unzpriv.h

完整的解压zip文件的源码。包含密码功能

       ulg ucsize;
       ush filename_length;
       ush extra_field_length;
   } local_file_hdr;

#if 0
   typedef struct central_directory_file_header {     /* CENTRAL */
       uch version_made_by[2];
       uch version_needed_to_extract[2];
       ush general_purpose_bit_flag;
       ush compression_method;
       ulg last_mod_dos_datetime;
       ulg crc32;
       ulg csize;
       ulg ucsize;
       ush filename_length;
       ush extra_field_length;
       ush file_comment_length;
       ush disk_number_start;
       ush internal_file_attributes;
       ulg external_file_attributes;
       ulg relative_offset_local_header;
   } cdir_file_hdr;
#endif /* 0 */

   typedef struct end_central_dir_record {            /* END CENTRAL */
       ush number_this_disk;
       ush num_disk_start_cdir;
       ush num_entries_centrl_dir_ths_disk;
       ush total_entries_central_dir;
       ulg size_central_directory;
       ulg offset_start_central_directory;
       ush zipfile_comment_length;
   } ecdir_rec;


/* Huffman code lookup table entry--this entry is four bytes for machines
   that have 16-bit pointers (e.g. PC's in the small or medium model).
   Valid extra bits are 0..13.  e == 15 is EOB (end of block), e == 16
   means that v is a literal, 16 < e < 32 means that v is a pointer to
   the next table, which codes e - 16 bits, and lastly e == 99 indicates
   an unused code.  If a code with e == 99 is looked up, this implies an
   error in the data. */

struct huft {
    uch e;                /* number of extra bits or operation */
    uch b;                /* number of bits in this code or subcode */
    union {
        ush n;            /* literal, length base, or distance base */
        struct huft *t;   /* pointer to next level of table */
    } v;
};


typedef struct _APIDocStruct {
    char *compare;
    char *function;
    char *syntax;
    char *purpose;
} APIDocStruct;




/*************/
/*  Globals  */
/*************/

#if (defined(OS2) && !defined(FUNZIP))
#  include "os2/os2data.h"
#endif

#include "globals.h"



/*************************/
/*  Function Prototypes  */
/*************************/

/*---------------------------------------------------------------------------
    Functions in unzip.c (initialization routines):
  ---------------------------------------------------------------------------*/

#ifndef WINDLL
   int    MAIN                   OF((int argc, char **argv));
   int    unzip                  OF((__GPRO__ int argc, char **argv));
   int    uz_opts                OF((__GPRO__ int *pargc, char ***pargv));
   int    usage                  OF((__GPRO__ int error));
#endif /* !WINDLL */

/*---------------------------------------------------------------------------
    Functions in process.c (main driver routines):
  ---------------------------------------------------------------------------*/

int      process_zipfiles        OF((__GPRO));
void     free_G_buffers          OF((__GPRO));
/* static int    do_seekable     OF((__GPRO__ int lastchance)); */
/* static int    find_ecrec      OF((__GPRO__ long searchlen)); */
int      uz_end_central          OF((__GPRO));
int      process_cdir_file_hdr   OF((__GPRO));
int      get_cdir_ent            OF((__GPRO));
int      process_local_file_hdr  OF((__GPRO));
unsigned ef_scan_for_izux        OF((uch *ef_buf, unsigned ef_len, int ef_is_c,
                                     ulg dos_mdatetime,
                                     iztimes *z_utim, ush *z_uidgid));

#ifndef SFX

/*---------------------------------------------------------------------------
    Functions in zipinfo.c (`zipinfo-style' listing routines):
  ---------------------------------------------------------------------------*/

#ifndef NO_ZIPINFO
#ifndef WINDLL
   int   zi_opts                 OF((__GPRO__ int *pargc, char ***pargv));
#endif
int      zi_end_central          OF((__GPRO));
int      zipinfo                 OF((__GPRO));
/* static int      zi_long       OF((__GPRO__ ulg *pEndprev)); */
/* static int      zi_short      OF((__GPRO)); */
/* static char    *zi_time       OF((__GPRO__ ZCONST ulg *datetimez,
                                     ZCONST time_t *modtimez, char *d_t_str));*/
#endif /* !NO_ZIPINFO */

/*---------------------------------------------------------------------------
    Functions in list.c (generic zipfile-listing routines):
  ---------------------------------------------------------------------------*/

int      list_files              OF((__GPRO));
#ifdef TIMESTAMP
   int   get_time_stamp          OF((__GPRO__  time_t *last_modtime,
                                     unsigned *nmember));
#endif
int      ratio                   OF((ulg uc, ulg c));
void     fnprint                 OF((__GPRO));

#endif /* !SFX */

/*---------------------------------------------------------------------------
    Functions in fileio.c:
  ---------------------------------------------------------------------------*/

int      open_input_file      OF((__GPRO));
int      open_outfile         OF((__GPRO));                    /* also vms.c */
void     undefer_input        OF((__GPRO));
void     defer_leftover_input OF((__GPRO));
unsigned readbuf              OF((__GPRO__ char *buf, register unsigned len));
int      readbyte             OF((__GPRO));
int      fillinbuf            OF((__GPRO));
#ifdef FUNZIP
   int   flush                OF((__GPRO__ ulg size));  /* actually funzip.c */
#else
   int   flush                OF((__GPRO__ uch *buf, ulg size, int unshrink));
#endif
/* static int  disk_error     OF((__GPRO)); */
void     handler              OF((int signal));
time_t   dos_to_unix_time     OF((ulg dos_datetime));
int      check_for_newer      OF((__GPRO__ char *filename)); /* os2,vmcms,vms */
int      do_string            OF((__GPRO__ unsigned int len, int option));
ush      makeword             OF((ZCONST uch *b));
ulg      makelong             OF((ZCONST uch *sig));
#if (!defined(STR_TO_ISO) || defined(NEED_STR2ISO))
   char *str2iso              OF((char *dst, ZCONST char *src));
#endif
#if (!defined(STR_TO_OEM) || defined(NEED_STR2OEM))
   char *str2oem              OF((char *dst, ZCONST char *src));
#endif
int      zstrnicmp            OF((register ZCONST char *s1,
                                  register ZCONST char *s2,
                                  register unsigned n));
#ifdef REGULUS
   int zstat                  OF((char *p, struct stat *s));
#endif
#ifdef ZMEM   /* MUST be ifdef'd because of conflicts with the standard def. */
   zvoid *memset OF((register zvoid *, register int, register unsigned int));
   int    memcmp OF((register ZCONST zvoid*, register ZCONST zvoid *,
                     register unsigned int));
   zvoid *memcpy OF((register zvoid *, register ZCONST zvoid *,
                     register unsigned int));
#endif
#ifdef SMALL_MEM
   char *fLoadFarString       OF((__GPRO__ const char Far *sz));
   char *fLoadFarStringSmall  OF((__GPRO__ const char Far *sz));
   char *fLoadFarStringSmall2 OF((__GPRO__ const char Far *sz));
   #ifndef zfstrcpy
     char Far * Far zfstrcpy  OF((char Far *s1, const char Far *s2));
   #endif
#endif


/*---------------------------------------------------------------------------
    Functions in extract.c:
  ---------------------------------------------------------------------------*/

int    extract_or_test_files     OF((__GPRO));
/* static int   store_info          OF((void)); */
/* static int   extract_or_test_member   OF((__GPRO)); */
/* static int   TestExtraField   OF((__GPRO__ uch *ef, unsigned ef_len)); */
/* static int   test_OS2         OF((__GPRO__ uch *eb, unsigned eb_size)); */
/* static int   test_NT          OF((__GPRO__ uch *eb, unsigned eb_size)); */
int    memextract                OF((__GPRO__ uch *tgt, ulg tgtsize,
                                     uch *src, ulg srcsize));
int    memflush                  OF((__GPRO__ uch *rawbuf, ulg size));
char  *fnfilter                  OF((ZCONST char *raw, uch *space));

/*---------------------------------------------------------------------------
    Decompression functions:
  ---------------------------------------------------------------------------*/

#if (!defined(SFX) && !defined(FUNZIP))
int    explode                   OF((__GPRO));                  /* explode.c */
#endif
int    huft_free                 OF((struct huft *t));          /* inflate.c */
int    huft_build                OF((__GPRO__ ZCONST unsigned *b, unsigned n,
                                     unsigned s, ZCONST ush *d, ZCONST ush *e,
                                     struct huft **t, int *m));
#ifdef USE_ZLIB
   int    UZinflate              OF((__GPRO));                  /* inflate.c */
#  define inflate_free(x)        inflateEnd(&((Uz_Globs *)(&G))->dstrm)
#else
   int    inflate                OF((__GPRO));                  /* inflate.c */
   int    inflate_free           OF((__GPRO));                  /* inflate.c */
#endif /* ?USE_ZLIB */
#if (!defined(SFX) && !defined(FUNZIP))
void   unreduce                  OF((__GPRO));                 /* unreduce.c */
/* static void  LoadFollowers    OF((__GPRO__ f_array *follower, uch *Slen));
                                                                * unreduce.c */
int    unshrink                  OF((__GPRO));                 /* unshrink.c */
/* static void  partial_clear    OF((__GPRO));                  * unshrink.c */
#endif /* !SFX && !FUNZIP */

/*---------------------------------------------------------------------------
    Internal API functions (only included in DLL versions):
  ---------------------------------------------------------------------------*/

#ifdef DLL
   void     setFileNotFound       OF((__GPRO));                     /* api.c */
   int      unzipToMemory         OF((__GPRO__ char *zip, char *file,
                                      UzpBuffer *retstr));          /* api.c */
   int      redirect_outfile      OF((__GPRO));                     /* api.c */
   int      writeToMemory         OF((__GPRO__ uch *rawbuf, ulg size));
   int      close_redirect        OF((__GPRO));                     /* api.c */
   /* this obsolescent entry point kept for compatibility: */
   int      UzpUnzip              OF((int argc, char **argv));/* use UzpMain */
#ifdef OS2DLL
   int      varmessage            OF((__GPRO__ uch *buf, ulg size));
   int      varputchar            OF((__GPRO__ int c));         /* rexxapi.c */
   int      finish_REXX_redirect  OF((__GPRO));                 /* rexxapi.c */
#endif
#ifdef API_DOC
   void     APIhelp               OF((__GPRO__ int argc, char **argv));
#endif                                                          /* apihelp.c */
#endif /* DLL */

/*---------------------------------------------------------------------------
    Acorn RISC OS-only functions:
  ---------------------------------------------------------------------------*/

#ifdef RISCOS
   int   isRISCOSexfield     OF((void *extra_field));             /* acorn.c */
   void  setRISCOSexfield    OF((char *path, void *extra_field)); /* acorn.c */
   void  printRISCOSexfield  OF((int isdir, void *extra_field));  /* acorn.c */
#endif

/*---------------------------------------------------------------------------
    Human68K-only functions:
  ---------------------------------------------------------------------------*/

#ifdef __human68k__
   void  InitTwentyOne       OF((void));
#endif

/*---------------------------------------------------------------------------
    Macintosh-only functions:
  ---------------------------------------------------------------------------*/

#ifdef MACOS
   void    screenOpen        OF((char *));                    /* macscreen.c */
   void    screenControl     OF((char *, int));               /* macscreen.c */
   void    screenDump        OF((char *, long));              /* macscreen.c */
   void    screenUpdate      OF((WindowPtr));                 /* macscreen.c */
   void    screenClose       OF((void));                      /* macscreen.c */
   int     macgetch          OF((void));                      /* macscreen.c */

   int     macmkdir     OF((char *));                               /* mac.c */
   short   macopen      OF((char *, short));                        /* mac.c */
   short   maccreat     OF((char *));                               /* mac.c */
   short   macread      OF((short, char *, unsigned));              /* mac.c */
   long    macwrite     OF((short, char *, unsigned));              /* mac.c */
   short   macclose     OF((short));                                /* mac.c */
   long    maclseek     OF((short, long, short));                   /* mac.c */
   char   *macfgets     OF((char *, int, FILE *));                  /* mac.c */
   int     macfprintf   OF((FILE *, char *, ...));                  /* mac.c */
   int     macprintf    OF((char *, ...));                          /* mac.c */
#endif

/*---------------------------------------------------------------------------
    MSDOS-only functions:
  ---------------------------------------------------------------------------*/

#if (defined(MSDOS) && (defined(__GO32__) || defined(__EMX__)))
   unsigned _dos_getcountryinfo(void *);                          /* msdos.c */
#if (!defined(__DJGPP__) || (__DJGPP__ < 2))
   unsigned _dos_setftime(int, unsigned short, unsigned short);   /* msdos.c */
   unsigned _dos_setfileattr(char *, unsigned);                   /* msdos.c */
   unsigned _dos_creat(char *, unsigned, int *);                  /* msdos.c */
   void _dos_getdrive(unsigned *);                                /* msdos.c */
   unsigned _dos_close(int);                                      /* msdos.c */
#endif /* !__DJGPP__ || (__DJGPP__ < 2) */
#endif

/*---------------------------------------------------------------------------
    OS/2-only functions:
  ---------------------------------------------------------------------------*/

#ifdef OS2   /* GetFileTime conflicts with something in Win32 header files */
#if (defined(REENTRANT) && defined(USETHREADID))
   ulg   GetThreadId          OF((void));
#endif
   int   GetCountryInfo       OF((void));                           /* os2.c */
   long  GetFileTime          OF((ZCONST char *name));              /* os2.c */
/* static void  SetPathAttrTimes OF((__GPRO__ int flags, int dir));    os2.c */
/* static int   SetEAs        OF((__GPRO__ const char *path,
                                  void *eablock));                     os2.c */
/* static int   SetACL        OF((__GPRO__ const char *path,
                                  void *eablock));                     os2.c */
/* static int   IsFileNameValid OF((const char *name));                os2.c */
/* static void  map2fat       OF((char *pathcomp, char **pEndFAT));    os2.c */
/* static int   SetLongNameEA OF((char *name, char *longname));        os2.c */
/* static void  InitNLS       OF((void));                              os2.c */
   int   IsUpperNLS           OF((int nChr));                       /* os2.c */
   int   ToLowerNLS           OF((int nChr));                       /* os2.c */
   void  DebugMalloc          OF((void));                           /* os2.c */
#endif

/*---------------------------------------------------------------------------
    QDOS-only functions:
  ---------------------------------------------------------------------------*/

#ifdef QDOS
   int    QMatch              (uch, uch);
   void   QFilename           (__GPRO__ char *);
   char  *Qstrfix             (char *);
   int    QReturn             (int zip_error);
#endif

/*---------------------------------------------------------------------------
    TOPS20-only functions:
  ---------------------------------------------------------------------------*/

#ifdef TOPS20
   int    upper               OF((char *s));                     /* tops20.c */
   int    enquote             OF((char *s));                     /* tops20.c */
   int    dequote             OF((char *s));                     /* tops20.c */
   int    fnlegal             OF(()); /* error if prototyped? */ /* tops20.c */
#endif

/*---------------------------------------------------------------------------
    VM/CMS- and MVS-only functions:
  ---------------------------------------------------------------------------*/