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115 lines
3.6 KiB
C
115 lines
3.6 KiB
C
/*
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* Copyright (C) 2011-2012 BlueKitchen GmbH
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the copyright holders nor the names of
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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* 4. Any redistribution, use, or modification is done solely for
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* personal benefit and not for any commercial purpose or for
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* monetary gain.
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*
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* THIS SOFTWARE IS PROVIDED BY MATTHIAS RINGWALD AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS
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* RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* Please inquire about commercial licensing options at contact@bluekitchen-gmbh.com
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*
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*/
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#pragma once
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#include <btstack/utils.h>
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#if defined __cplusplus
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extern "C" {
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#endif
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/**
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A Central Device DB is only required for signed writes
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Per bonded device, it stores the Identity Resolving Key (IRK), the Connection Signature Resolving Key (CSRK)
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and the last used counter
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The IRK is necessary to identify a device that uses private addresses
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The CSRK is used to generate the signatur on the remote device and is needed to verify the signature itself
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The Counter is necessary to prevent reply attacks
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*/
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// Central Device db interface
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/**
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* @brief init
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*/
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void central_device_db_init();
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/**
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* @brief add device to db
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* @param addr_type, address of the device
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* @param irk and csrk of the device
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* @returns index if successful, -1 otherwise
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*/
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int central_device_db_add(int addr_type, bd_addr_t addr, sm_key_t irk, sm_key_t csrk);
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/**
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* @brief get number of devices in db for enumeration
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* @returns number of device in db
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*/
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int central_device_db_count(void);
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/**
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* @brief get device information: addr type and address needed to identify device
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* @param index
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* @param addr_type, address of the device as output
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* @param irk of the device
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*/
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void central_device_db_info(int index, int * addr_type, bd_addr_t addr, sm_key_t irk);
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/**
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* @brief get signing key for this device
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* @param index
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* @param signing key as output
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*/
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void central_device_db_csrk(int index, sm_key_t csrk);
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/**
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* @brief query last used/seen signing counter
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* @param index
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* @returns next expected counter, 0 after devices was added
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*/
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uint32_t central_device_db_counter_get(int index);
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/**
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* @brief update signing counter
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* @param index
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* @param counter to store
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*/
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void central_device_db_counter_set(int index, uint32_t counter);
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/**
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* @brief free device
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* @param index
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*/
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void central_device_db_remove(int index);
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