nsZipHeader.h - mozsearch

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/.

*/

#ifndef _nsZipHeader_h_

#define _nsZipHeader_h_

#include "nsString.h"

#include "nsIOutputStream.h"

#include "nsIInputStream.h"

#include "nsIZipReader.h"

#include "mozilla/Attributes.h"

#include "mozilla/UniquePtr.h"

// High word is S_IFREG, low word is DOS file attribute

#define ZIP_ATTRS_FILE 0x80000000

// High word is S_IFDIR, low word is DOS dir attribute

#define ZIP_ATTRS_DIRECTORY 0x40000010

#define PERMISSIONS_FILE 0644

#define PERMISSIONS_DIR 0755

// Combine file type attributes with unix style permissions

#define ZIP_ATTRS(p, a) ((p & 0xfff) << 16) | a

class nsZipHeader final : public nsIZipEntry {

  ~nsZipHeader() {

    mExtraField = nullptr;

    mLocalExtraField = nullptr;

 public:

  NS_DECL_ISUPPORTS

  NS_DECL_NSIZIPENTRY

  nsZipHeader()

      : mCRC(0),

        mCSize(0),

        mUSize(0),

        mEAttr(0),

        mOffset(0),

        mFieldLength(0),

        mLocalFieldLength(0),

        mVersionMade(0x0300 +

                     23),    // Generated on Unix by v2.3 (matches infozip)

        mVersionNeeded(20),  // Requires v2.0 to extract

        mFlags(0),

        mMethod(0),

        mTime(0),

        mDate(0),

        mDisk(0),

        mIAttr(0),

        mInited(false),

        mWriteOnClose(false),

        mExtraField(nullptr),

        mLocalExtraField(nullptr) {}

  uint32_t mCRC;

  uint32_t mCSize;

  uint32_t mUSize;

  uint32_t mEAttr;

  uint32_t mOffset;

  uint32_t mFieldLength;

  uint32_t mLocalFieldLength;

  uint16_t mVersionMade;

  uint16_t mVersionNeeded;

  uint16_t mFlags;

  uint16_t mMethod;

  uint16_t mTime;

  uint16_t mDate;

  uint16_t mDisk;

  uint16_t mIAttr;

  bool mInited;

  bool mWriteOnClose;

  nsCString mName;

  nsCString mComment;

  mozilla::UniquePtr<uint8_t[]> mExtraField;

  mozilla::UniquePtr<uint8_t[]> mLocalExtraField;

  nsresult Init(const nsACString& aPath, PRTime aDate, uint32_t aAttr,

                uint32_t aOffset);

  uint32_t GetFileHeaderLength();

  nsresult WriteFileHeader(nsIOutputStream* aStream);

  uint32_t GetCDSHeaderLength();

  nsresult WriteCDSHeader(nsIOutputStream* aStream);

  nsresult ReadCDSHeader(nsIInputStream* aStream);

  const uint8_t* GetExtraField(uint16_t aTag, bool aLocal,

                               uint16_t* aBlockSize);

  nsresult PadExtraField(uint32_t aOffset, uint16_t aAlignSize);

};

#endif