mirror of
https://github.com/zhigang1992/adm-zip.git
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5e4e4f8fca
The extra block of a file header can contain a ZIP64 that overrides some of the fields from the file header with longer values if the fields had been set to 0xffffffff (or 0xffff for the disk number). See sections 4.5.2, 4.5.3, 4.4.8, 4.4.9, 4.4.13 and 4.4.16 of the specification for reference. Closes cthackers/adm-zip#81 as fixed.
116 lines
4.5 KiB
JavaScript
116 lines
4.5 KiB
JavaScript
module.exports = {
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/* The local file header */
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LOCHDR : 30, // LOC header size
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LOCSIG : 0x04034b50, // "PK\003\004"
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LOCVER : 4, // version needed to extract
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LOCFLG : 6, // general purpose bit flag
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LOCHOW : 8, // compression method
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LOCTIM : 10, // modification time (2 bytes time, 2 bytes date)
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LOCCRC : 14, // uncompressed file crc-32 value
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LOCSIZ : 18, // compressed size
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LOCLEN : 22, // uncompressed size
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LOCNAM : 26, // filename length
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LOCEXT : 28, // extra field length
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/* The Data descriptor */
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EXTSIG : 0x08074b50, // "PK\007\008"
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EXTHDR : 16, // EXT header size
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EXTCRC : 4, // uncompressed file crc-32 value
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EXTSIZ : 8, // compressed size
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EXTLEN : 12, // uncompressed size
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/* The central directory file header */
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CENHDR : 46, // CEN header size
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CENSIG : 0x02014b50, // "PK\001\002"
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CENVEM : 4, // version made by
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CENVER : 6, // version needed to extract
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CENFLG : 8, // encrypt, decrypt flags
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CENHOW : 10, // compression method
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CENTIM : 12, // modification time (2 bytes time, 2 bytes date)
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CENCRC : 16, // uncompressed file crc-32 value
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CENSIZ : 20, // compressed size
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CENLEN : 24, // uncompressed size
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CENNAM : 28, // filename length
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CENEXT : 30, // extra field length
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CENCOM : 32, // file comment length
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CENDSK : 34, // volume number start
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CENATT : 36, // internal file attributes
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CENATX : 38, // external file attributes (host system dependent)
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CENOFF : 42, // LOC header offset
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/* The entries in the end of central directory */
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ENDHDR : 22, // END header size
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ENDSIG : 0x06054b50, // "PK\005\006"
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ENDSUB : 8, // number of entries on this disk
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ENDTOT : 10, // total number of entries
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ENDSIZ : 12, // central directory size in bytes
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ENDOFF : 16, // offset of first CEN header
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ENDCOM : 20, // zip file comment length
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/* Compression methods */
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STORED : 0, // no compression
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SHRUNK : 1, // shrunk
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REDUCED1 : 2, // reduced with compression factor 1
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REDUCED2 : 3, // reduced with compression factor 2
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REDUCED3 : 4, // reduced with compression factor 3
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REDUCED4 : 5, // reduced with compression factor 4
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IMPLODED : 6, // imploded
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// 7 reserved
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DEFLATED : 8, // deflated
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ENHANCED_DEFLATED: 9, // enhanced deflated
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PKWARE : 10,// PKWare DCL imploded
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// 11 reserved
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BZIP2 : 12, // compressed using BZIP2
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// 13 reserved
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LZMA : 14, // LZMA
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// 15-17 reserved
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IBM_TERSE : 18, // compressed using IBM TERSE
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IBM_LZ77 : 19, //IBM LZ77 z
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/* General purpose bit flag */
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FLG_ENC : 0, // encripted file
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FLG_COMP1 : 1, // compression option
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FLG_COMP2 : 2, // compression option
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FLG_DESC : 4, // data descriptor
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FLG_ENH : 8, // enhanced deflation
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FLG_STR : 16, // strong encryption
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FLG_LNG : 1024, // language encoding
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FLG_MSK : 4096, // mask header values
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/* Load type */
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FILE : 0,
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BUFFER : 1,
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NONE : 2,
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/* 4.5 Extensible data fields */
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EF_ID : 0,
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EF_SIZE : 2,
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/* Header IDs */
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ID_ZIP64 : 0x0001,
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ID_AVINFO : 0x0007,
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ID_PFS : 0x0008,
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ID_OS2 : 0x0009,
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ID_NTFS : 0x000a,
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ID_OPENVMS : 0x000c,
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ID_UNIX : 0x000d,
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ID_FORK : 0x000e,
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ID_PATCH : 0x000f,
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ID_X509_PKCS7 : 0x0014,
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ID_X509_CERTID_F : 0x0015,
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ID_X509_CERTID_C : 0x0016,
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ID_STRONGENC : 0x0017,
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ID_RECORD_MGT : 0x0018,
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ID_X509_PKCS7_RL : 0x0019,
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ID_IBM1 : 0x0065,
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ID_IBM2 : 0x0066,
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ID_POSZIP : 0x4690,
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EF_ZIP64_OR_32 : 0xffffffff,
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EF_ZIP64_OR_16 : 0xffff,
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EF_ZIP64_SUNCOMP : 0,
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EF_ZIP64_SCOMP : 8,
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EF_ZIP64_RHO : 16,
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EF_ZIP64_DSN : 24
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};
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