easy7zip/CPP/7zip/Archive/Zip/ZipHeader.h

// ZipHeader.h

#ifndef __ARCHIVE_ZIP_HEADER_H
#define __ARCHIVE_ZIP_HEADER_H

#include "../../../Common/MyTypes.h"

namespace NArchive {
namespace NZip {

const unsigned kMarkerSize = 4;

namespace NSignature
{
  const UInt32 kLocalFileHeader   = 0x04034B50;
  const UInt32 kDataDescriptor    = 0x08074B50;
  const UInt32 kCentralFileHeader = 0x02014B50;
  const UInt32 kEcd               = 0x06054B50;
  const UInt32 kEcd64             = 0x06064B50;
  const UInt32 kEcd64Locator      = 0x07064B50;

  // const UInt32 kSpan    = 0x08074B50;
  const UInt32 kNoSpan = 0x30304b50; // PK00, replaces kSpan, if there is only 1 segment
}

const unsigned kLocalHeaderSize = 4 + 26; // including signature
const unsigned kDataDescriptorSize = 4 + 12;  // including signature
const unsigned kCentralHeaderSize = 4 + 42; // including signature

const unsigned kEcdSize = 22; // including signature
const unsigned kEcd64_MainSize = 44;
const unsigned kEcd64_FullSize = 12 + kEcd64_MainSize;
const unsigned kEcd64Locator_Size = 20;

namespace NFileHeader
{
  namespace NCompressionMethod
  {
    enum EType
    {
      kStored = 0,
      kShrunk = 1,
      kReduced1 = 2,
      kReduced2 = 3,
      kReduced3 = 4,
      kReduced4 = 5,
      kImploded = 6,
      kReservedTokenizing = 7, // reserved for tokenizing
      kDeflated = 8,
      kDeflated64 = 9,
      kPKImploding = 10,
      
      kBZip2 = 12,
      kLZMA = 14,
      kTerse = 18,
      kLz77 = 19,
      kJpeg = 0x60,
      kWavPack = 0x61,
      kPPMd = 0x62,
      kWzAES = 0x63
    };

    const Byte kMadeByProgramVersion = 63;
    
    const Byte kExtractVersion_Default = 10;
    const Byte kExtractVersion_Dir = 20;
    const Byte kExtractVersion_ZipCrypto = 20;
    const Byte kExtractVersion_Deflate = 20;
    const Byte kExtractVersion_Deflate64 = 21;
    const Byte kExtractVersion_Zip64 = 45;
    const Byte kExtractVersion_BZip2 = 46;
    const Byte kExtractVersion_Aes = 51;
    const Byte kExtractVersion_LZMA = 63;
    const Byte kExtractVersion_PPMd = 63;
  }

  namespace NExtraID
  {
    enum
    {
      kZip64 = 0x01,
      kNTFS = 0x0A,
      kStrongEncrypt = 0x17,
      kUnixTime = 0x5455,
      kWzAES = 0x9901
    };
  }

  namespace NNtfsExtra
  {
    const UInt16 kTagTime = 1;
    enum
    {
      kMTime = 0,
      kATime,
      kCTime
    };
  }

  namespace NUnixTime
  {
    enum
    {
      kMTime = 0,
      kATime,
      kCTime
    };
  }

  namespace NFlags
  {
    const unsigned kEncrypted = 1 << 0;
    const unsigned kLzmaEOS = 1 << 1;
    const unsigned kDescriptorUsedMask = 1 << 3;
    const unsigned kStrongEncrypted = 1 << 6;
    const unsigned kUtf8 = 1 << 11;

    const unsigned kImplodeDictionarySizeMask = 1 << 1;
    const unsigned kImplodeLiteralsOnMask     = 1 << 2;
    
    const unsigned kDeflateTypeBitStart = 1;
    const unsigned kNumDeflateTypeBits = 2;
    const unsigned kNumDeflateTypes = (1 << kNumDeflateTypeBits);
    const unsigned kDeflateTypeMask = (1 << kNumDeflateTypeBits) - 1;
  }
  
  namespace NHostOS
  {
    enum EEnum
    {
      kFAT      =  0,
      kAMIGA    =  1,
      kVMS      =  2,  // VAX/VMS
      kUnix     =  3,
      kVM_CMS   =  4,
      kAtari    =  5,  // what if it's a minix filesystem? [cjh]
      kHPFS     =  6,  // filesystem used by OS/2 (and NT 3.x)
      kMac      =  7,
      kZ_System =  8,
      kCPM      =  9,
      kTOPS20   = 10,  // pkzip 2.50 NTFS
      kNTFS     = 11,  // filesystem used by Windows NT
      kQDOS     = 12,  // SMS/QDOS
      kAcorn    = 13,  // Archimedes Acorn RISC OS
      kVFAT     = 14,  // filesystem used by Windows 95, NT
      kMVS      = 15,
      kBeOS     = 16,  // hybrid POSIX/database filesystem
      kTandem   = 17,
      kOS400    = 18,
      kOSX      = 19
    };
  }

  namespace NUnixAttrib
  {
    const UInt32 kIFMT   =   0170000;  // file type mask
    
    const UInt32 kIFDIR  =   0040000;  // directory
    const UInt32 kIFREG  =   0100000;  // regular file
    const UInt32 kIFSOCK =   0140000;  // socket (BSD, not SysV or Amiga)
    const UInt32 kIFLNK  =   0120000;  // symbolic link (not SysV, Amiga)
    const UInt32 kIFBLK  =   0060000;  // block special       (not Amiga)
    const UInt32 kIFCHR  =   0020000;  // character special   (not Amiga)
    const UInt32 kIFIFO  =   0010000;  // fifo    (BCC, not MSC or Amiga)
    
    const UInt32 kISUID  =   04000;    // set user id on execution
    const UInt32 kISGID  =   02000;    // set group id on execution
    const UInt32 kISVTX  =   01000;    // directory permissions control
    const UInt32 kENFMT  =  kISGID;    // record locking enforcement flag
    const UInt32 kIRWXU  =   00700;    // read, write, execute: owner
    const UInt32 kIRUSR  =   00400;    // read permission: owner
    const UInt32 kIWUSR  =   00200;    // write permission: owner
    const UInt32 kIXUSR  =   00100;    // execute permission: owner
    const UInt32 kIRWXG  =   00070;    // read, write, execute: group
    const UInt32 kIRGRP  =   00040;    // read permission: group
    const UInt32 kIWGRP  =   00020;    // write permission: group
    const UInt32 kIXGRP  =   00010;    // execute permission: group
    const UInt32 kIRWXO  =   00007;    // read, write, execute: other
    const UInt32 kIROTH  =   00004;    // read permission: other
    const UInt32 kIWOTH  =   00002;    // write permission: other
    const UInt32 kIXOTH  =   00001;    // execute permission: other
  }
  
  namespace NAmigaAttrib
  {
    const UInt32 kIFMT     = 06000;    // Amiga file type mask
    const UInt32 kIFDIR    = 04000;    // Amiga directory
    const UInt32 kIFREG    = 02000;    // Amiga regular file
    const UInt32 kIHIDDEN  = 00200;    // to be supported in AmigaDOS 3.x
    const UInt32 kISCRIPT  = 00100;    // executable script (text command file)
    const UInt32 kIPURE    = 00040;    // allow loading into resident memory
    const UInt32 kIARCHIVE = 00020;    // not modified since bit was last set
    const UInt32 kIREAD    = 00010;    // can be opened for reading
    const UInt32 kIWRITE   = 00004;    // can be opened for writing
    const UInt32 kIEXECUTE = 00002;    // executable image, a loadable runfile
    const UInt32 kIDELETE  = 00001;    // can be deleted
  }
}

}}

#endif