Projects / UnZip

UnZip

UnZip will list, test, or extract files from a ZIP archive, commonly found on DOS and Windows systems. A companion program, Zip, creates ZIP archives; both are part of the Info-ZIP project. Both programs are compatible with archives created by PKWARE's PKZIP or Nico Mak's WinZip, but in many cases the program options or default behaviors differ.

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Recent releases

  •  31 Jan 2012 12:21

    Release Notes: New features include support for PKWARE ZIP64 extensions, large file support, support for the bzip2 compression method, support for UTF-8 encoded entry names, support for restoration of symbolic link attributes, and support for restoration of 32-bit UID/GID data. A new "-D" option was added to suppress restoration of timestamps for extracted directory entries. A "Time of Creation/Time of Use" vulnerability when setting attributes of extracted files was resolved (CVE ID CAN-2005-2475). A memory leak when processing invalid deflated data was fixed. Further bugfixes and enhancements were made.

    •  11 Mar 2005 21:02

      Release Notes: This is a maintenance release that adds support for the VCEmbedded 3.0 WinCE compiler and fixes various minor bugs (none security-related).

      •  24 May 2004 03:02

        Release Notes: This is primarily a security-fix release, correcting a textmode data-corruption bug in 16-bit ports and several directory-traversal flaws (involving invalid filename characters, quoted characters, symlink traversal, and local/central-directory filename mismatches). It also adds support for restoring directory timestamps under Windows.

        •  08 Jun 2002 17:03

          Release Notes: Support for PKWARE's Deflate64 compression method, support for simple "execute command after extraction" in UnZipSFX (compile sources with CHEAP_SFX_AUTORUN defined), and a fix for a directory-traversal security hole with a new "-:" option to override.

          •  21 Aug 2001 22:04

            Release Notes: This release removes unreduce.c (now available only as a separate add-on archive) and the Amiga timelib code to eliminate final distribution restrictions beyond the BSD-like Info-ZIP license. There is a generic replacement for the timelib code. Filename mapping of Unix ``dot'' files to DOS 8.3 format has been improved.

            Recent comments

            23 Nov 2001 18:30 roelofs

            Re: the source .tgz is in a different place

            > New location: http://www.gzip.org/zlib

            That is incorrect. The zlib in-memory, deflate/inflate compression library is there (or at http://www.zlib.org/), but Zip and UnZip are separate (and older) command-line utilities for processing zipfiles. They live at http://www.info-zip.org/pub/infozip/
            (web pages) and ftp://ftp.info-zip.org/pub/infozip/ (files).


            Note that UnZip can use zlib, but this is optional.

            28 Jul 2001 21:10 dryft

            the source .tgz is in a different place
            New location: http://www.gzip.org/zlib

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