1 /* 2 * Copyright (C) 2024 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 #pragma once 17 18 #include <android-base/macros.h> 19 #include <android-base/thread_annotations.h> 20 21 #include <map> 22 #include <set> 23 #include <span> 24 25 namespace android::hardware::radio::minimal::sim { 26 27 class Filesystem { 28 public: 29 /** 3GPP TS 27.007 8.18 */ 30 struct Path { 31 int32_t fileId; 32 std::string pathId; 33 auto operator<=>(const Path&) const = default; 34 std::string toString() const; 35 }; 36 37 typedef std::span<uint8_t const> FileView; 38 39 private: 40 mutable std::mutex mFilesGuard; 41 std::map<Path, std::vector<uint8_t>> mFiles GUARDED_BY(mFilesGuard); 42 std::set<int32_t> mUpdates GUARDED_BY(mFilesGuard); 43 44 DISALLOW_COPY_AND_ASSIGN(Filesystem); 45 46 public: 47 Filesystem(); 48 49 void write(const Path& path, FileView contents); 50 void write(const Path& path, std::string_view contents); 51 void write(const Path& path, std::vector<uint8_t>&& contents); 52 std::optional<FileView> read(const Path& path) const; 53 54 void writeBch(const Path& path, std::string_view contents); 55 std::optional<std::string> readBch(const Path& path) const; 56 57 std::optional<Path> find(uint16_t fileId); 58 59 std::set<int32_t> fetchAndClearUpdates(); 60 }; 61 62 namespace paths { 63 64 extern const Filesystem::Path mf; 65 extern const Filesystem::Path fplmn; 66 extern const Filesystem::Path iccid; 67 extern const Filesystem::Path msisdn; 68 extern const Filesystem::Path pl; 69 extern const Filesystem::Path arr; 70 extern const Filesystem::Path ad; 71 72 } // namespace paths 73 74 } // namespace android::hardware::radio::minimal::sim 75