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/*
* 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.
*/
#pragma once
#include <optional>
#include <string>
#include <unordered_set>
#include "crypto_toolbox/crypto_toolbox.h"
#include "hci/hci_packets.h"
#include "storage/config_cache.h"
#include "storage/config_cache_helper.h"
#include "storage/device.h"
namespace bluetooth {
namespace storage {
class LeDevice {
public:
LeDevice(ConfigCache* config, ConfigCache* memory_only_config, std::string section);
// for move
LeDevice(LeDevice&& other) noexcept = default;
LeDevice& operator=(LeDevice&& other) noexcept = default;
// for copy
LeDevice(const LeDevice& other) noexcept = default;
LeDevice& operator=(const LeDevice& other) noexcept = default;
// operators
bool operator==(const LeDevice& other) const {
return config_ == other.config_ && memory_only_config_ == other.memory_only_config_ && section_ == other.section_;
}
bool operator!=(const LeDevice& other) const {
return !(*this == other);
}
bool operator<(const LeDevice& other) const {
return config_ < other.config_ && memory_only_config_ < other.memory_only_config_ && section_ < other.section_;
}
bool operator>(const LeDevice& rhs) const {
return (rhs < *this);
}
bool operator<=(const LeDevice& rhs) const {
return !(*this > rhs);
}
bool operator>=(const LeDevice& rhs) const {
return !(*this < rhs);
}
// Get the parent device
Device Parent();
// For logging purpose only, you can't get a LeDevice object from parsing a std::string
std::string ToLogString() const;
// Return true if device has a link key in one of |kLinkKeyProperties|
bool IsPaired() const;
// Property names that correspond to a link key used in Bluetooth LE device
static const std::unordered_set<std::string_view> kLinkKeyProperties;
private:
ConfigCache* config_;
ConfigCache* memory_only_config_;
std::string section_;
friend std::hash<LeDevice>;
public:
// Get LE address type of the key address
GENERATE_PROPERTY_GETTER_SETTER_REMOVER(AddressType, hci::AddressType, "AddrType");
// IRK + Identity Address Type + Identity Address
GENERATE_PROPERTY_GETTER_SETTER_REMOVER(PeerId, std::string, "LE_KEY_PID");
// LTK + RAND + EDIV + Security Level + Key Length
GENERATE_PROPERTY_GETTER_SETTER_REMOVER(PeerEncryptionKeys, std::string, "LE_KEY_PENC");
// counter + CSRK (connection signature resolving key) + security level
GENERATE_PROPERTY_GETTER_SETTER_REMOVER(PeerSignatureResolvingKeys, std::string, "LE_KEY_PCSRK");
GENERATE_PROPERTY_GETTER_SETTER_REMOVER(LegacyPseudoAddress, hci::Address, "LeLegacyPseudoAddr");
};
} // namespace storage
} // namespace bluetooth
namespace std {
template <>
struct hash<bluetooth::storage::LeDevice> {
std::size_t operator()(const bluetooth::storage::LeDevice& val) const noexcept {
std::size_t pointer_hash_1 = std::hash<bluetooth::storage::ConfigCache*>{}(val.config_);
std::size_t pointer_hash_2 = std::hash<bluetooth::storage::ConfigCache*>{}(val.config_);
std::size_t addr_hash = std::hash<std::string>{}(val.section_);
return addr_hash ^ (pointer_hash_1 << 1) ^ (pointer_hash_2 << 2);
}
};
} // namespace std
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