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- __________________________________________________________________________
- This is the Info-ZIP file COPYING (for UnZip), last updated 17 Jul 2000.
- __________________________________________________________________________
- FIRST NOTE:
- This file contains some details about the copyright history of
- contributions to the UnZip project.
- Additionally, it summarises some exceptions to the general BSD-like
- copyright found in LICENSE that covers our generic code and most of
- the system specific ports.
- Please read LICENSE first to find out what is allowed to do with
- Info-ZIP's UnZip code.
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
- There are currently two explicit copyrights on portions of UnZip
- code (at least, of which Info-ZIP is aware):
- Jim Luther's Mac OS File Manager interface code; and Christopher Evans'
- MacBinaryIII coding code (for the MacOS port).. These copyrights
- are discussed in more detail below.
- All remaining code is now (starting with UnZip version 5.41) covered
- by the new Info-ZIP license. For details, please read the acompaning
- file LICENSE. The terms and conditions in this license supersede the
- copyright conditions of the contributions by Igor Mandrichenko
- (vms/vms.c), Greg Roelofs (zipinfo.c, new version of unshrink.c),
- Mike White (Windows DLL code in "windll/*"), Steve P. Miller (Pocket
- UnZip GUI "wince/*"), and Mark Adler (inflate/explode decompresseion
- core routines, previously put into the public domain). All these
- Info-ZIP contributors (or "primary" authors) have permitted us to
- replace their copyright notes by the Info-ZIP License.
- Frequently Asked Questions regarding (re)distribution of Zip and UnZip
- are near the end of this file.
- There are no known patents on any of the code in UnZip. Unisys
- claims a patent on LZW encoding and on LZW decoding _in an apparatus
- that performs LZW encoding_, but the patent appears to exempt a stand-
- alone decoder (as in UnZip's unshrink.c). Unisys has publicly claimed
- otherwise, but the issue has never been tested in court. Since this
- point is unclear, unshrinking is not enabled by default. It is the
- responsibility of the user to make his or her peace with Unisys and
- its licensing requirements. (unshrink.c may be removed from future
- releases altogether.)
- __________________________________________________________________________
- The original unzip source code has been extensively modified and
- almost entirely rewritten (changes include random zipfile access
- rather than sequential; replacement of unimplode() with explode();
- replacement of old unshrink() with new (unrelated) unshrink(); re-
- placement of output routines; addition of inflate(), wildcards,
- filename-mapping, text translation, ...; etc.). As far as we can
- tell, only the core code of the unreduce method remained substantially
- similar to Mr. Smith's original source. As of UnZip 5.42, the complete
- core code is now covered by the Info-ZIP Licence. Therefore, support
- for the reduce method has been removed.
- The drop of the reduce method should only affect some test archives,
- reducing was never used in any publically distributed Zip program.
- For pathologic cases where support for reduced archive entries is
- needed, the unreduce code copyrighted by Samuel H. Smith is available
- as a separate distribution (the restricted copyright of this code is
- cited below in the "historical" section).
- The following copyright applies to the Mac OS File Manager interface code
- (macos/source/macstuff.[ch]), distributed with UnZip 5.4 and later:
- * MoreFiles
- *
- * A collection of File Manager and related routines
- *
- * by Jim Luther (Apple Macintosh Developer Technical Support Emeritus)
- * with significant code contributions by Nitin Ganatra
- * (Apple Macintosh Developer Technical Support Emeritus)
- * Copyright 1992-1998 Apple Computer, Inc.
- * Portions copyright 1995 Jim Luther
- * All rights reserved.
- * The Package "More Files" is distributed under the following
- * license terms:
- *
- * "You may incorporate this sample code into your
- * applications without restriction, though the
- * sample code has been provided "AS IS" and the
- * responsibility for its operation is 100% yours.
- * However, what you are not permitted to do is to
- * redistribute the source as "DSC Sample Code" after
- * having made changes. If you're going to
- * redistribute the source, we require that you make
- * it clear in the source that the code was descended
- * from Apple Sample Code, but that you've made
- * changes."
- The usage terms of this copyright note are compatible with the
- Info-ZIP license, they do not add further restrictions.
- The following copyright applies to the Mac OS "macbin3" decoding code
- (extra field compatibility with ZipIt):
- * MacBinaryIII.h
- *
- * Copyright 1997 Christopher Evans (cevans@poppybank.com)
- *
- * Basic encoding and decoding of Macintosh files to the
- * MacBinary III spec.
- * ----------------------------------------------------------------------
- * This source is copyrighted by Christopher Evans (cevans@poppybank.com)
- * (available at ftp://ftp.lazerware.com/MacBinaryIII_src_C.sit
- * homepage of Leonard Rosenthol leonardr@netcom.com)
- This copyright note does not contain any usage terms. So, we assume
- that this code is freely reusable until we are proved wrong...
- --------------------------------------------------------------------------
- The remaining copyright notes have been superseeded by the new
- Info-ZIP license, with explicit permission from the respective
- original authors. They are cited here for historical reasons,
- only:
- The following copyright applies to the full-featured unreduce.c
- (now distributed separately):
- * Copyright 1989 Samuel H. Smith; All rights reserved
- *
- * Do not distribute modified versions without my permission.
- * Do not remove or alter this notice or any other copyright notice.
- * If you use this in your own program you must distribute source code.
- * Do not use any of this in a commercial product.
- Regarding the first stipulation, Mr. Smith was tracked down in southern
- California some years back [Samuel H. Smith, The Tool Shop; as of mid-
- May 1994, (213) 851-9969 (voice), (213) 887-2127(?) (subscription BBS),
- 71150.2731@compuserve.com]:
- "He says that he thought that whoever contacted him understood that
- he has no objection to the Info-ZIP group's inclusion of his code.
- His primary concern is that it remain freely distributable, he said."
- Despite the fact that our "normal" code has been entirely rewritten
- and by default no longer contains any of Mr. Smith's code, Info-ZIP
- remains indebted and grateful to him. We hope he finds our contribu-
- tions as useful as we have his.
- Note that the third and fourth stipulations still apply to any com-
- pany that wishes to incorporate the unreduce code into its products;
- if you wish to do so, you must contact Mr. Smith directly regarding
- licensing.
- -----
- The following copyright applied to most of the VMS code in vms.c,
- distributed with UnZip version 4.2 and later:
- * Copyright (c) 1992-93 Igor Mandrichenko.
- * Permission is granted to any individual or institution to use, copy,
- * or redistribute this software so long as all of the original files
- * are included unmodified and that this copyright notice is retained.
- -----
- The following copyright applied to the new version of unshrink.c,
- distributed with UnZip version 5.2 and later:
- * Copyright (c) 1994 Greg Roelofs.
- * Permission is granted to any individual/institution/corporate
- * entity to use, copy, redistribute or modify this software for
- * any purpose whatsoever, subject to the conditions noted in the
- * Frequently Asked Questions section below, plus one additional
- * condition: namely, that my name not be removed from the source
- * code. (Other names may, of course, be added as modifications
- * are made.) Corporate legal staff (like at IBM :-) ) who have
- * problems understanding this can contact me through Zip-Bugs...
- -----
- The following copyright applied to the Windows DLL code (windll/*),
- distributed with UnZip version 5.2 and later:
- * Copyright (c) 1996 Mike White.
- * Permission is granted to any individual or institution to use,
- * copy, or redistribute this software so long as all of the original
- * files are included, that it is not sold for profit, and that this
- * copyright notice is retained.
- -----
- The following copyright applied to the Windows CE GUI port, ``Pocket
- UnZip,'' distributed with UnZip version 5.3 and later:
- * All the source files for Pocket UnZip, except for components
- * written by the Info-ZIP group, are copyrighted 1997 by Steve P.
- * Miller. The product "Pocket UnZip" itself is property of the
- * author and cannot be altered in any way without written consent
- * from Steve P. Miller.
- -----
- The remaining code was written by many people associated with the
- Info-ZIP group, with large contributions from (but not limited to):
- Greg Roelofs (overall program logic, ZipInfo, unshrink, filename
- mapping/portability, etc.), Mark Adler (inflate, explode, funzip),
- Kai Uwe Rommel (OS/2), John Bush and Paul Kienitz (Amiga), Antoine
- Verheijen (Macintosh), Hunter Goatley (more VMS), Mike White (Windows
- DLLs), Christian Spieler (overall logic, optimization, VMS, etc.) and
- others. See the file CONTRIBS in the source distribution for a much
- more complete list of contributors.
- The decompression core code for the deflate method (inflate.[ch],
- explode.c) was originally written by Mark Adler who submitted it
- as public domain code.
- --------------------------------------------------------------------------
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