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/******************************************************************************
*
* Copyright 2017 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 <array>
#include <cstring>
#include <string>
/** Bluetooth Address */
class RawAddress final {
public:
static constexpr unsigned int kLength = 6;
uint8_t address[kLength];
RawAddress() = default;
RawAddress(const uint8_t (&addr)[kLength]);
RawAddress(const std::array<uint8_t, kLength> array);
bool operator<(const RawAddress& rhs) const {
return (std::memcmp(address, rhs.address, sizeof(address)) < 0);
}
bool operator==(const RawAddress& rhs) const {
return (std::memcmp(address, rhs.address, sizeof(address)) == 0);
}
bool operator>(const RawAddress& rhs) const { return (rhs < *this); }
bool operator<=(const RawAddress& rhs) const { return !(*this > rhs); }
bool operator>=(const RawAddress& rhs) const { return !(*this < rhs); }
bool operator!=(const RawAddress& rhs) const { return !(*this == rhs); }
bool IsEmpty() const { return *this == kEmpty; }
// TODO (b/258090765): remove it and
// replace its usage with ToColonSepHexString
std::string ToString() const;
// Return a string representation in the form of
// hexadecimal string separated by colon (:), e.g.,
// "12:34:56:ab:cd:ef"
std::string ToColonSepHexString() const;
// same as ToColonSepHexString
std::string ToStringForLogging() const;
// Similar with ToColonHexString, ToRedactedStringForLogging returns a
// colon separated hexadecimal reprentation of the address but, with the
// leftmost 4 bytes masked with "xx", e.g., "xx:xx:xx:xx:ab:cd".
std::string ToRedactedStringForLogging() const;
// Converts |string| to RawAddress and places it in |to|. If |from| does
// not represent a Bluetooth address, |to| is not modified and this function
// returns false. Otherwise, it returns true.
static bool FromString(const std::string& from, RawAddress& to);
// Copies |from| raw Bluetooth address octets to the local object.
// Returns the number of copied octets - should be always RawAddress::kLength
size_t FromOctets(const uint8_t* from);
std::array<uint8_t, kLength> ToArray() const;
static bool IsValidAddress(const std::string& address);
static const RawAddress kEmpty; // 00:00:00:00:00:00
static const RawAddress kAny; // FF:FF:FF:FF:FF:FF
};
inline std::ostream& operator<<(std::ostream& os, const RawAddress& a) {
os << a.ToString();
return os;
}
template <>
struct std::hash<RawAddress> {
std::size_t operator()(const RawAddress& val) const {
static_assert(sizeof(uint64_t) >= RawAddress::kLength);
uint64_t int_addr = 0;
memcpy(reinterpret_cast<uint8_t*>(&int_addr), val.address,
RawAddress::kLength);
return std::hash<uint64_t>{}(int_addr);
}
};
#define BD_ADDR_LEN 6 /* Device address length */
inline void BDADDR_TO_STREAM(uint8_t*& p, const RawAddress& a) {
for (int ijk = 0; ijk < BD_ADDR_LEN; ijk++)
*(p)++ = (uint8_t)(a.address)[BD_ADDR_LEN - 1 - ijk];
}
inline void STREAM_TO_BDADDR(RawAddress& a, const uint8_t*& p) {
uint8_t* pbda = (uint8_t*)(a.address) + BD_ADDR_LEN - 1;
for (int ijk = 0; ijk < BD_ADDR_LEN; ijk++) *pbda-- = *(p)++;
}
// DEPRECATED
inline void STREAM_TO_BDADDR(RawAddress& a, uint8_t*& p) {
uint8_t* pbda = (uint8_t*)(a.address) + BD_ADDR_LEN - 1;
for (int ijk = 0; ijk < BD_ADDR_LEN; ijk++) *pbda-- = *(p)++;
}
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