| { |
| BOOLEAN ret = FALSE; |
| #if SMP_INCLUDED == TRUE |
| tBTM_SEC_DEV_REC *p_rec = btm_find_dev (bd_addr); |
| UINT8 *p_buf, *pp; |
| |
| BT_OCTET16 er; |
| UINT16 div; |
| UINT8 temp[4]; /* for (r || DIV) r=1*/ |
| UINT16 r=1; |
| UINT8 *p=temp, *p_mac = (UINT8 *)signature; |
| tSMP_ENC output; |
| BT_OCTET16 local_csrk; |
| |
| BTM_TRACE_DEBUG ("BTM_BleDataSignature"); |
| if (p_rec == NULL) |
| { |
| BTM_TRACE_ERROR("data signing can not be done from unknow device"); |
| } |
| else |
| { |
| if ((p_buf = (UINT8 *)GKI_getbuf((UINT16)(len + 4))) != NULL) |
| { |
| BTM_TRACE_DEBUG("Start to generate Local CSRK"); |
| pp = p_buf; |
| /* prepare plain text */ |
| if (p_text) |
| { |
| memcpy(p_buf, p_text, len); |
| pp = (p_buf + len); |
| } |
| |
| #if BTM_BLE_CONFORMANCE_TESTING == TRUE |
| if ( btm_cb.devcb.enable_test_local_sign_cntr) |
| { |
| BTM_TRACE_DEBUG ("Use Test local counter value from script counter_val=%d", btm_cb.devcb.test_local_sign_cntr); |
| UINT32_TO_STREAM(pp, btm_cb.devcb.test_local_sign_cntr); |
| } |
| else |
| { |
| UINT32_TO_STREAM(pp, p_rec->ble.keys.local_counter); |
| } |
| #else |
| UINT32_TO_STREAM(pp, p_rec->ble.keys.local_counter); |
| #endif |
| /* compute local csrk */ |
| if (btm_get_local_div(bd_addr, &div)) |
| { |
| BTM_TRACE_DEBUG ("compute_csrk div=%x", div); |
| BTM_GetDeviceEncRoot(er); |
| |
| /* CSRK = d1(ER, DIV, 1) */ |
| UINT16_TO_STREAM(p, div); |
| UINT16_TO_STREAM(p, r); |
| |
| if (!SMP_Encrypt(er, BT_OCTET16_LEN, temp, 4, &output)) |
| { |
| BTM_TRACE_ERROR("Local CSRK generation failed "); |
| } |
| else |
| { |
| BTM_TRACE_DEBUG("local CSRK generation success"); |
| memcpy((void *)local_csrk, output.param_buf, BT_OCTET16_LEN); |
| |
| |
| #if BTM_BLE_CONFORMANCE_TESTING == TRUE |
| if (btm_cb.devcb.enable_test_local_sign_cntr) |
| { |
| UINT32_TO_STREAM(p_mac, btm_cb.devcb.test_local_sign_cntr); |
| } |
| else |
| { |
| UINT32_TO_STREAM(p_mac, p_rec->ble.keys.local_counter); |
| } |
| #else |
| UINT32_TO_STREAM(p_mac, p_rec->ble.keys.local_counter); |
| #endif |
| |
| if ((ret = AES_CMAC(local_csrk, p_buf, (UINT16)(len + 4), BTM_CMAC_TLEN_SIZE, p_mac)) == TRUE) |
| { |
| btm_ble_increment_sign_ctr(bd_addr, TRUE); |
| |
| #if BTM_BLE_CONFORMANCE_TESTING == TRUE |
| if ( btm_cb.devcb.enable_test_mac_val) |
| { |
| BTM_TRACE_DEBUG ("Use MAC value from script"); |
| memcpy(p_mac, btm_cb.devcb.test_mac, BTM_CMAC_TLEN_SIZE); |
| } |
| #endif |
| } |
| BTM_TRACE_DEBUG("BTM_BleDataSignature p_mac = %d", 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)); |
| |
| GKI_freebuf(p_buf); |
| } |
| } |
| } |
| } |
| #endif /* SMP_INCLUDED */ |
| 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; |
| #if SMP_INCLUDED == TRUE |
| 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 ("BTM_BleVerifySignature rcv_cnt=%d >= expected_cnt=%d", counter, p_rec->ble.keys.counter); |
| |
| if (AES_CMAC(p_rec->ble.keys.csrk, 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; |
| } |
| } |
| } |
| #endif /* SMP_INCLUDED */ |
| return verified; |
| } |
| |
| /******************************************************************************* |
| ** 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 |
| ** |
| *******************************************************************************/ |
| 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.er; |
| 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.er[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.er, 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.er[0], p->param_buf, BT_OCTET8_LEN); |
| |
| if (!btsnd_hcic_ble_rand((void *)btm_ble_process_er2)) |
| { |
| memset(&btm_cb.devcb.er, 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); |
| } |
| 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) |
| { |
| #if SMP_INCLUDED == TRUE |
| 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)); |
| } |
| #endif |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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) |
| { |
| #if SMP_INCLUDED == TRUE |
| 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)); |
| } |
| #endif |
| } |
| |
| /******************************************************************************* |
| ** |
| ** 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."); |
| } |
| } |
| |
| #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 */ |
| |
| #endif /* BLE_INCLUDED */ |