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// Copyright 2017 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/url_checker_delegate_impl.h"
#include <algorithm>
#include "base/feature_list.h"
#include "base/functional/bind.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/preloading/prefetch/no_state_prefetch/chrome_no_state_prefetch_contents_delegate.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/profiles/profile_io_data.h"
#include "chrome/browser/safe_browsing/user_interaction_observer.h"
#include "components/no_state_prefetch/browser/no_state_prefetch_contents.h"
#include "components/no_state_prefetch/common/no_state_prefetch_final_status.h"
#include "components/safe_browsing/buildflags.h"
#include "components/safe_browsing/content/browser/content_unsafe_resource_util.h"
#include "components/safe_browsing/content/browser/triggers/suspicious_site_trigger.h"
#include "components/safe_browsing/content/browser/ui_manager.h"
#include "components/safe_browsing/core/browser/db/database_manager.h"
#include "components/safe_browsing/core/browser/db/v4_protocol_manager_util.h"
#include "components/safe_browsing/core/common/features.h"
#include "components/safe_browsing/core/common/safe_browsing_prefs.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/web_contents.h"
#include "services/network/public/cpp/features.h"
#if BUILDFLAG(IS_ANDROID)
#include "chrome/browser/android/customtabs/client_data_header_web_contents_observer.h"
#include "chrome/browser/android/tab_android.h"
#endif
namespace safe_browsing {
namespace {
// Destroys the NoStatePrefetch contents associated with the web_contents, if
// any.
void DestroyNoStatePrefetchContents(
content::WebContents::OnceGetter web_contents_getter) {
content::WebContents* web_contents = std::move(web_contents_getter).Run();
if (web_contents) {
prerender::NoStatePrefetchContents* no_state_prefetch_contents =
prerender::ChromeNoStatePrefetchContentsDelegate::FromWebContents(
web_contents);
if (no_state_prefetch_contents) {
no_state_prefetch_contents->Destroy(
prerender::FINAL_STATUS_SAFE_BROWSING);
}
}
}
void CreateSafeBrowsingUserInteractionObserver(
const security_interstitials::UnsafeResource& resource,
scoped_refptr<SafeBrowsingUIManager> ui_manager) {
content::WebContents* web_contents =
unsafe_resource_util::GetWebContentsForResource(resource);
// Don't delay the interstitial for prerender pages.
if (!web_contents ||
prerender::ChromeNoStatePrefetchContentsDelegate::FromWebContents(
web_contents)) {
ui_manager->StartDisplayingBlockingPage(resource);
return;
}
#if BUILDFLAG(IS_ANDROID)
// Don't delay the interstitial for Chrome Custom Tabs.
auto* tab_android = TabAndroid::FromWebContents(web_contents);
if (tab_android && tab_android->IsCustomTab()) {
ui_manager->StartDisplayingBlockingPage(resource);
return;
}
#endif
SafeBrowsingUserInteractionObserver::CreateForWebContents(
web_contents, resource, ui_manager);
}
} // namespace
UrlCheckerDelegateImpl::UrlCheckerDelegateImpl(
scoped_refptr<SafeBrowsingDatabaseManager> database_manager,
scoped_refptr<SafeBrowsingUIManager> ui_manager)
: database_manager_(std::move(database_manager)),
ui_manager_(std::move(ui_manager)),
threat_types_(CreateSBThreatTypeSet({
// TODO(crbug.com/41385006): Enable on Android when list is available.
#if BUILDFLAG(SAFE_BROWSING_DB_LOCAL)
safe_browsing::SBThreatType::SB_THREAT_TYPE_SUSPICIOUS_SITE,
#endif
safe_browsing::SBThreatType::SB_THREAT_TYPE_URL_MALWARE,
safe_browsing::SBThreatType::SB_THREAT_TYPE_URL_PHISHING,
safe_browsing::SBThreatType::SB_THREAT_TYPE_URL_UNWANTED,
safe_browsing::SBThreatType::SB_THREAT_TYPE_BILLING})) {
}
UrlCheckerDelegateImpl::~UrlCheckerDelegateImpl() = default;
void UrlCheckerDelegateImpl::MaybeDestroyNoStatePrefetchContents(
content::WebContents::OnceGetter web_contents_getter) {
// Destroy the prefetch with FINAL_STATUS_SAFE_BROWSING.
// Keep a post task here to avoid possible reentrancy into safe browsing
// code if it is running on the UI thread.
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&DestroyNoStatePrefetchContents,
std::move(web_contents_getter)));
}
void UrlCheckerDelegateImpl::StartDisplayingBlockingPageHelper(
const security_interstitials::UnsafeResource& resource,
const std::string& method,
const net::HttpRequestHeaders& headers,
bool has_user_gesture) {
// Keep a post task here to avoid possible reentrancy into safe browsing
// code if it is running on the UI thread.
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE,
base::BindOnce(&SafeBrowsingUIManager::StartDisplayingBlockingPage,
ui_manager_, resource));
}
// Starts displaying the SafeBrowsing interstitial page.
void UrlCheckerDelegateImpl::
StartObservingInteractionsForDelayedBlockingPageHelper(
const security_interstitials::UnsafeResource& resource) {
// Keep a post task here to avoid possible reentrancy into safe browsing
// code if it is running on the UI thread.
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&CreateSafeBrowsingUserInteractionObserver,
resource, ui_manager_));
}
bool UrlCheckerDelegateImpl::IsUrlAllowlisted(const GURL& url) {
return false;
}
void UrlCheckerDelegateImpl::SetPolicyAllowlistDomains(
const std::vector<std::string>& allowlist_domains) {
allowlist_domains_ = allowlist_domains;
}
bool UrlCheckerDelegateImpl::ShouldSkipRequestCheck(
const GURL& original_url,
int frame_tree_node_id,
int render_process_id,
base::optional_ref<const base::UnguessableToken> render_frame_token,
bool originated_from_service_worker) {
// Check for whether the URL matches the Safe Browsing allowlist domains
// (a.k. a prefs::kSafeBrowsingAllowlistDomains).
return std::ranges::any_of(allowlist_domains_,
[&original_url](const std::string& domain) {
return original_url.DomainIs(domain);
});
}
void UrlCheckerDelegateImpl::NotifySuspiciousSiteDetected(
const base::RepeatingCallback<content::WebContents*()>&
web_contents_getter) {
// Keep a post task here to avoid possible reentrancy into safe browsing
// code if it is running on the UI thread.
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&NotifySuspiciousSiteTriggerDetected,
web_contents_getter));
}
void UrlCheckerDelegateImpl::SendUrlRealTimeAndHashRealTimeDiscrepancyReport(
std::unique_ptr<ClientSafeBrowsingReportRequest> report,
const base::RepeatingCallback<content::WebContents*()>&
web_contents_getter) {
ui_manager_->SendThreatDetails(web_contents_getter.Run()->GetBrowserContext(),
std::move(report));
}
bool UrlCheckerDelegateImpl::AreBackgroundHashRealTimeSampleLookupsAllowed(
const base::RepeatingCallback<content::WebContents*()>&
web_contents_getter) {
Profile* profile = Profile::FromBrowserContext(
web_contents_getter.Run()->GetBrowserContext());
return safe_browsing::IsEnhancedProtectionEnabled(*profile->GetPrefs());
}
const SBThreatTypeSet& UrlCheckerDelegateImpl::GetThreatTypes() {
return threat_types_;
}
SafeBrowsingDatabaseManager* UrlCheckerDelegateImpl::GetDatabaseManager() {
return database_manager_.get();
}
BaseUIManager* UrlCheckerDelegateImpl::GetUIManager() {
return ui_manager_.get();
}
} // namespace safe_browsing
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