96 lines
4.8 KiB
Plaintext
96 lines
4.8 KiB
Plaintext
NETHACK GENERAL PUBLIC LICENSE
|
|
(Copyright 1989 M. Stephenson)
|
|
|
|
(Based on the BISON general public license,
|
|
copyright 1988 Richard M. Stallman)
|
|
|
|
Everyone is permitted to copy and distribute verbatim copies of this
|
|
license, but changing it is not allowed. You can also use this wording to
|
|
make the terms for other programs.
|
|
|
|
The license agreements of most software companies keep you at the mercy of
|
|
those companies. By contrast, our general public license is intended to give
|
|
everyone the right to share NetHack. To make sure that you get the rights we
|
|
want you to have, we need to make restrictions that forbid anyone to deny you
|
|
these rights or to ask you to surrender the rights. Hence this license
|
|
agreement.
|
|
|
|
Specifically, we want to make sure that you have the right to give away
|
|
copies of NetHack, that you receive source code or else can get it if you
|
|
want it, that you can change NetHack or use pieces of it in new free
|
|
programs, and that you know you can do these things.
|
|
|
|
To make sure that everyone has such rights, we have to forbid you to
|
|
deprive anyone else of these rights. For example, if you distribute copies
|
|
of NetHack, you must give the recipients all the rights that you have. You
|
|
must make sure that they, too, receive or can get the source code. And you
|
|
must tell them their rights.
|
|
|
|
Also, for our own protection, we must make certain that everyone finds out
|
|
that there is no warranty for NetHack. If NetHack is modified by someone
|
|
else and passed on, we want its recipients to know that what they have is
|
|
not what we distributed.
|
|
|
|
Therefore we (Mike Stephenson and other holders of NetHack copyrights) make
|
|
the following terms which say what you must do to be allowed to distribute or
|
|
change NetHack.
|
|
|
|
|
|
COPYING POLICIES
|
|
|
|
1. You may copy and distribute verbatim copies of NetHack source code as
|
|
you receive it, in any medium, provided that you keep intact the notices on
|
|
all files that refer to copyrights, to this License Agreement, and to the
|
|
absence of any warranty; and give any other recipients of the NetHack
|
|
program a copy of this License Agreement along with the program.
|
|
|
|
2. You may modify your copy or copies of NetHack or any portion of it, and
|
|
copy and distribute such modifications under the terms of Paragraph 1 above
|
|
(including distributing this License Agreement), provided that you also do the
|
|
following:
|
|
|
|
a) cause the modified files to carry prominent notices stating that you
|
|
changed the files and the date of any change; and
|
|
|
|
b) cause the whole of any work that you distribute or publish, that in
|
|
whole or in part contains or is a derivative of NetHack or any part
|
|
thereof, to be licensed at no charge to all third parties on terms
|
|
identical to those contained in this License Agreement (except that you
|
|
may choose to grant more extensive warranty protection to some or all
|
|
third parties, at your option)
|
|
|
|
c) You may charge a distribution fee for the physical act of
|
|
transferring a copy, and you may at your option offer warranty protection
|
|
in exchange for a fee.
|
|
|
|
3. You may copy and distribute NetHack (or a portion or derivative of it,
|
|
under Paragraph 2) in object code or executable form under the terms of
|
|
Paragraphs 1 and 2 above provided that you also do one of the following:
|
|
|
|
a) accompany it with the complete machine-readable source code, which
|
|
must be distributed under the terms of Paragraphs 1 and 2 above; or,
|
|
|
|
b) accompany it with full information as to how to obtain the complete
|
|
machine-readable source code from an appropriate archive site. (This
|
|
alternative is allowed only for noncommercial distribution.)
|
|
|
|
For these purposes, complete source code means either the full source
|
|
distribution as originally released over Usenet or updated copies of the
|
|
files in this distribution used to create the object code or executable.
|
|
|
|
4. You may not copy, sublicense, distribute or transfer NetHack except as
|
|
expressly provided under this License Agreement. Any attempt otherwise to
|
|
copy, sublicense, distribute or transfer NetHack is void and your rights to
|
|
use the program under this License agreement shall be automatically
|
|
terminated. However, parties who have received computer software programs
|
|
from you with this License Agreement will not have their licenses terminated
|
|
so long as such parties remain in full compliance.
|
|
|
|
|
|
Stated plainly: You are permitted to modify NetHack, or otherwise use parts
|
|
of NetHack, provided that you comply with the conditions specified above;
|
|
in particular, your modified NetHack or program containing parts of NetHack
|
|
must remain freely available as provided in this License Agreement. In
|
|
other words, go ahead and share NetHack, but don't try to stop anyone else
|
|
from sharing it farther.
|