UnZip, version 5.51, 22 May 2004

Features added (or removed):

5.51a (09 Mar 02):
 - no new features

5.51b (11 Jan 03):
 - TANDEM: new -r option to suppress extension merging [Dave Smith]
 - WinCE, new port in addition to pUnZip (GUI): command line tool usable for
    "batch" processes (not quite finished, needs "makefile" cleanup, tests,
    and refinements) [Simon Roberts, SPC]
 - SET_DIR_ATTRIB feature code revised and reorganized to allow seamless
    adaption to different OS environments; added support for restoring
    directory timestamps to the WIN32 port [Kai-Uwe-Rommel, SPC]

5.51c (13 May 03):
 - WinCE command line tool integration is (almost) finished: project file is
    cleaned up and works with VC-embedded 3.0; port needs testing... [SPC]

5.51d (27 Feb 04):
 - Cygwin is recognized as a target in the Unix port
    [Charles Wilson, Cosmin Truta, SPC]
 - remove support for quoting characters from all ports; this feature was a
    security hole [SPC]

5.51e (01 Mar 04):
 - Win32 port (list.c, unzpriv.h, win32.c, w32cfg.h): the date in (non-ZipInfo)
    listings is displayed using the separator given by the system's locale,
    when available [Cosmin Truta]

5.51f (16 Apr 04):
 - no new features

5.51 final (22 May 04):
 - no new features

Bugs fixed:

5.51a (09 Mar 02):
 - process.c: corrected process_zipfiles() message and return code when a
    wildcard archive spec matches exactly one "non-ziparchive" file [SPC]
 - fileio.c: fixed partflush() "-a" textmode output for 16-bit ports
    (was a new bug, introduced in 5.50) [SPC]
 - inflate.c: modified CHECK_EOF code to allow "virtual" reading beyond EOF in
    NEEDBITS() macro to fix an old but rarely triggered extraction bug [SPC]
 - amiga/flate.a, human68k/flate.s: attempted to synchronize with changed
    C version [SPC]
 - explode.c, inflate.c, globals.h, unzpriv.h: cleaned up some "signed vs.
    unsigned" inconsistencies [SPC]
 - inflate.c: provided workaround for CHECK_EOF problem when using zlib (send
    a fake input byte when seeing error because of "premature" EOF) [SPC]
 - unzpriv.h: disabled DEFLATE64 when compiling/linking against zlib [SPC]
 - windll/windll_lc.def: added missing file to distribution archive [SPC]
 - windll/vb/vbunzip.bas: corrected UZDLLServ callback function - the second
    function parameter is the size of the archive entry, not the length of
    the message string [SPC]

5.51b (11 Jan 03):
 - consts.h, funzip.c, inflate.c, unzpriv.h: changed type of mask_bits[] array
    into "unsigned" for better core-loop performance [SPC]
 - amiga/flate.a, human68k/flate.s: small correction (optimization) to changes
    in 5.51a, removed debugging stuff [Paul Kienitz]
 - fileio.c: added display of system error string to error message shown when
    open_input_file() fails at the [f]open() function [SPC]
 - process.c: slightly generalize summary message when no Zip archive could be
    found or opened (file may be present but unaccessible due to locking or
    insufficient permission) [Santiago Vila, SPC]
 - globals.h: undefine zlib_version macro when compiling against zlib to work
    around a naming conflict [SPC]
 - unzpriv.h: do not define WILD_STAT_BUG for Borland C on WIN32 [SPC]
 - unzip.h, unzpriv.h: added precautions for some WIN32 compiler environments
    which also try to appear as UNIX compatible [SPC]
 - tandem/tanunz.c bugfix: set file code of generic (non-Tandem) non-text files
    to 0 (unstructured) instead of 100 (object file) [Dave Smith]
 - win32/win32.c: added recognition for Borland C++ Builder 6.0 to version()
    [Brad Clarke]
 - tandem/tanunz.c bugfix: set file code of Enscribe files containing text data
    to 101 (Edit) [Dave Smith]
 - api.c writeToMemory(), fileio.c flush(): Added check for buffer overflow
    when extracting to memory and output buffer is different from decompression
    work area [Samuel R. Blackburn, SPC]
 - tandem configuration bugfix: Deflate64 was incompatible with non-WIDE memory
    models; fixed OUTBUFSIZ logic and "unsigned" vs. "size_t" incompatibility
    issues [Dave Smith, SPC]

5.51c (13 May 03):
 - OS2, WIN32, WinCE: '\\' chars are not allowed in file names, map them to '_'
    to prevent misinterpreting them as directory separators [David F, SPC]
 - windll, VB example: updated integration of "Open file" common dialog and
    added special Readme text to document installation and maintenance issues
    of the VB example code [ED, SPC]
 - unzpriv.h: enclosed shift op expressions in definitions of MPN_xxx macro
    constant with parentheses (for safety) [Cosmin Truta]
 - win32/win32.c: fixed bugs in set_direc_attribs(), do not try to set dirtimes
    on Win9x systems [Cosmin Truta]
 - SET_DIR_ATTRIBS option: changed defer_dir_attribs() function interface to
    allow non-error return without deferred direntry data [SPC]
 - BeOS, Theos: updated SET_DIR_ATTRIBS code to work with the revised generic
    code [SPC]
 - WinCE port: revitalized WinCE port code, updated VC project files, added
    "VC embedded Tools 3.0" project file [SPC]
 - unzip.h: added rule to define UNIX flag for NetBSD [Ray Phillips]
 - unix/Makefile: added "-DUNIX" to default CF settings, to get rid of misc
    problems concerning auto-detection of a "Unix" environment [SPC]
 - LICENSE: include SFXWiz in the exeption clause concerning distribution
    of self-extracting archives [Greg Roelofs]
 - Amiga, AosVS, Atari, BeOS, FlexOS, Human68K, MacOS, MSDOS, Novell, OS/2,
    Unix, Win32, (Theos, WinCE - only code sync, no bug to fix):
    fixed hole in directory traversal security code which did not recognize
    "../" when path component contained some control character which was
    silently skipped ["jelmer", SPC]

5.51d (27 Feb 04):
 - unix/unix.c: added recognition for Cygwin, i586 and i686 to version()
    [Cosmin Truta]
 - unzip.h, unzpriv.h, unix/unzcfg.h: allowed Cygwin to compile as a Unix port
    [Charles Wilson, Cosmin Truta, SPC]
 - unix/unxcfg.h: added inclusion of <utime.h> for DG/UX to fix setting
    of file time-stamps [Dave Lovelace]
 - macos/source/macstat.c: corrected size in zeroing instruction of stat buffer
    [Yamaga Tomonori]
 - extract.c: fixed memory leak in SET_DIR_ATTRIB code in case of premature
    exit (disk full or user break), execute deferred tasks for processed
    entries in this case [SPC]
 - unix/zipgrep: allow grep of filenames with embedded spaces [Greg Roelofs]
 - win32: update support for newer Cygwin releases [Cosmin Truta]
 - use central directory's entry names for extraction/testing, emit warning for
    local/central entry name difference (bug report by Jan Echternach) [SPC]
 - all SYMLINKS-capable ports (AOS/VS, Atari, BeOS, Unix): defer creation of
    symlinks until all extractions for current archive are finished, to close
    a security hole (bug report by Jan Echternach)
    (Changed: globals.h, unzpriv.h, extract.c, [system]/[system].c) [SPC]
 - crypt.h: changed default setting for Zip to enable crypt support [SPC]
 - partial documentation updates, as suggested by Greg [SPC]

5.51e (01 Mar 04):
 - unzpriv.h: guarded some definitions of USE_EF_UT_TIME [Cosmin Truta]
 - Cygwin: putenv() must not be called in iz_w32_prepareTZenv() [Cosmin Truta]
 - unix/unxcfg.h: include <unistd.h> for Cygwin [Cosmin Truta]
 - unix/unix.c: enable old code that sets DIRENT symbol for _POSIX_VERSION
    environments [Cosmin Truta]
 - win32/Makefile.bc: updated the "clean" target [Cosmin Truta]
 - win32/Makefile.gcc: updated CC_CPU_OPT to "-mcpu=pentiumpro";
    fixed the "clean" target [Cosmin Truta]
 - man/unzip.1: added note about the use of the "-:" option [Lon Hohberger]
 - merged in usable changes (see above) from Cosmin's bogus 5.51d beta archive
    variant [SPC]
 - win32: guarded "NTSD integration code" (not working, under construction)
    with preprocessor symbol NTSD_DEV to allow intermediate compilation and
    testing of the current state [SPC]

5.51f (16 Apr 04):
 - Acorn: updated/fixed Makefile [Darren Salt]
 - win32/Makefile: revised (experimental) USE_ZLIB support to work with the
    current ZLIB release 1.2.1; [Cosmin Truta, Christian Spieler]
 - win32/Makefile: "clean" target simplified for Win9x support [Cosmin Truta]
 - INSTALL: describe DATE_SEPCHAR option [Cosmin Truta]
 - unzip.c: make command-arg "\\"-to-"/" conversion MBCS-safe [SPC]
 - BeOS, QDOS, Tandem, Theos, Unix - close_outfile(): to make compilers happy,
    use union for matching "struct utimbuf" with "iztimes" [Jan Echternach]
 - all SYMLINKS-capable ports (AOS/VS, Atari, BeOS, Unix): check for allocation
    size overflow of "deferring symlink" structure (reported by Jan Echternach)
    (Changed: [system]/[system].c) [SPC]
 - api.c - redirect_outfile(): check for allocation overflow in textmode when
    lenEOL != 1; check against integer overflow for 16-bit ports [SPC]
 - fileio.c - open_outfile(): use G.lrec.ucsize throughoutly instead of
    G.pInfo.uncompr_size [SPC]
 - extract.c - extract_or_test_entrylist(): check for ucsize vs. csize mismatch
    in STORED entries; synchronize and emit warning message [SPC]

5.51f2 (16 Apr 04):
 - extract.c: fixed compilation error (misplaced ')') [Cosmin Truta]
 - win32/Makefile: added missing rule to build unzsfx32.lib [Cosmin Truta]
 - INSTALL, History.551: fixed some minor typos in docs [Cosmin Truta]

5.51 final (22 May 04):
 - no code changes
 - updated WHERE file, History.551 file, and various copyright and release
    dates where necessary [GRR]
 - removed "beta" status from unzver.h [GRR]

==================

These changes occurred in beta versions 5.51a to 5.51.  This list may have
left out some bugfixes and even some features...void where prohibited, your
mileage may vary, etc., etc.

Christian Spieler