361 lines
No EOL
18 KiB
Markdown
361 lines
No EOL
18 KiB
Markdown
### GNU GENERAL PUBLIC LICENSE
|
|
|
|
Version 2, June 1991
|
|
|
|
Copyright (C) 1989, 1991 Free Software Foundation, Inc.
|
|
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
|
|
|
|
Everyone is permitted to copy and distribute verbatim copies
|
|
of this license document, but changing it is not allowed.
|
|
|
|
### Preamble
|
|
|
|
The licenses for most software are designed to take away your freedom
|
|
to share and change it. By contrast, the GNU General Public License is
|
|
intended to guarantee your freedom to share and change free
|
|
software--to make sure the software is free for all its users. This
|
|
General Public License applies to most of the Free Software
|
|
Foundation's software and to any other program whose authors commit to
|
|
using it. (Some other Free Software Foundation software is covered by
|
|
the GNU Lesser General Public License instead.) You can apply it to
|
|
your programs, too.
|
|
|
|
When we speak of free software, we are referring to freedom, not
|
|
price. Our General Public Licenses are designed to make sure that you
|
|
have the freedom to distribute copies of free software (and charge for
|
|
this service if you wish), that you receive source code or can get it
|
|
if you want it, that you can change the software or use pieces of it
|
|
in new free programs; and that you know you can do these things.
|
|
|
|
To protect your rights, we need to make restrictions that forbid
|
|
anyone to deny you these rights or to ask you to surrender the rights.
|
|
These restrictions translate to certain responsibilities for you if
|
|
you distribute copies of the software, or if you modify it.
|
|
|
|
For example, if you distribute copies of such a program, whether
|
|
gratis or for a fee, 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 show them these terms so they know their
|
|
rights.
|
|
|
|
We protect your rights with two steps: (1) copyright the software, and
|
|
(2) offer you this license which gives you legal permission to copy,
|
|
distribute and/or modify the software.
|
|
|
|
Also, for each author's protection and ours, we want to make certain
|
|
that everyone understands that there is no warranty for this free
|
|
software. If the software is modified by someone else and passed on,
|
|
we want its recipients to know that what they have is not the
|
|
original, so that any problems introduced by others will not reflect
|
|
on the original authors' reputations.
|
|
|
|
Finally, any free program is threatened constantly by software
|
|
patents. We wish to avoid the danger that redistributors of a free
|
|
program will individually obtain patent licenses, in effect making the
|
|
program proprietary. To prevent this, we have made it clear that any
|
|
patent must be licensed for everyone's free use or not licensed at
|
|
all.
|
|
|
|
The precise terms and conditions for copying, distribution and
|
|
modification follow.
|
|
|
|
### TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
|
|
|
|
**0.** This License applies to any program or other work which
|
|
contains a notice placed by the copyright holder saying it may be
|
|
distributed under the terms of this General Public License. The
|
|
"Program", below, refers to any such program or work, and a "work
|
|
based on the Program" means either the Program or any derivative work
|
|
under copyright law: that is to say, a work containing the Program or
|
|
a portion of it, either verbatim or with modifications and/or
|
|
translated into another language. (Hereinafter, translation is
|
|
included without limitation in the term "modification".) Each licensee
|
|
is addressed as "you".
|
|
|
|
Activities other than copying, distribution and modification are not
|
|
covered by this License; they are outside its scope. The act of
|
|
running the Program is not restricted, and the output from the Program
|
|
is covered only if its contents constitute a work based on the Program
|
|
(independent of having been made by running the Program). Whether that
|
|
is true depends on what the Program does.
|
|
|
|
**1.** You may copy and distribute verbatim copies of the Program's
|
|
source code as you receive it, in any medium, provided that you
|
|
conspicuously and appropriately publish on each copy an appropriate
|
|
copyright notice and disclaimer of warranty; keep intact all the
|
|
notices that refer to this License and to the absence of any warranty;
|
|
and give any other recipients of the Program a copy of this License
|
|
along with the Program.
|
|
|
|
You may charge a fee for the physical act of transferring a copy, and
|
|
you may at your option offer warranty protection in exchange for a
|
|
fee.
|
|
|
|
**2.** You may modify your copy or copies of the Program or any
|
|
portion of it, thus forming a work based on the Program, and copy and
|
|
distribute such modifications or work under the terms of Section 1
|
|
above, provided that you also meet all of these conditions:
|
|
|
|
|
|
**a)** You must cause the modified files to carry prominent notices
|
|
stating that you changed the files and the date of any change.
|
|
|
|
|
|
**b)** You must cause any work that you distribute or publish, that in
|
|
whole or in part contains or is derived from the Program or any part
|
|
thereof, to be licensed as a whole at no charge to all third parties
|
|
under the terms of this License.
|
|
|
|
|
|
**c)** If the modified program normally reads commands interactively
|
|
when run, you must cause it, when started running for such interactive
|
|
use in the most ordinary way, to print or display an announcement
|
|
including an appropriate copyright notice and a notice that there is
|
|
no warranty (or else, saying that you provide a warranty) and that
|
|
users may redistribute the program under these conditions, and telling
|
|
the user how to view a copy of this License. (Exception: if the
|
|
Program itself is interactive but does not normally print such an
|
|
announcement, your work based on the Program is not required to print
|
|
an announcement.)
|
|
|
|
These requirements apply to the modified work as a whole. If
|
|
identifiable sections of that work are not derived from the Program,
|
|
and can be reasonably considered independent and separate works in
|
|
themselves, then this License, and its terms, do not apply to those
|
|
sections when you distribute them as separate works. But when you
|
|
distribute the same sections as part of a whole which is a work based
|
|
on the Program, the distribution of the whole must be on the terms of
|
|
this License, whose permissions for other licensees extend to the
|
|
entire whole, and thus to each and every part regardless of who wrote
|
|
it.
|
|
|
|
Thus, it is not the intent of this section to claim rights or contest
|
|
your rights to work written entirely by you; rather, the intent is to
|
|
exercise the right to control the distribution of derivative or
|
|
collective works based on the Program.
|
|
|
|
In addition, mere aggregation of another work not based on the Program
|
|
with the Program (or with a work based on the Program) on a volume of
|
|
a storage or distribution medium does not bring the other work under
|
|
the scope of this License.
|
|
|
|
**3.** You may copy and distribute the Program (or a work based on it,
|
|
under Section 2) in object code or executable form under the terms of
|
|
Sections 1 and 2 above provided that you also do one of the following:
|
|
|
|
|
|
**a)** Accompany it with the complete corresponding machine-readable
|
|
source code, which must be distributed under the terms of Sections 1
|
|
and 2 above on a medium customarily used for software interchange; or,
|
|
|
|
|
|
**b)** Accompany it with a written offer, valid for at least three
|
|
years, to give any third party, for a charge no more than your cost of
|
|
physically performing source distribution, a complete machine-readable
|
|
copy of the corresponding source code, to be distributed under the
|
|
terms of Sections 1 and 2 above on a medium customarily used for
|
|
software interchange; or,
|
|
|
|
|
|
**c)** Accompany it with the information you received as to the offer
|
|
to distribute corresponding source code. (This alternative is allowed
|
|
only for noncommercial distribution and only if you received the
|
|
program in object code or executable form with such an offer, in
|
|
accord with Subsection b above.)
|
|
|
|
The source code for a work means the preferred form of the work for
|
|
making modifications to it. For an executable work, complete source
|
|
code means all the source code for all modules it contains, plus any
|
|
associated interface definition files, plus the scripts used to
|
|
control compilation and installation of the executable. However, as a
|
|
special exception, the source code distributed need not include
|
|
anything that is normally distributed (in either source or binary
|
|
form) with the major components (compiler, kernel, and so on) of the
|
|
operating system on which the executable runs, unless that component
|
|
itself accompanies the executable.
|
|
|
|
If distribution of executable or object code is made by offering
|
|
access to copy from a designated place, then offering equivalent
|
|
access to copy the source code from the same place counts as
|
|
distribution of the source code, even though third parties are not
|
|
compelled to copy the source along with the object code.
|
|
|
|
**4.** You may not copy, modify, sublicense, or distribute the Program
|
|
except as expressly provided under this License. Any attempt otherwise
|
|
to copy, modify, sublicense or distribute the Program is void, and
|
|
will automatically terminate your rights under this License. However,
|
|
parties who have received copies, or rights, from you under this
|
|
License will not have their licenses terminated so long as such
|
|
parties remain in full compliance.
|
|
|
|
**5.** You are not required to accept this License, since you have not
|
|
signed it. However, nothing else grants you permission to modify or
|
|
distribute the Program or its derivative works. These actions are
|
|
prohibited by law if you do not accept this License. Therefore, by
|
|
modifying or distributing the Program (or any work based on the
|
|
Program), you indicate your acceptance of this License to do so, and
|
|
all its terms and conditions for copying, distributing or modifying
|
|
the Program or works based on it.
|
|
|
|
**6.** Each time you redistribute the Program (or any work based on
|
|
the Program), the recipient automatically receives a license from the
|
|
original licensor to copy, distribute or modify the Program subject to
|
|
these terms and conditions. You may not impose any further
|
|
restrictions on the recipients' exercise of the rights granted herein.
|
|
You are not responsible for enforcing compliance by third parties to
|
|
this License.
|
|
|
|
**7.** If, as a consequence of a court judgment or allegation of
|
|
patent infringement or for any other reason (not limited to patent
|
|
issues), conditions are imposed on you (whether by court order,
|
|
agreement or otherwise) that contradict the conditions of this
|
|
License, they do not excuse you from the conditions of this License.
|
|
If you cannot distribute so as to satisfy simultaneously your
|
|
obligations under this License and any other pertinent obligations,
|
|
then as a consequence you may not distribute the Program at all. For
|
|
example, if a patent license would not permit royalty-free
|
|
redistribution of the Program by all those who receive copies directly
|
|
or indirectly through you, then the only way you could satisfy both it
|
|
and this License would be to refrain entirely from distribution of the
|
|
Program.
|
|
|
|
If any portion of this section is held invalid or unenforceable under
|
|
any particular circumstance, the balance of the section is intended to
|
|
apply and the section as a whole is intended to apply in other
|
|
circumstances.
|
|
|
|
It is not the purpose of this section to induce you to infringe any
|
|
patents or other property right claims or to contest validity of any
|
|
such claims; this section has the sole purpose of protecting the
|
|
integrity of the free software distribution system, which is
|
|
implemented by public license practices. Many people have made
|
|
generous contributions to the wide range of software distributed
|
|
through that system in reliance on consistent application of that
|
|
system; it is up to the author/donor to decide if he or she is willing
|
|
to distribute software through any other system and a licensee cannot
|
|
impose that choice.
|
|
|
|
This section is intended to make thoroughly clear what is believed to
|
|
be a consequence of the rest of this License.
|
|
|
|
**8.** If the distribution and/or use of the Program is restricted in
|
|
certain countries either by patents or by copyrighted interfaces, the
|
|
original copyright holder who places the Program under this License
|
|
may add an explicit geographical distribution limitation excluding
|
|
those countries, so that distribution is permitted only in or among
|
|
countries not thus excluded. In such case, this License incorporates
|
|
the limitation as if written in the body of this License.
|
|
|
|
**9.** The Free Software Foundation may publish revised and/or new
|
|
versions of the General Public License from time to time. Such new
|
|
versions will be similar in spirit to the present version, but may
|
|
differ in detail to address new problems or concerns.
|
|
|
|
Each version is given a distinguishing version number. If the Program
|
|
specifies a version number of this License which applies to it and
|
|
"any later version", you have the option of following the terms and
|
|
conditions either of that version or of any later version published by
|
|
the Free Software Foundation. If the Program does not specify a
|
|
version number of this License, you may choose any version ever
|
|
published by the Free Software Foundation.
|
|
|
|
**10.** If you wish to incorporate parts of the Program into other
|
|
free programs whose distribution conditions are different, write to
|
|
the author to ask for permission. For software which is copyrighted by
|
|
the Free Software Foundation, write to the Free Software Foundation;
|
|
we sometimes make exceptions for this. Our decision will be guided by
|
|
the two goals of preserving the free status of all derivatives of our
|
|
free software and of promoting the sharing and reuse of software
|
|
generally.
|
|
|
|
**NO WARRANTY**
|
|
|
|
**11.** BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO
|
|
WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
|
|
EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
|
|
OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY
|
|
KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
|
|
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
|
|
PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME
|
|
THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
|
|
|
|
**12.** IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
|
|
WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
|
|
AND/OR REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU
|
|
FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
|
|
CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
|
|
PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
|
|
RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
|
|
FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF
|
|
SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
|
|
DAMAGES.
|
|
|
|
### END OF TERMS AND CONDITIONS
|
|
|
|
### How to Apply These Terms to Your New Programs
|
|
|
|
If you develop a new program, and you want it to be of the greatest
|
|
possible use to the public, the best way to achieve this is to make it
|
|
free software which everyone can redistribute and change under these
|
|
terms.
|
|
|
|
To do so, attach the following notices to the program. It is safest to
|
|
attach them to the start of each source file to most effectively
|
|
convey the exclusion of warranty; and each file should have at least
|
|
the "copyright" line and a pointer to where the full notice is found.
|
|
|
|
one line to give the program's name and an idea of what it does.
|
|
Copyright (C) yyyy name of author
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License
|
|
as published by the Free Software Foundation; either version 2
|
|
of the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
|
|
Also add information on how to contact you by electronic and paper
|
|
mail.
|
|
|
|
If the program is interactive, make it output a short notice like this
|
|
when it starts in an interactive mode:
|
|
|
|
Gnomovision version 69, Copyright (C) year name of author
|
|
Gnomovision comes with ABSOLUTELY NO WARRANTY; for details
|
|
type `show w'. This is free software, and you are welcome
|
|
to redistribute it under certain conditions; type `show c'
|
|
for details.
|
|
|
|
The hypothetical commands \`show w' and \`show c' should show the
|
|
appropriate parts of the General Public License. Of course, the
|
|
commands you use may be called something other than \`show w' and
|
|
\`show c'; they could even be mouse-clicks or menu items--whatever
|
|
suits your program.
|
|
|
|
You should also get your employer (if you work as a programmer) or
|
|
your school, if any, to sign a "copyright disclaimer" for the program,
|
|
if necessary. Here is a sample; alter the names:
|
|
|
|
Yoyodyne, Inc., hereby disclaims all copyright
|
|
interest in the program `Gnomovision'
|
|
(which makes passes at compilers) written
|
|
by James Hacker.
|
|
|
|
signature of Ty Coon, 1 April 1989
|
|
Ty Coon, President of Vice
|
|
|
|
This General Public License does not permit incorporating your program
|
|
into proprietary programs. If your program is a subroutine library,
|
|
you may consider it more useful to permit linking proprietary
|
|
applications with the library. If this is what you want to do, use the
|
|
[GNU Lesser General Public
|
|
License](http://www.gnu.org/licenses/lgpl.html) instead of this
|
|
License. |