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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
0. Definitions.
"This License"
refers to version 3 of the GNU Affero General Public
License.
"Copyright" also means copyright-like laws that apply to
other kinds of works, such as semiconductor masks.
"The Program"
refers to any copyrightable work licensed under this License. Each
licensee is addressed as "you". "Licensees" and "recipients" may be
individuals or organizations.
To "modify" a work means to copy from
or adapt all or part of the work in a fashion requiring copyright
permission, other than the making of an exact copy. The resulting work is
called a "modified version" of the earlier work or a work "based on" the
earlier work.
A "covered work" means either the unmodified Program
or a work based on the Program.
To "propagate" a work means to do
anything with it that, without permission, would make you directly or
secondarily liable for infringement under applicable copyright law, except
executing it on a computer or modifying a private copy. Propagation
includes copying, distribution (with or without modification), making
available to the public, and in some countries other activities as
well.
To "convey" a work means any kind of propagation that enables
other parties to make or receive copies. Mere interaction with a user
through a computer network, with no transfer of a copy, is not
conveying.
An interactive user interface displays "Appropriate
Legal Notices" to the extent that it includes a convenient and prominently
visible feature that (1) displays an appropriate copyright notice, and (2)
tells the user that there is no warranty for the work (except to the
extent that warranties are provided), that licensees may convey the work
under this License, and how to view a copy of this License. If the
interface presents a list of user commands or options, such as a menu, a
prominent item in the list meets this criterion.
1. Source
Code.
The "source code" for a work means the preferred form of the
work for making modifications to it. "Object code" means any non-source
form of a work.
A "Standard Interface" means an interface that
either is an official standard defined by a recognized standards body, or,
in the case of interfaces specified for a particular programming language,
one that is widely used among developers working in that
language.
The "System Libraries" of an executable work include
anything, other than the work as a whole, that (a) is included in the
normal form of packaging a Major Component, but which is not part of that
Major Component, and (b) serves only to enable use of the work with that
Major Component, or to implement a Standard Interface for which an
implementation is available to the public in source code form. A "Major
Component", in this context, means a major essential component (kernel,
window system, and so on) of the specific operating system (if any) on
which the executable work runs, or a compiler used to produce the work, or
an object code interpreter used to run it.
The "Corresponding
Source" for a work in object code form means all the source code needed to
generate, install, and (for an executable work) run the object code and to
modify the work, including scripts to control those activities. However,
it does not include the work's System Libraries, or general-purpose tools
or generally available free programs which are used unmodified in
performing those activities but which are not part of the work. For
example, Corresponding Source includes interface definition files
associated with source files for the work, and the source code for shared
libraries and dynamically linked subprograms that the work is specifically
designed to require, such as by intimate data communication or control
flow between those subprograms and other parts of the work.
The
Corresponding Source need not include anything that users can regenerate
automatically from other parts of the Corresponding Source.
The
Corresponding Source for a work in source code form is that same
work.
2. Basic Permissions.
All rights granted under this
License are granted for the term of copyright on the Program, and are
irrevocable provided the stated conditions are met. This License
explicitly affirms your unlimited permission to run the unmodified
Program. The output from running a covered work is covered by this License
only if the output, given its content, constitutes a covered work. This
License acknowledges your rights of fair use or other equivalent, as
provided by copyright law.
You may make, run and propagate covered
works that you do not convey, without conditions so long as your license
otherwise remains in force. You may convey covered works to others for the
sole purpose of having them make modifications exclusively for you, or
provide you with facilities for running those works, provided that you
comply with the terms of this License in conveying all material for which
you do not control copyright. Those thus making or running the covered
works for you must do so exclusively on your behalf, under your direction
and control, on terms that prohibit them from making any copies of your
copyrighted material outside their relationship with you.
Conveying
under any other circumstances is permitted solely under the conditions
stated below. Sublicensing is not allowed; section 10 makes it
unnecessary.
3. Protecting Users' Legal Rights From Anti-Circumvention
Law.
No covered work shall be deemed part of an effective
technological measure under any applicable law fulfilling obligations
under article 11 of the WIPO copyright treaty adopted on 20 December 1996,
or similar laws prohibiting or restricting circumvention of such
measures.
When you convey a covered work, you waive any legal power
to forbid circumvention of technological measures to the extent such
circumvention is effected by exercising rights under this License with
respect to the covered work, and you disclaim any intention to limit
operation or modification of the work as a means of enforcing, against the
work's users, your or third parties' legal rights to forbid circumvention
of technological measures.
4. Conveying Verbatim Copies.
You may
convey 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; keep intact all notices stating
that this License and any non-permissive terms added in accord with
section 7 apply to the code; keep intact all notices of the absence of any
warranty; and give all recipients a copy of this License along with the
Program.
You may charge any price or no price for each copy that
you convey, and you may offer support or warranty protection for a
fee.
5. Conveying Modified Source Versions.
You may convey a
work based on the Program, or the modifications to produce it from the
Program, in the form of source code under the terms of section 4, provided
that you also meet all of these conditions:
* a) The work must
carry prominent notices stating that you modified it, and giving a
relevant date.
* b) The work must carry prominent notices stating that
it is released under this License and any conditions added under section
7. This requirement modifies the requirement in section 4 to "keep intact
all notices".
* c) You must license the entire work, as a whole, under
this License to anyone who comes into possession of a copy. This License
will therefore apply, along with any applicable section 7 additional
terms, to the whole of the work, and all its parts, regardless of how they
are packaged. This License gives no permission to license the work in any
other way, but it does not invalidate such permission if you have
separately received it.
* d) If the work has interactive user
interfaces, each must display Appropriate Legal Notices; however, if the
Program has interactive interfaces that do not display Appropriate Legal
Notices, your work need not make them do so.
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 non-commercial, 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. |