system/stack/btm/btm_dev.h

/*
 * Copyright 2020 The Android Open Source Project
 *
 * 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.
 */

#include "osi/include/log.h"
#include "stack/btm/btm_ble_int.h"
#include "stack/btm/security_device_record.h"
#include "stack/include/acl_api.h"
#include "stack/include/hcimsgs.h"
#include "types/raw_address.h"

/*******************************************************************************
 *
 * Function         BTM_SecAddDevice
 *
 * Description      Add/modify device.  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
 *                  dev_class        - Device Class
 *                  bd_name          - Name of the peer device. NULL if unknown.
 *                  features         - Remote device's features (up to 3 pages).
 *                                     NULL if not known
 *                  link_key         - Connection link key. NULL if unknown.
 *
 * Returns          true if added OK, else false
 *
 ******************************************************************************/
bool BTM_SecAddDevice(const RawAddress& bd_addr, DEV_CLASS dev_class,
                      BD_NAME bd_name, uint8_t* features, LinkKey* p_link_key,
                      uint8_t key_type, uint8_t pin_length);
void wipe_secrets_and_remove(tBTM_SEC_DEV_REC* p_dev_rec);

/** Free resources associated with the device associated with |bd_addr| address.
 *
 * *** WARNING ***
 * tBTM_SEC_DEV_REC associated with bd_addr becomes invalid after this function
 * is called, also any of it's fields. i.e. if you use p_dev_rec->bd_addr, it is
 * no longer valid!
 * *** WARNING ***
 *
 * Returns true if removed OK, false if not found or ACL link is active.
 */
bool BTM_SecDeleteDevice(const RawAddress& bd_addr);

/*******************************************************************************
 *
 * Function         BTM_SecClearSecurityFlags
 *
 * Description      Reset the security flags (mark as not-paired) for a given
 *                  remove device.
 *
 ******************************************************************************/
void BTM_SecClearSecurityFlags(const RawAddress& bd_addr);

/*******************************************************************************
 *
 * Function         BTM_SecReadDevName
 *
 * Description      Looks for the device name in the security database for the
 *                  specified BD address.
 *
 * Returns          Pointer to the name or NULL
 *
 ******************************************************************************/
char* BTM_SecReadDevName(const RawAddress& bd_addr);

/*******************************************************************************
 *
 * Function         btm_sec_alloc_dev
 *
 * Description      Look for the record in the device database for the record
 *                  with specified address
 *
 * Returns          Pointer to the record or NULL
 *
 ******************************************************************************/
tBTM_SEC_DEV_REC* btm_sec_alloc_dev(const RawAddress& bd_addr);

/*******************************************************************************
 *
 * Function         btm_dev_support_role_switch
 *
 * Description      This function is called by the L2CAP to check if remote
 *                  device supports role switch
 *
 * Parameters:      bd_addr       - Address of the peer device
 *
 * Returns          true if device is known and role switch is supported
 *
 ******************************************************************************/
bool btm_dev_support_role_switch(const RawAddress& bd_addr);

/*******************************************************************************
 *
 * Function         btm_find_dev_by_handle
 *
 * Description      Look for the record in the device database for the record
 *                  with specified handle
 *
 * Returns          Pointer to the record or NULL
 *
 ******************************************************************************/
tBTM_SEC_DEV_REC* btm_find_dev_by_handle(uint16_t handle);

bool is_address_equal(void* data, void* context);

/*******************************************************************************
 *
 * Function         btm_find_dev
 *
 * Description      Look for the record in the device database for the record
 *                  with specified BD address
 *
 * Returns          Pointer to the record or NULL
 *
 ******************************************************************************/
tBTM_SEC_DEV_REC* btm_find_dev(const RawAddress& bd_addr);

/*******************************************************************************
 *
 * Function         btm_consolidate_dev
5**
 * Description      combine security records if identified as same peer
 *
 * Returns          none
 *
 ******************************************************************************/
void btm_consolidate_dev(tBTM_SEC_DEV_REC* p_target_rec);

/*******************************************************************************
 *
 * Function         btm_find_or_alloc_dev
 *
 * Description      Look for the record in the device database for the record
 *                  with specified BD address
 *
 * Returns          Pointer to the record or NULL
 *
 ******************************************************************************/
tBTM_SEC_DEV_REC* btm_find_or_alloc_dev(const RawAddress& bd_addr);

/*******************************************************************************
 *
 * Function         btm_sec_allocate_dev_rec
 *
 * Description      Attempts to allocate a new device record. If we have
 *                  exceeded the maximum number of allowable records to
 *                  allocate, the oldest record will be deleted to make room
 *                  for the new record.
 *
 * Returns          Pointer to the newly allocated record
 *
 ******************************************************************************/
tBTM_SEC_DEV_REC* btm_sec_allocate_dev_rec(void);

/*******************************************************************************
 *
 * Function         btm_get_bond_type_dev
 *
 * Description      Get the bond type for a device in the device database
 *                  with specified BD address
 *
 * Returns          The device bond type if known, otherwise BOND_TYPE_UNKNOWN
 *
 ******************************************************************************/
tBTM_SEC_DEV_REC::tBTM_BOND_TYPE btm_get_bond_type_dev(
    const RawAddress& bd_addr);

/*******************************************************************************
 *
 * Function         btm_set_bond_type_dev
 *
 * Description      Set the bond type for a device in the device database
 *                  with specified BD address
 *
 * Returns          true on success, otherwise false
 *
 ******************************************************************************/
bool btm_set_bond_type_dev(const RawAddress& bd_addr,
                           tBTM_SEC_DEV_REC::tBTM_BOND_TYPE bond_type);