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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/safe_browsing/chrome_client_side_detection_service_delegate.h"
#include "base/containers/fixed_flat_set.h"
#include "base/metrics/histogram_functions.h"
#include "base/metrics/histogram_macros.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/policy/chrome_browser_policy_connector.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/safe_browsing/client_side_detection_service_factory.h"
#include "chrome/browser/safe_browsing/safe_browsing_service.h"
#include "components/optimization_guide/core/optimization_guide_features.h"
#include "components/prefs/pref_service.h"
#include "components/safe_browsing/content/browser/client_side_detection_service.h"
#include "components/safe_browsing/core/common/utils.h"
namespace {
// Currently, the following errors, which are used when a model may have been
// installed but not yet loaded, are treated as waitable.
static constexpr auto kWaitableReasons =
base::MakeFixedFlatSet<optimization_guide::OnDeviceModelEligibilityReason>({
optimization_guide::OnDeviceModelEligibilityReason::
kConfigNotAvailableForFeature,
optimization_guide::OnDeviceModelEligibilityReason::kModelToBeInstalled,
optimization_guide::OnDeviceModelEligibilityReason::
kSafetyModelNotAvailable,
optimization_guide::OnDeviceModelEligibilityReason::
kLanguageDetectionModelNotAvailable,
});
} // namespace
void LogOnDeviceModelDownloadSuccess(bool success) {
base::UmaHistogramBoolean("SBClientPhishing.OnDeviceModelDownloadSuccess",
success);
}
namespace safe_browsing {
ChromeClientSideDetectionServiceDelegate::
ChromeClientSideDetectionServiceDelegate(Profile* profile)
: profile_(profile) {}
ChromeClientSideDetectionServiceDelegate::
~ChromeClientSideDetectionServiceDelegate() {
StopListeningToOnDeviceModelUpdate();
}
PrefService* ChromeClientSideDetectionServiceDelegate::GetPrefs() {
if (profile_) {
return profile_->GetPrefs();
}
return nullptr;
}
scoped_refptr<network::SharedURLLoaderFactory>
ChromeClientSideDetectionServiceDelegate::GetURLLoaderFactory() {
if (profile_) {
return profile_->GetURLLoaderFactory();
}
return nullptr;
}
scoped_refptr<network::SharedURLLoaderFactory>
ChromeClientSideDetectionServiceDelegate::GetSafeBrowsingURLLoaderFactory() {
if (g_browser_process->safe_browsing_service()) {
return g_browser_process->safe_browsing_service()->GetURLLoaderFactory(
profile_);
}
return nullptr;
}
bool ChromeClientSideDetectionServiceDelegate::ShouldSendModelToBrowserContext(
content::BrowserContext* context) {
return context == profile_;
}
void ChromeClientSideDetectionServiceDelegate::
StartListeningToOnDeviceModelUpdate() {
if (observing_on_device_model_availability_) {
return;
}
auto* opt_guide =
OptimizationGuideKeyedServiceFactory::GetForProfile(profile_);
if (!opt_guide) {
return;
}
using ::optimization_guide::SessionConfigParams;
SessionConfigParams config_params = SessionConfigParams{
.execution_mode = SessionConfigParams::ExecutionMode::kOnDeviceOnly,
};
std::unique_ptr<optimization_guide::OptimizationGuideModelExecutor::Session>
session = opt_guide->StartSession(
optimization_guide::ModelBasedCapabilityKey::kScamDetection,
config_params);
if (session) {
NotifyServiceOnDeviceModelAvailable();
} else {
observing_on_device_model_availability_ = true;
on_device_fetch_time_ = base::TimeTicks::Now();
opt_guide->AddOnDeviceModelAvailabilityChangeObserver(
optimization_guide::ModelBasedCapabilityKey::kScamDetection, this);
}
}
void ChromeClientSideDetectionServiceDelegate::
StopListeningToOnDeviceModelUpdate() {
if (!observing_on_device_model_availability_) {
return;
}
auto* opt_guide =
OptimizationGuideKeyedServiceFactory::GetForProfile(profile_);
if (!opt_guide) {
return;
}
observing_on_device_model_availability_ = false;
opt_guide->RemoveOnDeviceModelAvailabilityChangeObserver(
optimization_guide::ModelBasedCapabilityKey::kScamDetection, this);
}
void ChromeClientSideDetectionServiceDelegate::OnDeviceModelAvailabilityChanged(
optimization_guide::ModelBasedCapabilityKey feature,
optimization_guide::OnDeviceModelEligibilityReason reason) {
if (!observing_on_device_model_availability_ ||
feature != optimization_guide::ModelBasedCapabilityKey::kScamDetection) {
return;
}
if (kWaitableReasons.contains(reason)) {
return;
}
if (reason == optimization_guide::OnDeviceModelEligibilityReason::kSuccess) {
base::UmaHistogramLongTimes("SBClientPhishing.OnDeviceModelFetchTime",
base::TimeTicks::Now() - on_device_fetch_time_);
NotifyServiceOnDeviceModelAvailable();
} else {
LogOnDeviceModelDownloadSuccess(false);
}
}
void ChromeClientSideDetectionServiceDelegate::
NotifyServiceOnDeviceModelAvailable() {
LogOnDeviceModelDownloadSuccess(true);
ClientSideDetectionService* csd_service =
ClientSideDetectionServiceFactory::GetForProfile(profile_);
// This can be null in unit tests.
if (csd_service) {
csd_service->NotifyOnDeviceModelAvailable();
}
}
std::unique_ptr<optimization_guide::OptimizationGuideModelExecutor::Session>
ChromeClientSideDetectionServiceDelegate::GetModelExecutorSession() {
auto* opt_guide =
OptimizationGuideKeyedServiceFactory::GetForProfile(profile_);
if (!opt_guide) {
return nullptr;
}
using ::optimization_guide::SessionConfigParams;
SessionConfigParams config_params = SessionConfigParams{
.execution_mode = SessionConfigParams::ExecutionMode::kOnDeviceOnly,
.logging_mode = SessionConfigParams::LoggingMode::kDefault,
};
return opt_guide->StartSession(
optimization_guide::ModelBasedCapabilityKey::kScamDetection,
config_params);
}
void ChromeClientSideDetectionServiceDelegate::
LogOnDeviceModelEligibilityReason() {
auto* opt_guide =
OptimizationGuideKeyedServiceFactory::GetForProfile(profile_);
if (!opt_guide) {
return;
}
optimization_guide::OnDeviceModelEligibilityReason eligibility =
opt_guide->GetOnDeviceModelEligibility(
optimization_guide::ModelBasedCapabilityKey::kScamDetection);
base::UmaHistogramEnumeration(
"SBClientPhishing.OnDeviceModelEligibilityReasonAtInquiryFailure",
eligibility);
}
} // namespace safe_browsing
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