1 /* 2 * Copyright (c) 2024-2024 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 SIGNATRUETOOLS_ZIP_ENTRY_HEADER_H 17 #define SIGNATRUETOOLS_ZIP_ENTRY_HEADER_H 18 19 #include <string> 20 21 #include "byte_buffer.h" 22 23 namespace OHOS { 24 namespace SignatureTools { 25 /** 26 * resolve zip ZipEntryHeader data 27 * end of central dir signature 4 bytes (0x06054b50) 28 * number of this disk 2 bytes 29 * number of the disk with the 30 * start of the central directory 2 bytes 31 * total number of entries in the 32 * central directory on this disk 2 bytes 33 * total number of entries in 34 * the central directory 2 bytes 35 * size of the central directory 4 bytes 36 * offset of start of central 37 * directory with respect to 38 * the starting disk number 4 bytes 39 * .ZIP file comment length 2 bytes 40 * .ZIP file comment (variable size) 41 */ 42 class ZipEntryHeader { 43 public: 44 /* ZipEntryHeader invariable bytes length */ 45 static constexpr int HEADER_LENGTH = 30; 46 47 /* 4 bytes , entry header signature */ 48 static constexpr int SIGNATURE = 0x04034b50; 49 50 /** 51 * get Zip Entry Header 52 * 53 * @param bytes ZipEntryHeader bytes 54 * @return ZipEntryHeader 55 * @throws ZipException read entry header exception 56 */ 57 static ZipEntryHeader* GetZipEntryHeader(const std::string& bytes); 58 59 void ReadFileName(const std::string& bytes); 60 61 void ReadExtra(const std::string& bytes); 62 63 std::string ToBytes(); 64 65 static int GetHeaderLength(); 66 67 static int GetSIGNATURE(); 68 69 short GetVersion(); 70 71 void SetVersion(short version); 72 73 short GetFlag(); 74 75 void SetFlag(short flag); 76 77 short GetMethod(); 78 79 void SetMethod(short method); 80 81 short GetLastTime(); 82 83 void SetLastTime(short lastTime); 84 85 short GetLastDate(); 86 87 void SetLastDate(short lastDate); 88 89 int GetCrc32(); 90 91 void SetCrc32(int crc32); 92 93 uint32_t GetCompressedSize(); 94 95 void SetCompressedSize(uint32_t compressedSize); 96 97 uint32_t GetUnCompressedSize(); 98 99 void SetUnCompressedSize(uint32_t unCompressedSize); 100 101 uint16_t GetFileNameLength(); 102 103 void SetFileNameLength(uint16_t fileNameLength); 104 105 uint16_t GetExtraLength(); 106 107 void SetExtraLength(uint16_t extraLength); 108 109 std::string GetFileName() const; 110 111 void SetFileName(const std::string& fileName); 112 113 std::string GetExtraData() const; 114 115 void SetExtraData(const std::string& extraData); 116 117 uint32_t GetLength(); 118 119 void SetLength(uint32_t length); 120 121 private: 122 /* 2 bytes */ 123 short m_version = 0; 124 125 /* 2 bytes */ 126 short m_flag = 0; 127 128 /* 2 bytes */ 129 short m_method = 0; 130 131 /* 2 bytes */ 132 short m_lastTime = 0; 133 134 /* 2 bytes */ 135 short m_lastDate = 0; 136 137 /* 4 bytes */ 138 int m_crc32 = 0; 139 140 /* 4 bytes */ 141 uint32_t m_compressedSize = 0; 142 143 /* 4 bytes */ 144 uint32_t m_unCompressedSize = 0; 145 146 /* 2 bytes */ 147 uint16_t m_fileNameLength = 0; 148 149 /* 2 bytes */ 150 uint16_t m_extraLength = 0; 151 152 /* n bytes */ 153 std::string m_fileName; 154 155 /* n bytes */ 156 std::string m_extraData; 157 158 uint32_t m_length = 0; 159 }; 160 } // namespace SignatureTools 161 } // namespace OHOS 162 #endif // SIGNATRUETOOLS_ZIP_ENTRY_HEADER_H