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// Copyright 2015 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_UPDATE_CLIENT_H_
#define COMPONENTS_UPDATE_CLIENT_UPDATE_CLIENT_H_
#include <stdint.h>
#include <string>
#include <vector>
#include "base/version.h"
namespace base {
class DictionaryValue;
class FilePath;
}
namespace update_client {
// Component specific installers must derive from this class and implement
// OnUpdateError() and Install(). A valid instance of this class must be
// given to ComponentUpdateService::RegisterComponent().
class ComponentInstaller {
public:
// Called by the component updater on the main thread when there was a
// problem unpacking or verifying the component. |error| is a non-zero
// value which is only meaningful to the component updater.
virtual void OnUpdateError(int error) = 0;
// Called by the component updater when a component has been unpacked
// and is ready to be installed. |manifest| contains the CRX manifest
// json dictionary and |unpack_path| contains the temporary directory
// with all the unpacked CRX files. This method may be called from
// a thread other than the main thread.
virtual bool Install(const base::DictionaryValue& manifest,
const base::FilePath& unpack_path) = 0;
// Set |installed_file| to the full path to the installed |file|. |file| is
// the filename of the file in this component's CRX. Returns false if this is
// not possible (the file has been removed or modified, or its current
// location is unknown). Otherwise, returns true.
virtual bool GetInstalledFile(const std::string& file,
base::FilePath* installed_file) = 0;
virtual ~ComponentInstaller() {}
};
// Describes a particular component that can be installed or updated. This
// structure is required to register a component with the component updater.
// |pk_hash| is the SHA256 hash of the component's public key. If the component
// is to be installed then version should be "0" or "0.0", else it should be
// the current version. |fingerprint|, and |name| are optional.
// |allow_background_download| specifies that the component can be background
// downloaded in some cases. The default for this value is |true| and the value
// can be overriden at the registration time. This is a temporary change until
// the issue 340448 is resolved.
struct CrxComponent {
std::vector<uint8_t> pk_hash;
ComponentInstaller* installer;
Version version;
std::string fingerprint;
std::string name;
bool allow_background_download;
CrxComponent();
~CrxComponent();
};
} // namespace update_client
#endif // COMPONENTS_UPDATE_CLIENT_UPDATE_CLIENT_H_
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