mirror of
https://github.com/WinampDesktop/winamp.git
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354 lines
8.6 KiB
C++
Vendored
354 lines
8.6 KiB
C++
Vendored
#ifndef _RAR_HEADERS_
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#define _RAR_HEADERS_
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#define SIZEOF_MARKHEAD3 7 // Size of RAR 4.x archive mark header.
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#define SIZEOF_MAINHEAD14 7 // Size of RAR 1.4 main archive header.
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#define SIZEOF_MAINHEAD3 13 // Size of RAR 4.x main archive header.
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#define SIZEOF_FILEHEAD14 21 // Size of RAR 1.4 file header.
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#define SIZEOF_FILEHEAD3 32 // Size of RAR 3.0 file header.
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#define SIZEOF_SHORTBLOCKHEAD 7
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#define SIZEOF_LONGBLOCKHEAD 11
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#define SIZEOF_SUBBLOCKHEAD 14
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#define SIZEOF_COMMHEAD 13
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#define SIZEOF_PROTECTHEAD 26
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#define SIZEOF_UOHEAD 18
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#define SIZEOF_STREAMHEAD 26
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#define VER_PACK 29U
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#define VER_PACK5 50U // It is stored as 0, but we subtract 50 when saving an archive.
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#define VER_UNPACK 29U
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#define VER_UNPACK5 50U // It is stored as 0, but we add 50 when reading an archive.
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#define VER_UNKNOWN 9999U // Just some large value.
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#define MHD_VOLUME 0x0001U
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// Old style main archive comment embed into main archive header. Must not
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// be used in new archives anymore.
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#define MHD_COMMENT 0x0002U
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#define MHD_LOCK 0x0004U
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#define MHD_SOLID 0x0008U
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#define MHD_PACK_COMMENT 0x0010U
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#define MHD_NEWNUMBERING 0x0010U
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#define MHD_AV 0x0020U
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#define MHD_PROTECT 0x0040U
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#define MHD_PASSWORD 0x0080U
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#define MHD_FIRSTVOLUME 0x0100U
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#define LHD_SPLIT_BEFORE 0x0001U
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#define LHD_SPLIT_AFTER 0x0002U
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#define LHD_PASSWORD 0x0004U
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// Old style file comment embed into file header. Must not be used
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// in new archives anymore.
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#define LHD_COMMENT 0x0008U
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// For non-file subheaders it denotes 'subblock having a parent file' flag.
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#define LHD_SOLID 0x0010U
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#define LHD_WINDOWMASK 0x00e0U
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#define LHD_WINDOW64 0x0000U
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#define LHD_WINDOW128 0x0020U
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#define LHD_WINDOW256 0x0040U
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#define LHD_WINDOW512 0x0060U
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#define LHD_WINDOW1024 0x0080U
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#define LHD_WINDOW2048 0x00a0U
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#define LHD_WINDOW4096 0x00c0U
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#define LHD_DIRECTORY 0x00e0U
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#define LHD_LARGE 0x0100U
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#define LHD_UNICODE 0x0200U
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#define LHD_SALT 0x0400U
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#define LHD_VERSION 0x0800U
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#define LHD_EXTTIME 0x1000U
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#define SKIP_IF_UNKNOWN 0x4000U
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#define LONG_BLOCK 0x8000U
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#define EARC_NEXT_VOLUME 0x0001U // Not last volume.
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#define EARC_DATACRC 0x0002U // Store CRC32 of RAR archive (now is used only in volumes).
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#define EARC_REVSPACE 0x0004U // Reserve space for end of REV file 7 byte record.
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#define EARC_VOLNUMBER 0x0008U // Store a number of current volume.
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enum HEADER_TYPE {
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// RAR 5.0 header types.
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HEAD_MARK=0x00, HEAD_MAIN=0x01, HEAD_FILE=0x02, HEAD_SERVICE=0x03,
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HEAD_CRYPT=0x04, HEAD_ENDARC=0x05, HEAD_UNKNOWN=0xff,
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// RAR 1.5 - 4.x header types.
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HEAD3_MARK=0x72,HEAD3_MAIN=0x73,HEAD3_FILE=0x74,HEAD3_CMT=0x75,
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HEAD3_AV=0x76,HEAD3_OLDSERVICE=0x77,HEAD3_PROTECT=0x78,HEAD3_SIGN=0x79,
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HEAD3_SERVICE=0x7a,HEAD3_ENDARC=0x7b
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};
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// RAR 2.9 and earlier.
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enum { EA_HEAD=0x100,UO_HEAD=0x101,MAC_HEAD=0x102,BEEA_HEAD=0x103,
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NTACL_HEAD=0x104,STREAM_HEAD=0x105 };
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// Internal implementation, depends on archive format version.
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enum HOST_SYSTEM {
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// RAR 5.0 host OS
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HOST5_WINDOWS=0,HOST5_UNIX=1,
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// RAR 3.0 host OS.
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HOST_MSDOS=0,HOST_OS2=1,HOST_WIN32=2,HOST_UNIX=3,HOST_MACOS=4,
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HOST_BEOS=5,HOST_MAX
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};
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// Unified archive format independent implementation.
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enum HOST_SYSTEM_TYPE {
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HSYS_WINDOWS, HSYS_UNIX, HSYS_UNKNOWN
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};
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// We also use these values in extra field, so do not modify them.
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enum FILE_SYSTEM_REDIRECT {
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FSREDIR_NONE=0, FSREDIR_UNIXSYMLINK, FSREDIR_WINSYMLINK, FSREDIR_JUNCTION,
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FSREDIR_HARDLINK, FSREDIR_FILECOPY
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};
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#define SUBHEAD_TYPE_CMT L"CMT"
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#define SUBHEAD_TYPE_QOPEN L"QO"
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#define SUBHEAD_TYPE_ACL L"ACL"
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#define SUBHEAD_TYPE_STREAM L"STM"
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#define SUBHEAD_TYPE_UOWNER L"UOW"
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#define SUBHEAD_TYPE_AV L"AV"
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#define SUBHEAD_TYPE_RR L"RR"
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#define SUBHEAD_TYPE_OS2EA L"EA2"
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/* new file inherits a subblock when updating a host file */
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#define SUBHEAD_FLAGS_INHERITED 0x80000000
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#define SUBHEAD_FLAGS_CMT_UNICODE 0x00000001
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struct MarkHeader
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{
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byte Mark[8];
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// Following fields are virtual and not present in real blocks.
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uint HeadSize;
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};
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struct BaseBlock
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{
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uint HeadCRC; // 'ushort' for RAR 1.5.
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HEADER_TYPE HeaderType; // 1 byte for RAR 1.5.
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uint Flags; // 'ushort' for RAR 1.5.
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uint HeadSize; // 'ushort' for RAR 1.5, up to 2 MB for RAR 5.0.
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bool SkipIfUnknown;
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void Reset()
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{
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SkipIfUnknown=false;
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}
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};
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struct BlockHeader:BaseBlock
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{
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uint DataSize;
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};
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struct MainHeader:BaseBlock
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{
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ushort HighPosAV;
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uint PosAV;
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bool CommentInHeader;
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bool PackComment; // For RAR 1.4 archive format only.
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bool Locator;
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uint64 QOpenOffset; // Offset of quick list record.
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uint64 QOpenMaxSize; // Maximum size of QOpen offset in locator extra field.
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uint64 RROffset; // Offset of recovery record.
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uint64 RRMaxSize; // Maximum size of RR offset in locator extra field.
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void Reset();
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};
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struct FileHeader:BlockHeader
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{
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byte HostOS;
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uint UnpVer; // It is 1 byte in RAR29 and bit field in RAR5.
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byte Method;
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union {
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uint FileAttr;
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uint SubFlags;
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};
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wchar FileName[NM];
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Array<byte> SubData;
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RarTime mtime;
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RarTime ctime;
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RarTime atime;
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int64 PackSize;
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int64 UnpSize;
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int64 MaxSize; // Reserve packed and unpacked size bytes for vint of this size.
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HashValue FileHash;
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uint FileFlags;
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bool SplitBefore;
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bool SplitAfter;
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bool UnknownUnpSize;
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bool Encrypted;
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CRYPT_METHOD CryptMethod;
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bool SaltSet;
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byte Salt[SIZE_SALT50];
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byte InitV[SIZE_INITV];
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bool UsePswCheck;
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byte PswCheck[SIZE_PSWCHECK];
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// Use HMAC calculated from HashKey and checksum instead of plain checksum.
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bool UseHashKey;
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// Key to convert checksum to HMAC. Derived from password with PBKDF2
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// using additional iterations.
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byte HashKey[SHA256_DIGEST_SIZE];
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uint Lg2Count; // Log2 of PBKDF2 repetition count.
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bool Solid;
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bool Dir;
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bool CommentInHeader; // RAR 2.0 file comment.
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bool Version; // name.ext;ver file name containing the version number.
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size_t WinSize;
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bool Inherited; // New file inherits a subblock when updating a host file (for subblocks only).
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// 'true' if file sizes use 8 bytes instead of 4. Not used in RAR 5.0.
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bool LargeFile;
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// 'true' for HEAD_SERVICE block, which is a child of preceding file block.
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// RAR 4.x uses 'solid' flag to indicate child subheader blocks in archives.
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bool SubBlock;
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HOST_SYSTEM_TYPE HSType;
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FILE_SYSTEM_REDIRECT RedirType;
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wchar RedirName[NM];
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bool DirTarget;
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bool UnixOwnerSet,UnixOwnerNumeric,UnixGroupNumeric;
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char UnixOwnerName[256],UnixGroupName[256];
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#ifdef _UNIX
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uid_t UnixOwnerID;
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gid_t UnixGroupID;
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#else // Need these Unix fields in Windows too for 'list' command.
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uint UnixOwnerID;
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uint UnixGroupID;
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#endif
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void Reset(size_t SubDataSize=0);
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bool CmpName(const wchar *Name)
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{
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return(wcscmp(FileName,Name)==0);
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}
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FileHeader& operator = (FileHeader &hd);
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};
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struct EndArcHeader:BaseBlock
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{
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// Optional CRC32 of entire archive up to start of EndArcHeader block.
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// Present in RAR 4.x archives if EARC_DATACRC flag is set.
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uint ArcDataCRC;
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uint VolNumber; // Optional number of current volume.
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// 7 additional zero bytes can be stored here if EARC_REVSPACE is set.
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bool NextVolume; // Not last volume.
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bool DataCRC;
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bool RevSpace;
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bool StoreVolNumber;
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void Reset()
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{
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BaseBlock::Reset();
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NextVolume=false;
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DataCRC=false;
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RevSpace=false;
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StoreVolNumber=false;
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}
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};
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struct CryptHeader:BaseBlock
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{
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bool UsePswCheck;
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uint Lg2Count; // Log2 of PBKDF2 repetition count.
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byte Salt[SIZE_SALT50];
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byte PswCheck[SIZE_PSWCHECK];
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};
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// SubBlockHeader and its successors were used in RAR 2.x format.
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// RAR 4.x uses FileHeader with HEAD_SERVICE HeaderType for subblocks.
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struct SubBlockHeader:BlockHeader
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{
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ushort SubType;
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byte Level;
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};
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struct CommentHeader:BaseBlock
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{
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ushort UnpSize;
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byte UnpVer;
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byte Method;
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ushort CommCRC;
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};
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struct ProtectHeader:BlockHeader
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{
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byte Version;
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ushort RecSectors;
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uint TotalBlocks;
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byte Mark[8];
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};
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struct UnixOwnersHeader:SubBlockHeader
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{
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ushort OwnerNameSize;
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ushort GroupNameSize;
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/* dummy */
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char OwnerName[256];
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char GroupName[256];
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};
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struct EAHeader:SubBlockHeader
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{
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uint UnpSize;
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byte UnpVer;
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byte Method;
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uint EACRC;
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};
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struct StreamHeader:SubBlockHeader
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{
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uint UnpSize;
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byte UnpVer;
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byte Method;
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uint StreamCRC;
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ushort StreamNameSize;
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char StreamName[260];
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};
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#endif
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