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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_host_delegate.h"
#include "base/metrics/histogram_macros.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/safe_browsing/chrome_user_population_helper.h"
#include "chrome/browser/safe_browsing/client_side_detection_intelligent_scan_delegate_factory.h"
#include "chrome/browser/safe_browsing/client_side_detection_service_factory.h"
#include "chrome/browser/safe_browsing/safe_browsing_navigation_observer_manager_factory.h"
#include "chrome/browser/safe_browsing/safe_browsing_service.h"
#include "chrome/browser/safe_browsing/user_interaction_observer.h"
#include "chrome/browser/safe_browsing/verdict_cache_manager_factory.h"
#include "chrome/browser/signin/identity_manager_factory.h"
#include "components/prefs/pref_service.h"
#include "components/safe_browsing/content/browser/client_side_detection_host.h"
#include "components/safe_browsing/content/browser/client_side_detection_service.h"
#include "components/safe_browsing/content/browser/safe_browsing_navigation_observer_manager.h"
#include "components/safe_browsing/core/browser/db/database_manager.h"
#include "components/safe_browsing/core/browser/sync/safe_browsing_primary_account_token_fetcher.h"
#include "components/safe_browsing/core/browser/sync/sync_utils.h"
#include "components/signin/public/identity_manager/identity_manager.h"
#include "content/public/browser/global_routing_id.h"
namespace safe_browsing {
namespace {
// The number of user gestures we trace back for CSD attribution.
const int kCSDAttributionUserGestureLimitForExtendedReporting = 5;
} // namespace
// static
std::unique_ptr<ClientSideDetectionHost>
ChromeClientSideDetectionHostDelegate::CreateHost(content::WebContents* tab) {
content::BrowserContext* browser_context = tab->GetBrowserContext();
Profile* profile = Profile::FromBrowserContext(browser_context);
return ClientSideDetectionHost::Create(
tab, std::make_unique<ChromeClientSideDetectionHostDelegate>(tab),
ClientSideDetectionIntelligentScanDelegateFactory::GetForProfile(profile),
profile->GetPrefs(),
std::make_unique<SafeBrowsingPrimaryAccountTokenFetcher>(
IdentityManagerFactory::GetForProfile(profile)),
profile->IsOffTheRecord(),
base::BindRepeating(&safe_browsing::SyncUtils::IsPrimaryAccountSignedIn,
IdentityManagerFactory::GetForProfile(profile)));
}
ChromeClientSideDetectionHostDelegate::ChromeClientSideDetectionHostDelegate(
content::WebContents* web_contents)
: web_contents_(web_contents) {}
ChromeClientSideDetectionHostDelegate::
~ChromeClientSideDetectionHostDelegate() = default;
bool ChromeClientSideDetectionHostDelegate::
HasSafeBrowsingUserInteractionObserver() {
return SafeBrowsingUserInteractionObserver::FromWebContents(web_contents_);
}
PrefService* ChromeClientSideDetectionHostDelegate::GetPrefs() {
Profile* profile =
Profile::FromBrowserContext(web_contents_->GetBrowserContext());
return profile ? profile->GetPrefs() : nullptr;
}
scoped_refptr<SafeBrowsingDatabaseManager>
ChromeClientSideDetectionHostDelegate::GetSafeBrowsingDBManager() {
SafeBrowsingService* sb_service = g_browser_process->safe_browsing_service();
return sb_service ? sb_service->database_manager().get() : nullptr;
}
SafeBrowsingNavigationObserverManager* ChromeClientSideDetectionHostDelegate::
GetSafeBrowsingNavigationObserverManager() {
if (observer_manager_for_testing_) {
return observer_manager_for_testing_;
}
return SafeBrowsingNavigationObserverManagerFactory::GetForBrowserContext(
web_contents_->GetBrowserContext());
}
scoped_refptr<BaseUIManager>
ChromeClientSideDetectionHostDelegate::GetSafeBrowsingUIManager() {
SafeBrowsingService* sb_service = g_browser_process->safe_browsing_service();
return sb_service ? sb_service->ui_manager() : nullptr;
}
base::WeakPtr<ClientSideDetectionService>
ChromeClientSideDetectionHostDelegate::GetClientSideDetectionService() {
ClientSideDetectionService* service =
ClientSideDetectionServiceFactory::GetForProfile(
Profile::FromBrowserContext(web_contents_->GetBrowserContext()));
return service ? service->GetWeakPtr() : nullptr;
}
VerdictCacheManager* ChromeClientSideDetectionHostDelegate::GetCacheManager() {
return VerdictCacheManagerFactory::GetForProfile(
Profile::FromBrowserContext(web_contents_->GetBrowserContext()));
}
void ChromeClientSideDetectionHostDelegate::AddReferrerChain(
ClientPhishingRequest* verdict,
GURL current_url,
const content::GlobalRenderFrameHostId& current_outermost_main_frame_id) {
SafeBrowsingNavigationObserverManager* navigation_observer_manager =
GetSafeBrowsingNavigationObserverManager();
if (!navigation_observer_manager) {
return;
}
SafeBrowsingNavigationObserverManager::AttributionResult result =
navigation_observer_manager->IdentifyReferrerChainByEventURL(
current_url, SessionID::InvalidValue(),
current_outermost_main_frame_id,
kCSDAttributionUserGestureLimitForExtendedReporting,
verdict->mutable_referrer_chain());
UMA_HISTOGRAM_COUNTS_100("SafeBrowsing.ReferrerURLChainSize.CSDAttribution",
verdict->referrer_chain().size());
UMA_HISTOGRAM_ENUMERATION(
"SafeBrowsing.ReferrerAttributionResult.CSDAttribution", result,
SafeBrowsingNavigationObserverManager::ATTRIBUTION_FAILURE_TYPE_MAX);
// Determines how many recent navigation events to append to referrer
// chain if any.
size_t recent_navigations_to_collect =
CountOfRecentNavigationsToAppend(result);
navigation_observer_manager->AppendRecentNavigations(
recent_navigations_to_collect, verdict->mutable_referrer_chain());
}
size_t ChromeClientSideDetectionHostDelegate::CountOfRecentNavigationsToAppend(
SafeBrowsingNavigationObserverManager::AttributionResult result) {
auto* profile =
Profile::FromBrowserContext(web_contents_->GetBrowserContext());
return web_contents_ ? SafeBrowsingNavigationObserverManager::
CountOfRecentNavigationsToAppend(
profile, profile->GetPrefs(), result)
: 0u;
}
ChromeUserPopulation
ChromeClientSideDetectionHostDelegate::GetUserPopulation() {
Profile* profile =
Profile::FromBrowserContext(web_contents_->GetBrowserContext());
return ::safe_browsing::GetUserPopulationForProfile(profile);
}
void ChromeClientSideDetectionHostDelegate::GetInnerText(
HostInnerTextCallback callback) {
content_extraction::GetInnerText(
*web_contents_->GetPrimaryMainFrame(), std::nullopt,
base::BindOnce(&ChromeClientSideDetectionHostDelegate::OnInnerTextResult,
weak_factory_.GetWeakPtr(), std::move(callback)));
}
void ChromeClientSideDetectionHostDelegate::OnInnerTextResult(
HostInnerTextCallback callback,
std::unique_ptr<content_extraction::InnerTextResult> result) {
std::move(callback).Run(result ? result->inner_text : "");
}
} // namespace safe_browsing
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