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// Copyright 2013 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_SYNC_SERVICE_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_SYNC_SERVICE_H_
#include <map>
#include <memory>
#include <optional>
#include <string>
#include <vector>
#include "base/containers/flat_set.h"
#include "base/gtest_prod_util.h"
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/scoped_observation.h"
#include "base/version.h"
#include "chrome/browser/extensions/sync_bundle.h"
#include "components/keyed_service/core/keyed_service.h"
#include "components/sync/model/model_error.h"
#include "components/sync/model/syncable_service.h"
#include "extensions/browser/extension_prefs.h"
#include "extensions/browser/extension_prefs_observer.h"
#include "extensions/browser/extension_registry.h"
#include "extensions/browser/extension_registry_observer.h"
#include "extensions/browser/extension_system.h"
class Profile;
namespace extensions {
class Extension;
class ExtensionSet;
class ExtensionSyncData;
} // namespace extensions
// SyncableService implementation responsible for the APPS and EXTENSIONS data
// types, i.e. "proper" apps/extensions (not themes).
class ExtensionSyncService : public syncer::SyncableService,
public KeyedService,
public extensions::ExtensionRegistryObserver,
public extensions::ExtensionPrefsObserver {
public:
explicit ExtensionSyncService(Profile* profile);
ExtensionSyncService(const ExtensionSyncService&) = delete;
ExtensionSyncService& operator=(const ExtensionSyncService&) = delete;
~ExtensionSyncService() override;
// Convenience function to get the ExtensionSyncService for a BrowserContext.
static ExtensionSyncService* Get(content::BrowserContext* context);
// Notifies Sync (if needed) of a newly-installed extension or a change to
// an existing extension. Call this when you change an extension setting that
// is synced as part of ExtensionSyncData (e.g. incognito_enabled).
void SyncExtensionChangeIfNeeded(const extensions::Extension& extension);
// syncer::SyncableService implementation.
void WaitUntilReadyToSync(base::OnceClosure done) override;
std::optional<syncer::ModelError> MergeDataAndStartSyncing(
syncer::DataType type,
const syncer::SyncDataList& initial_sync_data,
std::unique_ptr<syncer::SyncChangeProcessor> sync_processor) override;
void StopSyncing(syncer::DataType type) override;
syncer::SyncDataList GetAllSyncDataForTesting(syncer::DataType type) const;
std::optional<syncer::ModelError> ProcessSyncChanges(
const base::Location& from_here,
const syncer::SyncChangeList& change_list) override;
base::WeakPtr<SyncableService> AsWeakPtr() override;
void SetSyncStartFlareForTesting(
const syncer::SyncableService::StartSyncFlare& flare);
// Special hack: There was a bug where themes incorrectly ended up in the
// syncer::EXTENSIONS type. This is for cleaning up the data. crbug.com/558299
// DO NOT USE FOR ANYTHING ELSE!
// TODO(crbug.com/41401013): This *should* be safe to remove now, but it's
// not.
void DeleteThemeDoNotUse(const extensions::Extension& theme);
private:
FRIEND_TEST_ALL_PREFIXES(TwoClientExtensionAppsSyncTest,
UnexpectedLaunchType);
FRIEND_TEST_ALL_PREFIXES(ExtensionDisabledGlobalErrorTest,
HigherPermissionsFromSync);
// extensions::ExtensionRegistryObserver:
void OnExtensionInstalled(content::BrowserContext* browser_context,
const extensions::Extension* extension,
bool is_update) override;
void OnExtensionUninstalled(content::BrowserContext* browser_context,
const extensions::Extension* extension,
extensions::UninstallReason reason) override;
// extensions::ExtensionPrefsObserver:
void OnExtensionDisableReasonsChanged(
const std::string& extension_id,
extensions::DisableReasonSet disabled_reasons) override;
void OnExtensionPrefsWillBeDestroyed(
extensions::ExtensionPrefs* prefs) override;
// Gets the SyncBundle for the given `type`.
extensions::SyncBundle* GetSyncBundle(syncer::DataType type);
const extensions::SyncBundle* GetSyncBundle(syncer::DataType type) const;
// Creates the ExtensionSyncData for the given app/extension.
extensions::ExtensionSyncData CreateSyncData(
const extensions::Extension& extension) const;
// Applies the given change coming in from the server to the local state.
void ApplySyncData(const extensions::ExtensionSyncData& extension_sync_data);
// Collects the ExtensionSyncData for all installed apps or extensions.
std::vector<extensions::ExtensionSyncData> GetLocalSyncDataList(
syncer::DataType type) const;
// Helper for GetLocalSyncDataList.
void FillSyncDataList(
const extensions::ExtensionSet& extensions,
syncer::DataType type,
std::vector<extensions::ExtensionSyncData>* sync_data_list) const;
// Returns if the extension corresponding to the given `extension_sync_data`
// should be promoted to an account extension, or false if there is no
// corresponding extension.
// Note that this is used if only the account extension state needs to be set.
bool ShouldPromoteToAccountExtension(
const extensions::ExtensionSyncData& extension_sync_data) const;
// Returns if the given `extension` should receive and apply updates from
// incoming sync data. This does not necessarily mean the extension can be
// uploaded to sync (ShouldSync returns false).
bool ShouldReceiveSyncData(const extensions::Extension& extension) const;
// Returns if the given `extension` should be synced by this class (i.e. it
// can be uploaded to the sync server).
bool ShouldSync(const extensions::Extension& extension) const;
// Returns true if the given `extension_id` corresponds to an item that has
// migrated to a pre-installed web app.
bool IsMigratingPreinstalledWebApp(
const extensions::ExtensionId& extension_id);
// The normal profile associated with this ExtensionSyncService.
raw_ptr<Profile> profile_;
raw_ptr<extensions::ExtensionSystem> system_;
base::ScopedObservation<extensions::ExtensionRegistry,
extensions::ExtensionRegistryObserver>
registry_observation_{this};
base::ScopedObservation<extensions::ExtensionPrefs,
extensions::ExtensionPrefsObserver>
prefs_observation_{this};
// When this is set to true, any incoming updates (from the observers as well
// as from explicit SyncExtensionChangeIfNeeded calls) are ignored. This is
// set during ApplySyncData, so that ExtensionSyncService doesn't end up
// notifying itself while applying sync changes.
bool ignore_updates_;
extensions::SyncBundle app_sync_bundle_;
extensions::SyncBundle extension_sync_bundle_;
// Map from extension id to pending update data. Used for two things:
// - To send the new version back to the sync server while we're waiting for
// an extension to update.
// - For re-enables, to defer granting permissions until the version matches.
struct PendingUpdate;
std::map<std::string, PendingUpdate> pending_updates_;
// Run()ning tells sync to try and start soon, because syncable changes
// have started happening. It will cause sync to call us back
// asynchronously via MergeDataAndStartSyncing as soon as possible.
SyncableService::StartSyncFlare flare_;
// Caches the set of Chrome app IDs undergoing migration to web apps because
// it is expensive to generate every time (multiple SkBitmap copies).
std::optional<base::flat_set<std::string>>
migrating_default_chrome_app_ids_cache_;
base::WeakPtrFactory<ExtensionSyncService> weak_ptr_factory_{this};
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_SYNC_SERVICE_H_
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