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// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_UPDATE_CLIENT_CONFIGURATOR_H_
#define COMPONENTS_UPDATE_CLIENT_CONFIGURATOR_H_
#include <memory>
#include <string>
#include <vector>
#include "base/memory/ref_counted.h"
class GURL;
class PrefService;
namespace base {
class SequencedTaskRunner;
class Version;
}
namespace net {
class URLRequestContextGetter;
}
namespace update_client {
class OutOfProcessPatcher;
// Controls the component updater behavior.
// TODO(sorin): this class will be split soon in two. One class controls
// the behavior of the update client, and the other class controls the
// behavior of the component updater.
class Configurator : public base::RefCountedThreadSafe<Configurator> {
public:
// Delay in seconds from calling Start() to the first update check.
virtual int InitialDelay() const = 0;
// Delay in seconds to every subsequent update check. 0 means don't check.
virtual int NextCheckDelay() const = 0;
// Delay in seconds from each task step. Used to smooth out CPU/IO usage.
virtual int StepDelay() const = 0;
// Minimum delta time in seconds before an on-demand check is allowed
// for the same component.
virtual int OnDemandDelay() const = 0;
// The time delay in seconds between applying updates for different
// components.
virtual int UpdateDelay() const = 0;
// The URLs for the update checks. The URLs are tried in order, the first one
// that succeeds wins.
virtual std::vector<GURL> UpdateUrl() const = 0;
// The URLs for pings. Returns an empty vector if and only if pings are
// disabled. Similarly, these URLs have a fall back behavior too.
virtual std::vector<GURL> PingUrl() const = 0;
// The ProdId is used as a prefix in some of the version strings which appear
// in the protocol requests. Possible values include "chrome", "chromecrx",
// "chromiumcrx", and "unknown".
virtual std::string GetProdId() const = 0;
// Version of the application. Used to compare the component manifests.
virtual base::Version GetBrowserVersion() const = 0;
// Returns the value we use for the "updaterchannel=" and "prodchannel="
// parameters. Possible return values include: "canary", "dev", "beta", and
// "stable".
virtual std::string GetChannel() const = 0;
// Returns the brand code or distribution tag that has been assigned to
// a partner. A brand code is a 4-character string used to identify
// installations that took place as a result of partner deals or website
// promotions.
virtual std::string GetBrand() const = 0;
// Returns the language for the present locale. Possible return values are
// standard tags for languages, such as "en", "en-US", "de", "fr", "af", etc.
virtual std::string GetLang() const = 0;
// Returns the OS's long name like "Windows", "Mac OS X", etc.
virtual std::string GetOSLongName() const = 0;
// Parameters added to each url request. It can be empty if none are needed.
// The return string must be safe for insertion as an attribute in an
// XML element.
virtual std::string ExtraRequestParams() const = 0;
// Provides a hint for the server to control the order in which multiple
// download urls are returned. The hint may or may not be honored in the
// response returned by the server.
// Returns an empty string if no policy is in effect.
virtual std::string GetDownloadPreference() const = 0;
// The source of contexts for all the url requests.
virtual net::URLRequestContextGetter* RequestContext() const = 0;
// Returns a new out of process patcher. May be NULL for implementations
// that patch in-process.
virtual scoped_refptr<update_client::OutOfProcessPatcher>
CreateOutOfProcessPatcher() const = 0;
// True means that this client can handle delta updates.
virtual bool EnabledDeltas() const = 0;
// True if component updates are enabled. Updates for all components are
// enabled by default. This method allows enabling or disabling
// updates for certain components such as the plugins. Updates for some
// components are always enabled and can't be disabled programatically.
virtual bool EnabledComponentUpdates() const = 0;
// True means that the background downloader can be used for downloading
// non on-demand components.
virtual bool EnabledBackgroundDownloader() const = 0;
// True if signing of update checks is enabled.
virtual bool EnabledCupSigning() const = 0;
// Gets a task runner to a blocking pool of threads suitable for worker jobs.
virtual scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner()
const = 0;
// Returns a PrefService that the update_client can use to store persistent
// update information. The PrefService must outlive the entire update_client,
// and be safe to access from the thread the update_client is constructed
// on.
// Returning null is safe and will disable any functionality that requires
// persistent storage.
virtual PrefService* GetPrefService() const = 0;
// Returns true if the Chrome is installed for the current user only, or false
// if Chrome is installed for all users on the machine. This function must be
// called only from a blocking pool thread, as it may access the file system.
virtual bool IsPerUserInstall() const = 0;
protected:
friend class base::RefCountedThreadSafe<Configurator>;
virtual ~Configurator() {}
};
} // namespace update_client
#endif // COMPONENTS_UPDATE_CLIENT_CONFIGURATOR_H_
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