unzpriv.h

压缩解压,是unzip540的升级,这个外国网站摘来的源码,是evb编写.

#ifndef PATH_MAX
#  ifdef MAXPATHLEN
#    define PATH_MAX      MAXPATHLEN    /* in <sys/param.h> on some systems */
#  else
#    ifdef _MAX_PATH
#      define PATH_MAX    _MAX_PATH
#    else
#      if FILENAME_MAX > 255
#        define PATH_MAX  FILENAME_MAX  /* used like PATH_MAX on some systems */
#      else
#        define PATH_MAX  1024
#      endif
#    endif /* ?_MAX_PATH */
#  endif /* ?MAXPATHLEN */
#endif /* !PATH_MAX */

#define FILNAMSIZ  PATH_MAX

/* DBCS support for Info-ZIP  (mainly for japanese (-: )
 * by Yoshioka Tsuneo ([e-mail],[e-mail])
 */
#ifdef _MBCS
#  include <locale.h>
   /* Multi Byte Character Set */
#  define ___MBS_TMP_DEF  char *___tmp_ptr;
#  define ___TMP_PTR      ___tmp_ptr
#  define CLEN(ptr) mblen((ZCONST char *)(ptr), MB_CUR_MAX)
#  ifndef PREINCSTR
#    define PREINCSTR(ptr) (ptr += CLEN(ptr))
#  endif
#  define POSTINCSTR(ptr) (___TMP_PTR=(char *)(ptr), PREINCSTR(ptr),___TMP_PTR)
   char *plastchar OF((ZCONST char *ptr, extent len));
#  define lastchar(ptr, len) ((int)(unsigned)*plastchar(ptr, len))
#  ifndef MBSCHR
#    define NEED_UZMBSCHR
#    define MBSCHR(str,c) (char *)uzmbschr((ZCONST unsigned char *)(str), c)
#  endif
#  ifndef MBSRCHR
#    define NEED_UZMBSRCHR
#    define MBSRCHR(str,c) (char *)uzmbsrchr((ZCONST unsigned char *)(str), c)
#  endif
#  define SETLOCALE(category, locale) setlocale(category, locale)
#else /* !_MBCS */
#  define ___MBS_TMP_DEF
#  define ___TMP_PTR
#  define CLEN(ptr) 1
#  define PREINCSTR(ptr) (++(ptr))
#  define POSTINCSTR(ptr) ((ptr)++)
#  define plastchar(ptr, len) (&ptr[(len)-1])
#  define lastchar(ptr, len) (ptr[(len)-1])
#  define MBSCHR(str, c) strchr(str, c)
#  define MBSRCHR(str, c) strrchr(str, c)
#  define SETLOCALE(category, locale)
#endif /* ?_MBCS */
#define INCSTR(ptr) PREINCSTR(ptr)


#if (defined(MALLOC_WORK) && !defined(MY_ZCALLOC))
   /* Any system without a special calloc function */
# ifndef zcalloc
#  define zcalloc(items, size) \
          (zvoid far *)calloc((unsigned)(items), (unsigned)(size))
# endif
# ifndef zcfree
#  define zcfree    free
# endif
#endif /* MALLOC_WORK && !MY_ZCALLOC */

#ifdef REGULUS  /* returns the inode number on success(!)...argh argh argh */
#  define stat(p,s) zstat((p),(s))
#endif

#if (defined(CRAY) && defined(ZMEM))
#  undef ZMEM
#endif

#ifdef ZMEM
#  undef ZMEM
#  define memcmp(b1,b2,len)      bcmp(b2,b1,len)
#  define memcpy(dest,src,len)   bcopy(src,dest,len)
#  define memzero                bzero
#else
#  define memzero(dest,len)      memset(dest,0,len)
#endif

#ifndef TRUE
#  define TRUE      1   /* sort of obvious */
#endif
#ifndef FALSE
#  define FALSE     0
#endif

#ifndef SEEK_SET
#  define SEEK_SET  0
#  define SEEK_CUR  1
#  define SEEK_END  2
#endif

#if (!defined(S_IEXEC) && defined(S_IXUSR))
#  define S_IEXEC   S_IXUSR
#endif

#if (defined(UNIX) && defined(S_IFLNK) && !defined(MTS))
#  define SYMLINKS
#  ifndef S_ISLNK
#    define S_ISLNK(m)  (((m) & S_IFMT) == S_IFLNK)
#  endif
#endif /* UNIX && S_IFLNK && !MTS */

#ifndef S_ISDIR
#  ifdef CMS_MVS
#    define S_ISDIR(m)  (FALSE)
#  else
#    define S_ISDIR(m)  (((m) & S_IFMT) == S_IFDIR)
# endif
#endif

#ifndef IS_VOLID
#  define IS_VOLID(m)  ((m) & 0x08)
#endif


#ifdef SHORT_SYMS                   /* Mark Williams C, ...? */
#  define extract_or_test_files     xtr_or_tst_files
#  define extract_or_test_member    xtr_or_tst_member
#endif

#ifdef REALLY_SHORT_SYMS            /* TOPS-20 linker:  first 6 chars */
#  define process_cdir_file_hdr     XXpcdfh
#  define process_local_file_hdr    XXplfh
#  define extract_or_test_files     XXxotf  /* necessary? */
#  define extract_or_test_member    XXxotm  /* necessary? */
#  define check_for_newer           XXcfn
#  define overwrite_all             XXoa
#  define process_all_files         XXpaf
#  define extra_field               XXef
#  define explode_lit8              XXel8
#  define explode_lit4              XXel4
#  define explode_nolit8            XXnl8
#  define explode_nolit4            XXnl4
#  define cpdist8                   XXcpdist8
#  define inflate_codes             XXic
#  define inflate_stored            XXis
#  define inflate_fixed             XXif
#  define inflate_dynamic           XXid
#  define inflate_block             XXib
#  define maxcodemax                XXmax
#endif

#ifndef S_TIME_T_MAX            /* max value of signed (>= 32-bit) time_t */
#  define S_TIME_T_MAX  ((time_t)(ulg)0x7fffffffL)
#endif
#ifndef U_TIME_T_MAX            /* max value of unsigned (>= 32-bit) time_t */
#  define U_TIME_T_MAX  ((time_t)(ulg)0xffffffffL)
#endif
#ifdef DOSTIME_MINIMUM          /* min DOSTIME value (1980-01-01) */
#  undef DOSTIME_MINIMUM
#endif
#define DOSTIME_MINIMUM ((ulg)0x00210000L)
#ifdef DOSTIME_2038_01_18       /* approximate DOSTIME equivalent of */
#  undef DOSTIME_2038_01_18     /*  the signed-32-bit time_t limit */
#endif
#define DOSTIME_2038_01_18 ((ulg)0x74320000L)

#ifdef QDOS
#  define ZSUFX         "_zip"
#  define ALT_ZSUFX     ".zip"
#else
#  ifdef RISCOS
#    define ZSUFX       "/zip"
#  else
#    define ZSUFX       ".zip"
#  endif
#  define ALT_ZSUFX     ".ZIP"   /* Unix-only so far (only case-sensitive fs) */
#endif

#define CENTRAL_HDR_SIG   "\001\002"   /* the infamous "PK" signature bytes, */
#define LOCAL_HDR_SIG     "\003\004"   /*  w/o "PK" (so unzip executable not */
#define END_CENTRAL_SIG   "\005\006"   /*  mistaken for zipfile itself) */
#define EXTD_LOCAL_SIG    "\007\010"   /* [ASCII "\113" == EBCDIC "\080" ??] */

/** internal-only return codes **/
#define IZ_DIR            76   /* potential zipfile is a directory */
/* special return codes for mapname() */
#define MPN_OK            0      /* mapname successful */
#define MPN_INF_TRUNC    (1<<8)  /* caution - filename truncated */
#define MPN_INF_SKIP     (2<<8)  /* info  - skipped because nothing to do */
#define MPN_ERR_SKIP     (3<<8)  /* error - entry skipped */
#define MPN_ERR_TOOLONG  (4<<8)  /* error - path too long */
#define MPN_NOMEM        (10<<8) /* error - out of memory, file skipped */
#define MPN_CREATED_DIR  (16<<8) /* directory created: set time & permission */
#define MPN_VOL_LABEL    (17<<8) /* volume label, but can't set on hard disk */
#define MPN_INVALID      (99<<8) /* internal logic error, should never reach */
/* mask for internal mapname&checkdir return codes */
#define MPN_MASK          0x7F00
/* error code for extracting/testing extra field blocks */
#define IZ_EF_TRUNC       79   /* local extra field truncated (PKZIP'd) */

/* choice of activities for do_string() */
#define SKIP              0             /* skip header block */
#define DISPLAY           1             /* display archive comment (ASCII) */
#define DISPL_8           5             /* display file comment (ext. ASCII) */
#define DS_FN             2             /* read filename (ext. ASCII, chead) */
#define DS_FN_C           2             /* read filename from central header */
#define DS_FN_L           6             /* read filename from local header */
#define EXTRA_FIELD       3             /* copy extra field into buffer */
#define DS_EF             3
#ifdef AMIGA
#  define FILENOTE        4             /* convert file comment to filenote */
#endif
#if (defined(SFX) && defined(CHEAP_SFX_AUTORUN))
#  define CHECK_AUTORUN   7             /* copy command, display remainder */
#  define CHECK_AUTORUN_Q 8             /* copy command, skip remainder */
#endif

#define DOES_NOT_EXIST    -1   /* return values for check_for_newer() */
#define EXISTS_AND_OLDER  0
#define EXISTS_AND_NEWER  1

#define OVERWRT_QUERY     0    /* status values for G.overwrite_mode */
#define OVERWRT_ALWAYS    1
#define OVERWRT_NEVER     2

#define IS_OVERWRT_ALL    (G.overwrite_mode == OVERWRT_ALWAYS)
#define IS_OVERWRT_NONE   (G.overwrite_mode == OVERWRT_NEVER)

#define ROOT              0    /* checkdir() extract-to path:  called once */
#define INIT              1    /* allocate buildpath:  called once per member */
#define APPEND_DIR        2    /* append a dir comp.:  many times per member */
#define APPEND_NAME       3    /* append actual filename:  once per member */
#define GETPATH           4    /* retrieve the complete path and free it */
#define END               5    /* free root path prior to exiting program */

/* version_made_by codes (central dir):  make sure these */
/*  are not defined on their respective systems!! */
#define FS_FAT_           0    /* filesystem used by MS-DOS, OS/2, Win32 */
#define AMIGA_            1
#define VMS_              2
#define UNIX_             3
#define VM_CMS_           4
#define ATARI_            5    /* what if it's a minix filesystem? [cjh] */
#define FS_HPFS_          6    /* filesystem used by OS/2 (and NT 3.x) */
#define MAC_              7    /* HFS filesystem used by MacOS */
#define Z_SYSTEM_         8
#define CPM_              9
#define TOPS20_           10
#define FS_NTFS_          11   /* filesystem used by Windows NT */
#define QDOS_             12
#define ACORN_            13   /* Archimedes Acorn RISC OS */
#define FS_VFAT_          14   /* filesystem used by Windows 95, NT */
#define MVS_              15
#define BEOS_             16   /* hybrid POSIX/database filesystem */
#define TANDEM_           17   /* Tandem NSK */
#define THEOS_            18   /* THEOS */
#define MAC_OSX_          19   /* Mac OS/X (Darwin) */
#define ATHEOS_           30   /* AtheOS */
#define NUM_HOSTS         31   /* index of last system + 1 */
/* don't forget to update zipinfo.c appropiately if NUM_HOSTS changes! */

#define STORED            0    /* compression methods */
#define SHRUNK            1
#define REDUCED1          2
#define REDUCED2          3
#define REDUCED3          4
#define REDUCED4          5
#define IMPLODED          6
#define TOKENIZED         7
#define DEFLATED          8
#define ENHDEFLATED       9
#define DCLIMPLODED      10
#define PKRESMOD11       11
#define BZIP2ED          12
#define NUM_METHODS      13    /* index of last method + 1 */
/* don't forget to update list_files(), extract.c and zipinfo.c appropriately
 * if NUM_METHODS changes */

/* (the PK-class error codes are public and have been moved into unzip.h) */

#define DF_MDY            0    /* date format 10/26/91 (USA only) */
#define DF_DMY            1    /* date format 26/10/91 (most of the world) */
#define DF_YMD            2    /* date format 91/10/26 (a few countries) */

/*---------------------------------------------------------------------------
    Extra-field block ID values and offset info.
  ---------------------------------------------------------------------------*/
/* extra-field ID values, all little-endian: */
#define EF_PKSZ64    0x0001    /* PKWARE's 64-bit filesize extensions */
#define EF_AV        0x0007    /* PKWARE's authenticity verification */
#define EF_OS2       0x0009    /* OS/2 extended attributes */
#define EF_PKW32     0x000a    /* PKWARE's Win95/98/WinNT filetimes */
#define EF_PKVMS     0x000c    /* PKWARE's VMS */
#define EF_PKUNIX    0x000d    /* PKWARE's Unix */
#define EF_IZVMS     0x4d49    /* Info-ZIP's VMS ("IM") */
#define EF_IZUNIX    0x5855    /* Info-ZIP's old Unix[1] ("UX") */
#define EF_IZUNIX2   0x7855    /* Info-ZIP's new Unix[2] ("Ux") */
#define EF_TIME      0x5455    /* universal timestamp ("UT") */
#define EF_MAC3      0x334d    /* Info-ZIP's new Macintosh (= "M3") */
#define EF_JLMAC     0x07c8    /* Johnny Lee's old Macintosh (= 1992) */
#define EF_ZIPIT     0x2605    /* Thomas Brown's Macintosh (ZipIt) */
#define EF_ZIPIT2    0x2705    /* T. Brown's Mac (ZipIt) v 1.3.8 and newer ? */
#define EF_SMARTZIP  0x4d63    /* Mac SmartZip by Marco Bambini */
#define EF_VMCMS     0x4704    /* Info-ZIP's VM/CMS ("\004G") */
#define EF_MVS       0x470f    /* Info-ZIP's MVS ("\017G") */
#define EF_ACL       0x4c41    /* (OS/2) access control list ("AL") */
#define EF_NTSD      0x4453    /* NT security descriptor ("SD") */
#define EF_ATHEOS    0x7441    /* AtheOS ("At") */
#define EF_BEOS      0x6542    /* BeOS ("Be") */
#define EF_QDOS      0xfb4a    /* SMS/QDOS ("J\373") */
#define EF_AOSVS     0x5356    /* AOS/VS ("VS") */
#define EF_SPARK     0x4341    /* David Pilling's Acorn/SparkFS ("AC") */
#define EF_TANDEM    0x4154    /* Tandem NSK ("TA") */
#define EF_THEOS     0x6854    /* Jean-Michel Dubois' Theos "Th" */
#define EF_THEOSO    0x4854    /* old Theos port */
#define EF_MD5       0x4b46    /* Fred Kantor's MD5 ("FK") */
#define EF_ASIUNIX   0x756e    /* ASi's Unix ("nu") */

#define EB_HEADSIZE       4    /* length of extra field block header */
#define EB_ID             0    /* offset of block ID in header */
#define EB_LEN            2    /* offset of data length field in header */
#define EB_UCSIZE_P       0    /* offset of ucsize field in compr. data */
#define EB_CMPRHEADLEN    6    /* lenght of compression header */

#define EB_UX_MINLEN      8    /* minimal "UX" field contains atime, mtime */
#define EB_UX_FULLSIZE    12   /* full "UX" field (atime, mtime, uid, gid) */
#define EB_UX_ATIME       0    /* offset of atime in "UX" extra field data */
#define EB_UX_MTIME       4    /* offset of mtime in "UX" extra field data */
#define EB_UX_UID         8    /* byte offset of UID in "UX" field data */
#define EB_UX_GID         10   /* byte offset of GID in "UX" field data */

#define EB_UX2_MINLEN     4    /* minimal "Ux" field contains UID/GID */
#define EB_UX2_UID        0    /* byte offset of UID in "Ux" field data */
#define EB_UX2_GID        2    /* byte offset of GID in "Ux" field data */
#define EB_UX2_VALID      (1 << 8)      /* UID/GID present */

#define EB_UT_MINLEN      1    /* minimal UT field contains Flags byte */
#define EB_UT_FLAGS       0    /* byte offset of Flags field */
#define EB_UT_TIME1       1    /* byte offset of 1st time value */
#define EB_UT_FL_MTIME    (1 << 0)      /* mtime present */
#define EB_UT_FL_ATIME    (1 << 1)      /* atime present */
#define EB_UT_FL_CTIME    (1 << 2)      /* ctime present */

#define EB_FLGS_OFFS      4    /* offset of flags area in generic compressed
                                  extra field blocks (BEOS, MAC, and others) */
#define EB_OS2_HLEN       4    /* size of OS2/ACL compressed data header */
#define EB_BEOS_HLEN      5    /* length of BeOS&AtheOS e.f attribute header */
#define EB_BE_FL_UNCMPR   0x01 /* "BeOS&AtheOS attribs uncompr." bit flag */
#define EB_MAC3_HLEN      14   /* length of Mac3 attribute block header */
#define EB_SMARTZIP_HLEN  64   /* fixed length of the SmartZip extra field */
#define EB_M3_FL_DATFRK   0x01 /* "this entry is data fork" flag */
#define EB_M3_FL_UNCMPR   0x04 /* "Mac3 attributes uncompressed" bit flag */
#define EB_M3_FL_TIME64   0x08 /* "Mac3 time fields are 64 bit wide" flag */
#define EB_M3_FL_NOUTC    0x10 /* "Mac3 timezone offset fields missing" flag */

#define EB_NTSD_C_LEN     4    /* length of central NT security data */
#define EB_NTSD_L_LEN     5    /* length of minimal local NT security data */
#define EB_NTSD_VERSION   4    /* offset of NTSD version byte */
#define EB_NTSD_MAX_VER   (0)  /* maximum version # we know how to handle */

#define EB_ASI_CRC32      0    /* offset of ASI Unix field's crc32 checksum */
#define EB_ASI_MODE       4    /* offset of ASI Unix permission mode field */

#define EB_IZVMS_HLEN     12   /* length of IZVMS attribute block header */
#define EB_IZVMS_FLGS     4    /* offset of compression type flag */
#define EB_IZVMS_UCSIZ    6    /* offset of ucsize field in IZVMS header */
#define EB_IZVMS_BCMASK   07   /* 3 bits for compression type */
#define EB_IZVMS_BCSTOR   0    /*  Stored */
#define EB_IZVMS_BC00     1    /*  0byte -> 0bit compression */
#define EB_IZVMS_BCDEFL   2    /*  Deflated */


/*---------------------------------------------------------------------------
    True sizes of the various headers, as defined by PKWARE--so it is not
    likely that these will ever change.  But if they do, make sure both these
    defines AND the typedefs below get updated accordingly.
  ---------------------------------------------------------------------------*/
#define LREC_SIZE   26   /* lengths of local file headers, central */
#define CREC_SIZE   42   /*  directory headers, and the end-of-    */
#define ECREC_SIZE  18   /*  central-dir record, respectively      */

#define MAX_BITS    13                 /* used in unshrink() */
#define HSIZE       (1 << MAX_BITS)    /* size of global work area */