unzip.c

完整的解压zip文件的源码。包含密码功能

    if ((argc-- == 0) || error)
#endif
    {
        *pargc = argc;
        *pargv = argv;
#ifndef SFX
        if (uO.vflag >= 2 && argc == -1) {              /* "unzip -v" */
            show_version_info(__G);
            return PK_OK;
        }
        if (!G.noargs && !error)
            error = PK_PARAM;   /* had options (not -h or -v) but no zipfile */
#endif /* !SFX */
        return USAGE(error);
    }

#ifdef SFX
    /* print our banner unless we're being fairly quiet */
    if (uO.qflag < 2)
        Info(slide, error? 1 : 0, ((char *)slide, LoadFarString(UnzipSFXBanner),
          UZ_MAJORVER, UZ_MINORVER, PATCHLEVEL, BETALEVEL,
          LoadFarStringSmall(VersionDate)));
#ifdef BETA
    /* always print the beta warning:  no unauthorized distribution!! */
    Info(slide, error? 1 : 0, ((char *)slide, LoadFarString(BetaVersion), "\n",
      "SFX"));
#endif
#endif /* SFX */

    if (uO.cflag || uO.tflag || uO.vflag || uO.zflag
#ifdef TIMESTAMP
                                                     || uO.T_flag
#endif
                                                                 )
        G.extract_flag = FALSE;
    else
        G.extract_flag = TRUE;

    *pargc = argc;
    *pargv = argv;
    return PK_OK;

} /* end function uz_opts() */




/********************/
/* Function usage() */
/********************/

#ifdef SFX
#  ifdef VMS
#    define LOCAL "X.  Quote uppercase options"
#  endif
#  ifdef UNIX
#    define LOCAL "X"
#  endif
#  ifdef DOS_OS2_W32
#    define LOCAL "s$"
#  endif
#  ifdef FLEXOS
#    define LOCAL "s"
#  endif
#  ifdef AMIGA
#    define LOCAL "N"
#  endif
   /* Default for all other systems: */
#  ifndef LOCAL
#    define LOCAL ""
#  endif

#  ifdef MORE
#    define SFXOPT1 "M"
#  else
#    define SFXOPT1 ""
#  endif

int usage(__G__ error)   /* return PK-type error code */
    __GDEF
    int error;
{
    Info(slide, error? 1 : 0, ((char *)slide, LoadFarString(UnzipSFXBanner),
      UZ_MAJORVER, UZ_MINORVER, PATCHLEVEL, BETALEVEL,
      LoadFarStringSmall(VersionDate)));
    Info(slide, error? 1 : 0, ((char *)slide, LoadFarString(UnzipSFXOpts),
      SFXOPT1, LOCAL));
#ifdef BETA
    Info(slide, error? 1 : 0, ((char *)slide, LoadFarString(BetaVersion), "\n",
      "SFX"));
#endif

    if (error)
        return PK_PARAM;
    else
        return PK_COOL;     /* just wanted usage screen: no error */

} /* end function usage() */





#else /* !SFX */
#  ifdef VMS
#    define QUOT '\"'
#    define QUOTS "\""
#  else
#    define QUOT ' '
#    define QUOTS ""
#  endif

int usage(__G__ error)   /* return PK-type error code */
    __GDEF
    int error;
{
    int flag = (error? 1 : 0);


/*---------------------------------------------------------------------------
    Print either ZipInfo usage or UnZip usage, depending on incantation.
    (Strings must be no longer than 512 bytes for Turbo C, apparently.)
  ---------------------------------------------------------------------------*/

    if (uO.zipinfo_mode) {

#ifndef NO_ZIPINFO

        Info(slide, flag, ((char *)slide, LoadFarString(ZipInfoUsageLine1),
          ZI_MAJORVER, ZI_MINORVER, PATCHLEVEL, BETALEVEL,
          LoadFarStringSmall(VersionDate),
          LoadFarStringSmall2(ZipInfoExample), QUOTS,QUOTS));
        Info(slide, flag, ((char *)slide, LoadFarString(ZipInfoUsageLine2)));
        Info(slide, flag, ((char *)slide, LoadFarString(ZipInfoUsageLine3),
          QUOT,QUOT, QUOT,QUOT, LoadFarStringSmall(ZipInfoUsageLine4)));
#ifdef VMS
        Info(slide, flag, ((char *)slide, "\nRemember that non-lowercase\
 filespecs must be quoted in VMS (e.g., \"Makefile\").\n"));
#endif

#endif /* !NO_ZIPINFO */

    } else {   /* UnZip mode */

        Info(slide, flag, ((char *)slide, LoadFarString(UnzipUsageLine1),
          UZ_MAJORVER, UZ_MINORVER, PATCHLEVEL, BETALEVEL,
          LoadFarStringSmall(VersionDate)));
#ifdef BETA
        Info(slide, flag, ((char *)slide, LoadFarString(BetaVersion), "", ""));
#endif

        Info(slide, flag, ((char *)slide, LoadFarString(UnzipUsageLine2),
          ZIPINFO_MODE_OPTION, LoadFarStringSmall(ZipInfoMode)));
#ifdef VMS
        if (!error)  /* maybe no command-line tail found; show extra help */
            Info(slide, flag, ((char *)slide, LoadFarString(VMSusageLine2b)));
#endif

        Info(slide, flag, ((char *)slide, LoadFarString(UnzipUsageLine3),
          LoadFarStringSmall(local1)));

        Info(slide, flag, ((char *)slide, LoadFarString(UnzipUsageLine4),
          QUOT,QUOT, QUOT,QUOT, LoadFarStringSmall(local2), QUOT,QUOT,
          LoadFarStringSmall2(local3)));

        /* This is extra work for SMALL_MEM, but it will work since
         * LoadFarStringSmall2 uses the same buffer.  Remember, this
         * is a hack. */
        Info(slide, flag, ((char *)slide, LoadFarString(UnzipUsageLine5),
          LoadFarStringSmall(Example2), LoadFarStringSmall2(Example3),
          LoadFarStringSmall2(Example3)));

    } /* end if (uO.zipinfo_mode) */

    if (error)
        return PK_PARAM;
    else
        return PK_COOL;     /* just wanted usage screen: no error */

} /* end function usage() */

#endif /* ?SFX */




#ifndef SFX

/********************************/
/* Function show_version_info() */
/********************************/

static void show_version_info(__G)
    __GDEF
{
    if (uO.qflag > 3)                           /* "unzip -vqqqq" */
        Info(slide, 0, ((char *)slide, "%d\n",
          (UZ_MAJORVER*100 + UZ_MINORVER*10 + PATCHLEVEL)));
    else {
        char *envptr, *getenv();
        int numopts = 0;

        Info(slide, 0, ((char *)slide, LoadFarString(UnzipUsageLine1v),
          UZ_MAJORVER, UZ_MINORVER, PATCHLEVEL, BETALEVEL,
          LoadFarStringSmall(VersionDate)));
        Info(slide, 0, ((char *)slide,
          LoadFarString(UnzipUsageLine2v)));
        version(__G);
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptions)));
#ifdef ACORN_FTYPE_NFS
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(AcornFtypeNFS)));
        ++numopts;
#endif
#ifdef ASM_CRC
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(AsmCRC)));
        ++numopts;
#endif
#ifdef ASM_INFLATECODES
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(AsmInflateCodes)));
        ++numopts;
#endif
#ifdef CHECK_VERSIONS
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Check_Versions)));
        ++numopts;
#endif
#ifdef COPYRIGHT_CLEAN
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Copyright_Clean)));
        ++numopts;
#endif
#ifdef DEBUG
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(UDebug)));
        ++numopts;
#endif
#ifdef DEBUG_TIME
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(DebugTime)));
        ++numopts;
#endif
#ifdef DLL
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Dll)));
        ++numopts;
#endif
#ifdef DOSWILD
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(DosWild)));
        ++numopts;
#endif
#ifdef LZW_CLEAN
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(LZW_Clean)));
        ++numopts;
#endif
#ifndef MORE
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(No_More)));
        ++numopts;
#endif
#ifdef NO_ZIPINFO
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(No_ZipInfo)));
        ++numopts;
#endif
#ifdef NTSD_EAS
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(NTSDExtAttrib)));
        ++numopts;
#endif
#ifdef OS2_EAS
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(OS2ExtAttrib)));
        ++numopts;
#endif
#ifdef QLZIP
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(SMSExFldOnUnix)));
        ++numopts;
#endif
#ifdef REENTRANT
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Reentrant)));
        ++numopts;
#endif
#ifdef REGARGS
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(RegArgs)));
        ++numopts;
#endif
#ifdef RETURN_CODES
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Return_Codes)));
        ++numopts;
#endif
#ifdef SET_DIR_ATTRIB
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(SetDirAttrib)));
        ++numopts;
#endif
#ifdef TIMESTAMP
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(TimeStamp)));
        ++numopts;
#endif
#ifdef UNIXBACKUP
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(UnixBackup)));
        ++numopts;
#endif
#ifdef USE_EF_UT_TIME
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Use_EF_UT_time)));
        ++numopts;
#endif
#ifndef COPYRIGHT_CLEAN
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Use_Smith_Code)));
        ++numopts;
#endif
#ifndef LZW_CLEAN
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Use_Unshrink)));
        ++numopts;
#endif
#ifdef USE_VFAT
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(Use_VFAT_support)));
        ++numopts;
#endif
#ifdef USE_ZLIB
        sprintf((char *)(slide+256), LoadFarStringSmall(UseZlib),
          ZLIB_VERSION, zlib_version);
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          (char *)(slide+256)));
        ++numopts;
#endif
#ifdef VMS_TEXT_CONV
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(VmsTextConv)));
        ++numopts;
#endif
#ifdef VMSCLI
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(VmsCLI)));
        ++numopts;
#endif
#ifdef VMSWILD
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(VmsWild)));
        ++numopts;
#endif
#if CRYPT
# ifdef PASSWD_FROM_STDIN
        Info(slide, 0, ((char *)slide, LoadFarString(CompileOptFormat),
          LoadFarStringSmall(PasswdStdin)));
# endif
        Info(slide, 0, ((char *)slide, LoadFarString(Decryption),
          CR_MAJORVER, CR_MINORVER, CR_BETA_VER,
          LoadFarStringSmall(CryptDate)));
        ++numopts;
#endif /* CRYPT */
        if (numopts == 0)
            Info(slide, 0, ((char *)slide,
              LoadFarString(CompileOptFormat),
              LoadFarStringSmall(None)));

        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptions)));
        envptr = getenv(LoadFarStringSmall(EnvUnZip));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvUnZip),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
        envptr = getenv(LoadFarStringSmall(EnvUnZip2));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvUnZip2),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
        envptr = getenv(LoadFarStringSmall(EnvZipInfo));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvZipInfo),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
        envptr = getenv(LoadFarStringSmall(EnvZipInfo2));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvZipInfo2),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
#ifndef __RSXNT__
#ifdef __EMX__
        envptr = getenv(LoadFarStringSmall(EnvEMX));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvEMX),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
        envptr = getenv(LoadFarStringSmall(EnvEMXOPT));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvEMXOPT),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
#endif /* __EMX__ */
#if (defined(__GO32__) && (!defined(__DJGPP__) || (__DJGPP__ < 2)))
        envptr = getenv(LoadFarStringSmall(EnvGO32));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvGO32),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
        envptr = getenv(LoadFarStringSmall(EnvGO32TMP));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvGO32TMP),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
#endif /* __GO32__ && !(__DJGPP__ >= 2) */
#endif /* !__RSXNT__ */
#ifdef RISCOS
        envptr = getenv(LoadFarStringSmall(EnvUnZipExts));
        Info(slide, 0, ((char *)slide, LoadFarString(EnvOptFormat),
          LoadFarStringSmall(EnvUnZipExts),
          (envptr == (char *)NULL || *envptr == 0)?
          LoadFarStringSmall2(None) : envptr));
#endif /* RISCOS */
    }
} /* end function show_version() */

#endif /* !SFX */
#endif /* !WINDLL */