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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/device_metadata_fetcher.h"
#include "ash/constants/ash_features.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/repository/unauthenticated_http_fetcher.h"
#include "base/base64.h"
#include "base/compiler_specific.h"
#include "base/strings/stringprintf.h"
#include "components/cross_device/logging/logging.h"
#include "google_apis/google_api_keys.h"
#include "net/traffic_annotation/network_traffic_annotation.h"
#include "url/gurl.h"
namespace {
const char kGetObservedDeviceUrl[] =
"https://nearbydevices-pa.googleapis.com/v1/device/"
"%d?key=%s&mode=%s&alt=proto";
const char kReleaseMode[] = "MODE_RELEASE";
const char kDebugMode[] = "MODE_DEBUG";
const net::NetworkTrafficAnnotationTag kTrafficAnnotation =
net::DefineNetworkTrafficAnnotation("fast_pair_device_metadata_fetcher", R"(
semantics {
sender: "Fast Pair repository access"
description:
"Retrieves details about bluetooth devices that have been "
"discovered in range."
trigger: "Eligible bluetooth device is in range."
data:
"Details about a bluetooth peripheral, including name and picture."
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. "
chrome_policy {
FastPairEnabled {
FastPairEnabled: false
}
}
})");
} // namespace
namespace ash {
namespace quick_pair {
DeviceMetadataFetcher::DeviceMetadataFetcher()
: http_fetcher_(
std::make_unique<UnauthenticatedHttpFetcher>(kTrafficAnnotation)) {}
DeviceMetadataFetcher::DeviceMetadataFetcher(
std::unique_ptr<HttpFetcher> http_fetcher)
: http_fetcher_(std::move(http_fetcher)) {}
DeviceMetadataFetcher::~DeviceMetadataFetcher() = default;
void DeviceMetadataFetcher::LookupDeviceId(int id,
GetObservedDeviceCallback callback) {
const char* mode;
if (features::IsFastPairDebugMetadataEnabled()) {
CD_LOG(INFO, Feature::FP) << __func__ << ": Fetching DEBUG_MODE metadata.";
mode = kDebugMode;
} else {
mode = kReleaseMode;
}
GURL url = GURL(base::StringPrintf(kGetObservedDeviceUrl, id,
google_apis::GetAPIKey().c_str(), mode));
http_fetcher_->ExecuteGetRequest(
url, base::BindOnce(&DeviceMetadataFetcher::OnFetchComplete,
weak_ptr_factory_.GetWeakPtr(), std::move(callback)));
}
void DeviceMetadataFetcher::LookupHexDeviceId(
const std::string& hex_id,
GetObservedDeviceCallback callback) {
int id = UNSAFE_TODO(std::strtol(hex_id.c_str(), nullptr, 16));
LookupDeviceId(id, std::move(callback));
}
void DeviceMetadataFetcher::OnFetchComplete(
GetObservedDeviceCallback callback,
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) {
CD_LOG(WARNING, Feature::FP) << __func__ << "Unable to make request.";
std::move(callback).Run(std::nullopt, /*has_retryable_error=*/true);
return;
}
RecordDeviceMetadataFetchResult(*http_result);
if (!response_body) {
CD_LOG(WARNING, Feature::FP) << "No response.";
// Only suggest retrying when the actual request failed, otherwise there is
// no matching metadata for the given model_id.
std::move(callback).Run(std::nullopt,
/*has_retryable_error=*/!http_result->IsSuccess());
return;
}
nearby::fastpair::GetObservedDeviceResponse device_metadata;
if (!device_metadata.ParseFromString(*response_body)) {
CD_LOG(WARNING, Feature::FP) << "Failed to parse.";
std::move(callback).Run(std::nullopt, /*has_retryable_error=*/true);
return;
}
std::move(callback).Run(device_metadata, /*has_retryable_error=*/false);
}
} // namespace quick_pair
} // namespace ash
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