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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef EXTENSIONS_BROWSER_UPDATER_EXTENSION_INSTALLER_H_
#define EXTENSIONS_BROWSER_UPDATER_EXTENSION_INSTALLER_H_
#include <memory>
#include <optional>
#include <string>
#include "base/files/file_path.h"
#include "base/functional/callback.h"
#include "components/update_client/update_client.h"
#include "extensions/common/extension_id.h"
namespace extensions {
// This class is used as a shim between the components::update_client and
// extensions code, to help the generic update_client code prepare and then
// install an updated version of an extension. Because the update_client code
// doesn't have the notion of extension ids, we use instances of this class to
// map an install request back to the original update check for a given
// extension.
class ExtensionInstaller : public update_client::CrxInstaller {
public:
using UpdateClientCallback = update_client::CrxInstaller::Callback;
// A callback to implement the install of a new version of the extension.
// Takes ownership of the directory at |unpacked_dir|.
using ExtensionInstallerCallback = base::RepeatingCallback<void(
const ExtensionId& extension_id,
const std::string& public_key,
const base::FilePath& unpacked_dir,
bool install_immediately,
UpdateClientCallback update_client_callback)>;
// This method takes the id and root directory for an extension we're doing
// an update check for, as well as a callback to call if we get a new version
// of it to install.
ExtensionInstaller(ExtensionId extension_id,
const base::FilePath& extension_root,
bool install_immediately,
ExtensionInstallerCallback extension_installer_callback);
ExtensionInstaller(const ExtensionInstaller&) = delete;
ExtensionInstaller& operator=(const ExtensionInstaller&) = delete;
// update_client::CrxInstaller::
void OnUpdateError(int error) override;
// This function is executed by the component update client, which runs on a
// blocking thread with background priority.
// |update_client_callback| is expected to be called on a UI thread.
void Install(const base::FilePath& unpack_path,
const std::string& public_key,
std::unique_ptr<InstallParams> install_params,
ProgressCallback progress_callback,
UpdateClientCallback update_client_callback) override;
std::optional<base::FilePath> GetInstalledFile(
const std::string& file) override;
bool Uninstall() override;
// For unit tests.
bool install_immediately() const { return install_immediately_; }
private:
friend class base::RefCountedThreadSafe<ExtensionInstaller>;
~ExtensionInstaller() override;
ExtensionId extension_id_;
base::FilePath extension_root_;
bool install_immediately_;
ExtensionInstallerCallback extension_installer_callback_;
};
} // namespace extensions
#endif // EXTENSIONS_BROWSER_UPDATER_EXTENSION_INSTALLER_H_
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