Commit message: Fix bug in undefer_input() that misplaced the input state.
CVE: CVE-2019-13232
CWE: CWE-400
Vulnerability description: Info-ZIP UnZip 6.0 mishandles the overlapping of files inside a ZIP container, leading to denial of service (resource consumption), aka a "better zip bomb" issue.

Project: unzip
File: fileio.c

int zstrnicmp(s1, s2, n)
    register ZCONST char *s1, *s2;
    register unsigned n;
{
    for (; n > 0;  --n, ++s1, ++s2) {

        if (ToLower(*s1) != ToLower(*s2))
            /* test includes early termination of one string */
            return ((uch)ToLower(*s1) < (uch)ToLower(*s2))? -1 : 1;

        if (*s1 == '\0')   /* both strings terminate early */
            return 0;
    }
    return 0;
}

Project: unzip
File: fileio.c

static int disk_error(__G)
    __GDEF
{
    /* OK to use slide[] here because this file is finished regardless */
    Info(slide, 0x4a1, ((char *)slide, LoadFarString(DiskFullQuery),
      FnFilter1(G.filename)));

#ifndef WINDLL
    fgets(G.answerbuf, sizeof(G.answerbuf), stdin);
    if (*G.answerbuf == 'y')   /* stop writing to this file */
        G.disk_full = 1;       /*  (outfile bad?), but new OK */
    else
#endif
        G.disk_full = 2;       /* no:  exit program */

    return PK_DISK;

} /* end function disk_error() */

Project: unzip
File: fileio.c

int UZ_EXP UzpMessageNull(pG, buf, size, flag)
    zvoid *pG;    /* globals struct:  always passed */
    uch *buf;     /* preformatted string to be printed */
    ulg size;     /* length of string (may include nulls) */
    int flag;     /* flag bits */
{
    return 0;

} /* end function UzpMessageNull() */

Project: unzip
File: fileio.c

int check_for_newer(__G__ filename)  /* return 1 if existing file is newer */
    __GDEF                           /*  or equal; 0 if older; -1 if doesn't */
    char *filename;                  /*  exist yet */
{
    time_t existing, archive;
#ifdef USE_EF_UT_TIME
    iztimes z_utime;
#endif
#ifdef AOS_VS
    long    dyy, dmm, ddd, dhh, dmin, dss;


    dyy = (lrec.last_mod_dos_datetime >> 25) + 1980;
    dmm = (lrec.last_mod_dos_datetime >> 21) & 0x0f;
    ddd = (lrec.last_mod_dos_datetime >> 16) & 0x1f;
    dhh = (lrec.last_mod_dos_datetime >> 11) & 0x1f;
    dmin = (lrec.last_mod_dos_datetime >> 5) & 0x3f;
    dss = (lrec.last_mod_dos_datetime & 0x1f) * 2;

    /* under AOS/VS, file times can only be set at creation time,
     * with the info in a special DG format.  Make sure we can create
     * it here - we delete it later & re-create it, whether or not
     * it exists now.
     */
    if (!zvs_create(filename, (((ulg)dgdate(dmm, ddd, dyy)) << 16) |
        (dhh*1800L + dmin*30L + dss/2L), -1L, -1L, (char *) -1, -1, -1, -1))
        return DOES_NOT_EXIST;
#endif /* AOS_VS */

    Trace((stderr, "check_for_newer:  doing stat(%s)\n", FnFilter1(filename)));
    if (SSTAT(filename, &G.statbuf)) {
        Trace((stderr,
          "check_for_newer:  stat(%s) returns %d:  file does not exist\n",
          FnFilter1(filename), SSTAT(filename, &G.statbuf)));
#ifdef SYMLINKS
        Trace((stderr, "check_for_newer:  doing lstat(%s)\n",
          FnFilter1(filename)));
        /* GRR OPTION:  could instead do this test ONLY if G.symlnk is true */
        if (lstat(filename, &G.statbuf) == 0) {
            Trace((stderr,
              "check_for_newer:  lstat(%s) returns 0:  symlink does exist\n",
              FnFilter1(filename)));
            if (QCOND2 && !IS_OVERWRT_ALL)
                Info(slide, 0, ((char *)slide, LoadFarString(FileIsSymLink),
                  FnFilter1(filename), " with no real file"));
            return EXISTS_AND_OLDER;   /* symlink dates are meaningless */
        }
#endif /* SYMLINKS */
        return DOES_NOT_EXIST;
    }
    Trace((stderr, "check_for_newer:  stat(%s) returns 0:  file exists\n",
      FnFilter1(filename)));

#ifdef SYMLINKS
    /* GRR OPTION:  could instead do this test ONLY if G.symlnk is true */
    if (lstat(filename, &G.statbuf) == 0 && S_ISLNK(G.statbuf.st_mode)) {
        Trace((stderr, "check_for_newer:  %s is a symbolic link\n",
          FnFilter1(filename)));
        if (QCOND2 && !IS_OVERWRT_ALL)
            Info(slide, 0, ((char *)slide, LoadFarString(FileIsSymLink),
              FnFilter1(filename), ""));
        return EXISTS_AND_OLDER;   /* symlink dates are meaningless */
    }
#endif /* SYMLINKS */

    NATIVE_TO_TIMET(G.statbuf.st_mtime)   /* NOP unless MSC 7.0 or Macintosh */

#ifdef USE_EF_UT_TIME
    /* The `Unix extra field mtime' should be used for comparison with the
     * time stamp of the existing file >>>ONLY<<< when the EF info is also
     * used to set the modification time of the extracted file.
     */
    if (G.extra_field &&
#ifdef IZ_CHECK_TZ
        G.tz_is_valid &&
#endif
        (ef_scan_for_izux(G.extra_field, G.lrec.extra_field_length, 0,
                          G.lrec.last_mod_dos_datetime, &z_utime, NULL)
         & EB_UT_FL_MTIME))
    {
        TTrace((stderr, "check_for_newer:  using Unix extra field mtime\n"));
        existing = G.statbuf.st_mtime;
        archive  = z_utime.mtime;
    } else {
        /* round up existing filetime to nearest 2 seconds for comparison,
         * but saturate in case of arithmetic overflow
         */
        existing = ((G.statbuf.st_mtime & 1) &&
                    (G.statbuf.st_mtime + 1 > G.statbuf.st_mtime)) ?
                   G.statbuf.st_mtime + 1 : G.statbuf.st_mtime;
        archive  = dos_to_unix_time(G.lrec.last_mod_dos_datetime);
    }
#else /* !USE_EF_UT_TIME */
    /* round up existing filetime to nearest 2 seconds for comparison,
     * but saturate in case of arithmetic overflow
     */
    existing = ((G.statbuf.st_mtime & 1) &&
                (G.statbuf.st_mtime + 1 > G.statbuf.st_mtime)) ?
               G.statbuf.st_mtime + 1 : G.statbuf.st_mtime;
    archive  = dos_to_unix_time(G.lrec.last_mod_dos_datetime);
#endif /* ?USE_EF_UT_TIME */

    TTrace((stderr, "check_for_newer:  existing %lu, archive %lu, e-a %ld\n",
      (ulg)existing, (ulg)archive, (long)(existing-archive)));

    return (existing >= archive);

} /* end function check_for_newer() */

Project: unzip
File: fileio.c

int do_string(__G__ length, option)   /* return PK-type error code */
    __GDEF
    unsigned int length;        /* without prototype, ush converted to this */
    int option;
{
    unsigned comment_bytes_left;
    unsigned int block_len;
    int error=PK_OK;
#ifdef AMIGA
    char tmp_fnote[2 * AMIGA_FILENOTELEN];   /* extra room for squozen chars */
#endif


/*---------------------------------------------------------------------------
    This function processes arbitrary-length (well, usually) strings.  Four
    major options are allowed:  SKIP, wherein the string is skipped (pretty
    logical, eh?); DISPLAY, wherein the string is printed to standard output
    after undergoing any necessary or unnecessary character conversions;
    DS_FN, wherein the string is put into the filename[] array after under-
    going appropriate conversions (including case-conversion, if that is
    indicated: see the global variable pInfo->lcflag); and EXTRA_FIELD,
    wherein the `string' is assumed to be an extra field and is copied to
    the (freshly malloced) buffer G.extra_field.  The third option should
    be OK since filename is dimensioned at 1025, but we check anyway.

    The string, by the way, is assumed to start at the current file-pointer
    position; its length is given by 'length'.  So start off by checking the
    length of the string:  if zero, we're already done.
  ---------------------------------------------------------------------------*/

    if (!length)
        return PK_COOL;

    switch (option) {

#if (defined(SFX) && defined(CHEAP_SFX_AUTORUN))
    /*
     * Special case: See if the comment begins with an autorun command line.
     * Save that and display (or skip) the remainder.
     */

    case CHECK_AUTORUN:
    case CHECK_AUTORUN_Q:
        comment_bytes_left = length;
        if (length >= 10)
        {
            block_len = readbuf(__G__ (char *)G.outbuf, 10);
            if (block_len == 0)
                return PK_EOF;
            comment_bytes_left -= block_len;
            G.outbuf[block_len] = '\0';
            if (!strcmp((char *)G.outbuf, "$AUTORUN$>")) {
                char *eol;
                length -= 10;
                block_len = readbuf(__G__ G.autorun_command,
                                    MIN(length, sizeof(G.autorun_command)-1));
                if (block_len == 0)
                    return PK_EOF;
                comment_bytes_left -= block_len;
                G.autorun_command[block_len] = '\0';
                A_TO_N(G.autorun_command);
                eol = strchr(G.autorun_command, '\n');
                if (!eol)
                    eol = G.autorun_command + strlen(G.autorun_command) - 1;
                length -= eol + 1 - G.autorun_command;
                while (eol >= G.autorun_command && isspace(*eol))
                    *eol-- = '\0';
#if (defined(WIN32) && !defined(_WIN32_WCE))
                /* Win9x console always uses OEM character coding, and
                   WinNT console is set to OEM charset by default, too */
                INTERN_TO_OEM(G.autorun_command, G.autorun_command);
#endif /* (WIN32 && !_WIN32_WCE) */
            }
        }
        if (option == CHECK_AUTORUN_Q)  /* don't display the remainder */
            length = 0;
        /* seek to beginning of remaining part of comment -- rewind if */
        /* displaying entire comment, or skip to end if discarding it  */
        seek_zipf(__G__ G.cur_zipfile_bufstart - G.extra_bytes +
                  (G.inptr - G.inbuf) + comment_bytes_left - length);
        if (!length)
            break;
        /*  FALL THROUGH...  */
#endif /* SFX && CHEAP_SFX_AUTORUN */

    /*
     * First normal case:  print string on standard output.  First set loop
     * variables, then loop through the comment in chunks of OUTBUFSIZ bytes,
     * converting formats and printing as we go.  The second half of the
     * loop conditional was added because the file might be truncated, in
     * which case comment_bytes_left will remain at some non-zero value for
     * all time.  outbuf and slide are used as scratch buffers because they
     * are available (we should be either before or in between any file pro-
     * cessing).
     */

    case DISPLAY:
    case DISPL_8:
        comment_bytes_left = length;
        block_len = OUTBUFSIZ;       /* for the while statement, first time */
        while (comment_bytes_left > 0 && block_len > 0) {
            register uch *p = G.outbuf;
            register uch *q = G.outbuf;

            if ((block_len = readbuf(__G__ (char *)G.outbuf,
                   MIN((unsigned)OUTBUFSIZ, comment_bytes_left))) == 0)
                return PK_EOF;
            comment_bytes_left -= block_len;

            /* this is why we allocated an extra byte for outbuf:  terminate
             *  with zero (ASCIIZ) */
            G.outbuf[block_len] = '\0';

            /* remove all ASCII carriage returns from comment before printing
             * (since used before A_TO_N(), check for CR instead of '\r')
             */
            while (*p) {
                while (*p == CR)
                    ++p;
                *q++ = *p++;
            }
            /* could check whether (p - outbuf) == block_len here */
            *q = '\0';

            if (option == DISPL_8) {
                /* translate the text coded in the entry's host-dependent
                   "extended ASCII" charset into the compiler's (system's)
                   internal text code page */
                Ext_ASCII_TO_Native((char *)G.outbuf, G.pInfo->hostnum,
                                    G.pInfo->hostver, G.pInfo->HasUxAtt,
                                    FALSE);
#ifdef WINDLL
                /* translate to ANSI (RTL internal codepage may be OEM) */
                INTERN_TO_ISO((char *)G.outbuf, (char *)G.outbuf);
#else /* !WINDLL */
#if (defined(WIN32) && !defined(_WIN32_WCE))
                /* Win9x console always uses OEM character coding, and
                   WinNT console is set to OEM charset by default, too */
                INTERN_TO_OEM((char *)G.outbuf, (char *)G.outbuf);
#endif /* (WIN32 && !_WIN32_WCE) */
#endif /* ?WINDLL */
            } else {
                A_TO_N(G.outbuf);   /* translate string to native */
            }

#ifdef WINDLL
            /* ran out of local mem -- had to cheat */
            win_fprintf((zvoid *)&G, stdout, (extent)(q-G.outbuf),
                        (char *)G.outbuf);
            win_fprintf((zvoid *)&G, stdout, 2, (char *)"\n\n");
#else /* !WINDLL */
#ifdef NOANSIFILT       /* GRR:  can ANSI be used with EBCDIC? */
            (*G.message)((zvoid *)&G, G.outbuf, (ulg)(q-G.outbuf), 0);
#else /* ASCII, filter out ANSI escape sequences and handle ^S (pause) */
            p = G.outbuf - 1;
            q = slide;
            while (*++p) {
                int pause = FALSE;

                if (*p == 0x1B) {          /* ASCII escape char */
                    *q++ = '^';
                    *q++ = '[';
                } else if (*p == 0x13) {   /* ASCII ^S (pause) */
                    pause = TRUE;
                    if (p[1] == LF)        /* ASCII LF */
                        *q++ = *++p;
                    else if (p[1] == CR && p[2] == LF) {  /* ASCII CR LF */
                        *q++ = *++p;
                        *q++ = *++p;
                    }
                } else
                    *q++ = *p;
                if ((unsigned)(q-slide) > WSIZE-3 || pause) {   /* flush */
                    (*G.message)((zvoid *)&G, slide, (ulg)(q-slide), 0);
                    q = slide;
                    if (pause && G.extract_flag) /* don't pause for list/test */
                        (*G.mpause)((zvoid *)&G, LoadFarString(QuitPrompt), 0);
                }
            }
            (*G.message)((zvoid *)&G, slide, (ulg)(q-slide), 0);
#endif /* ?NOANSIFILT */
#endif /* ?WINDLL */
        }
        /* add '\n' if not at start of line */
        (*G.message)((zvoid *)&G, slide, 0L, 0x40);
        break;

    /*
     * Second case:  read string into filename[] array.  The filename should
     * never ever be longer than FILNAMSIZ-1 (1024), but for now we'll check,
     * just to be sure.
     */

    case DS_FN:
    case DS_FN_L:
#ifdef UNICODE_SUPPORT
        /* get the whole filename as need it for Unicode checksum */
        if (G.fnfull_bufsize <= length) {
            extent fnbufsiz = FILNAMSIZ;

            if (fnbufsiz <= length)
                fnbufsiz = length + 1;
            if (G.filename_full)
                free(G.filename_full);
            G.filename_full = malloc(fnbufsiz);
            if (G.filename_full == NULL)
                return PK_MEM;
            G.fnfull_bufsize = fnbufsiz;
        }
        if (readbuf(__G__ G.filename_full, length) == 0)
            return PK_EOF;
        G.filename_full[length] = '\0';      /* terminate w/zero:  ASCIIZ */

        /* if needed, chop off end so standard filename is a valid length */
        if (length >= FILNAMSIZ) {
            Info(slide, 0x401, ((char *)slide,
              LoadFarString(FilenameTooLongTrunc)));
            error = PK_WARN;
            length = FILNAMSIZ - 1;
        }
        /* no excess size */
        block_len = 0;
        strncpy(G.filename, G.filename_full, length);
        G.filename[length] = '\0';      /* terminate w/zero:  ASCIIZ */
#else /* !UNICODE_SUPPORT */
        if (length >= FILNAMSIZ) {
            Info(slide, 0x401, ((char *)slide,
              LoadFarString(FilenameTooLongTrunc)));
            error = PK_WARN;
            /* remember excess length in block_len */
            block_len = length - (FILNAMSIZ - 1);
            length = FILNAMSIZ - 1;
        } else
            /* no excess size */
            block_len = 0;
        if (readbuf(__G__ G.filename, length) == 0)
            return PK_EOF;
        G.filename[length] = '\0';      /* terminate w/zero:  ASCIIZ */
#endif /* ?UNICODE_SUPPORT */

        /* translate the Zip entry filename coded in host-dependent "extended
           ASCII" into the compiler's (system's) internal text code page */
        Ext_ASCII_TO_Native(G.filename, G.pInfo->hostnum, G.pInfo->hostver,
                            G.pInfo->HasUxAtt, (option == DS_FN_L));

        if (G.pInfo->lcflag)      /* replace with lowercase filename */
            STRLOWER(G.filename, G.filename);

        if (G.pInfo->vollabel && length > 8 && G.filename[8] == '.') {
            char *p = G.filename+8;
            while (*p++)
                p[-1] = *p;  /* disk label, and 8th char is dot:  remove dot */
        }

        if (!block_len)         /* no overflow, we're done here */
            break;

        /*
         * We truncated the filename, so print what's left and then fall
         * through to the SKIP routine.
         */
        Info(slide, 0x401, ((char *)slide, "[ %s ]\n", FnFilter1(G.filename)));
        length = block_len;     /* SKIP the excess bytes... */
        /*  FALL THROUGH...  */

    /*
     * Third case:  skip string, adjusting readbuf's internal variables
     * as necessary (and possibly skipping to and reading a new block of
     * data).
     */

    case SKIP:
        /* cur_zipfile_bufstart already takes account of extra_bytes, so don't
         * correct for it twice: */
        seek_zipf(__G__ G.cur_zipfile_bufstart - G.extra_bytes +
                  (G.inptr-G.inbuf) + length);
        break;

    /*
     * Fourth case:  assume we're at the start of an "extra field"; malloc
     * storage for it and read data into the allocated space.
     */

    case EXTRA_FIELD:
        if (G.extra_field != (uch *)NULL)
            free(G.extra_field);
        if ((G.extra_field = (uch *)malloc(length)) == (uch *)NULL) {
            Info(slide, 0x401, ((char *)slide, LoadFarString(ExtraFieldTooLong),
              length));
            /* cur_zipfile_bufstart already takes account of extra_bytes,
             * so don't correct for it twice: */
            seek_zipf(__G__ G.cur_zipfile_bufstart - G.extra_bytes +
                      (G.inptr-G.inbuf) + length);
        } else {
            if (readbuf(__G__ (char *)G.extra_field, length) == 0)
                return PK_EOF;
            /* Looks like here is where extra fields are read */
            getZip64Data(__G__ G.extra_field, length);
#ifdef UNICODE_SUPPORT
            G.unipath_filename = NULL;
            if (G.UzO.U_flag < 2) {
              /* check if GPB11 (General Purpuse Bit 11) is set indicating
                 the standard path and comment are UTF-8 */
              if (G.pInfo->GPFIsUTF8) {
                /* if GPB11 set then filename_full is untruncated UTF-8 */
                G.unipath_filename = G.filename_full;
              } else {
                /* Get the Unicode fields if exist */
                getUnicodeData(__G__ G.extra_field, length);
                if (G.unipath_filename && strlen(G.unipath_filename) == 0) {
                  /* the standard filename field is UTF-8 */
                  free(G.unipath_filename);
                  G.unipath_filename = G.filename_full;
                }
              }
              if (G.unipath_filename) {
# ifdef UTF8_MAYBE_NATIVE
                if (G.native_is_utf8
#  ifdef UNICODE_WCHAR
                    && (!G.unicode_escape_all)
#  endif
                   ) {
                  strncpy(G.filename, G.unipath_filename, FILNAMSIZ - 1);
                  /* make sure filename is short enough */
                  if (strlen(G.unipath_filename) >= FILNAMSIZ) {
                    G.filename[FILNAMSIZ - 1] = '\0';
                    Info(slide, 0x401, ((char *)slide,
                      LoadFarString(UFilenameTooLongTrunc)));
                    error = PK_WARN;
                  }
                }
#  ifdef UNICODE_WCHAR
                else
#  endif
# endif /* UTF8_MAYBE_NATIVE */
# ifdef UNICODE_WCHAR
                {
                  char *fn;

                  /* convert UTF-8 to local character set */
                  fn = utf8_to_local_string(G.unipath_filename,
                                            G.unicode_escape_all);
                  /* make sure filename is short enough */
                  if (strlen(fn) >= FILNAMSIZ) {
                    fn[FILNAMSIZ - 1] = '\0';
                    Info(slide, 0x401, ((char *)slide,
                      LoadFarString(UFilenameTooLongTrunc)));
                    error = PK_WARN;
                  }
                  /* replace filename with converted UTF-8 */
                  strcpy(G.filename, fn);
                  free(fn);
                }
# endif /* UNICODE_WCHAR */
                if (G.unipath_filename != G.filename_full)
                  free(G.unipath_filename);
                G.unipath_filename = NULL;
              }
            }
#endif /* UNICODE_SUPPORT */
        }
        break;

#ifdef AMIGA
    /*
     * Fifth case, for the Amiga only:  take the comment that would ordinarily
     * be skipped over, and turn it into a 79 character string that will be
     * attached to the file as a "filenote" after it is extracted.
     */

    case FILENOTE:
        if ((block_len = readbuf(__G__ tmp_fnote, (unsigned)
                                 MIN(length, 2 * AMIGA_FILENOTELEN - 1))) == 0)
            return PK_EOF;
        if ((length -= block_len) > 0)  /* treat remainder as in case SKIP: */
            seek_zipf(__G__ G.cur_zipfile_bufstart - G.extra_bytes
                      + (G.inptr - G.inbuf) + length);
        /* convert multi-line text into single line with no ctl-chars: */
        tmp_fnote[block_len] = '\0';
        while ((short int) --block_len >= 0)
            if ((unsigned) tmp_fnote[block_len] < ' ')
                if (tmp_fnote[block_len+1] == ' ')     /* no excess */
                    strcpy(tmp_fnote+block_len, tmp_fnote+block_len+1);
                else
                    tmp_fnote[block_len] = ' ';
        tmp_fnote[AMIGA_FILENOTELEN - 1] = '\0';
        if (G.filenotes[G.filenote_slot])
            free(G.filenotes[G.filenote_slot]);     /* should not happen */
        G.filenotes[G.filenote_slot] = NULL;
        if (tmp_fnote[0]) {
            if (!(G.filenotes[G.filenote_slot] = malloc(strlen(tmp_fnote)+1)))
                return PK_MEM;
            strcpy(G.filenotes[G.filenote_slot], tmp_fnote);
        }
        break;
#endif /* AMIGA */

    } /* end switch (option) */

    return error;

} /* end function do_string() */

Project: unzip
File: fileio.c

void defer_leftover_input(__G)
    __GDEF
{
    if ((zoff_t)G.incnt > G.csize) {
        /* (G.csize < MAXINT), we can safely cast it to int !! */
        if (G.csize < 0L)
            G.csize = 0L;
        G.inptr_leftover = G.inptr + (int)G.csize;
        G.incnt_leftover = G.incnt - (int)G.csize;
        G.incnt = (int)G.csize;
    } else
        G.incnt_leftover = 0;
    G.csize -= G.incnt;
} /* end function defer_leftover_input() */

Project: unzip
File: fileio.c

int fillinbuf(__G) /* like readbyte() except returns number of bytes in inbuf */
    __GDEF
{
    if (G.mem_mode ||
                  (G.incnt = read(G.zipfd, (char *)G.inbuf, INBUFSIZ)) <= 0)
        return 0;
    G.cur_zipfile_bufstart += INBUFSIZ;  /* always starts on a block boundary */
    G.inptr = G.inbuf;
    defer_leftover_input(__G);           /* decrements G.csize */

#if CRYPT
    if (G.pInfo->encrypted) {
        uch *p;
        int n;

        for (n = G.incnt, p = G.inptr;  n--;  p++)
            zdecode(*p);
    }
#endif /* CRYPT */

    return G.incnt;

} /* end function fillinbuf() */

Project: unzip
File: fileio.c

void handler(signal)   /* upon interrupt, turn on echo and exit cleanly */
    int signal;
{
    GETGLOBALS();

#if !(defined(SIGBUS) || defined(SIGSEGV))      /* add a newline if not at */
    (*G.message)((zvoid *)&G, slide, 0L, 0x41); /*  start of line (to stderr; */
#endif                                          /*  slide[] should be safe) */

    echon();

#ifdef SIGBUS
    if (signal == SIGBUS) {
        Info(slide, 0x421, ((char *)slide, LoadFarString(ZipfileCorrupt),
          "bus error"));
        DESTROYGLOBALS();
        EXIT(PK_BADERR);
    }
#endif /* SIGBUS */

#ifdef SIGILL
    if (signal == SIGILL) {
        Info(slide, 0x421, ((char *)slide, LoadFarString(ZipfileCorrupt),
          "illegal instruction"));
        DESTROYGLOBALS();
        EXIT(PK_BADERR);
    }
#endif /* SIGILL */

#ifdef SIGSEGV
    if (signal == SIGSEGV) {
        Info(slide, 0x421, ((char *)slide, LoadFarString(ZipfileCorrupt),
          "segmentation violation"));
        DESTROYGLOBALS();
        EXIT(PK_BADERR);
    }
#endif /* SIGSEGV */

    /* probably ctrl-C */
    DESTROYGLOBALS();
#if defined(AMIGA) && defined(__SASC)
    _abort();
#endif
    EXIT(IZ_CTRLC);       /* was EXIT(0), then EXIT(PK_ERR) */
}

Project: unzip
File: fileio.c

char *fLoadFarString(__GPRO__ const char Far *sz)
{
    (void)zfstrcpy(G.rgchBigBuffer, sz);
    return G.rgchBigBuffer;
}

Project: unzip
File: fileio.c

char Far * Far zfstrcpy(char Far *s1, const char Far *s2)
{
    char Far *p = s1;

    while ((*s1++ = *s2++) != '\0');
    return p;
}

Project: unzip
File: fileio.c

char *fLoadFarStringSmall2(__GPRO__ const char Far *sz)
{
    (void)zfstrcpy(G.rgchSmallBuffer2, sz);
    return G.rgchSmallBuffer2;
}

Project: unzip
File: fileio.c

void UZ_EXP UzpMorePause(pG, prompt, flag)
    zvoid *pG;            /* globals struct:  always passed */
    ZCONST char *prompt;  /* "--More--" prompt */
    int flag;             /* 0 = any char OK; 1 = accept only '\n', ' ', q */
{
    uch c;

/*---------------------------------------------------------------------------
    Print a prompt and wait for the user to press a key, then erase prompt
    if possible.
  ---------------------------------------------------------------------------*/

    if (!((Uz_Globs *)pG)->sol)
        fprintf(stderr, "\n");
    /* numlines may or may not be used: */
    fprintf(stderr, prompt, ((Uz_Globs *)pG)->numlines);
    fflush(stderr);
    if (flag & 1) {
        do {
            c = (uch)FGETCH(0);
        } while (
#ifdef THEOS
                 c != 17 &&     /* standard QUIT key */
#endif
                 c != '\r' && c != '\n' && c != ' ' && c != 'q' && c != 'Q');
    } else
        c = (uch)FGETCH(0);

    /* newline was not echoed, so cover up prompt line */
    fprintf(stderr, LoadFarString(HidePrompt));
    fflush(stderr);

    if (
#ifdef THEOS
        (c == 17) ||            /* standard QUIT key */
#endif
        (ToLower(c) == 'q')) {
        DESTROYGLOBALS();
        EXIT(PK_COOL);
    }

    ((Uz_Globs *)pG)->sol = TRUE;

#ifdef MORE
    /* space for another screen, enter for another line. */
    if ((flag & 1) && c == ' ')
        ((Uz_Globs *)pG)->lines = 0;
#endif /* MORE */

} /* end function UzpMorePause() */

Project: unzip
File: fileio.c

void undefer_input(__G)
    __GDEF
{
    if (G.incnt > 0)
        G.csize += G.incnt;
    if (G.incnt_leftover > 0) {
        /* We know that "(G.csize < MAXINT)" so we can cast G.csize to int:
         * This condition was checked when G.incnt_leftover was set > 0 in
         * defer_leftover_input(), and it is NOT allowed to touch G.csize
         * before calling undefer_input() when (G.incnt_leftover > 0)
         * (single exception: see readbyte()'s  "G.csize <= 0" handling) !!
         */
        if (G.csize < 0L)
            G.csize = 0L;
        G.incnt = G.incnt_leftover + (int)G.csize;
        G.inptr = G.inptr_leftover - (int)G.csize;
        G.incnt_leftover = 0;
    } else if (G.incnt < 0)
        G.incnt = 0;
} /* end function undefer_input() */

Project: unzip
File: fileio.c

unsigned readbuf(__G__ buf, size)   /* return number of bytes read into buf */
    __GDEF
    char *buf;
    register unsigned size;
{
    register unsigned count;
    unsigned n;

    n = size;
    while (size) {
        if (G.incnt <= 0) {
            if ((G.incnt = read(G.zipfd, (char *)G.inbuf, INBUFSIZ)) == 0)
                return (n-size);
            else if (G.incnt < 0) {
                /* another hack, but no real harm copying same thing twice */
                (*G.message)((zvoid *)&G,
                  (uch *)LoadFarString(ReadError),  /* CANNOT use slide */
                  (ulg)strlen(LoadFarString(ReadError)), 0x401);
                return 0;  /* discarding some data; better than lock-up */
            }
            /* buffer ALWAYS starts on a block boundary:  */
            G.cur_zipfile_bufstart += INBUFSIZ;
            G.inptr = G.inbuf;
        }
        count = MIN(size, (unsigned)G.incnt);
        memcpy(buf, G.inptr, count);
        buf += count;
        G.inptr += count;
        G.incnt -= count;
        size -= count;
    }
    return n;

} /* end function readbuf() */

Project: unzip
File: fileio.c

int seek_zipf(__G__ abs_offset)
    __GDEF
    zoff_t abs_offset;
{
/*
 *  Seek to the block boundary of the block which includes abs_offset,
 *  then read block into input buffer and set pointers appropriately.
 *  If block is already in the buffer, just set the pointers.  This function
 *  is used by do_seekable (process.c), extract_or_test_entrylist (extract.c)
 *  and do_string (fileio.c).  Also, a slightly modified version is embedded
 *  within extract_or_test_entrylist (extract.c).  readbyte() and readbuf()
 *  (fileio.c) are compatible.  NOTE THAT abs_offset is intended to be the
 *  "proper offset" (i.e., if there were no extra bytes prepended);
 *  cur_zipfile_bufstart contains the corrected offset.
 *
 *  Since seek_zipf() is never used during decompression, it is safe to
 *  use the slide[] buffer for the error message.
 *
 * returns PK error codes:
 *  PK_BADERR if effective offset in zipfile is negative
 *  PK_EOF if seeking past end of zipfile
 *  PK_OK when seek was successful
 */
    zoff_t request = abs_offset + G.extra_bytes;
    zoff_t inbuf_offset = request % INBUFSIZ;
    zoff_t bufstart = request - inbuf_offset;

    if (request < 0) {
        Info(slide, 1, ((char *)slide, LoadFarStringSmall(SeekMsg),
             G.zipfn, LoadFarString(ReportMsg)));
        return(PK_BADERR);
    } else if (bufstart != G.cur_zipfile_bufstart) {
        Trace((stderr,
          "fpos_zip: abs_offset = %s, G.extra_bytes = %s\n",
          FmZofft(abs_offset, NULL, NULL),
          FmZofft(G.extra_bytes, NULL, NULL)));
#ifdef USE_STRM_INPUT
        zfseeko(G.zipfd, bufstart, SEEK_SET);
        G.cur_zipfile_bufstart = zftello(G.zipfd);
#else /* !USE_STRM_INPUT */
        G.cur_zipfile_bufstart = zlseek(G.zipfd, bufstart, SEEK_SET);
#endif /* ?USE_STRM_INPUT */
        Trace((stderr,
          "       request = %s, (abs+extra) = %s, inbuf_offset = %s\n",
          FmZofft(request, NULL, NULL),
          FmZofft((abs_offset+G.extra_bytes), NULL, NULL),
          FmZofft(inbuf_offset, NULL, NULL)));
        Trace((stderr, "       bufstart = %s, cur_zipfile_bufstart = %s\n",
          FmZofft(bufstart, NULL, NULL),
          FmZofft(G.cur_zipfile_bufstart, NULL, NULL)));
        if ((G.incnt = read(G.zipfd, (char *)G.inbuf, INBUFSIZ)) <= 0)
            return(PK_EOF);
        G.incnt -= (int)inbuf_offset;
        G.inptr = G.inbuf + (int)inbuf_offset;
    } else {
        G.incnt += (G.inptr-G.inbuf) - (int)inbuf_offset;
        G.inptr = G.inbuf + (int)inbuf_offset;
    }
    return(PK_OK);
} /* end function seek_zipf() */

Project: unzip
File: fileio.c

int open_outfile(__G)           /* return 1 if fail */
    __GDEF
{
#ifdef DLL
    if (G.redirect_data)
        return (redirect_outfile(__G) == FALSE);
#endif
#ifdef QDOS
    QFilename(__G__ G.filename);
#endif
#if (defined(DOS_FLX_NLM_OS2_W32) || defined(ATH_BEO_THS_UNX))
#ifdef BORLAND_STAT_BUG
    /* Borland 5.0's stat() barfs if the filename has no extension and the
     * file doesn't exist. */
    if (access(G.filename, 0) == -1) {
        FILE *tmp = fopen(G.filename, "wb+");

        /* file doesn't exist, so create a dummy file to keep stat() from
         * failing (will be over-written anyway) */
        fputc('0', tmp);  /* just to have something in the file */
        fclose(tmp);
    }
#endif /* BORLAND_STAT_BUG */
#ifdef SYMLINKS
    if (SSTAT(G.filename, &G.statbuf) == 0 ||
        lstat(G.filename, &G.statbuf) == 0)
#else
    if (SSTAT(G.filename, &G.statbuf) == 0)
#endif /* ?SYMLINKS */
    {
        Trace((stderr, "open_outfile:  stat(%s) returns 0:  file exists\n",
          FnFilter1(G.filename)));
#ifdef UNIXBACKUP
        if (uO.B_flag) {    /* do backup */
            char *tname;
            z_stat tmpstat;
            int blen, flen, tlen;

            blen = strlen(BackupSuffix);
            flen = strlen(G.filename);
            tlen = flen + blen + 6;    /* includes space for 5 digits */
            if (tlen >= FILNAMSIZ) {   /* in case name is too long, truncate */
                tname = (char *)malloc(FILNAMSIZ);
                if (tname == NULL)
                    return 1;                 /* in case we run out of space */
                tlen = FILNAMSIZ - 1 - blen;
                strcpy(tname, G.filename);    /* make backup name */
                tname[tlen] = '\0';
                if (flen > tlen) flen = tlen;
                tlen = FILNAMSIZ;
            } else {
                tname = (char *)malloc(tlen);
                if (tname == NULL)
                    return 1;                 /* in case we run out of space */
                strcpy(tname, G.filename);    /* make backup name */
            }
            strcpy(tname+flen, BackupSuffix);

            if (IS_OVERWRT_ALL) {
                /* If there is a previous backup file, delete it,
                 * otherwise the following rename operation may fail.
                 */
                if (SSTAT(tname, &tmpstat) == 0)
                    unlink(tname);
            } else {
                /* Check if backupname exists, and, if it's true, try
                 * appending numbers of up to 5 digits (or the maximum
                 * "unsigned int" number on 16-bit systems) to the
                 * BackupSuffix, until an unused name is found.
                 */
                unsigned maxtail, i;
                char *numtail = tname + flen + blen;

                /* take account of the "unsigned" limit on 16-bit systems: */
                maxtail = ( ((~0) >= 99999L) ? 99999 : (~0) );
                switch (tlen - flen - blen - 1) {
                    case 4: maxtail = 9999; break;
                    case 3: maxtail = 999; break;
                    case 2: maxtail = 99; break;
                    case 1: maxtail = 9; break;
                    case 0: maxtail = 0; break;
                }
                /* while filename exists */
                for (i = 0; (i < maxtail) && (SSTAT(tname, &tmpstat) == 0);)
                    sprintf(numtail,"%u", ++i);
            }

            if (rename(G.filename, tname) != 0) {   /* move file */
                Info(slide, 0x401, ((char *)slide,
                  LoadFarString(CannotRenameOldFile),
                  FnFilter1(G.filename), strerror(errno)));
                free(tname);
                return 1;
            }
            Trace((stderr, "open_outfile:  %s now renamed into %s\n",
              FnFilter1(G.filename), FnFilter2(tname)));
            free(tname);
        } else
#endif /* UNIXBACKUP */
        {
#ifdef DOS_FLX_OS2_W32
            if (!(G.statbuf.st_mode & S_IWRITE)) {
                Trace((stderr,
                  "open_outfile:  existing file %s is read-only\n",
                  FnFilter1(G.filename)));
                chmod(G.filename, S_IREAD | S_IWRITE);
                Trace((stderr, "open_outfile:  %s now writable\n",
                  FnFilter1(G.filename)));
            }
#endif /* DOS_FLX_OS2_W32 */
#ifdef NLM
            /* Give the file read/write permission (non-POSIX shortcut) */
            chmod(G.filename, 0);
#endif /* NLM */
            if (unlink(G.filename) != 0) {
                Info(slide, 0x401, ((char *)slide,
                  LoadFarString(CannotDeleteOldFile),
                  FnFilter1(G.filename), strerror(errno)));
                return 1;
            }
            Trace((stderr, "open_outfile:  %s now deleted\n",
              FnFilter1(G.filename)));
        }
    }
#endif /* DOS_FLX_NLM_OS2_W32 || ATH_BEO_THS_UNX */
#ifdef RISCOS
    if (SWI_OS_File_7(G.filename,0xDEADDEAD,0xDEADDEAD,G.lrec.ucsize)!=NULL) {
        Info(slide, 1, ((char *)slide, LoadFarString(CannotCreateFile),
          FnFilter1(G.filename), strerror(errno)));
        return 1;
    }
#endif /* RISCOS */
#ifdef TOPS20
    char *tfilnam;

    if ((tfilnam = (char *)malloc(2*strlen(G.filename)+1)) == (char *)NULL)
        return 1;
    strcpy(tfilnam, G.filename);
    upper(tfilnam);
    enquote(tfilnam);
    if ((G.outfile = fopen(tfilnam, FOPW)) == (FILE *)NULL) {
        Info(slide, 1, ((char *)slide, LoadFarString(CannotCreateFile),
          tfilnam, strerror(errno)));
        free(tfilnam);
        return 1;
    }
    free(tfilnam);
#else /* !TOPS20 */
#ifdef MTS
    if (uO.aflag)
        G.outfile = zfopen(G.filename, FOPWT);
    else
        G.outfile = zfopen(G.filename, FOPW);
    if (G.outfile == (FILE *)NULL) {
        Info(slide, 1, ((char *)slide, LoadFarString(CannotCreateFile),
          FnFilter1(G.filename), strerror(errno)));
        return 1;
    }
#else /* !MTS */
#ifdef DEBUG
    Info(slide, 1, ((char *)slide,
      "open_outfile:  doing fopen(%s) for reading\n", FnFilter1(G.filename)));
    if ((G.outfile = zfopen(G.filename, FOPR)) == (FILE *)NULL)
        Info(slide, 1, ((char *)slide,
          "open_outfile:  fopen(%s) for reading failed:  does not exist\n",
          FnFilter1(G.filename)));
    else {
        Info(slide, 1, ((char *)slide,
          "open_outfile:  fopen(%s) for reading succeeded:  file exists\n",
          FnFilter1(G.filename)));
        fclose(G.outfile);
    }
#endif /* DEBUG */
#ifdef NOVELL_BUG_FAILSAFE
    if (G.dne && ((G.outfile = zfopen(G.filename, FOPR)) != (FILE *)NULL)) {
        Info(slide, 0x401, ((char *)slide, LoadFarString(NovellBug),
          FnFilter1(G.filename)));
        fclose(G.outfile);
        return 1;   /* with "./" fix in checkdir(), should never reach here */
    }
#endif /* NOVELL_BUG_FAILSAFE */
    Trace((stderr, "open_outfile:  doing fopen(%s) for writing\n",
      FnFilter1(G.filename)));
    {
#if defined(ATH_BE_UNX) || defined(AOS_VS) || defined(QDOS) || defined(TANDEM)
        mode_t umask_sav = umask(0077);
#endif
#if defined(SYMLINKS) || defined(QLZIP)
        /* These features require the ability to re-read extracted data from
           the output files. Output files are created with Read&Write access.
         */
        G.outfile = zfopen(G.filename, FOPWR);
#else
        G.outfile = zfopen(G.filename, FOPW);
#endif
#if defined(ATH_BE_UNX) || defined(AOS_VS) || defined(QDOS) || defined(TANDEM)
        umask(umask_sav);
#endif
    }
    if (G.outfile == (FILE *)NULL) {
        Info(slide, 0x401, ((char *)slide, LoadFarString(CannotCreateFile),
          FnFilter1(G.filename), strerror(errno)));
        return 1;
    }
    Trace((stderr, "open_outfile:  fopen(%s) for writing succeeded\n",
      FnFilter1(G.filename)));
#endif /* !MTS */
#endif /* !TOPS20 */

#ifdef USE_FWRITE
#ifdef DOS_NLM_OS2_W32
    /* 16-bit MSC: buffer size must be strictly LESS than 32K (WSIZE):  bogus */
    setbuf(G.outfile, (char *)NULL);   /* make output unbuffered */
#else /* !DOS_NLM_OS2_W32 */
#ifndef RISCOS
#ifdef _IOFBF  /* make output fully buffered (works just about like write()) */
    setvbuf(G.outfile, (char *)slide, _IOFBF, WSIZE);
#else
    setbuf(G.outfile, (char *)slide);
#endif
#endif /* !RISCOS */
#endif /* ?DOS_NLM_OS2_W32 */
#endif /* USE_FWRITE */
#ifdef OS2_W32
    /* preallocate the final file size to prevent file fragmentation */
    SetFileSize(G.outfile, G.lrec.ucsize);
#endif
    return 0;

} /* end function open_outfile() */

Project: unzip
File: fileio.c

extent uzmbclen(ptr)
    ZCONST unsigned char *ptr;
{
    int mbl;

    mbl = mblen((ZCONST char *)ptr, MB_CUR_MAX);
    /* For use in code scanning through MBCS strings, we need a strictly
       positive "MB char bytes count".  For our scanning purpose, it is not
       not relevant whether the MB character is valid or not. And, the NUL
       char '\0' has a byte count of 1, but mblen() returns 0. So, we make
       sure that the uzmbclen() return value is not less than 1.
     */
    return (extent)(mbl > 0 ? mbl : 1);
}

Project: unzip
File: fileio.c

zvoid *memcpy(dst, src, len)
    register zvoid *dst;
    register ZCONST zvoid *src;
    register unsigned int len;
{
    zvoid *start;

    start = dst;
    while (len-- > 0)
        *((char *)dst)++ = *((ZCONST char *)src)++;
    return start;
}

Project: unzip
File: fileio.c

int Far zfstrcmp(const char Far *s1, const char Far *s2)
{
    int ret;

    while ((ret = (int)(uch)*s1 - (int)(uch)*s2) == 0
           && *s2 != '\0') {
        ++s2; ++s1;
    }
    return ret;
}

Project: unzip
File: fileio.c

zvoid *memset(buf, init, len)
    register zvoid *buf;        /* buffer location */
    register int init;          /* initializer character */
    register unsigned int len;  /* length of the buffer */
{
    zvoid *start;

    start = buf;
    while (len--)
        *((char *)buf++) = (char)init;
    return start;
}

Project: unzip
File: fileio.c

int memcmp(b1, b2, len)
    register ZCONST zvoid *b1;
    register ZCONST zvoid *b2;
    register unsigned int len;
{
    register int c;

    if (len > 0) do {
        if ((c = (int)(*((ZCONST unsigned char *)b1)++) -
                 (int)(*((ZCONST unsigned char *)b2)++)) != 0)
           return c;
    } while (--len > 0)
    return 0;
}

Project: unzip
File: fileio.c

char *fLoadFarStringSmall(__GPRO__ const char Far *sz)
{
    (void)zfstrcpy(G.rgchSmallBuffer, sz);
    return G.rgchSmallBuffer;
}

Project: unzip
File: fileio.c

static int partflush(__G__ rawbuf, size, unshrink)
    __GDEF
    uch *rawbuf;        /* cannot be ZCONST, gets passed to (*G.message)() */
    ulg size;
    int unshrink;
#endif /* USE_DEFLATE64 && __16BIT__ */
{
    register uch *p;
    register uch *q;
    uch *transbuf;
#if (defined(SMALL_MEM) || defined(MED_MEM) || defined(VMS_TEXT_CONV))
    ulg transbufsiz;
#endif
    /* static int didCRlast = FALSE;    moved to globals.h */


/*---------------------------------------------------------------------------
    Compute the CRC first; if testing or if disk is full, that's it.
  ---------------------------------------------------------------------------*/

    G.crc32val = crc32(G.crc32val, rawbuf, (extent)size);

#ifdef DLL
    if ((G.statreportcb != NULL) &&
        (*G.statreportcb)(__G__ UZ_ST_IN_PROGRESS, G.zipfn, G.filename, NULL))
        return IZ_CTRLC;        /* cancel operation by user request */
#endif

    if (uO.tflag || size == 0L)  /* testing or nothing to write:  all done */
        return PK_OK;

    if (G.disk_full)
        return PK_DISK;         /* disk already full:  ignore rest of file */

/*---------------------------------------------------------------------------
    Write the bytes rawbuf[0..size-1] to the output device, first converting
    end-of-lines and ASCII/EBCDIC as needed.  If SMALL_MEM or MED_MEM are NOT
    defined, outbuf is assumed to be at least as large as rawbuf and is not
    necessarily checked for overflow.
  ---------------------------------------------------------------------------*/

    if (!G.pInfo->textmode) {   /* write raw binary data */
        /* GRR:  note that for standard MS-DOS compilers, size argument to
         * fwrite() can never be more than 65534, so WriteError macro will
         * have to be rewritten if size can ever be that large.  For now,
         * never more than 32K.  Also note that write() returns an int, which
         * doesn't necessarily limit size to 32767 bytes if write() is used
         * on 16-bit systems but does make it more of a pain; however, because
         * at least MSC 5.1 has a lousy implementation of fwrite() (as does
         * DEC Ultrix cc), write() is used anyway.
         */
#ifdef DLL
        if (G.redirect_data) {
#ifdef NO_SLIDE_REDIR
            if (writeToMemory(__G__ rawbuf, (extent)size)) return PK_ERR;
#else
            writeToMemory(__G__ rawbuf, (extent)size);
#endif
        } else
#endif
        if (!uO.cflag && WriteError(rawbuf, size, G.outfile))
            return disk_error(__G);
        else if (uO.cflag && (*G.message)((zvoid *)&G, rawbuf, size, 0))
            return PK_OK;
    } else {   /* textmode:  aflag is true */
        if (unshrink) {
            /* rawbuf = outbuf */
            transbuf = G.outbuf2;
#if (defined(SMALL_MEM) || defined(MED_MEM) || defined(VMS_TEXT_CONV))
            transbufsiz = TRANSBUFSIZ;
#endif
        } else {
            /* rawbuf = slide */
            transbuf = G.outbuf;
#if (defined(SMALL_MEM) || defined(MED_MEM) || defined(VMS_TEXT_CONV))
            transbufsiz = OUTBUFSIZ;
            Trace((stderr, "\ntransbufsiz = OUTBUFSIZ = %u\n",
                   (unsigned)OUTBUFSIZ));
#endif
        }
        if (G.newfile) {
#ifdef VMS_TEXT_CONV
            if (G.pInfo->hostnum == VMS_ && G.extra_field &&
                is_vms_varlen_txt(__G__ G.extra_field,
                                  G.lrec.extra_field_length))
                G.VMS_line_state = 0;    /* 0: ready to read line length */
            else
                G.VMS_line_state = -1;   /* -1: don't treat as VMS text */
#endif
            G.didCRlast = FALSE;         /* no previous buffers written */
            G.newfile = FALSE;
        }

#ifdef VMS_TEXT_CONV
        if (G.VMS_line_state >= 0)
        {
            p = rawbuf;
            q = transbuf;
            while ((extent)(p-rawbuf) < (extent)size) {
                switch (G.VMS_line_state) {

                    /* 0: ready to read line length */
                    case 0:
                        G.VMS_line_length = 0;
                        if ((extent)(p-rawbuf) == (extent)size-1) {
                            /* last char */
                            G.VMS_line_length = (unsigned)(*p++);
                            G.VMS_line_state = 1;
                        } else {
                            G.VMS_line_length = makeword(p);
                            p += 2;
                            G.VMS_line_state = 2;
                        }
                        G.VMS_line_pad =
                               ((G.VMS_line_length & 1) != 0); /* odd */
                        break;

                    /* 1: read one byte of length, need second */
                    case 1:
                        G.VMS_line_length += ((unsigned)(*p++) << 8);
                        G.VMS_line_state = 2;
                        break;

                    /* 2: ready to read VMS_line_length chars */
                    case 2:
                        {
                            extent remaining = (extent)size+(rawbuf-p);
                            extent outroom;

                            if (G.VMS_line_length < remaining) {
                                remaining = G.VMS_line_length;
                                G.VMS_line_state = 3;
                            }

                            outroom = transbuf+(extent)transbufsiz-q;
                            if (remaining >= outroom) {
                                remaining -= outroom;
                                for (;outroom > 0; p++, outroom--)
                                    *q++ = native(*p);
#ifdef DLL
                                if (G.redirect_data) {
                                    if (writeToMemory(__G__ transbuf,
                                          (extent)(q-transbuf))) return PK_ERR;
                                } else
#endif
                                if (!uO.cflag && WriteError(transbuf,
                                    (extent)(q-transbuf), G.outfile))
                                    return disk_error(__G);
                                else if (uO.cflag && (*G.message)((zvoid *)&G,
                                         transbuf, (ulg)(q-transbuf), 0))
                                    return PK_OK;
                                q = transbuf;
                                /* fall through to normal case */
                            }
                            G.VMS_line_length -= remaining;
                            for (;remaining > 0; p++, remaining--)
                                *q++ = native(*p);
                        }
                        break;

                    /* 3: ready to PutNativeEOL */
                    case 3:
                        if (q > transbuf+(extent)transbufsiz-lenEOL) {
#ifdef DLL
                            if (G.redirect_data) {
                                if (writeToMemory(__G__ transbuf,
                                      (extent)(q-transbuf))) return PK_ERR;
                            } else
#endif
                            if (!uO.cflag &&
                                WriteError(transbuf, (extent)(q-transbuf),
                                  G.outfile))
                                return disk_error(__G);
                            else if (uO.cflag && (*G.message)((zvoid *)&G,
                                     transbuf, (ulg)(q-transbuf), 0))
                                return PK_OK;
                            q = transbuf;
                        }
                        PutNativeEOL
                        G.VMS_line_state = G.VMS_line_pad ? 4 : 0;
                        break;

                    /* 4: ready to read pad byte */
                    case 4:
                        ++p;
                        G.VMS_line_state = 0;
                        break;
                }
            } /* end while */

        } else
#endif /* VMS_TEXT_CONV */

    /*-----------------------------------------------------------------------
        Algorithm:  CR/LF => native; lone CR => native; lone LF => native.
        This routine is only for non-raw-VMS, non-raw-VM/CMS files (i.e.,
        stream-oriented files, not record-oriented).
      -----------------------------------------------------------------------*/

        /* else not VMS text */ {
            p = rawbuf;
            if (*p == LF && G.didCRlast)
                ++p;
            G.didCRlast = FALSE;
            for (q = transbuf;  (extent)(p-rawbuf) < (extent)size;  ++p) {
                if (*p == CR) {           /* lone CR or CR/LF: treat as EOL  */
                    PutNativeEOL
                    if ((extent)(p-rawbuf) == (extent)size-1)
                        /* last char in buffer */
                        G.didCRlast = TRUE;
                    else if (p[1] == LF)  /* get rid of accompanying LF */
                        ++p;
                } else if (*p == LF)      /* lone LF */
                    PutNativeEOL
                else
#ifndef DOS_FLX_OS2_W32
                if (*p != CTRLZ)          /* lose all ^Z's */
#endif
                    *q++ = native(*p);

#if (defined(SMALL_MEM) || defined(MED_MEM))
# if (lenEOL == 1)   /* don't check unshrink:  both buffers small but equal */
                if (!unshrink)
# endif
                    /* check for danger of buffer overflow and flush */
                    if (q > transbuf+(extent)transbufsiz-lenEOL) {
                        Trace((stderr,
                          "p - rawbuf = %u   q-transbuf = %u   size = %lu\n",
                          (unsigned)(p-rawbuf), (unsigned)(q-transbuf), size));
                        if (!uO.cflag && WriteError(transbuf,
                            (extent)(q-transbuf), G.outfile))
                            return disk_error(__G);
                        else if (uO.cflag && (*G.message)((zvoid *)&G,
                                 transbuf, (ulg)(q-transbuf), 0))
                            return PK_OK;
                        q = transbuf;
                        continue;
                    }
#endif /* SMALL_MEM || MED_MEM */
            }
        }

    /*-----------------------------------------------------------------------
        Done translating:  write whatever we've got to file (or screen).
      -----------------------------------------------------------------------*/

        Trace((stderr, "p - rawbuf = %u   q-transbuf = %u   size = %lu\n",
          (unsigned)(p-rawbuf), (unsigned)(q-transbuf), size));
        if (q > transbuf) {
#ifdef DLL
            if (G.redirect_data) {
                if (writeToMemory(__G__ transbuf, (extent)(q-transbuf)))
                    return PK_ERR;
            } else
#endif
            if (!uO.cflag && WriteError(transbuf, (extent)(q-transbuf),
                G.outfile))
                return disk_error(__G);
            else if (uO.cflag && (*G.message)((zvoid *)&G, transbuf,
                (ulg)(q-transbuf), 0))
                return PK_OK;
        }
    }

    return PK_OK;

} /* end function flush() [resp. partflush() for 16-bit Deflate64 support] */

Project: unzip
File: fileio.c

int readbyte(__G)   /* refill inbuf and return a byte if available, else EOF */
    __GDEF
{
    if (G.mem_mode)
        return EOF;
    if (G.csize <= 0) {
        G.csize--;             /* for tests done after exploding */
        G.incnt = 0;
        return EOF;
    }
    if (G.incnt <= 0) {
        if ((G.incnt = read(G.zipfd, (char *)G.inbuf, INBUFSIZ)) == 0) {
            return EOF;
        } else if (G.incnt < 0) {  /* "fail" (abort, retry, ...) returns this */
            /* another hack, but no real harm copying same thing twice */
            (*G.message)((zvoid *)&G,
              (uch *)LoadFarString(ReadError),
              (ulg)strlen(LoadFarString(ReadError)), 0x401);
            echon();
#ifdef WINDLL
            longjmp(dll_error_return, 1);
#else
            DESTROYGLOBALS();
            EXIT(PK_BADERR);    /* totally bailing; better than lock-up */
#endif
        }
        G.cur_zipfile_bufstart += INBUFSIZ; /* always starts on block bndry */
        G.inptr = G.inbuf;
        defer_leftover_input(__G);           /* decrements G.csize */
    }

#if CRYPT
    if (G.pInfo->encrypted) {
        uch *p;
        int n;

        /* This was previously set to decrypt one byte beyond G.csize, when
         * incnt reached that far.  GRR said, "but it's required:  why?"  This
         * was a bug in fillinbuf() -- was it also a bug here?
         */
        for (n = G.incnt, p = G.inptr;  n--;  p++)
            zdecode(*p);
    }
#endif /* CRYPT */

    --G.incnt;
    return *G.inptr++;

} /* end function readbyte() */

Project: unzip
File: fileio.c

int open_input_file(__G)    /* return 1 if open failed */
    __GDEF
{
    /*
     *  open the zipfile for reading and in BINARY mode to prevent cr/lf
     *  translation, which would corrupt the bitstreams
     */

#ifdef VMS
    G.zipfd = open(G.zipfn, O_RDONLY, 0, OPNZIP_RMS_ARGS);
#else /* !VMS */
#ifdef MACOS
    G.zipfd = open(G.zipfn, 0);
#else /* !MACOS */
#ifdef CMS_MVS
    G.zipfd = vmmvs_open_infile(__G);
#else /* !CMS_MVS */
#ifdef USE_STRM_INPUT
    G.zipfd = fopen(G.zipfn, FOPR);
#else /* !USE_STRM_INPUT */
    G.zipfd = open(G.zipfn, O_RDONLY | O_BINARY);
#endif /* ?USE_STRM_INPUT */
#endif /* ?CMS_MVS */
#endif /* ?MACOS */
#endif /* ?VMS */

#ifdef USE_STRM_INPUT
    if (G.zipfd == NULL)
#else
    /* if (G.zipfd < 0) */  /* no good for Windows CE port */
    if (G.zipfd == -1)
#endif
    {
        Info(slide, 0x401, ((char *)slide, LoadFarString(CannotOpenZipfile),
          G.zipfn, strerror(errno)));
        return 1;
    }
    return 0;

} /* end function open_input_file() */

Project: unzip
File: fileio.c

char *str2iso(dst, src)
    char *dst;                          /* destination buffer */
    register ZCONST char *src;          /* source string */
{
#ifdef INTERN_TO_ISO
    INTERN_TO_ISO(src, dst);
#else
    register uch c;
    register char *dstp = dst;

    do {
        c = (uch)foreign(*src++);
        *dstp++ = (char)ASCII2ISO(c);
    } while (c != '\0');
#endif

    return dst;
}

Project: unzip
File: fileio.c

ulg makelong(sig)
    ZCONST uch *sig;
{
    /*
     * Convert intel style 'long' variable to non-Intel non-16-bit
     * host format.  This routine also takes care of byte-ordering.
     */
    return (((ulg)sig[3]) << 24)
         + (((ulg)sig[2]) << 16)
         + (ulg)((((unsigned)sig[1]) << 8)
               + ((unsigned)sig[0]));
}

Project: unzip
File: fileio.c

time_t dos_to_unix_time(dosdatetime)
    ulg dosdatetime;
{
    time_t m_time;

#ifdef HAVE_MKTIME

    ZCONST time_t now = time(NULL);
    struct tm *tm;
#   define YRBASE  1900

    tm = localtime(&now);
    tm->tm_isdst = -1;          /* let mktime determine if DST is in effect */

    /* dissect date */
    tm->tm_year = ((int)(dosdatetime >> 25) & 0x7f) + (1980 - YRBASE);
    tm->tm_mon  = ((int)(dosdatetime >> 21) & 0x0f) - 1;
    tm->tm_mday = ((int)(dosdatetime >> 16) & 0x1f);

    /* dissect time */
    tm->tm_hour = (int)((unsigned)dosdatetime >> 11) & 0x1f;
    tm->tm_min  = (int)((unsigned)dosdatetime >> 5) & 0x3f;
    tm->tm_sec  = (int)((unsigned)dosdatetime << 1) & 0x3e;

    m_time = mktime(tm);
    NATIVE_TO_TIMET(m_time)     /* NOP unless MSC 7.0 or Macintosh */
    TTrace((stderr, "  final m_time  =       %lu\n", (ulg)m_time));

#else /* !HAVE_MKTIME */

    int yr, mo, dy, hh, mm, ss;
#ifdef TOPS20
#   define YRBASE  1900
    struct tmx *tmx;
    char temp[20];
#else /* !TOPS20 */
#   define YRBASE  1970
    int leap;
    unsigned days;
    struct tm *tm;
#if (!defined(MACOS) && !defined(RISCOS) && !defined(QDOS) && !defined(TANDEM))
#ifdef WIN32
    TIME_ZONE_INFORMATION tzinfo;
    DWORD res;
#else /* ! WIN32 */
#ifndef BSD4_4   /* GRR:  change to !defined(MODERN) ? */
#if (defined(BSD) || defined(MTS) || defined(__GO32__))
    struct timeb tbp;
#else /* !(BSD || MTS || __GO32__) */
#ifdef DECLARE_TIMEZONE
    extern time_t timezone;
#endif
#endif /* ?(BSD || MTS || __GO32__) */
#endif /* !BSD4_4 */
#endif /* ?WIN32 */
#endif /* !MACOS && !RISCOS && !QDOS && !TANDEM */
#endif /* ?TOPS20 */


    /* dissect date */
    yr = ((int)(dosdatetime >> 25) & 0x7f) + (1980 - YRBASE);
    mo = ((int)(dosdatetime >> 21) & 0x0f) - 1;
    dy = ((int)(dosdatetime >> 16) & 0x1f) - 1;

    /* dissect time */
    hh = (int)((unsigned)dosdatetime >> 11) & 0x1f;
    mm = (int)((unsigned)dosdatetime >> 5) & 0x3f;
    ss = (int)((unsigned)dosdatetime & 0x1f) * 2;

#ifdef TOPS20
    tmx = (struct tmx *)malloc(sizeof(struct tmx));
    sprintf (temp, "%02d/%02d/%02d %02d:%02d:%02d", mo+1, dy+1, yr, hh, mm, ss);
    time_parse(temp, tmx, (char *)0);
    m_time = time_make(tmx);
    free(tmx);

#else /* !TOPS20 */

/*---------------------------------------------------------------------------
    Calculate the number of seconds since the epoch, usually 1 January 1970.
  ---------------------------------------------------------------------------*/

    /* leap = # of leap yrs from YRBASE up to but not including current year */
    leap = ((yr + YRBASE - 1) / 4);   /* leap year base factor */

    /* calculate days from BASE to this year and add expired days this year */
    days = (yr * 365) + (leap - 492) + ydays[mo];

    /* if year is a leap year and month is after February, add another day */
    if ((mo > 1) && ((yr+YRBASE)%4 == 0) && ((yr+YRBASE) != 2100))
        ++days;                 /* OK through 2199 */

    /* convert date & time to seconds relative to 00:00:00, 01/01/YRBASE */
    m_time = (time_t)((unsigned long)(days + dy) * 86400L +
                      (unsigned long)hh * 3600L +
                      (unsigned long)(mm * 60 + ss));
      /* - 1;   MS-DOS times always rounded up to nearest even second */
    TTrace((stderr, "dos_to_unix_time:\n"));
    TTrace((stderr, "  m_time before timezone = %lu\n", (ulg)m_time));

/*---------------------------------------------------------------------------
    Adjust for local standard timezone offset.
  ---------------------------------------------------------------------------*/

#if (!defined(MACOS) && !defined(RISCOS) && !defined(QDOS) && !defined(TANDEM))
#ifdef WIN32
    /* account for timezone differences */
    res = GetTimeZoneInformation(&tzinfo);
    if (res != TIME_ZONE_ID_INVALID)
    {
    m_time += 60*(tzinfo.Bias);
#else /* !WIN32 */
#if (defined(BSD) || defined(MTS) || defined(__GO32__))
#ifdef BSD4_4
    if ( (dosdatetime >= DOSTIME_2038_01_18) &&
         (m_time < (time_t)0x70000000L) )
        m_time = U_TIME_T_MAX;  /* saturate in case of (unsigned) overflow */
    if (m_time < (time_t)0L)    /* a converted DOS time cannot be negative */
        m_time = S_TIME_T_MAX;  /*  -> saturate at max signed time_t value */
    if ((tm = localtime(&m_time)) != (struct tm *)NULL)
        m_time -= tm->tm_gmtoff;                /* sec. EAST of GMT: subtr. */
#else /* !(BSD4_4 */
    ftime(&tbp);                                /* get `timezone' */
    m_time += tbp.timezone * 60L;               /* seconds WEST of GMT:  add */
#endif /* ?(BSD4_4 || __EMX__) */
#else /* !(BSD || MTS || __GO32__) */
    /* tzset was already called at start of process_zipfiles() */
    /* tzset(); */              /* set `timezone' variable */
#ifndef __BEOS__                /* BeOS DR8 has no timezones... */
    m_time += timezone;         /* seconds WEST of GMT:  add */
#endif
#endif /* ?(BSD || MTS || __GO32__) */
#endif /* ?WIN32 */
    TTrace((stderr, "  m_time after timezone =  %lu\n", (ulg)m_time));

/*---------------------------------------------------------------------------
    Adjust for local daylight savings (summer) time.
  ---------------------------------------------------------------------------*/

#ifndef BSD4_4  /* (DST already added to tm_gmtoff, so skip tm_isdst) */
    if ( (dosdatetime >= DOSTIME_2038_01_18) &&
         (m_time < (time_t)0x70000000L) )
        m_time = U_TIME_T_MAX;  /* saturate in case of (unsigned) overflow */
    if (m_time < (time_t)0L)    /* a converted DOS time cannot be negative */
        m_time = S_TIME_T_MAX;  /*  -> saturate at max signed time_t value */
    TIMET_TO_NATIVE(m_time)     /* NOP unless MSC 7.0 or Macintosh */
    if (((tm = localtime((time_t *)&m_time)) != NULL) && tm->tm_isdst)
#ifdef WIN32
        m_time += 60L * tzinfo.DaylightBias;    /* adjust with DST bias */
    else
        m_time += 60L * tzinfo.StandardBias;    /* add StdBias (normally 0) */
#else
        m_time -= 60L * 60L;    /* adjust for daylight savings time */
#endif
    NATIVE_TO_TIMET(m_time)     /* NOP unless MSC 7.0 or Macintosh */
    TTrace((stderr, "  m_time after DST =       %lu\n", (ulg)m_time));
#endif /* !BSD4_4 */
#ifdef WIN32
    }
#endif
#endif /* !MACOS && !RISCOS && !QDOS && !TANDEM */
#endif /* ?TOPS20 */

#endif /* ?HAVE_MKTIME */

    if ( (dosdatetime >= DOSTIME_2038_01_18) &&
         (m_time < (time_t)0x70000000L) )
        m_time = U_TIME_T_MAX;  /* saturate in case of (unsigned) overflow */
    if (m_time < (time_t)0L)    /* a converted DOS time cannot be negative */
        m_time = S_TIME_T_MAX;  /*  -> saturate at max signed time_t value */

    return m_time;

} /* end function dos_to_unix_time() */

Project: unzip
File: fileio.c

zusz_t makeint64(sig)
    ZCONST uch *sig;
{
#ifdef LARGE_FILE_SUPPORT
    /*
     * Convert intel style 'int64' variable to non-Intel non-16-bit
     * host format.  This routine also takes care of byte-ordering.
     */
    return (((zusz_t)sig[7]) << 56)
        + (((zusz_t)sig[6]) << 48)
        + (((zusz_t)sig[4]) << 32)
        + (zusz_t)((((ulg)sig[3]) << 24)
                 + (((ulg)sig[2]) << 16)
                 + (((unsigned)sig[1]) << 8)
                 + (sig[0]));

#else /* !LARGE_FILE_SUPPORT */

    if ((sig[7] | sig[6] | sig[5] | sig[4]) != 0)
        return (zusz_t)0xffffffffL;
    else
        return (zusz_t)((((ulg)sig[3]) << 24)
                      + (((ulg)sig[2]) << 16)
                      + (((unsigned)sig[1]) << 8)
                      + (sig[0]));

#endif /* ?LARGE_FILE_SUPPORT */
}

Project: unzip
File: fileio.c

unsigned char *uzmbschr(str, c)
    ZCONST unsigned char *str;
    unsigned int c;
{
    while(*str != '\0'){
        if (*str == c) {return (unsigned char *)str;}
        INCSTR(str);
    }
    return NULL;
}

Project: unzip
File: fileio.c

unsigned char *uzmbsrchr(str, c)
    ZCONST unsigned char *str;
    unsigned int c;
{
    unsigned char *match = NULL;
    while(*str != '\0'){
        if (*str == c) {match = (unsigned char *)str;}
        INCSTR(str);
    }
    return match;
}

Project: unzip
File: fileio.c

int flush(__G__ rawbuf, size, unshrink)
    __GDEF
    uch *rawbuf;
    ulg size;
    int unshrink;
#if (defined(USE_DEFLATE64) && defined(__16BIT__))
{
    int ret;

    /* On 16-bit systems (MSDOS, OS/2 1.x), the standard C library functions
     * cannot handle writes of 64k blocks at once.  For these systems, the
     * blocks to flush are split into pieces of 32k or less.
     */
    while (size > 0x8000L) {
        ret = partflush(__G__ rawbuf, 0x8000L, unshrink);
        if (ret != PK_OK)
            return ret;
        size -= 0x8000L;
        rawbuf += (extent)0x8000;
    }
    return partflush(__G__ rawbuf, size, unshrink);
} /* end function flush() */

Project: unzip
File: fileio.c

int UZ_EXP UzpPassword (pG, rcnt, pwbuf, size, zfn, efn)
    zvoid *pG;         /* pointer to UnZip's internal global vars */
    int *rcnt;         /* retry counter */
    char *pwbuf;       /* buffer for password */
    int size;          /* size of password buffer */
    ZCONST char *zfn;  /* name of zip archive */
    ZCONST char *efn;  /* name of archive entry being processed */
{
#if CRYPT
    int r = IZ_PW_ENTERED;
    char *m;
    char *prompt;

#ifndef REENTRANT
    /* tell picky compilers to shut up about "unused variable" warnings */
    (void)pG;
#endif

    if (*rcnt == 0) {           /* First call for current entry */
        *rcnt = 2;
        if ((prompt = (char *)malloc(2*FILNAMSIZ + 15)) != (char *)NULL) {
            sprintf(prompt, LoadFarString(PasswPrompt),
                    FnFilter1(zfn), FnFilter2(efn));
            m = prompt;
        } else
            m = (char *)LoadFarString(PasswPrompt2);
    } else {                    /* Retry call, previous password was wrong */
        (*rcnt)--;
        prompt = NULL;
        m = (char *)LoadFarString(PasswRetry);
    }

    m = getp(__G__ m, pwbuf, size);
    if (prompt != (char *)NULL) {
        free(prompt);
    }
    if (m == (char *)NULL) {
        r = IZ_PW_ERROR;
    }
    else if (*pwbuf == '\0') {
        r = IZ_PW_CANCELALL;
    }
    return r;

#else /* !CRYPT */
    /* tell picky compilers to shut up about "unused variable" warnings */
    (void)pG; (void)rcnt; (void)pwbuf; (void)size; (void)zfn; (void)efn;

    return IZ_PW_ERROR;  /* internal error; function should never get called */
#endif /* ?CRYPT */

} /* end function UzpPassword() */

Project: unzip
File: fileio.c

char *plastchar(ptr, len)
    ZCONST char *ptr;
    extent len;
{
    unsigned clen;
    ZCONST char *oldptr = ptr;
    while(*ptr != '\0' && len > 0){
        oldptr = ptr;
        clen = CLEN(ptr);
        ptr += clen;
        len -= clen;
    }
    return (char *)oldptr;
}

Project: unzip
File: fileio.c

int UZ_EXP UzpInput(pG, buf, size, flag)
    zvoid *pG;    /* globals struct:  always passed */
    uch *buf;     /* preformatted string to be printed */
    int *size;    /* (address of) size of buf and of returned string */
    int flag;     /* flag bits (bit 0: no echo) */
{
    /* tell picky compilers to shut up about "unused variable" warnings */
    (void)pG; (void)buf; (void)flag;

    *size = 0;
    return 0;

} /* end function UzpInput() */

Project: unzip
File: fileio.c

int UZ_EXP UzpMessagePrnt(pG, buf, size, flag)
    zvoid *pG;   /* globals struct:  always passed */
    uch *buf;    /* preformatted string to be printed */
    ulg size;    /* length of string (may include nulls) */
    int flag;    /* flag bits */
{
    /* IMPORTANT NOTE:
     *    The name of the first parameter of UzpMessagePrnt(), which passes
     *    the "Uz_Globs" address, >>> MUST <<< be identical to the string
     *    expansion of the __G__ macro in the REENTRANT case (see globals.h).
     *    This name identity is mandatory for the LoadFarString() macro
     *    (in the SMALL_MEM case) !!!
     */
    int error;
    uch *q=buf, *endbuf=buf+(unsigned)size;
#ifdef MORE
    uch *p=buf;
#if (defined(SCREENWIDTH) && defined(SCREENLWRAP))
    int islinefeed = FALSE;
#endif
#endif
    FILE *outfp;


/*---------------------------------------------------------------------------
    These tests are here to allow fine-tuning of UnZip's output messages,
    but none of them will do anything without setting the appropriate bit
    in the flag argument of every Info() statement which is to be turned
    *off*.  That is, all messages are currently turned on for all ports.
    To turn off *all* messages, use the UzpMessageNull() function instead
    of this one.
  ---------------------------------------------------------------------------*/

#if (defined(OS2) && defined(DLL))
    if (MSG_NO_DLL2(flag))  /* if OS/2 DLL bit is set, do NOT print this msg */
        return 0;
#endif
#ifdef WINDLL
    if (MSG_NO_WDLL(flag))
        return 0;
#endif
#ifdef WINDLL
    if (MSG_NO_WGUI(flag))
        return 0;
#endif
/*
#ifdef ACORN_GUI
    if (MSG_NO_AGUI(flag))
        return 0;
#endif
 */
#ifdef DLL                 /* don't display message if data is redirected */
    if (((Uz_Globs *)pG)->redirect_data &&
        !((Uz_Globs *)pG)->redirect_text)
        return 0;
#endif

    if (MSG_STDERR(flag) && !((Uz_Globs *)pG)->UzO.tflag)
        outfp = (FILE *)stderr;
    else
        outfp = (FILE *)stdout;

#ifdef QUERY_TRNEWLN
    /* some systems require termination of query prompts with '\n' to force
     * immediate display */
    if (MSG_MNEWLN(flag)) {   /* assumes writable buffer (e.g., slide[]) */
        *endbuf++ = '\n';     /*  with room for one more char at end of buf */
        ++size;               /*  (safe assumption:  only used for four */
    }                         /*  short queries in extract.c and fileio.c) */
#endif

    if (MSG_TNEWLN(flag)) {   /* again assumes writable buffer:  fragile... */
        if ((!size && !((Uz_Globs *)pG)->sol) ||
            (size && (endbuf[-1] != '\n')))
        {
            *endbuf++ = '\n';
            ++size;
        }
    }

#ifdef MORE
# ifdef SCREENSIZE
    /* room for --More-- and one line of overlap: */
#  if (defined(SCREENWIDTH) && defined(SCREENLWRAP))
    SCREENSIZE(&((Uz_Globs *)pG)->height, &((Uz_Globs *)pG)->width);
#  else
    SCREENSIZE(&((Uz_Globs *)pG)->height, (int *)NULL);
#  endif
    ((Uz_Globs *)pG)->height -= 2;
# else
    /* room for --More-- and one line of overlap: */
    ((Uz_Globs *)pG)->height = SCREENLINES - 2;
#  if (defined(SCREENWIDTH) && defined(SCREENLWRAP))
    ((Uz_Globs *)pG)->width = SCREENWIDTH;
#  endif
# endif
#endif /* MORE */

    if (MSG_LNEWLN(flag) && !((Uz_Globs *)pG)->sol) {
        /* not at start of line:  want newline */
#ifdef OS2DLL
        if (!((Uz_Globs *)pG)->redirect_text) {
#endif
            putc('\n', outfp);
            fflush(outfp);
#ifdef MORE
            if (((Uz_Globs *)pG)->M_flag)
            {
#if (defined(SCREENWIDTH) && defined(SCREENLWRAP))
                ((Uz_Globs *)pG)->chars = 0;
#endif
                ++((Uz_Globs *)pG)->numlines;
                ++((Uz_Globs *)pG)->lines;
                if (((Uz_Globs *)pG)->lines >= ((Uz_Globs *)pG)->height)
                    (*((Uz_Globs *)pG)->mpause)((zvoid *)pG,
                      LoadFarString(MorePrompt), 1);
            }
#endif /* MORE */
            if (MSG_STDERR(flag) && ((Uz_Globs *)pG)->UzO.tflag &&
                !isatty(1) && isatty(2))
            {
                /* error output from testing redirected:  also send to stderr */
                putc('\n', stderr);
                fflush(stderr);
            }
#ifdef OS2DLL
        } else
           REDIRECTC('\n');
#endif
        ((Uz_Globs *)pG)->sol = TRUE;
    }

    /* put zipfile name, filename and/or error/warning keywords here */

#ifdef MORE
    if (((Uz_Globs *)pG)->M_flag
#ifdef OS2DLL
         && !((Uz_Globs *)pG)->redirect_text
#endif
                                                 )
    {
        while (p < endbuf) {
            if (*p == '\n') {
#if (defined(SCREENWIDTH) && defined(SCREENLWRAP))
                islinefeed = TRUE;
            } else if (SCREENLWRAP) {
                if (*p == '\r') {
                    ((Uz_Globs *)pG)->chars = 0;
                } else {
#  ifdef TABSIZE
                    if (*p == '\t')
                        ((Uz_Globs *)pG)->chars +=
                            (TABSIZE - (((Uz_Globs *)pG)->chars % TABSIZE));
                    else
#  endif
                        ++((Uz_Globs *)pG)->chars;

                    if (((Uz_Globs *)pG)->chars >= ((Uz_Globs *)pG)->width)
                        islinefeed = TRUE;
                }
            }
            if (islinefeed) {
                islinefeed = FALSE;
                ((Uz_Globs *)pG)->chars = 0;
#endif /* (SCREENWIDTH && SCREEN_LWRAP) */
                ++((Uz_Globs *)pG)->numlines;
                ++((Uz_Globs *)pG)->lines;
                if (((Uz_Globs *)pG)->lines >= ((Uz_Globs *)pG)->height)
                {
                    if ((error = WriteTxtErr(q, p-q+1, outfp)) != 0)
                        return error;
                    fflush(outfp);
                    ((Uz_Globs *)pG)->sol = TRUE;
                    q = p + 1;
                    (*((Uz_Globs *)pG)->mpause)((zvoid *)pG,
                      LoadFarString(MorePrompt), 1);
                }
            }
            INCSTR(p);
        } /* end while */
        size = (ulg)(p - q);   /* remaining text */
    }
#endif /* MORE */

    if (size) {
#ifdef OS2DLL
        if (!((Uz_Globs *)pG)->redirect_text) {
#endif
            if ((error = WriteTxtErr(q, size, outfp)) != 0)
                return error;
#ifndef VMS     /* 2005-09-16 SMS.  See note at "WriteTxtErr()", above. */
            fflush(outfp);
#endif
            if (MSG_STDERR(flag) && ((Uz_Globs *)pG)->UzO.tflag &&
                !isatty(1) && isatty(2))
            {
                /* error output from testing redirected:  also send to stderr */
                if ((error = WriteTxtErr(q, size, stderr)) != 0)
                    return error;
                fflush(stderr);
            }
#ifdef OS2DLL
        } else {                /* GRR:  this is ugly:  hide with macro */
            if ((error = REDIRECTPRINT(q, size)) != 0)
                return error;
        }
#endif /* OS2DLL */
        ((Uz_Globs *)pG)->sol = (endbuf[-1] == '\n');
    }
    return 0;

} /* end function UzpMessagePrnt() */

Project: unzip
File: fileio.c

static int is_vms_varlen_txt(__G__ ef_buf, ef_len)
    __GDEF
    uch *ef_buf;        /* buffer containing extra field */
    unsigned ef_len;    /* total length of extra field */
{
    unsigned eb_id;
    unsigned eb_len;
    uch *eb_data;
    unsigned eb_datlen;
#define VMSREC_C_UNDEF  0
#define VMSREC_C_VAR    2
    uch vms_rectype = VMSREC_C_UNDEF;
 /* uch vms_fileorg = 0; */ /* currently, fileorg is not used... */

#define VMSPK_ITEMID            0
#define VMSPK_ITEMLEN           2
#define VMSPK_ITEMHEADSZ        4

#define VMSATR_C_RECATTR        4
#define VMS_FABSIG              0x42414656      /* "VFAB" */
/* offsets of interesting fields in VMS fabdef structure */
#define VMSFAB_B_RFM            31      /* record format byte */
#define VMSFAB_B_ORG            29      /* file organization byte */

    if (ef_len == 0 || ef_buf == NULL)
        return FALSE;

    while (ef_len >= EB_HEADSIZE) {
        eb_id = makeword(EB_ID + ef_buf);
        eb_len = makeword(EB_LEN + ef_buf);

        if (eb_len > (ef_len - EB_HEADSIZE)) {
            /* discovered some extra field inconsistency! */
            Trace((stderr,
              "is_vms_varlen_txt: block length %u > rest ef_size %u\n", eb_len,
              ef_len - EB_HEADSIZE));
            break;
        }

        switch (eb_id) {
          case EF_PKVMS:
            /* The PKVMS e.f. raw data part consists of:
             * a) 4 bytes CRC checksum
             * b) list of uncompressed variable-length data items
             * Each data item is introduced by a fixed header
             *  - 2 bytes data type ID
             *  - 2 bytes <size> of data
             *  - <size> bytes of actual attribute data
             */

            /* get pointer to start of data and its total length */
            eb_data = ef_buf+(EB_HEADSIZE+4);
            eb_datlen = eb_len-4;

            /* test the CRC checksum */
            if (makelong(ef_buf+EB_HEADSIZE) !=
                crc32(CRCVAL_INITIAL, eb_data, (extent)eb_datlen))
            {
                Info(slide, 1, ((char *)slide,
                  "[Warning: CRC error, discarding PKWARE extra field]\n"));
                /* skip over the data analysis code */
                break;
            }

            /* scan through the attribute data items */
            while (eb_datlen > 4)
            {
                unsigned fldsize = makeword(&eb_data[VMSPK_ITEMLEN]);

                /* check the item type word */
                switch (makeword(&eb_data[VMSPK_ITEMID])) {
                  case VMSATR_C_RECATTR:
                    /* we have found the (currently only) interesting
                     * data item */
                    if (fldsize >= 1) {
                        vms_rectype = eb_data[VMSPK_ITEMHEADSZ] & 15;
                     /* vms_fileorg = eb_data[VMSPK_ITEMHEADSZ] >> 4; */
                    }
                    break;
                  default:
                    break;
                }
                /* skip to next data item */
                eb_datlen -= fldsize + VMSPK_ITEMHEADSZ;
                eb_data += fldsize + VMSPK_ITEMHEADSZ;
            }
            break;

          case EF_IZVMS:
            if (makelong(ef_buf+EB_HEADSIZE) == VMS_FABSIG) {
                if ((eb_data = extract_izvms_block(__G__
                                                   ef_buf+EB_HEADSIZE, eb_len,
                                                   &eb_datlen, NULL, 0))
                    != NULL)
                {
                    if (eb_datlen >= VMSFAB_B_RFM+1) {
                        vms_rectype = eb_data[VMSFAB_B_RFM] & 15;
                     /* vms_fileorg = eb_data[VMSFAB_B_ORG] >> 4; */
                    }
                    free(eb_data);
                }
            }
            break;

          default:
            break;
        }

        /* Skip this extra field block */
        ef_buf += (eb_len + EB_HEADSIZE);
        ef_len -= (eb_len + EB_HEADSIZE);
    }

    return (vms_rectype == VMSREC_C_VAR);

} /* end function is_vms_varlen_txtfile() */

Project: unzip
File: fileio.c

int zstat(p, s)
    ZCONST char *p;
    struct stat *s;
{
    return (stat((char *)p,s) >= 0? 0 : (-1));
}

Project: unzip
File: fileio.c

ush makeword(b)
    ZCONST uch *b;
{
    /*
     * Convert Intel style 'short' integer to non-Intel non-16-bit
     * host format.  This routine also takes care of byte-ordering.
     */
    return (ush)((b[1] << 8) | b[0]);
}

Project: unzip
File: fileio.c

char *str2oem(dst, src)
    char *dst;                          /* destination buffer */
    register ZCONST char *src;          /* source string */
{
#ifdef INTERN_TO_OEM
    INTERN_TO_OEM(src, dst);
#else
    register uch c;
    register char *dstp = dst;

    do {
        c = (uch)foreign(*src++);
        *dstp++ = (char)ASCII2OEM(c);
    } while (c != '\0');
#endif

    return dst;
}

Project: unzip
File: fileio.c

char *fzofft(__G__ val, pre, post)
    __GDEF
    zoff_t val;
    ZCONST char *pre;
    ZCONST char *post;
{
    /* Storage cylinder. (now in globals.h) */
    /*static char fzofft_buf[FZOFFT_NUM][FZOFFT_LEN];*/
    /*static int fzofft_index = 0;*/

    /* Temporary format string storage. */
    char fmt[16];

    /* Assemble the format string. */
    fmt[0] = '%';
    fmt[1] = '\0';             /* Start after initial "%". */
    if (pre == FZOFFT_HEX_WID)  /* Special hex width. */
    {
        strcat(fmt, FZOFFT_HEX_WID_VALUE);
    }
    else if (pre == FZOFFT_HEX_DOT_WID) /* Special hex ".width". */
    {
        strcat(fmt, ".");
        strcat(fmt, FZOFFT_HEX_WID_VALUE);
    }
    else if (pre != NULL)       /* Caller's prefix (width). */
    {
        strcat(fmt, pre);
    }

    strcat(fmt, FZOFFT_FMT);   /* Long or long-long or whatever. */

    if (post == NULL)
        strcat(fmt, "d");      /* Default radix = decimal. */
    else
        strcat(fmt, post);     /* Caller's radix. */

    /* Advance the cylinder. */
    G.fzofft_index = (G.fzofft_index + 1) % FZOFFT_NUM;

    /* Write into the current chamber. */
    sprintf(G.fzofft_buf[G.fzofft_index], fmt, val);

    /* Return a pointer to this chamber. */
    return G.fzofft_buf[G.fzofft_index];
}