Subversion Repositories planix.SVN

typedef struct ZipHead  ZipHead;

enum
{
        /*
         * magic numbers
         */
        ZHeader         = 0x04034b50,
        ZCHeader        = 0x02014b50,
        ZECHeader       = 0x06054b50,

        /*
         * "general purpose flag" bits
         */
        ZEncrypted      = 1 << 0,
        ZTrailInfo      = 1 << 3,       /* uncsize, csize, and crc are in trailer */
        ZCompPatch      = 1 << 5,       /* compression patched data */

        ZCrcPoly        = 0xedb88320,

        /*
         * compression method
         */
        ZDeflate        = 8,

        /*
         * internal file attributes
         */
        ZIsText         = 1 << 0,

        /*
         * file attribute interpretation, from high byte of version
         */
        ZDos            = 0,
        ZAmiga          = 1,
        ZVMS            = 2,
        ZUnix           = 3,
        ZVMCMS          = 4,
        ZAtariST        = 5,
        ZOS2HPFS        = 6,
        ZMac            = 7,
        ZZsys           = 8,
        ZCPM            = 9,
        ZNtfs           = 10,

        /*
         * external attribute flags for ZDos
         */
        ZDROnly         = 0x01,
        ZDHidden        = 0x02,
        ZDSystem        = 0x04,
        ZDVLable        = 0x08,
        ZDDir           = 0x10,
        ZDArch          = 0x20,

        ZHeadSize       = 4 + 2 + 2 + 2 + 2 + 2 + 4 + 4 + 4 + 2 + 2,
        ZHeadCrc        = 4 + 2 + 2 + 2 + 2 + 2,
        ZTrailSize      = 4 + 4 + 4,
        ZCHeadSize      = 4 + 2 + 2 + 2 + 2 + 2 + 2 + 4 + 4 + 4 + 2 + 2 + 2 + 2 + 2 + 4 + 4,
        ZECHeadSize     = 4 + 2 + 2 + 2 + 2 + 4 + 4 + 2,
};

/*
 * interesting info from a zip header
 */
struct ZipHead
{
        int     madeos;                 /* version made by */
        int     madevers;
        int     extos;                  /* version needed to extract */
        int     extvers;
        int     flags;                  /* general purpose bit flag */
        int     meth;
        int     modtime;
        int     moddate;
        ulong   crc;
        ulong   csize;
        ulong   uncsize;
        int     iattr;
        ulong   eattr;
        ulong   off;
        char    *file;
};