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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ash/quick_pair/repository/fast_pair_repository.h"
#include "ash/quick_pair/common/logging.h"
#include "ash/quick_pair/repository/fast_pair/device_metadata_fetcher.h"
#include "ash/quick_pair/repository/fast_pair/fast_pair_image_decoder.h"
#include "chromeos/ash/services/quick_pair/public/cpp/account_key_filter.h"
#include "components/image_fetcher/core/image_fetcher.h"
#include "crypto/sha2.h"
#include "device/bluetooth/bluetooth_device.h"
#include "device/bluetooth/public/cpp/bluetooth_address.h"
namespace ash {
namespace quick_pair {
namespace {
constexpr int kBluetoothAddressSize = 6;
FastPairRepository* g_instance = nullptr;
FastPairRepository* g_test_instance = nullptr;
} // namespace
// static
FastPairRepository* FastPairRepository::Get() {
if (g_test_instance) {
return g_test_instance;
}
// This fails for component builds, however, production builds are not
// component builds and we have not seen any production crashes here. If
// crashes start appearing in production, we should re-evaluate the
// FastPairRepository setup.
CHECK(g_instance);
return g_instance;
}
// static
std::string FastPairRepository::GenerateSha256OfAccountKeyAndMacAddress(
const std::string& account_key,
const std::string& mac_address) {
std::vector<uint8_t> concat_bytes(account_key.begin(), account_key.end());
std::vector<uint8_t> mac_address_bytes(kBluetoothAddressSize);
device::ParseBluetoothAddress(mac_address, mac_address_bytes);
concat_bytes.insert(concat_bytes.end(), mac_address_bytes.begin(),
mac_address_bytes.end());
std::array<uint8_t, crypto::kSHA256Length> hashed =
crypto::SHA256Hash(concat_bytes);
return std::string(hashed.begin(), hashed.end());
}
// static
void FastPairRepository::SetInstance(FastPairRepository* instance) {
DCHECK(!g_instance || !instance);
g_instance = instance;
}
// static
void FastPairRepository::SetInstanceForTesting(FastPairRepository* instance) {
g_test_instance = instance;
}
FastPairRepository::FastPairRepository() = default;
FastPairRepository::~FastPairRepository() = default;
} // namespace quick_pair
} // namespace ash
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