unzpriv.h

完整的解压zip文件的源码。包含密码功能

    /*
     * ARGH.  MSC 7.0 libraries think times are based on 1899 Dec 31 00:00, not
     *  1970 Jan 1 00:00.  So we have to diddle time_t's appropriately:  add or
     *  subtract 70 years' worth of seconds; i.e., number of days times 86400;
     *  i.e., (70*365 regular days + 17 leap days + 1 1899 day) * 86400 ==
     *  (25550 + 17 + 1) * 86400 == 2209075200 seconds.  We know time_t is an
     *  unsigned long (ulg) on the only system with this bug.
     */
#    define TIMET_TO_NATIVE(x)  (x) += (ulg)2209075200L;
#    define NATIVE_TO_TIMET(x)  (x) -= (ulg)2209075200L;
#  endif
#  if (defined(__BORLANDC__) && (__BORLANDC__ >= 0x0450))
#    define timezone      _timezone
#  endif
#  if (defined(__GO32__) || defined(FLEXOS))
#    define DIR_END       '/'
#  else
#    define DIR_END       '\\'  /* OS uses '\\' as directory separator */
#    define DIR_END2      '/'   /* also check for '/' (RTL may convert) */
#  endif
#  ifndef WIN32
#    ifdef DATE_FORMAT
#      undef DATE_FORMAT
#    endif
#    define DATE_FORMAT   dateformat()
#  endif
#  define lenEOL          2
#  define PutNativeEOL    {*q++ = native(CR); *q++ = native(LF);}
#  define USE_EF_UT_TIME
#endif /* MSDOS || OS2 || FLEXOS */

/*---------------------------------------------------------------------------
    MTS section (piggybacks UNIX, I think):
  ---------------------------------------------------------------------------*/

#ifdef MTS
#  include <sys/types.h>      /* off_t, time_t, dev_t, ... */
#  include <sys/stat.h>
#  include <sys/file.h>       /* MTS uses this instead of fcntl.h */
#  include <timeb.h>
#  include <time.h>
#  include <unix.h>           /* some important non-ANSI routines */
#  define mkdir(s,n) (-1)     /* no "make directory" capability */
#  define EBCDIC              /* set EBCDIC conversion on */
#  define NO_STRNICMP         /* unzip's is as good the one in MTS */
#  define USE_FWRITE
#  define close_outfile()  fclose(G.outfile)   /* can't set time on files */
#  define umask(n)            /* don't have umask() on MTS */
#  define FOPWT         "w"   /* open file for writing in TEXT mode */
#  ifndef DATE_FORMAT
#    define DATE_FORMAT DF_MDY
#  endif
#  define lenEOL        1
#  define PutNativeEOL  *q++ = native(LF);
#endif /* MTS */

 /*---------------------------------------------------------------------------
    QDOS section
  ---------------------------------------------------------------------------*/

#ifdef QDOS
#  define DIRENT
#  include <fcntl.h>
#  include <unistd.h>
#  include <sys/stat.h>
#  include <time.h>
#  include "qdos/izqdos.h"
#  ifndef DATE_FORMAT
#    define DATE_FORMAT DF_MDY
#  endif
#  define lenEOL        1
#  define PutNativeEOL  *q++ = native(LF);
#  define DIR_END       '_'
#  define RETURN        QReturn
#  undef PATH_MAX
#  define PATH_MAX      36
#  if (!defined(NOTIMESTAMP) && !defined(TIMESTAMP))
#    define TIMESTAMP
#  endif
#endif

/*---------------------------------------------------------------------------
    Tandem NSK section:
  ---------------------------------------------------------------------------*/

#ifdef TANDEM
#  include "tandem.h"
#  include <fcntl.h>
   /* use a single LF delimiter so that writes to 101 text files work */
#  define PutNativeEOL  *q++ = native(LF);
#  define lenEOL        1
#  ifndef DATE_FORMAT
#    define DATE_FORMAT  DF_DMY
#  endif
#  define USE_EF_UT_TIME
#  define RESTORE_UIDGID
#endif

/*---------------------------------------------------------------------------
    TOPS-20 section:
  ---------------------------------------------------------------------------*/

#ifdef TOPS20
#  include <sys/types.h>        /* off_t, time_t, dev_t, ... */
#  include <sys/stat.h>
#  include <sys/param.h>
#  include <sys/time.h>
#  include <sys/timeb.h>
#  include <sys/file.h>
#  include <timex.h>
#  include <monsym.h>           /* get amazing monsym() macro */
   extern int open(), close(), read();
   extern int stat(), unlink(), jsys(), fcntl();
   extern long lseek(), dup(), creat();
#  define strchr    index       /* GRR: necessary? */
#  define strrchr   rindex
#  define REALLY_SHORT_SYMS
#  define NO_MKDIR
#  define DIR_BEG       '<'
#  define DIR_END       '>'
#  define DIR_EXT       ".directory"
#  ifndef DATE_FORMAT
#    define DATE_FORMAT DF_MDY
#  endif
#  define EXE_EXTENSION ".exe"  /* just a guess... */
#endif /* TOPS20 */

/*---------------------------------------------------------------------------
    Unix section:
  ---------------------------------------------------------------------------*/

#ifdef UNIX
#  include <sys/types.h>       /* off_t, time_t, dev_t, ... */
#  include <sys/stat.h>

#  ifndef COHERENT
#    include <fcntl.h>         /* O_BINARY for open() w/o CR/LF translation */
#  else /* COHERENT */
#    ifdef _I386
#      include <fcntl.h>       /* Coherent 4.0.x, Mark Williams C */
#    else
#      include <sys/fcntl.h>   /* Coherent 3.10, Mark Williams C */
#    endif
#    define SHORT_SYMS
#    ifndef __COHERENT__       /* Coherent 4.2 has tzset() */
#      define tzset  settz
#    endif
#  endif /* ?COHERENT */

#  ifndef NO_PARAM_H
#    ifdef NGROUPS_MAX
#      undef NGROUPS_MAX       /* SCO bug:  defined again in <sys/param.h> */
#    endif
#    ifdef BSD
#      define TEMP_BSD         /* may be defined again in <sys/param.h> */
#      undef BSD
#    endif
#    include <sys/param.h>     /* conflict with <sys/types.h>, some systems? */
#    ifdef TEMP_BSD
#      undef TEMP_BSD
#      ifndef BSD
#        define BSD
#      endif
#    endif
#  endif /* !NO_PARAM_H */

#  ifdef __osf__
#    define DIRENT
#    ifdef BSD
#      undef BSD
#    endif
#  endif /* __osf__ */

#  ifdef BSD
#    include <sys/time.h>
#    include <sys/timeb.h>
#    ifdef _AIX
#      include <time.h>
#    endif
#  else
#    include <time.h>
     struct tm *gmtime(), *localtime();
#  endif

#  if (defined(BSD4_4) || (defined(SYSV) && defined(MODERN)))
#    include <unistd.h>        /* this includes utime.h on SGIs */
#    if (defined(BSD4_4) || defined(linux))
#      include <utime.h>
#      define GOT_UTIMBUF
#    endif
#  endif

#  if (defined(V7) || defined(pyr_bsd))
#    define strchr   index
#    define strrchr  rindex
#  endif
#  ifdef V7
#    define O_RDONLY 0
#    define O_WRONLY 1
#    define O_RDWR   2
#  endif

#  ifdef MINIX
#    include <stdio.h>
#  endif
#  ifndef DATE_FORMAT
#    define DATE_FORMAT DF_MDY    /* GRR:  customize with locale.h somehow? */
#  endif
#  define lenEOL        1
#  ifdef EBCDIC
#    define PutNativeEOL  *q++ = '\n';
#  else
#    define PutNativeEOL  *q++ = native(LF);
#  endif
#  define SCREENLINES   screenlines()
#  define USE_EF_UT_TIME
#  define SET_DIR_ATTRIB
#  if (!defined(TIMESTAMP) && !defined(NOTIMESTAMP))   /* GRR 970513 */
#    define TIMESTAMP
#  endif
#  define RESTORE_UIDGID
#endif /* UNIX */

/*---------------------------------------------------------------------------
    VM/CMS and MVS section:
  ---------------------------------------------------------------------------*/

#ifdef CMS_MVS
#  include "vmmvs.h"
#  define CLOSE_INFILE()  close_infile(__G)
#endif

/*---------------------------------------------------------------------------
    VMS section:
  ---------------------------------------------------------------------------*/

#ifdef VMS
#  include <types.h>                    /* GRR:  experimenting... */
#  include <stat.h>
#  include <time.h>                     /* the usual non-BSD time functions */
#  include <file.h>                     /* same things as fcntl.h has */
#  include <unixio.h>
#  include <rms.h>
#  define _MAX_PATH (NAM$C_MAXRSS+1)    /* to define FILNAMSIZ below */
#  ifdef RETURN_CODES  /* VMS interprets standard PK return codes incorrectly */
#    define RETURN(ret) return_VMS(__G__ (ret))   /* verbose version */
#    define EXIT(ret)   return_VMS(__G__ (ret))
#  else
#    define RETURN      return_VMS                /* quiet version */
#    define EXIT        return_VMS
#  endif
#  ifdef VMSCLI
#    define USAGE(ret)  VMSCLI_usage(__G__ (ret))
#  endif
#  define DIR_BEG       '['
#  define DIR_END       ']'
#  define DIR_EXT       ".dir"
#  ifndef DATE_FORMAT
#    define DATE_FORMAT DF_MDY
#  endif
#  define lenEOL        1
#  define PutNativeEOL  *q++ = native(LF);
#  define SCREENLINES   screenlines()
#  if (defined(__VMS_VERSION) && !defined(VMS_VERSION))
#    define VMS_VERSION __VMS_VERSION
#  endif
#  if (defined(__VMS_VER) && !defined(__CRTL_VER))
#    define __CRTL_VER __VMS_VER
#  endif
#  if ((!defined(__CRTL_VER)) || (__CRTL_VER < 70000000))
#    define NO_GMTIME           /* gmtime() of earlier VMS C RTLs is broken */
#  else
#    if (!defined(NO_EF_UT_TIME) && !defined(USE_EF_UT_TIME))
#      define USE_EF_UT_TIME
#    endif
#  endif
#  if (!defined(NOTIMESTAMP) && !defined(TIMESTAMP))
#    define TIMESTAMP
#  endif
#  define RESTORE_UIDGID
#endif /* VMS */

/*---------------------------------------------------------------------------
    Win32 (Windows 95/NT) section:
  ---------------------------------------------------------------------------*/

#if (defined(WIN32) && !defined(POCKET_UNZIP))
#  include "win32/w32cfg.h"
#endif





/*************/
/*  Defines  */
/*************/

#define UNZIP_VERSION     20   /* compatible with PKUNZIP 2.0 */
#define VMS_UNZIP_VERSION 42   /* if OS-needed-to-extract is VMS:  can do */

#if (defined(MSDOS) || defined(OS2))
#  define DOS_OS2
#endif

#if (defined(OS2) || defined(WIN32))
#  define OS2_W32
#endif

#if (defined(DOS_OS2) || defined(WIN32))
#  define DOS_OS2_W32
#  define DOS_W32_OS2          /* historical:  don't use */
#endif

#if (defined(DOS_OS2_W32) || defined(__human68k__))
#  define DOS_H68_OS2_W32
#endif

#if (defined(DOS_OS2) || defined(FLEXOS))
#  define DOS_FLX_OS2
#endif

#if (defined(DOS_OS2_W32) || defined(FLEXOS))
#  define DOS_FLX_OS2_W32
#endif

#if (defined(DOS_H68_OS2_W32) || defined(FLEXOS))
#  define DOS_FLX_H68_OS2_W32
#endif

#if (defined(TOPS20) || defined(VMS))
#  define T20_VMS
#endif

#if (defined(MSDOS) || defined(T20_VMS))
#  define DOS_T20_VMS
#endif

/* clean up with a few defaults */
#ifndef DIR_END
#  define DIR_END       '/'     /* last char before program name or filename */
#endif
#ifndef DATE_FORMAT
#  define DATE_FORMAT   DF_MDY  /* defaults to US convention */
#endif
#ifndef CLOSE_INFILE
#  define CLOSE_INFILE()  close(G.zipfd)
#endif
#ifndef RETURN
#  define RETURN        return  /* only used in main() */
#endif
#ifndef EXIT
#  define EXIT          exit
#endif
#ifndef USAGE
#  define USAGE(ret)    usage(__G__ (ret))    /* used in unzip.c, zipinfo.c */
#endif
#ifndef TIMET_TO_NATIVE         /* everybody but MSC 7.0 and Macintosh */
#  define TIMET_TO_NATIVE(x)
#  define NATIVE_TO_TIMET(x)
#endif

#if (defined(DOS_FLX_OS2_W32) || defined(UNIX) || defined(RISCOS))
#  ifndef HAVE_UNLINK
#    define HAVE_UNLINK
#  endif