tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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nsZipHeader.h (2498B)

      1 /* This Source Code Form is subject to the terms of the Mozilla Public
      2 * License, v. 2.0. If a copy of the MPL was not distributed with this
      3 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
      4 */
      5 
      6 #ifndef _nsZipHeader_h_
      7 #define _nsZipHeader_h_
      8 
      9 #include "nsString.h"
     10 #include "nsIOutputStream.h"
     11 #include "nsIInputStream.h"
     12 #include "nsIZipReader.h"
     13 #include "mozilla/UniquePtr.h"
     14 
     15 // High word is S_IFREG, low word is DOS file attribute
     16 #define ZIP_ATTRS_FILE 0x80000000
     17 // High word is S_IFDIR, low word is DOS dir attribute
     18 #define ZIP_ATTRS_DIRECTORY 0x40000010
     19 #define PERMISSIONS_FILE 0644
     20 #define PERMISSIONS_DIR 0755
     21 
     22 // Combine file type attributes with unix style permissions
     23 #define ZIP_ATTRS(p, a) ((p & 0xfff) << 16) | a
     24 
     25 class nsZipHeader final : public nsIZipEntry {
     26  ~nsZipHeader() {
     27    mExtraField = nullptr;
     28    mLocalExtraField = nullptr;
     29  }
     30 
     31 public:
     32  NS_DECL_ISUPPORTS
     33  NS_DECL_NSIZIPENTRY
     34 
     35  nsZipHeader()
     36      : mCRC(0),
     37        mCSize(0),
     38        mUSize(0),
     39        mEAttr(0),
     40        mOffset(0),
     41        mFieldLength(0),
     42        mLocalFieldLength(0),
     43        mVersionMade(0x0300 +
     44                     23),    // Generated on Unix by v2.3 (matches infozip)
     45        mVersionNeeded(20),  // Requires v2.0 to extract
     46        mFlags(0),
     47        mMethod(0),
     48        mTime(0),
     49        mDate(0),
     50        mDisk(0),
     51        mIAttr(0),
     52        mInited(false),
     53        mWriteOnClose(false),
     54        mExtraField(nullptr),
     55        mLocalExtraField(nullptr) {}
     56 
     57  uint32_t mCRC;
     58  uint32_t mCSize;
     59  uint32_t mUSize;
     60  uint32_t mEAttr;
     61  uint32_t mOffset;
     62  uint32_t mFieldLength;
     63  uint32_t mLocalFieldLength;
     64  uint16_t mVersionMade;
     65  uint16_t mVersionNeeded;
     66  uint16_t mFlags;
     67  uint16_t mMethod;
     68  uint16_t mTime;
     69  uint16_t mDate;
     70  uint16_t mDisk;
     71  uint16_t mIAttr;
     72  bool mInited;
     73  bool mWriteOnClose;
     74  nsCString mName;
     75  nsCString mComment;
     76  mozilla::UniquePtr<uint8_t[]> mExtraField;
     77  mozilla::UniquePtr<uint8_t[]> mLocalExtraField;
     78 
     79  nsresult Init(const nsACString& aPath, PRTime aDate, uint32_t aAttr,
     80                uint32_t aOffset);
     81  uint32_t GetFileHeaderLength();
     82  nsresult WriteFileHeader(nsIOutputStream* aStream);
     83  uint32_t GetCDSHeaderLength();
     84  nsresult WriteCDSHeader(nsIOutputStream* aStream);
     85  nsresult ReadCDSHeader(nsIInputStream* aStream);
     86  const uint8_t* GetExtraField(uint16_t aTag, bool aLocal,
     87                               uint16_t* aBlockSize);
     88  nsresult PadExtraField(uint32_t aOffset, uint16_t aAlignSize);
     89 };
     90 
     91 #endif