mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-01-31 11:37:35 +00:00
52d28966f7
Since 8ff48201ca we no longer need the
hack where, when running .com.dbg files, we scanned for the embedded
.com file offset, and then computed zip offsets realtive to that. It
wasn't very reliable in the first place, and was causing issues with
running our new .com.dbg executables, which are true zip files.
238 lines
9.9 KiB
C
238 lines
9.9 KiB
C
#ifndef COSMOPOLITAN_LIBC_ZIP_H_
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#define COSMOPOLITAN_LIBC_ZIP_H_
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#include "libc/calls/struct/timespec.h"
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#include "libc/intrin/bits.h"
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#include "libc/macros.internal.h"
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#include "libc/str/str.h"
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/**
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* @fileoverview PKZIP Data Structures.
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*/
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#ifdef __ASSEMBLER__
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#define ZM_(x) x
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#else
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#define ZM_(x) ~VEIL("r", ~x) /* prevent magic from appearing in binary */
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#endif
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#ifdef TINY
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#define _ZE(x) -1
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#else
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#define _ZE(x) x
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#endif
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#define kZipOk 0
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#define kZipErrorEocdNotFound _ZE(-1)
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#define kZipErrorEocdOffsetOverflow _ZE(-2)
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#define kZipErrorEocdMagicNotFound _ZE(-3)
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#define kZipErrorEocdSizeOverflow _ZE(-4)
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#define kZipErrorEocdDiskMismatch _ZE(-5)
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#define kZipErrorEocdOffsetSizeOverflow _ZE(-6)
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#define kZipErrorEocdRecordsMismatch _ZE(-7)
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#define kZipErrorEocdRecordsOverflow _ZE(-8)
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#define kZipErrorCdirOffsetPastEocd _ZE(-9)
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#define kZipErrorEocdLocatorMagic _ZE(-10)
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#define kZipErrorEocdLocatorOffset _ZE(-11)
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#define kZipErrorRaceCondition _ZE(-12)
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#define kZipErrorMapFailed _ZE(-13)
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#define kZipErrorOpenFailed _ZE(-14)
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#define kZipCosmopolitanVersion kZipEra2001
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#define kZipOsDos 0
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#define kZipOsAmiga 1
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#define kZipOsOpenvms 2
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#define kZipOsUnix 3
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#define kZipOsVmcms 4
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#define kZipOsAtarist 5
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#define kZipOsOs2hpfs 6
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#define kZipOsMacintosh 7
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#define kZipOsZsystem 8
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#define kZipOsCpm 9
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#define kZipOsWindowsntfs 10
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#define kZipOsMvsos390zos 11
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#define kZipOsVse 12
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#define kZipOsAcornrisc 13
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#define kZipOsVfat 14
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#define kZipOsAltmvs 15
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#define kZipOsBeos 16
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#define kZipOsTandem 17
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#define kZipOsOs400 18
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#define kZipOsOsxdarwin 19
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#define kZipEra1989 10 /* PKZIP 1.0 */
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#define kZipEra1993 20 /* PKZIP 2.0: deflate/subdir/etc. support */
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#define kZipEra2001 45 /* PKZIP 4.5: kZipExtraZip64 support */
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#define kZipIattrBinary 0 /* first bit not set */
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#define kZipIattrText 1 /* first bit set */
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#define kZipCompressionNone 0
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#define kZipCompressionDeflate 8
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#define kZipCdirHdrMagic ZM_(0x06054b50) /* PK♣♠ "PK\5\6" */
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#define kZipCdirHdrMagicTodo ZM_(0x19184b50) /* PK♣♠ "PK\30\31" */
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#define kZipCdirHdrMinSize 22
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#define kZipCdirHdrLinkableSize 294
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#define kZipCdirDiskOffset 4
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#define kZipCdirStartingDiskOffset 6
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#define kZipCdirRecordsOnDiskOffset 8
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#define kZipCdirRecordsOffset 10
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#define kZipCdirSizeOffset 12
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#define kZipCdirOffsetOffset 16
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#define kZipCdirCommentSizeOffset 20
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#define kZipCdir64HdrMagic ZM_(0x06064b50) /* PK♠♠ "PK\6\6" */
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#define kZipCdir64HdrMinSize 56
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#define kZipCdir64LocatorMagic ZM_(0x07064b50) /* PK♠• "PK\6\7" */
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#define kZipCdir64LocatorSize 20
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#define kZipCfileHdrMagic ZM_(0x02014b50) /* PK☺☻ "PK\1\2" */
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#define kZipCfileHdrMinSize 46
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#define kZipCfileOffsetGeneralflag 8
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#define kZipCfileOffsetCompressionmethod 10
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#define kZipCfileOffsetLastmodifiedtime 12
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#define kZipCfileOffsetLastmodifieddate 14
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#define kZipCfileOffsetCrc32 16
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#define kZipCfileOffsetCompressedsize 20
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#define kZipCfileOffsetUncompressedsize 24
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#define kZipCfileOffsetExternalattributes 38
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#define kZipCfileOffsetOffset 42
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#define kZipLfileHdrMagic ZM_(0x04034b50) /* PK♥♦ "PK\3\4" */
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#define kZipLfileHdrMinSize 30
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#define kZipLfileOffsetGeneralflag 6
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#define kZipLfileOffsetCompressionmethod 8
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#define kZipLfileOffsetLastmodifiedtime 10
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#define kZipLfileOffsetLastmodifieddate 12
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#define kZipLfileOffsetCrc32 14
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#define kZipLfileOffsetCompressedsize 18
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#define kZipLfileOffsetUncompressedsize 22
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#define kZipGflagUtf8 0x800
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#define kZipExtraHdrSize 4
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#define kZipExtraZip64 0x0001
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#define kZipExtraNtfs 0x000a
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#define kZipExtraUnix 0x000d
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#define kZipExtraExtendedTimestamp 0x5455
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#define kZipExtraInfoZipNewUnixExtra 0x7875
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#define kZipCfileMagic "PK\001\002"
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#if !(__ASSEMBLER__ + __LINKER__ + 0)
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/* end of central directory record */
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#define ZIP_CDIR_MAGIC(P) READ32LE(P)
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#define ZIP_CDIR_DISK(P) READ16LE((P) + kZipCdirDiskOffset)
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#define ZIP_CDIR_STARTINGDISK(P) READ16LE((P) + kZipCdirStartingDiskOffset)
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#define ZIP_CDIR_RECORDSONDISK(P) READ16LE((P) + kZipCdirRecordsOnDiskOffset)
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#define ZIP_CDIR_RECORDS(P) READ16LE((P) + kZipCdirRecordsOffset)
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#define ZIP_CDIR_SIZE(P) READ32LE((P) + kZipCdirSizeOffset)
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#define ZIP_CDIR_OFFSET(P) READ32LE((P) + kZipCdirOffsetOffset)
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#define ZIP_CDIR_COMMENTSIZE(P) READ16LE((P) + kZipCdirCommentSizeOffset)
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#define ZIP_CDIR_COMMENT(P) ((P) + 22) /* recommend stopping at nul */
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#define ZIP_CDIR_HDRSIZE(P) (ZIP_CDIR_COMMENTSIZE(P) + kZipCdirHdrMinSize)
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/* zip64 end of central directory record */
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#define ZIP_CDIR64_MAGIC(P) READ32LE(P)
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#define ZIP_CDIR64_HDRSIZE(P) (READ64LE((P) + 4) + 12)
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#define ZIP_CDIR64_VERSIONMADE(P) READ16LE((P) + 12)
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#define ZIP_CDIR64_VERSIONNEED(P) READ16LE((P) + 14)
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#define ZIP_CDIR64_DISK(P) READ32LE((P) + 16)
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#define ZIP_CDIR64_STARTINGDISK(P) READ32LE((P) + 20)
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#define ZIP_CDIR64_RECORDSONDISK(P) READ64LE((P) + 24)
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#define ZIP_CDIR64_RECORDS(P) READ64LE((P) + 32)
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#define ZIP_CDIR64_SIZE(P) READ64LE((P) + 40)
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#define ZIP_CDIR64_OFFSET(P) READ64LE((P) + 48)
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#define ZIP_CDIR64_COMMENTSIZE(P) \
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(ZIP_CDIR64_HDRSIZE(P) >= 56 ? ZIP_CDIR64_HDRSIZE(P) - 56 : 0)
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#define ZIP_CDIR64_COMMENT(P) ((P) + 56) /* recommend stopping at nul */
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#define ZIP_LOCATE64_MAGIC(P) READ32LE(P)
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#define ZIP_LOCATE64_STARTINGDISK(P) READ32LE((P) + 4)
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#define ZIP_LOCATE64_OFFSET(P) READ64LE((P) + 8)
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#define ZIP_LOCATE64_TOTALDISKS(P) READ32LE((P) + 12)
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/* central directory file header */
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#define ZIP_CFILE_MAGIC(P) READ32LE(P)
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#define ZIP_CFILE_VERSIONMADE(P) (255 & (P)[4])
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#define ZIP_CFILE_FILEATTRCOMPAT(P) (255 & (P)[5])
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#define ZIP_CFILE_VERSIONNEED(P) (255 & (P)[6])
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#define ZIP_CFILE_OSNEED(P) (255 & (P)[7])
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#define ZIP_CFILE_GENERALFLAG(P) READ16LE((P) + kZipCfileOffsetGeneralflag)
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#define ZIP_CFILE_COMPRESSIONMETHOD(P) \
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READ16LE((P) + kZipCfileOffsetCompressionmethod)
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#define ZIP_CFILE_LASTMODIFIEDTIME(P) \
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READ16LE((P) + kZipCfileOffsetLastmodifiedtime) /* @see DOS_TIME() */
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#define ZIP_CFILE_LASTMODIFIEDDATE(P) \
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READ16LE((P) + kZipCfileOffsetLastmodifieddate) /* @see DOS_DATE() */
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#define ZIP_CFILE_CRC32(P) READ32LE((P) + kZipCfileOffsetCrc32)
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#define ZIP_CFILE_COMPRESSEDSIZE(P) READ32LE(P + kZipCfileOffsetCompressedsize)
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#define ZIP_CFILE_UNCOMPRESSEDSIZE(P) \
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READ32LE((P) + kZipCfileOffsetUncompressedsize)
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#define ZIP_CFILE_NAMESIZE(P) READ16LE((P) + 28)
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#define ZIP_CFILE_EXTRASIZE(P) READ16LE((P) + 30)
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#define ZIP_CFILE_COMMENTSIZE(P) READ16LE((P) + 32)
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#define ZIP_CFILE_DISK(P) READ16LE((P) + 34)
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#define ZIP_CFILE_INTERNALATTRIBUTES(P) READ16LE((P) + 36)
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#define ZIP_CFILE_EXTERNALATTRIBUTES(P) \
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READ32LE((P) + kZipCfileOffsetExternalattributes)
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#define ZIP_CFILE_OFFSET(P) READ32LE((P) + kZipCfileOffsetOffset)
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#define ZIP_CFILE_NAME(P) ((const char *)((P) + 46)) /* not nul-terminated */
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#define ZIP_CFILE_EXTRA(P) ((P) + 46 + ZIP_CFILE_NAMESIZE(P))
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#define ZIP_CFILE_COMMENT(P) \
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((const char *)((P) + 46 + ZIP_CFILE_NAMESIZE(P) + \
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ZIP_CFILE_EXTRASIZE(P))) /* recommend stopping at nul */
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#define ZIP_CFILE_HDRSIZE(P) \
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(ZIP_CFILE_NAMESIZE(P) + ZIP_CFILE_EXTRASIZE(P) + ZIP_CFILE_COMMENTSIZE(P) + \
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kZipCfileHdrMinSize)
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/* local file header */
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#define ZIP_LFILE_MAGIC(P) READ32LE(P)
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#define ZIP_LFILE_VERSIONNEED(P) (255 & (P)[4])
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#define ZIP_LFILE_OSNEED(P) (255 & (P)[5])
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#define ZIP_LFILE_GENERALFLAG(P) READ16LE((P) + kZipLfileOffsetGeneralflag)
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#define ZIP_LFILE_COMPRESSIONMETHOD(P) \
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READ16LE((P) + kZipLfileOffsetCompressionmethod)
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#define ZIP_LFILE_LASTMODIFIEDTIME(P) \
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READ16LE((P) + kZipLfileOffsetLastmodifiedtime) /* @see DOS_TIME() */
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#define ZIP_LFILE_LASTMODIFIEDDATE(P) \
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READ16LE((P) + kZipLfileOffsetLastmodifieddate) /* @see DOS_DATE() */
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#define ZIP_LFILE_CRC32(P) READ32LE((P) + kZipLfileOffsetCrc32)
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#define ZIP_LFILE_COMPRESSEDSIZE(P) \
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READ32LE((P) + kZipLfileOffsetCompressedsize)
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#define ZIP_LFILE_UNCOMPRESSEDSIZE(P) \
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READ32LE((P) + kZipLfileOffsetUncompressedsize)
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#define ZIP_LFILE_NAMESIZE(P) READ16LE((P) + 26)
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#define ZIP_LFILE_EXTRASIZE(P) READ16LE((P) + 28)
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#define ZIP_LFILE_NAME(P) ((const char *)((P) + 30))
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#define ZIP_LFILE_EXTRA(P) ((P) + 30 + ZIP_LFILE_NAMESIZE(P))
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#define ZIP_LFILE_HDRSIZE(P) \
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(ZIP_LFILE_NAMESIZE(P) + ZIP_LFILE_EXTRASIZE(P) + kZipLfileHdrMinSize)
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#define ZIP_LFILE_CONTENT(P) ((P) + ZIP_LFILE_HDRSIZE(P))
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#define ZIP_LFILE_SIZE(P) (ZIP_LFILE_HDRSIZE(P) + ZIP_LFILE_COMPRESSEDSIZE(P))
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#define ZIP_EXTRA_HEADERID(P) READ16LE(P)
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#define ZIP_EXTRA_CONTENTSIZE(P) READ16LE((P) + 2)
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#define ZIP_EXTRA_CONTENT(P) ((P) + 4)
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#define ZIP_EXTRA_SIZE(P) (ZIP_EXTRA_CONTENTSIZE(P) + kZipExtraHdrSize)
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void *GetZipEocd(const void *, size_t, int *);
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int IsZipEocd32(const uint8_t *, size_t, size_t);
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int IsZipEocd64(const uint8_t *, size_t, size_t);
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int GetZipCfileMode(const uint8_t *);
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uint64_t GetZipCdirOffset(const uint8_t *);
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uint64_t GetZipCdirRecords(const uint8_t *);
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void *GetZipCdirComment(const uint8_t *);
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uint64_t GetZipCdirSize(const uint8_t *);
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uint64_t GetZipCdirCommentSize(const uint8_t *);
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uint64_t GetZipCfileUncompressedSize(const uint8_t *);
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uint64_t GetZipCfileCompressedSize(const uint8_t *);
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uint64_t GetZipCfileOffset(const uint8_t *);
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uint64_t GetZipLfileUncompressedSize(const uint8_t *);
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uint64_t GetZipLfileCompressedSize(const uint8_t *);
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void GetZipCfileTimestamps(const uint8_t *, struct timespec *,
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struct timespec *, struct timespec *, int);
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#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
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#endif /* COSMOPOLITAN_LIBC_ZIP_H_ */
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