Re: sponsor(s) needed for emelfm, upx, libucl
Peter Makholm wrote on Tue Apr 11, 2000 um 02:11:32PM:
> Eduard Bloch <email@example.com> writes:
> > - UPX, a file-compressor for executables which are unpacked on-the-fly
> > while execution (GPL, apparently non-free because of a special paragraph
> > in the license).
> Could you please send this paragraph.
Sure. UPX creates new binaries, including an executable header (which is
under GPL) and the compressed contents of the real executable. But there
are some limitations regarding the compression of non-GPL-programs with
an modified version of UPX. Our version is unmodified, still recompiled,
but who knows. I'm not a jurist, so I don't know exactly how to treat
this. So the user should better read the original license before using
this tool and for this reason I would place it in the non-free section.
SPECIAL EXCEPTION FOR COMPRESSED EXECUTABLES
The stub which is imbedded in each UPX compressed program is part
of UPX and UCL, and contains code that is under our copyright. The
terms of the GNU General Public License still apply as compressing
a program is a special form of linking with our stub.
Hereby Markus F.X.J. Oberhumer and Laszlo Molnar grant you special
permission to freely use and distribute all UPX compressed programs
(including commercial ones), subject to the following restrictions:
1. You must compress your program with a completely unmodified UPX
version; either with our precompiled version, or (at your option)
with a self compiled version of the unmodified UPX sources as
distributed by us.
2. This also implies that the UPX stub must be completely unmodfied, i.e.
the stub imbedded in your compressed program must be byte-identical
to the stub that is produced by the official unmodified UPX version.
3. The decompressor and any other code from the stub must exclusively get
used by the unmodified UPX stub for decompressing your program at
program startup. No portion of the stub may get read, copied,
called or otherwise get used or accessed by your program.
- You can use a modified UPX version or modified UPX stub only for
programs that are compatible with the GNU General Public License.
- We grant you special permission to freely use and distribute all UPX
compressed programs. But any modification of the UPX stub (such as,
but not limited to, removing our copyright string or making your
program non-decompressible) will immediately revoke your right to
use and distribute a UPX compressed program.
- UPX is not a software protection tool; by requiring that you use
the unmodified UPX version for your proprietary programs we
make sure that any user can decompress your program. This protects
both you and your users as nobody can hide malicious code -
any program that cannot be decompressed is highly suspicious
- You can integrate all or part of UPX and UCL into projects that
are compatible with the GNU GPL, but obviously you cannot grant
any special exceptions beyond the GPL for our code in your project.
- We want to actively support manufacturers of virus scanners and
similar security software. Please contact us if you would like to
incorporate parts of UPX or UCL into such a product.
Eduard Bloch <firstname.lastname@example.org>; HP: http://eduard.bloch.com/edecosi
0xEDF008C5(gpg): E6EB 98E2 B885 8FF0 6C04 5C1D E106 481E EDF0 08C5