| // 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 EXTENSIONS_BROWSER_UPDATER_UPDATE_INSTALL_SHIM_H_ |
| #define EXTENSIONS_BROWSER_UPDATER_UPDATE_INSTALL_SHIM_H_ |
| |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "base/files/file_path.h" |
| #include "base/macros.h" |
| #include "components/update_client/update_client.h" |
| |
| namespace base { |
| class DictionaryValue; |
| } |
| |
| namespace extensions { |
| |
| // A callback to implement the install of a new version of the extension. |
| // Takes ownership of the directory at |temp_dir|. |
| using UpdateInstallShimCallback = |
| base::Callback<void(const std::string& extension_id, |
| const base::FilePath& temp_dir)>; |
| |
| // 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 UpdateInstallShim : public update_client::CrxInstaller { |
| public: |
| // 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. |
| UpdateInstallShim(std::string extension_id, |
| const base::FilePath& extension_root, |
| const UpdateInstallShimCallback& callback); |
| |
| // Called when an update attempt failed. |
| void OnUpdateError(int error) override; |
| |
| // This is called when a new version of an extension is unpacked at |
| // |unpack_path| and is ready for install. |
| bool Install(const base::DictionaryValue& manifest, |
| const base::FilePath& unpack_path) override; |
| |
| // This is called by the generic differential update code in the |
| // update_client to provide the path to an existing file in the current |
| // version of the extension, so that it can be copied (or serve as the input |
| // to diff-patching) with output going to the directory with the new version |
| // being staged on disk for install. |
| bool GetInstalledFile(const std::string& file, |
| base::FilePath* installed_file) override; |
| |
| // This method is not relevant to extension updating. |
| bool Uninstall() override; |
| |
| private: |
| friend class base::RefCountedThreadSafe<UpdateInstallShim>; |
| ~UpdateInstallShim() override; |
| |
| // Takes ownership of the directory at path |temp_dir|. |
| void RunCallbackOnUIThread(const base::FilePath& temp_dir); |
| |
| std::string extension_id_; |
| base::FilePath extension_root_; |
| UpdateInstallShimCallback callback_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UpdateInstallShim); |
| }; |
| |
| } // namespace extensions |
| |
| #endif // EXTENSIONS_BROWSER_UPDATER_UPDATE_INSTALL_SHIM_H_ |