1 /* 2 * Copyright (C) 2006 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 17 // 18 // Class to rewrite zip file headers to remove dynamic timestamps. 19 // 20 #ifndef __LIBS_ZIPFILE_H 21 #define __LIBS_ZIPFILE_H 22 23 #include <stdio.h> 24 25 #include "ZipEntry.h" 26 27 namespace android { 28 29 /* 30 * Manipulate a Zip archive. 31 */ 32 class ZipFile { 33 public: ZipFile(void)34 ZipFile(void) : mZipFp(NULL) {} ~ZipFile(void)35 ~ZipFile(void) { 36 if (mZipFp != NULL) 37 fclose(mZipFp); 38 } 39 40 /* 41 * Rewrite an archive's headers to remove dynamic timestamps. 42 */ 43 status_t rewrite(const char* zipFileName); 44 45 private: 46 /* these are private and not defined */ 47 ZipFile(const ZipFile& src); 48 ZipFile& operator=(const ZipFile& src); 49 50 class EndOfCentralDir { 51 public: EndOfCentralDir(void)52 EndOfCentralDir(void) : mTotalNumEntries(0), mCentralDirOffset(0) {} 53 54 status_t readBuf(const uint8_t* buf, int len); 55 56 uint16_t mTotalNumEntries; 57 uint32_t mCentralDirOffset; // offset from first disk 58 59 enum { 60 kSignature = 0x06054b50, 61 kEOCDLen = 22, // EndOfCentralDir len, excl. comment 62 63 kMaxCommentLen = 65535, // longest possible in ushort 64 kMaxEOCDSearch = kMaxCommentLen + EndOfCentralDir::kEOCDLen, 65 66 }; 67 }; 68 69 /* read all entries in the central dir */ 70 status_t rewriteCentralDir(void); 71 72 /* 73 * We use stdio FILE*, which gives us buffering but makes dealing 74 * with files >2GB awkward. Until we support Zip64, we're fine. 75 */ 76 FILE* mZipFp; // Zip file pointer 77 78 /* one of these per file */ 79 EndOfCentralDir mEOCD; 80 }; 81 82 }; // namespace android 83 84 #endif // __LIBS_ZIPFILE_H 85