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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_ASH_SETTINGS_ABOUT_FLAGS_H_
#define CHROME_BROWSER_ASH_SETTINGS_ABOUT_FLAGS_H_
#include <map>
#include "base/memory/raw_ptr.h"
#include "components/webui/flags/pref_service_flags_storage.h"
class PrefService;
namespace base {
class CommandLine;
}
namespace ownership {
class OwnerSettingsService;
}
namespace ash {
namespace about_flags {
// Implements the FlagsStorage interface for the owner flags. It inherits from
// PrefServiceFlagsStorage but extends it with storing the flags in the signed
// device settings as well which effectively applies them to the Chrome OS login
// screen as well.
class OwnerFlagsStorage : public ::flags_ui::PrefServiceFlagsStorage {
public:
OwnerFlagsStorage(PrefService* prefs,
ownership::OwnerSettingsService* owner_settings_service);
~OwnerFlagsStorage() override;
bool SetFlags(const std::set<std::string>& flags) override;
private:
raw_ptr<ownership::OwnerSettingsService, DanglingUntriaged>
owner_settings_service_;
};
// FlagsStorage implementation for Chrome OS startup. It is backed by a set of
// flags that are provided at initialization time. Functions other than
// GetFlags() are implemented as no-ops.
class ReadOnlyFlagsStorage : public ::flags_ui::FlagsStorage {
public:
ReadOnlyFlagsStorage(
const std::set<std::string>& flags,
const std::map<std::string, std::string>& origin_list_flags);
// Parses flags specified in the --feature-flags and
// --feature-flags-origin-list command line switches. This is used by Chrome
// OS to pass flags configuration from session_manager to Chrome on startup.
explicit ReadOnlyFlagsStorage(base::CommandLine* command_line);
~ReadOnlyFlagsStorage() override;
// ::flags_ui::FlagsStorage:
std::set<std::string> GetFlags() const override;
bool SetFlags(const std::set<std::string>& flags) override;
void CommitPendingWrites() override;
std::string GetOriginListFlag(
const std::string& internal_entry_name) const override;
void SetOriginListFlag(const std::string& internal_entry_name,
const std::string& origin_list_value) override;
std::string GetStringFlag(
const std::string& internal_entry_name) const override;
void SetStringFlag(const std::string& internal_entry_name,
const std::string& string_value) override;
private:
std::set<std::string> flags_;
std::map<std::string, std::string> origin_list_flags_;
};
// A helper class to update Chrome OS session manager feature flags
// configuration from a provided FlagsStorage instance. This is meant to be used
// in the code paths that restart the browser to apply a different set of flags.
class FeatureFlagsUpdate {
public:
FeatureFlagsUpdate(const ::flags_ui::FlagsStorage& flags_storage,
PrefService* profile_prefs);
~FeatureFlagsUpdate();
// Checks whether the flags configuration specified in |cmdline| is different.
// |flags_difference| is filled in to indicate which flags differ.
bool DiffersFromCommandLine(base::CommandLine* cmdline,
std::set<std::string>* flags_difference);
// Updates session_manager with the flags configuration via D-Bus.
void UpdateSessionManager();
private:
static void ApplyUserPolicyToFlags(PrefService* user_profile_prefs,
std::set<std::string>* flags);
std::set<std::string> flags_;
std::map<std::string, std::string> origin_list_flags_;
};
} // namespace about_flags
} // namespace ash
#endif // CHROME_BROWSER_ASH_SETTINGS_ABOUT_FLAGS_H_
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