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// Copyright 2019 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/background_sync/periodic_background_sync_permission_context.h"
#include "base/feature_list.h"
#include "build/build_config.h"
#include "chrome/browser/content_settings/host_content_settings_map_factory.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/search_engines/template_url_service_factory.h"
#include "chrome/browser/webapps/installable/installable_utils.h"
#include "chrome/common/chrome_features.h"
#include "components/content_settings/core/browser/host_content_settings_map.h"
#include "components/search_engines/template_url.h"
#include "components/search_engines/template_url_service.h"
#include "content/public/browser/browser_thread.h"
#include "services/network/public/mojom/permissions_policy/permissions_policy_feature.mojom.h"
#include "url/origin.h"
#if BUILDFLAG(IS_ANDROID)
#include "chrome/browser/android/shortcut_helper.h"
#else
#include "chrome/browser/web_applications/proto/web_app_install_state.pb.h"
#include "chrome/browser/web_applications/web_app_install_manager.h"
#include "chrome/browser/web_applications/web_app_install_manager_observer.h"
#include "chrome/browser/web_applications/web_app_provider.h"
#include "chrome/browser/web_applications/web_app_registrar.h"
#endif
namespace features {
// If enabled, the installability criteria for granting PBS permission is
// dropped and the content setting is checked. This only applies if the
// requesting origin matches that of the browser's default search engine.
BASE_FEATURE(kPeriodicSyncPermissionForDefaultSearchEngine,
"PeriodicSyncPermissionForDefaultSearchEngine",
base::FEATURE_DISABLED_BY_DEFAULT);
} // namespace features
PeriodicBackgroundSyncPermissionContext::
PeriodicBackgroundSyncPermissionContext(
content::BrowserContext* browser_context)
: ContentSettingPermissionContextBase(
browser_context,
ContentSettingsType::PERIODIC_BACKGROUND_SYNC,
network::mojom::PermissionsPolicyFeature::kNotFound) {
#if !BUILDFLAG(IS_ANDROID)
auto* provider = web_app::WebAppProvider::GetForWebApps(
Profile::FromBrowserContext(browser_context));
if (provider) {
install_manager_observation_.Observe(&provider->install_manager());
}
#endif // !BUILDFLAG(IS_ANDROID)
}
PeriodicBackgroundSyncPermissionContext::
~PeriodicBackgroundSyncPermissionContext() = default;
bool PeriodicBackgroundSyncPermissionContext::IsPwaInstalled(
const GURL& origin) const {
// Because we're only passed the requesting origin from the permissions
// infrastructure, we can't match the scope of installed PWAs to the exact URL
// of the permission request. We instead look for any installed PWA for the
// requesting origin. With this logic, if there's already a PWA installed for
// google.com/travel, and a request to register Periodic Background Sync comes
// in from google.com/maps, this method will return true and registration will
// succeed, provided other required conditions are met.
return DoesOriginContainAnyInstalledWebApp(browser_context(), origin);
}
#if BUILDFLAG(IS_ANDROID)
bool PeriodicBackgroundSyncPermissionContext::IsTwaInstalled(
const GURL& origin) const {
return ShortcutHelper::DoesOriginContainAnyInstalledTrustedWebActivity(
origin);
}
#endif
GURL PeriodicBackgroundSyncPermissionContext::GetDefaultSearchEngineUrl()
const {
auto* template_url_service = TemplateURLServiceFactory::GetForProfile(
Profile::FromBrowserContext(browser_context()));
DCHECK(template_url_service);
const TemplateURL* default_search_engine =
template_url_service->GetDefaultSearchProvider();
return default_search_engine ? default_search_engine->GenerateSearchURL(
template_url_service->search_terms_data())
: GURL();
}
ContentSetting
PeriodicBackgroundSyncPermissionContext::GetContentSettingStatusInternal(
content::RenderFrameHost* render_frame_host,
const GURL& requesting_origin,
const GURL& embedding_origin) const {
DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
// TODO(crbug.com/397357113): PermissionStatus `change` event not triggered
// when TWA or PWA is installed or uninstalled on Android.
#if BUILDFLAG(IS_ANDROID)
if (IsTwaInstalled(requesting_origin))
return CONTENT_SETTING_ALLOW;
#endif
bool can_bypass_install_requirement =
base::FeatureList::IsEnabled(
features::kPeriodicSyncPermissionForDefaultSearchEngine) &&
url::IsSameOriginWith(GetDefaultSearchEngineUrl(), requesting_origin);
if (!can_bypass_install_requirement && !IsPwaInstalled(requesting_origin)) {
return CONTENT_SETTING_BLOCK;
}
// |requesting_origin| either has an installed PWA or matches the default
// search engine's origin. Check one-shot Background Sync content setting.
// Expected values are CONTENT_SETTING_BLOCK or CONTENT_SETTING_ALLOW.
auto* host_content_settings_map =
HostContentSettingsMapFactory::GetForProfile(browser_context());
DCHECK(host_content_settings_map);
auto content_setting = host_content_settings_map->GetContentSetting(
requesting_origin, embedding_origin,
ContentSettingsType::BACKGROUND_SYNC);
DCHECK(content_setting == CONTENT_SETTING_BLOCK ||
content_setting == CONTENT_SETTING_ALLOW);
return content_setting;
}
void PeriodicBackgroundSyncPermissionContext::DecidePermission(
std::unique_ptr<permissions::PermissionRequestData> request_data,
permissions::BrowserPermissionCallback callback) {
// The user should never be prompted to authorize Periodic Background Sync
// from PeriodicBackgroundSyncPermissionContext.
NOTREACHED();
}
void PeriodicBackgroundSyncPermissionContext::NotifyPermissionSet(
const permissions::PermissionRequestData& request_data,
permissions::BrowserPermissionCallback callback,
bool persist,
PermissionDecision decision,
bool is_final_decision) {
DCHECK(!persist);
DCHECK(is_final_decision);
permissions::ContentSettingPermissionContextBase::NotifyPermissionSet(
request_data, std::move(callback), persist, decision, is_final_decision);
}
void PeriodicBackgroundSyncPermissionContext::OnContentSettingChanged(
const ContentSettingsPattern& primary_pattern,
const ContentSettingsPattern& secondary_pattern,
ContentSettingsTypeSet content_type_set) {
if (!content_type_set.Contains(ContentSettingsType::BACKGROUND_SYNC) &&
!content_type_set.Contains(
ContentSettingsType::PERIODIC_BACKGROUND_SYNC)) {
return;
}
permissions::ContentSettingPermissionContextBase::OnContentSettingChanged(
primary_pattern, secondary_pattern,
ContentSettingsTypeSet(ContentSettingsType::PERIODIC_BACKGROUND_SYNC));
}
#if !BUILDFLAG(IS_ANDROID)
void PeriodicBackgroundSyncPermissionContext::OnWebAppInstalled(
const webapps::AppId& app_id) {
auto* provider = web_app::WebAppProvider::GetForWebApps(
Profile::FromBrowserContext(browser_context()));
if (provider) {
const auto& registrar = provider->registrar_unsafe();
// TODO(crbug.com/340952100): Evaluate call sites of IsInstallState for
// correctness.
if (registrar.GetInstallState(app_id) !=
web_app::proto::InstallState::INSTALLED_WITH_OS_INTEGRATION) {
return;
}
auto gurl = registrar.GetAppScope(app_id);
if (!gurl.is_valid()) {
return;
}
OnContentSettingChanged(
ContentSettingsPattern::FromURL(gurl),
ContentSettingsPattern::Wildcard(),
ContentSettingsTypeSet(ContentSettingsType::PERIODIC_BACKGROUND_SYNC));
}
}
void PeriodicBackgroundSyncPermissionContext::OnWebAppInstalledWithOsHooks(
const webapps::AppId& app_id) {
// TODO(crbug.com/340952100): Remove the method after the InstallState is
// saved in the database & available from OnWebAppInstalled.
OnWebAppInstalled(app_id);
}
void PeriodicBackgroundSyncPermissionContext::OnWebAppWillBeUninstalled(
const webapps::AppId& app_id) {
auto* provider = web_app::WebAppProvider::GetForWebApps(
Profile::FromBrowserContext(browser_context()));
if (provider) {
const auto& registrar = provider->registrar_unsafe();
auto gurl = registrar.GetAppScope(app_id);
if (!gurl.is_valid()) {
return;
}
app_id_origin_map_[app_id] = gurl;
}
}
void PeriodicBackgroundSyncPermissionContext::OnWebAppUninstalled(
const webapps::AppId& app_id,
webapps::WebappUninstallSource uninstall_source) {
if (app_id_origin_map_.find(app_id) != app_id_origin_map_.end()) {
auto gurl = app_id_origin_map_[app_id];
app_id_origin_map_.erase(app_id);
OnContentSettingChanged(
ContentSettingsPattern::FromURL(gurl),
ContentSettingsPattern::Wildcard(),
ContentSettingsTypeSet(ContentSettingsType::PERIODIC_BACKGROUND_SYNC));
}
}
void PeriodicBackgroundSyncPermissionContext::
OnWebAppInstallManagerDestroyed() {
install_manager_observation_.Reset();
app_id_origin_map_.clear();
}
#endif // !BUILDFLAG(IS_ANDROID)
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