1 /* 2 * Copyright (c) 2025 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef PHONECLONE_INSTALLDUNTARFILE_H 17 #define PHONECLONE_INSTALLDUNTARFILE_H 18 #include "installd_tar_utils.h" 19 #include "tar_util.h" 20 #include <string> 21 #include <vector> 22 23 namespace installd { 24 25 struct ParseTarPath { 26 char *longName = nullptr; 27 char *longLink = nullptr; 28 char *fullPath = nullptr; 29 char *realName = nullptr; 30 char *realLink = nullptr; 31 }; 32 33 struct TarFileInfo { 34 off_t fileSize; 35 off_t fileBlockCnt; 36 off_t pos; 37 }; 38 39 // helper function. 40 off_t ParseOctalStr(const char *p, size_t n); 41 42 class UnTarFile { 43 public: 44 UnTarFile(const char *TarPath); 45 virtual ~UnTarFile(void); 46 47 public: 48 void Reset(); 49 bool CheckIsSplitTar(const std::string &tarFile, const std::string &rootpath); 50 int UnSplitTar(const std::string &tarFile, const std::string &rootpath); 51 52 public: 53 typedef enum { eList = 0, eUnpack = 1, eCheckSplit = 2 } EParseType; 54 55 private: 56 bool IsProcessTarEnd(char *buff, int &ret); 57 int ParseTarFile(const char *rootPath = "", EParseType type = eList); 58 bool IsEmptyBlock(const char *p); 59 int CheckFileAndInitPath(const char *rootPath, ParseTarPath *parseTarPath); 60 void SetFileChmodAndChown(char *buff, ParseTarPath *parseTarPath, bool &isSoftLink); 61 void HandleGnuLongLink(ParseTarPath *parseTarPath, bool &isSkip, TarFileInfo &tarFileInfo); 62 void HandleGnuLongName(ParseTarPath *parseTarPath, bool &isSkip, TarFileInfo &tarFileInfo); 63 void HandleRegularFile(char *buff, EParseType type, ParseTarPath *parseTarPath, bool &isSkip, 64 TarFileInfo &tarFileInfo); 65 bool FileReadAndWrite(char *destBuff, FILE *destF, size_t readBuffSize); 66 void HandleRegularEUnpackFile(char *buff, ParseTarPath *parseTarPath, bool &isSkip, TarFileInfo &tarFileInfo); 67 bool ProcessTarBlock(char *buff, EParseType type, ParseTarPath *parseTarPath, bool &isSkip, bool &isSoftLink); 68 bool IsValidTarBlock(const TarHeader *tarHeader); 69 bool VerifyChecksum(const TarHeader *tarHeader); 70 void FreePointer(ParseTarPath *parseTarPath); 71 void FreeLongTypePointer(ParseTarPath *parseTarPath); 72 bool CreateDirWithRecursive(const std::string &filePath, mode_t mode = (mode_t)448); 73 74 private: 75 FILE *FilePtr; 76 off_t tarSize; 77 uid_t newOwner; 78 std::string m_srcPath; 79 bool isSplit = false; 80 std::vector<std::string> file_names; 81 std::vector<off_t> file_sizes; 82 std::vector<off_t> file_data_addrs; 83 }; 84 } // namespace installd 85 #endif // PHONECLONE_INSTALLDUNTARFILE_H