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// Copyright 2022 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/footprints_fetcher_impl.h"
#include "ash/quick_pair/common/fast_pair/fast_pair_http_result.h"
#include "ash/quick_pair/common/fast_pair/fast_pair_metrics.h"
#include "ash/quick_pair/proto/fastpair.pb.h"
#include "ash/quick_pair/proto/fastpair_data.pb.h"
#include "ash/quick_pair/repository/oauth_http_fetcher.h"
#include "base/base64.h"
#include "base/json/json_reader.h"
#include "base/strings/stringprintf.h"
#include "components/cross_device/logging/logging.h"
#include "google_apis/gaia/gaia_constants.h"
#include "google_apis/google_api_keys.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "url/gurl.h"
namespace ash {
namespace quick_pair {
namespace {
const char kUserDevicesUrl[] =
"https://nearbydevices-pa.googleapis.com/v1/userdevices"
"?key=%s&alt=proto";
const char kUserDeleteDeviceUrl[] =
"https://nearbydevices-pa.googleapis.com/v1/userdevices/%s"
"?key=%s&alt=proto";
const net::PartialNetworkTrafficAnnotationTag kTrafficAnnotation =
net::DefinePartialNetworkTrafficAnnotation("fast_pair_footprints_request",
"oauth2_api_call_flow",
R"(
semantics {
sender: "Fast Pair repository access"
description:
"Retrieves and updates details about bluetooth devices which have "
"been paired with a user's account."
trigger:
"This request is sent at the start of a session."
data: "List of paired devices with metadata."
destination: GOOGLE_OWNED_SERVICE
}
policy {
cookies_allowed: NO
setting:
"You can enable or disable this feature by toggling on/off the "
"Fast Pair toggle in chrome://os-settings under 'Bluetooth'. The "
"feature is enabled by default. Fast Pair does not fetch data from "
"the repository if the user is not signed in."
chrome_policy {
FastPairEnabled {
FastPairEnabled: true
}
}
})");
std::unique_ptr<HttpFetcher> CreateHttpFetcher() {
return std::make_unique<OAuthHttpFetcher>(
kTrafficAnnotation, GaiaConstants::kNearbyDevicesOAuth2Scope);
}
GURL GetUserDevicesUrl() {
return GURL(
base::StringPrintf(kUserDevicesUrl, google_apis::GetAPIKey().c_str()));
}
GURL GetUserDeleteDeviceUrl(const std::string& hex_account_key) {
return GURL(base::StringPrintf(kUserDeleteDeviceUrl, hex_account_key.c_str(),
google_apis::GetAPIKey().c_str()));
}
} // namespace
FootprintsFetcherImpl::FootprintsFetcherImpl() = default;
FootprintsFetcherImpl::~FootprintsFetcherImpl() = default;
void FootprintsFetcherImpl::GetUserDevices(UserReadDevicesCallback callback) {
auto http_fetcher = CreateHttpFetcher();
auto* raw_http_fetcher = http_fetcher.get();
raw_http_fetcher->ExecuteGetRequest(
GetUserDevicesUrl(),
base::BindOnce(&FootprintsFetcherImpl::OnGetComplete,
weak_ptr_factory_.GetWeakPtr(), std::move(callback),
std::move(http_fetcher)));
}
void FootprintsFetcherImpl::OnGetComplete(
UserReadDevicesCallback callback,
std::unique_ptr<HttpFetcher> http_fetcher,
std::unique_ptr<std::string> response_body,
std::unique_ptr<FastPairHttpResult> http_result) {
CD_LOG(VERBOSE, Feature::FP)
<< __func__ << ": HTTP result: "
<< (http_result ? http_result->ToString() : "[null]");
if (http_result)
RecordFootprintsFetcherGetResult(*http_result);
if (!response_body) {
CD_LOG(WARNING, Feature::FP) << __func__ << ": No response.";
std::move(callback).Run(std::nullopt);
return;
}
nearby::fastpair::UserReadDevicesResponse devices;
if (!devices.ParseFromString(*response_body)) {
CD_LOG(WARNING, Feature::FP) << __func__ << ": Failed to parse.";
std::move(callback).Run(std::nullopt);
return;
}
CD_LOG(VERBOSE, Feature::FP)
<< __func__
<< ": Successfully retrived footprints data. Paired devices:";
for (const auto& info : devices.fast_pair_info()) {
if (info.has_device()) {
nearby::fastpair::StoredDiscoveryItem device;
if (device.ParseFromString(info.device().discovery_item_bytes())) {
CD_LOG(VERBOSE, Feature::FP) << device.title();
}
}
}
std::move(callback).Run(devices);
}
void FootprintsFetcherImpl::AddUserFastPairInfo(
nearby::fastpair::FastPairInfo info,
AddDeviceCallback callback) {
auto http_fetcher = CreateHttpFetcher();
auto* raw_http_fetcher = http_fetcher.get();
raw_http_fetcher->ExecutePostRequest(
GetUserDevicesUrl(), info.SerializeAsString(),
base::BindOnce(&FootprintsFetcherImpl::OnPostComplete,
weak_ptr_factory_.GetWeakPtr(), std::move(callback),
std::move(http_fetcher)));
}
void FootprintsFetcherImpl::OnPostComplete(
AddDeviceCallback callback,
std::unique_ptr<HttpFetcher> http_fetcher,
std::unique_ptr<std::string> response_body,
std::unique_ptr<FastPairHttpResult> http_result) {
CD_LOG(VERBOSE, Feature::FP)
<< __func__ << ": HTTP result: "
<< (http_result ? http_result->ToString() : "[null]");
if (http_result)
RecordFootprintsFetcherPostResult(*http_result);
if (!response_body) {
CD_LOG(WARNING, Feature::FP) << __func__ << ": No response.";
std::move(callback).Run(/*success=*/false);
return;
}
CD_LOG(VERBOSE, Feature::FP)
<< __func__ << ": Successfully saved new footprints data.";
std::move(callback).Run(/*success=*/true);
}
void FootprintsFetcherImpl::DeleteUserDevice(const std::string& hex_account_key,
DeleteDeviceCallback callback) {
CD_LOG(VERBOSE, Feature::FP)
<< __func__ << " Deleting user device for acc key " << hex_account_key;
auto http_fetcher = CreateHttpFetcher();
auto* raw_http_fetcher = http_fetcher.get();
raw_http_fetcher->ExecuteDeleteRequest(
GetUserDeleteDeviceUrl(hex_account_key),
base::BindOnce(&FootprintsFetcherImpl::OnDeleteComplete,
weak_ptr_factory_.GetWeakPtr(), std::move(callback),
std::move(http_fetcher)));
}
void FootprintsFetcherImpl::OnDeleteComplete(
DeleteDeviceCallback callback,
std::unique_ptr<HttpFetcher> http_fetcher,
std::unique_ptr<std::string> response_body,
std::unique_ptr<FastPairHttpResult> http_result) {
CD_LOG(VERBOSE, Feature::FP)
<< __func__ << ": HTTP result: "
<< (http_result ? http_result->ToString() : "[null]");
if (http_result)
RecordFootprintsFetcherDeleteResult(*http_result);
if (!response_body) {
CD_LOG(WARNING, Feature::FP) << __func__ << ": No response.";
std::move(callback).Run(/*success=*/false);
return;
}
CD_LOG(VERBOSE, Feature::FP)
<< __func__ << ": Successfully deleted footprints data.";
std::move(callback).Run(/*success=*/true);
}
} // namespace quick_pair
} // namespace ash
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