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Mattermost Licensing
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SOFTWARE LICENSING
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You are licensed to use compiled versions of the Mattermost platform produced by Mattermost, Inc. under an MIT LICENSE
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- See MIT-COMPILED-LICENSE.md included in compiled versions for details
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You may be licensed to use source code to create compiled versions not produced by Mattermost, Inc. in one of two ways:
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1. Under the Free Software Foundation’s GNU AGPL v.3.0, subject to the exceptions outlined in this policy; or
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2. Under a commercial license available from Mattermost, Inc. by contacting commercial@mattermost.com
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You are licensed to use the source code in Admin Tools and Configuration Files (templates/, config/, model/,
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webapp/client, webapp/fonts, webapp/i18n, webapp/images and all subdirectories thereof) under the Apache License v2.0.
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We promise that we will not enforce the copyleft provisions in AGPL v3.0 against you if your application (a) does not
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link to the Mattermost Platform directly, but exclusively uses the Mattermost Admin Tools and Configuration Files, and
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(b) you have not modified, added to or adapted the source code of Mattermost in a way that results in the creation of
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a “modified version” or “work based on” Mattermost as these terms are defined in the AGPL v3.0 license.
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MATTERMOST TRADEMARK GUIDELINES
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Your use of the mark Mattermost is subject to Mattermost, Inc's prior written approval and our organization’s Trademark
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Standards of Use at http://www.mattermost.org/trademark-standards-of-use/. For trademark approval or any questions
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you have about using these trademarks, please email trademark@mattermost.com
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------------------------------------------------------------------------------------------------------------------------------
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Apache License
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Version 2.0, January 2004
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http://www.apache.org/licenses/
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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1. Definitions.
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"License" shall mean the terms and conditions for use, reproduction,
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END OF TERMS AND CONDITIONS
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APPENDIX: How to apply the Apache License to your work.
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To apply the Apache License to your work, attach the following
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Copyright [yyyy] [name of copyright owner]
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You may obtain a copy of the License at
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Unless required by applicable law or agreed to in writing, software
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See the License for the specific language governing permissions and
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------------------------------------------------------------------------------
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The software is released under the terms of the GNU Affero General Public
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License, version 3.
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GNU AFFERO GENERAL PUBLIC LICENSE
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Version 3, 19 November 2007
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Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
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Everyone is permitted to copy and distribute verbatim copies
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Preamble
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The GNU Affero General Public License is a free, copyleft license for
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software and other kinds of works, specifically designed to ensure
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The licenses for most software and other practical works are designed
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The precise terms and conditions for copying, distribution and
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TERMS AND CONDITIONS
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0. Definitions.
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"This License" refers to version 3 of the GNU Affero General Public License.
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"Copyright" also means copyright-like laws that apply to other kinds of
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The Corresponding Source for a work in source code form is that
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|
||
A compilation of a covered work with other separate and independent
|
||
works, which are not by their nature extensions of the covered work,
|
||
and which are not combined with it such as to form a larger program,
|
||
in or on a volume of a storage or distribution medium, is called an
|
||
"aggregate" if the compilation and its resulting copyright are not
|
||
used to limit the access or legal rights of the compilation's users
|
||
beyond what the individual works permit. Inclusion of a covered work
|
||
in an aggregate does not cause this License to apply to the other
|
||
parts of the aggregate.
|
||
|
||
6. Conveying Non-Source Forms.
|
||
|
||
You may convey a covered work in object code form under the terms
|
||
of sections 4 and 5, provided that you also convey the
|
||
machine-readable Corresponding Source under the terms of this License,
|
||
in one of these ways:
|
||
|
||
a) Convey the object code in, or embodied in, a physical product
|
||
(including a physical distribution medium), accompanied by the
|
||
Corresponding Source fixed on a durable physical medium
|
||
customarily used for software interchange.
|
||
|
||
b) Convey the object code in, or embodied in, a physical product
|
||
(including a physical distribution medium), accompanied by a
|
||
written offer, valid for at least three years and valid for as
|
||
long as you offer spare parts or customer support for that product
|
||
model, to give anyone who possesses the object code either (1) a
|
||
copy of the Corresponding Source for all the software in the
|
||
product that is covered by this License, on a durable physical
|
||
medium customarily used for software interchange, for a price no
|
||
more than your reasonable cost of physically performing this
|
||
conveying of source, or (2) access to copy the
|
||
Corresponding Source from a network server at no charge.
|
||
|
||
c) Convey individual copies of the object code with a copy of the
|
||
written offer to provide the Corresponding Source. This
|
||
alternative is allowed only occasionally and noncommercially, and
|
||
only if you received the object code with such an offer, in accord
|
||
with subsection 6b.
|
||
|
||
d) Convey the object code by offering access from a designated
|
||
place (gratis or for a charge), and offer equivalent access to the
|
||
Corresponding Source in the same way through the same place at no
|
||
further charge. You need not require recipients to copy the
|
||
Corresponding Source along with the object code. If the place to
|
||
copy the object code is a network server, the Corresponding Source
|
||
may be on a different server (operated by you or a third party)
|
||
that supports equivalent copying facilities, provided you maintain
|
||
clear directions next to the object code saying where to find the
|
||
Corresponding Source. Regardless of what server hosts the
|
||
Corresponding Source, you remain obligated to ensure that it is
|
||
available for as long as needed to satisfy these requirements.
|
||
|
||
e) Convey the object code using peer-to-peer transmission, provided
|
||
you inform other peers where the object code and Corresponding
|
||
Source of the work are being offered to the general public at no
|
||
charge under subsection 6d.
|
||
|
||
A separable portion of the object code, whose source code is excluded
|
||
from the Corresponding Source as a System Library, need not be
|
||
included in conveying the object code work.
|
||
|
||
A "User Product" is either (1) a "consumer product", which means any
|
||
tangible personal property which is normally used for personal, family,
|
||
or household purposes, or (2) anything designed or sold for incorporation
|
||
into a dwelling. In determining whether a product is a consumer product,
|
||
doubtful cases shall be resolved in favor of coverage. For a particular
|
||
product received by a particular user, "normally used" refers to a
|
||
typical or common use of that class of product, regardless of the status
|
||
of the particular user or of the way in which the particular user
|
||
actually uses, or expects or is expected to use, the product. A product
|
||
is a consumer product regardless of whether the product has substantial
|
||
commercial, industrial or non-consumer uses, unless such uses represent
|
||
the only significant mode of use of the product.
|
||
|
||
"Installation Information" for a User Product means any methods,
|
||
procedures, authorization keys, or other information required to install
|
||
and execute modified versions of a covered work in that User Product from
|
||
a modified version of its Corresponding Source. The information must
|
||
suffice to ensure that the continued functioning of the modified object
|
||
code is in no case prevented or interfered with solely because
|
||
modification has been made.
|
||
|
||
If you convey an object code work under this section in, or with, or
|
||
specifically for use in, a User Product, and the conveying occurs as
|
||
part of a transaction in which the right of possession and use of the
|
||
User Product is transferred to the recipient in perpetuity or for a
|
||
fixed term (regardless of how the transaction is characterized), the
|
||
Corresponding Source conveyed under this section must be accompanied
|
||
by the Installation Information. But this requirement does not apply
|
||
if neither you nor any third party retains the ability to install
|
||
modified object code on the User Product (for example, the work has
|
||
been installed in ROM).
|
||
|
||
The requirement to provide Installation Information does not include a
|
||
requirement to continue to provide support service, warranty, or updates
|
||
for a work that has been modified or installed by the recipient, or for
|
||
the User Product in which it has been modified or installed. Access to a
|
||
network may be denied when the modification itself materially and
|
||
adversely affects the operation of the network or violates the rules and
|
||
protocols for communication across the network.
|
||
|
||
Corresponding Source conveyed, and Installation Information provided,
|
||
in accord with this section must be in a format that is publicly
|
||
documented (and with an implementation available to the public in
|
||
source code form), and must require no special password or key for
|
||
unpacking, reading or copying.
|
||
|
||
7. Additional Terms.
|
||
|
||
"Additional permissions" are terms that supplement the terms of this
|
||
License by making exceptions from one or more of its conditions.
|
||
Additional permissions that are applicable to the entire Program shall
|
||
be treated as though they were included in this License, to the extent
|
||
that they are valid under applicable law. If additional permissions
|
||
apply only to part of the Program, that part may be used separately
|
||
under those permissions, but the entire Program remains governed by
|
||
this License without regard to the additional permissions.
|
||
|
||
When you convey a copy of a covered work, you may at your option
|
||
remove any additional permissions from that copy, or from any part of
|
||
it. (Additional permissions may be written to require their own
|
||
removal in certain cases when you modify the work.) You may place
|
||
additional permissions on material, added by you to a covered work,
|
||
for which you have or can give appropriate copyright permission.
|
||
|
||
Notwithstanding any other provision of this License, for material you
|
||
add to a covered work, you may (if authorized by the copyright holders of
|
||
that material) supplement the terms of this License with terms:
|
||
|
||
a) Disclaiming warranty or limiting liability differently from the
|
||
terms of sections 15 and 16 of this License; or
|
||
|
||
b) Requiring preservation of specified reasonable legal notices or
|
||
author attributions in that material or in the Appropriate Legal
|
||
Notices displayed by works containing it; or
|
||
|
||
c) Prohibiting misrepresentation of the origin of that material, or
|
||
requiring that modified versions of such material be marked in
|
||
reasonable ways as different from the original version; or
|
||
|
||
d) Limiting the use for publicity purposes of names of licensors or
|
||
authors of the material; or
|
||
|
||
e) Declining to grant rights under trademark law for use of some
|
||
trade names, trademarks, or service marks; or
|
||
|
||
f) Requiring indemnification of licensors and authors of that
|
||
material by anyone who conveys the material (or modified versions of
|
||
it) with contractual assumptions of liability to the recipient, for
|
||
any liability that these contractual assumptions directly impose on
|
||
those licensors and authors.
|
||
|
||
All other non-permissive additional terms are considered "further
|
||
restrictions" within the meaning of section 10. If the Program as you
|
||
received it, or any part of it, contains a notice stating that it is
|
||
governed by this License along with a term that is a further
|
||
restriction, you may remove that term. If a license document contains
|
||
a further restriction but permits relicensing or conveying under this
|
||
License, you may add to a covered work material governed by the terms
|
||
of that license document, provided that the further restriction does
|
||
not survive such relicensing or conveying.
|
||
|
||
If you add terms to a covered work in accord with this section, you
|
||
must place, in the relevant source files, a statement of the
|
||
additional terms that apply to those files, or a notice indicating
|
||
where to find the applicable terms.
|
||
|
||
Additional terms, permissive or non-permissive, may be stated in the
|
||
form of a separately written license, or stated as exceptions;
|
||
the above requirements apply either way.
|
||
|
||
8. Termination.
|
||
|
||
You may not propagate or modify a covered work except as expressly
|
||
provided under this License. Any attempt otherwise to propagate or
|
||
modify it is void, and will automatically terminate your rights under
|
||
this License (including any patent licenses granted under the third
|
||
paragraph of section 11).
|
||
|
||
However, if you cease all violation of this License, then your
|
||
license from a particular copyright holder is reinstated (a)
|
||
provisionally, unless and until the copyright holder explicitly and
|
||
finally terminates your license, and (b) permanently, if the copyright
|
||
holder fails to notify you of the violation by some reasonable means
|
||
prior to 60 days after the cessation.
|
||
|
||
Moreover, your license from a particular copyright holder is
|
||
reinstated permanently if the copyright holder notifies you of the
|
||
violation by some reasonable means, this is the first time you have
|
||
received notice of violation of this License (for any work) from that
|
||
copyright holder, and you cure the violation prior to 30 days after
|
||
your receipt of the notice.
|
||
|
||
Termination of your rights under this section does not terminate the
|
||
licenses of parties who have received copies or rights from you under
|
||
this License. If your rights have been terminated and not permanently
|
||
reinstated, you do not qualify to receive new licenses for the same
|
||
material under section 10.
|
||
|
||
9. Acceptance Not Required for Having Copies.
|
||
|
||
You are not required to accept this License in order to receive or
|
||
run a copy of the Program. Ancillary propagation of a covered work
|
||
occurring solely as a consequence of using peer-to-peer transmission
|
||
to receive a copy likewise does not require acceptance. However,
|
||
nothing other than this License grants you permission to propagate or
|
||
modify any covered work. These actions infringe copyright if you do
|
||
not accept this License. Therefore, by modifying or propagating a
|
||
covered work, you indicate your acceptance of this License to do so.
|
||
|
||
10. Automatic Licensing of Downstream Recipients.
|
||
|
||
Each time you convey a covered work, the recipient automatically
|
||
receives a license from the original licensors, to run, modify and
|
||
propagate that work, subject to this License. You are not responsible
|
||
for enforcing compliance by third parties with this License.
|
||
|
||
An "entity transaction" is a transaction transferring control of an
|
||
organization, or substantially all assets of one, or subdividing an
|
||
organization, or merging organizations. If propagation of a covered
|
||
work results from an entity transaction, each party to that
|
||
transaction who receives a copy of the work also receives whatever
|
||
licenses to the work the party's predecessor in interest had or could
|
||
give under the previous paragraph, plus a right to possession of the
|
||
Corresponding Source of the work from the predecessor in interest, if
|
||
the predecessor has it or can get it with reasonable efforts.
|
||
|
||
You may not impose any further restrictions on the exercise of the
|
||
rights granted or affirmed under this License. For example, you may
|
||
not impose a license fee, royalty, or other charge for exercise of
|
||
rights granted under this License, and you may not initiate litigation
|
||
(including a cross-claim or counterclaim in a lawsuit) alleging that
|
||
any patent claim is infringed by making, using, selling, offering for
|
||
sale, or importing the Program or any portion of it.
|
||
|
||
11. Patents.
|
||
|
||
A "contributor" is a copyright holder who authorizes use under this
|
||
License of the Program or a work on which the Program is based. The
|
||
work thus licensed is called the contributor's "contributor version".
|
||
|
||
A contributor's "essential patent claims" are all patent claims
|
||
owned or controlled by the contributor, whether already acquired or
|
||
hereafter acquired, that would be infringed by some manner, permitted
|
||
by this License, of making, using, or selling its contributor version,
|
||
but do not include claims that would be infringed only as a
|
||
consequence of further modification of the contributor version. For
|
||
purposes of this definition, "control" includes the right to grant
|
||
patent sublicenses in a manner consistent with the requirements of
|
||
this License.
|
||
|
||
Each contributor grants you a non-exclusive, worldwide, royalty-free
|
||
patent license under the contributor's essential patent claims, to
|
||
make, use, sell, offer for sale, import and otherwise run, modify and
|
||
propagate the contents of its contributor version.
|
||
|
||
In the following three paragraphs, a "patent license" is any express
|
||
agreement or commitment, however denominated, not to enforce a patent
|
||
(such as an express permission to practice a patent or covenant not to
|
||
sue for patent infringement). To "grant" such a patent license to a
|
||
party means to make such an agreement or commitment not to enforce a
|
||
patent against the party.
|
||
|
||
If you convey a covered work, knowingly relying on a patent license,
|
||
and the Corresponding Source of the work is not available for anyone
|
||
to copy, free of charge and under the terms of this License, through a
|
||
publicly available network server or other readily accessible means,
|
||
then you must either (1) cause the Corresponding Source to be so
|
||
available, or (2) arrange to deprive yourself of the benefit of the
|
||
patent license for this particular work, or (3) arrange, in a manner
|
||
consistent with the requirements of this License, to extend the patent
|
||
license to downstream recipients. "Knowingly relying" means you have
|
||
actual knowledge that, but for the patent license, your conveying the
|
||
covered work in a country, or your recipient's use of the covered work
|
||
in a country, would infringe one or more identifiable patents in that
|
||
country that you have reason to believe are valid.
|
||
|
||
If, pursuant to or in connection with a single transaction or
|
||
arrangement, you convey, or propagate by procuring conveyance of, a
|
||
covered work, and grant a patent license to some of the parties
|
||
receiving the covered work authorizing them to use, propagate, modify
|
||
or convey a specific copy of the covered work, then the patent license
|
||
you grant is automatically extended to all recipients of the covered
|
||
work and works based on it.
|
||
|
||
A patent license is "discriminatory" if it does not include within
|
||
the scope of its coverage, prohibits the exercise of, or is
|
||
conditioned on the non-exercise of one or more of the rights that are
|
||
specifically granted under this License. You may not convey a covered
|
||
work if you are a party to an arrangement with a third party that is
|
||
in the business of distributing software, under which you make payment
|
||
to the third party based on the extent of your activity of conveying
|
||
the work, and under which the third party grants, to any of the
|
||
parties who would receive the 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) <year> <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 <http://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
|
||
<http://www.gnu.org/licenses/>.
|