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LICENSE
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GNU AFFERO GENERAL PUBLIC LICENSE
Version 3, 19 November 2007
Copyright (C)
2007 Blossom Labs
Everyone is permitted to copy and distribute verbatim copies of
this license document, but changing it is not allowed.
Preamble
The GNU Affero
General Public License is a free, copyleft license for software and other kinds
of works, specifically designed to ensure cooperation with the community in the
case of network server software.
The licenses for most software and other
practical works are designed to take away your freedom to share and change the
works. By contrast, our General Public Licenses are intended to guarantee your
freedom to share and change all versions of a program--to make sure it remains
free software for all its users.
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 them 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.
Developers that use our General Public
Licenses protect your rights with two steps: (1) assert copyright on the
software, and (2) offer you this License which gives you legal permission to
copy, distribute and/or modify the software.
A secondary benefit of defending
all users' freedom is that improvements made in alternate versions of the
program, if they receive widespread use, become available for other developers to
incorporate. Many developers of free software are heartened and encouraged by the
resulting cooperation. However, in the case of software used on network servers,
this result may fail to come about. The GNU General Public License permits making
a modified version and letting the public access it on a server without ever
releasing its source code to the public.
The GNU Affero General Public License
is designed specifically to ensure that, in such cases, the modified source code
becomes available to the community. It requires the operator of a network server
to provide the source code of the modified version running there to the users of
that server. Therefore, public use of a modified version, on a publicly
accessible server, gives the public access to the source code of the modified
version.
An older license, called the Affero General Public License and
published by Affero, was designed to accomplish similar goals. This is a
different license, not a version of the Affero GPL, but Affero has released a new
version of the Affero GPL which permits relicensing under this license.
The
precise terms and conditions for copying, distribution and modification
follow.
TERMS AND CONDITIONS
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covered work from you, a discriminatory patent license (a) in connection with
copies of the covered work conveyed by you (or copies made from those copies), or
(b) primarily for and in connection with specific products or compilations that
contain the covered work, unless you entered into that arrangement, or that
patent license was granted, prior to 28 March 2007.
Nothing in this License
shall be construed as excluding or limiting any implied license or other defenses
to infringement that may otherwise be available to you under applicable patent
law.
12. No Surrender of Others' Freedom.
If 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 convey a covered work so as to satisfy simultaneously your
obligations under this License and any other pertinent obligations, then as a
consequence you may
not convey it at all. For example, if you agree to terms
that obligate you to collect a royalty for further conveying from those to whom
you convey the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.
13. Remote
Network Interaction; Use with the GNU General Public License.
Notwithstanding
any other provision of this License, if you modify the Program, your modified
version must prominently offer all users interacting with it remotely through a
computer network (if your version supports such interaction) an opportunity to
receive the Corresponding Source of your version by providing access to the
Corresponding Source from a network server at no charge, through some standard or
customary means of facilitating copying of software. This Corresponding Source
shall include the Corresponding Source for any work covered by version 3 of the
GNU General Public License that is incorporated pursuant to the following
paragraph.
Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed under version
3 of the GNU General Public License into a single combined work, and to convey
the resulting work. The terms of this License will continue to apply to the part
which is the covered work, but the work with which it is combined will remain
governed by version 3 of the GNU General Public License.
14. Revised Versions
of this License.
The Free Software Foundation may publish revised and/or new
versions of the GNU Affero 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 that a certain numbered
version of the GNU Affero General Public License "or any later version" applies
to it, you have the option of following the terms and conditions either of that
numbered version or of any later version published by the Free Software
Foundation. If the Program does not specify a version number of the GNU Affero
General Public License, you may choose any version ever published by the Free
Software Foundation.
If the Program specifies that a proxy can decide which
future versions of the GNU Affero General Public License can be used, that
proxy's public statement of acceptance of a version permanently authorizes you to
choose that version for the Program.
Later license versions may give you
additional or different permissions. However, no additional obligations are
imposed on any author or copyright holder as a result of your choosing to follow
a later version.
15. Disclaimer of Warranty.
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.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING WILL ANY
COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 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.
17. Interpretation of
Sections 15 and 16.
If the disclaimer of warranty and limitation of liability
provided above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates an absolute
waiver of all civil liability in connection with the Program, unless a warranty
or assumption of liability accompanies a copy of the Program in return for a fee.
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 state 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 a brief idea of what
it does.>
Copyright (C) 2021 <name of author>
This program is free software:
you can redistribute it and/or modify it under the terms of the GNU Affero
General Public License as published by the Free Software Foundation, either
version 3 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 Affero General Public License for more details.
You should have
received a copy of the GNU Affero General Public License along with this program.
If not, see <https://www.gnu.org/licenses/>.
Also add information on how to
contact you by electronic and paper mail.
If your software can interact with
users remotely through a computer network, you should also make sure that it
provides a way for users to get its source. For example, if your program is a web
application, its interface could display a "Source" link that leads users to an
archive of the code. There are many ways you could offer source, and different
solutions will be better for different programs; see section 13 for the specific
requirements.
You should also get your employer (if you work as a programmer) or
school, if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU AGPL, see
<https://www.gnu.org/licenses/>.