| /* |
| * Copyright (C) 2017 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 ANDROID_VINTF_UTILS_H |
| #define ANDROID_VINTF_UTILS_H |
| |
| #include <dirent.h> |
| |
| #include <fstream> |
| #include <iostream> |
| #include <memory> |
| #include <sstream> |
| |
| #include <utils/Errors.h> |
| #include <vintf/RuntimeInfo.h> |
| #include <vintf/parse_xml.h> |
| |
| namespace android { |
| namespace vintf { |
| namespace details { |
| |
| // Return the file from the given location as a string. |
| // |
| // This class can be used to create a mock for overriding. |
| class FileFetcher { |
| public: |
| virtual ~FileFetcher() {} |
| status_t fetchInternal(const std::string& path, std::string& fetched, std::string* error) { |
| std::ifstream in; |
| |
| in.open(path); |
| if (!in.is_open()) { |
| if (error) { |
| *error = "Cannot open " + path; |
| } |
| return NAME_NOT_FOUND; |
| } |
| |
| std::stringstream ss; |
| ss << in.rdbuf(); |
| fetched = ss.str(); |
| |
| return OK; |
| } |
| virtual status_t fetch(const std::string& path, std::string& fetched, std::string* error) { |
| return fetchInternal(path, fetched, error); |
| } |
| virtual status_t fetch(const std::string& path, std::string& fetched) { |
| return fetchInternal(path, fetched, nullptr); |
| } |
| virtual status_t listFiles(const std::string& path, std::vector<std::string>* out, |
| std::string* error) { |
| std::unique_ptr<DIR, decltype(&closedir)> dir(opendir(path.c_str()), closedir); |
| if (!dir) { |
| if (error) { |
| *error = "Cannot open " + path; |
| } |
| return NAME_NOT_FOUND; |
| } |
| |
| dirent* dp; |
| while ((dp = readdir(dir.get())) != nullptr) { |
| if (dp->d_type != DT_DIR) { |
| out->push_back(dp->d_name); |
| } |
| } |
| return OK; |
| } |
| }; |
| |
| extern FileFetcher* gFetcher; |
| |
| class PartitionMounter { |
| public: |
| virtual ~PartitionMounter() {} |
| virtual status_t mountSystem() const { return OK; } |
| virtual status_t mountVendor() const { return OK; } |
| virtual status_t umountSystem() const { return OK; } |
| virtual status_t umountVendor() const { return OK; } |
| }; |
| |
| extern PartitionMounter* gPartitionMounter; |
| |
| template <typename T> |
| status_t fetchAllInformation(const std::string& path, const XmlConverter<T>& converter, |
| T* outObject, std::string* error = nullptr) { |
| std::string info; |
| |
| if (gFetcher == nullptr) { |
| // Should never happen. |
| return NO_INIT; |
| } |
| |
| status_t result = gFetcher->fetch(path, info, error); |
| |
| if (result != OK) { |
| return result; |
| } |
| |
| bool success = converter(outObject, info); |
| if (!success) { |
| if (error) { |
| *error = "Illformed file: " + path + ": " + converter.lastError(); |
| } |
| return BAD_VALUE; |
| } |
| return OK; |
| } |
| |
| template <typename T> |
| class ObjectFactory { |
| public: |
| virtual ~ObjectFactory() = default; |
| virtual std::shared_ptr<T> make_shared() const { return std::make_shared<T>(); } |
| }; |
| extern ObjectFactory<RuntimeInfo>* gRuntimeInfoFactory; |
| |
| // TODO(b/70628538): Do not infer from Shipping API level. |
| inline Level convertFromApiLevel(size_t apiLevel) { |
| if (apiLevel < 26) { |
| return Level::LEGACY; |
| } else if (apiLevel == 26) { |
| return Level::O; |
| } else if (apiLevel == 27) { |
| return Level::O_MR1; |
| } else { |
| return Level::UNSPECIFIED; |
| } |
| } |
| |
| } // namespace details |
| } // namespace vintf |
| } // namespace android |
| |
| |
| |
| #endif |