| /* |
| * Copyright (C) 2016 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef APKASSETS_H_ |
| #define APKASSETS_H_ |
| |
| #include <memory> |
| #include <string> |
| |
| #include "android-base/macros.h" |
| #include "android-base/unique_fd.h" |
| |
| #include "androidfw/Asset.h" |
| #include "androidfw/AssetsProvider.h" |
| #include "androidfw/Idmap.h" |
| #include "androidfw/LoadedArsc.h" |
| #include "androidfw/misc.h" |
| |
| namespace android { |
| |
| // Holds an APK. |
| class ApkAssets { |
| public: |
| // Creates an ApkAssets from a path on device. |
| static std::unique_ptr<ApkAssets> Load(const std::string& path, |
| package_property_t flags = 0U); |
| |
| // Creates an ApkAssets from an open file descriptor. |
| static std::unique_ptr<ApkAssets> LoadFromFd(base::unique_fd fd, |
| const std::string& debug_name, |
| package_property_t flags = 0U, |
| off64_t offset = 0, |
| off64_t len = AssetsProvider::kUnknownLength); |
| |
| // Creates an ApkAssets from an AssetProvider. |
| // The ApkAssets will take care of destroying the AssetsProvider when it is destroyed. |
| static std::unique_ptr<ApkAssets> Load(std::unique_ptr<AssetsProvider> assets, |
| package_property_t flags = 0U); |
| |
| // Creates an ApkAssets from the given asset file representing a resources.arsc. |
| static std::unique_ptr<ApkAssets> LoadTable(std::unique_ptr<Asset> resources_asset, |
| std::unique_ptr<AssetsProvider> assets, |
| package_property_t flags = 0U); |
| |
| // Creates an ApkAssets from an IDMAP, which contains the original APK path, and the overlay |
| // data. |
| static std::unique_ptr<ApkAssets> LoadOverlay(const std::string& idmap_path, |
| package_property_t flags = 0U); |
| |
| // Path to the contents of the ApkAssets on disk. The path could represent an APk, a directory, |
| // or some other file type. |
| std::optional<std::string_view> GetPath() const; |
| |
| const std::string& GetDebugName() const; |
| |
| const AssetsProvider* GetAssetsProvider() const { |
| return assets_provider_.get(); |
| } |
| |
| // This is never nullptr. |
| const LoadedArsc* GetLoadedArsc() const { |
| return loaded_arsc_.get(); |
| } |
| |
| const LoadedIdmap* GetLoadedIdmap() const { |
| return loaded_idmap_.get(); |
| } |
| |
| bool IsLoader() const { |
| return (property_flags_ & PROPERTY_LOADER) != 0; |
| } |
| |
| bool IsOverlay() const { |
| return loaded_idmap_ != nullptr; |
| } |
| |
| // Returns whether the resources.arsc is allocated in RAM (not mmapped). |
| bool IsTableAllocated() const { |
| return resources_asset_ != nullptr && resources_asset_->isAllocated(); |
| } |
| |
| bool IsUpToDate() const; |
| |
| private: |
| static std::unique_ptr<ApkAssets> LoadImpl(std::unique_ptr<AssetsProvider> assets, |
| package_property_t property_flags, |
| std::unique_ptr<Asset> idmap_asset, |
| std::unique_ptr<LoadedIdmap> loaded_idmap); |
| |
| static std::unique_ptr<ApkAssets> LoadImpl(std::unique_ptr<Asset> resources_asset, |
| std::unique_ptr<AssetsProvider> assets, |
| package_property_t property_flags, |
| std::unique_ptr<Asset> idmap_asset, |
| std::unique_ptr<LoadedIdmap> loaded_idmap); |
| |
| ApkAssets(std::unique_ptr<Asset> resources_asset, |
| std::unique_ptr<LoadedArsc> loaded_arsc, |
| std::unique_ptr<AssetsProvider> assets, |
| package_property_t property_flags, |
| std::unique_ptr<Asset> idmap_asset, |
| std::unique_ptr<LoadedIdmap> loaded_idmap); |
| |
| std::unique_ptr<Asset> resources_asset_; |
| std::unique_ptr<LoadedArsc> loaded_arsc_; |
| |
| std::unique_ptr<AssetsProvider> assets_provider_; |
| package_property_t property_flags_ = 0U; |
| |
| std::unique_ptr<Asset> idmap_asset_; |
| std::unique_ptr<LoadedIdmap> loaded_idmap_; |
| }; |
| |
| } // namespace android |
| |
| #endif // APKASSETS_H_ |