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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.
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Everyone is permitted to copy and distribute verbatim copies of this
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license document, but changing it is not allowed.
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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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cooperation with the community in the case of network server software.
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The licenses for most software and other practical works are designed
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to take away your freedom to share and change the works. By contrast,
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our General Public Licenses are intended to guarantee your freedom to
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share and change all versions of a program--to make sure it remains
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free software for all its users.
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When we speak of free software, we are referring to freedom, not
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price. Our General Public Licenses are designed to make sure that you
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have the freedom to distribute copies of free software (and charge for
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them if you wish), that you receive source code or can get it if you
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want it, that you can change the software or use pieces of it in new
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free programs, and that you know you can do these things.
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Developers that use our General Public Licenses protect your rights
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with two steps: (1) assert copyright on the software, and (2) offer
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you this License which gives you legal permission to copy, distribute
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and/or modify the software.
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A secondary benefit of defending all users' freedom is that
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improvements made in alternate versions of the program, if they
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receive widespread use, become available for other developers to
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incorporate. Many developers of free software are heartened and
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encouraged by the resulting cooperation. However, in the case of
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software used on network servers, this result may fail to come about.
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The GNU General Public License permits making a modified version and
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letting the public access it on a server without ever releasing its
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source code to the public.
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The GNU Affero General Public License is designed specifically to
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ensure that, in such cases, the modified source code becomes available
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to the community. It requires the operator of a network server to
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provide the source code of the modified version running there to the
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users of that server. Therefore, public use of a modified version, on
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a publicly accessible server, gives the public access to the source
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code of the modified version.
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An older license, called the Affero General Public License and
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published by Affero, was designed to accomplish similar goals. This is
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a different license, not a version of the Affero GPL, but Affero has
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released a new version of the Affero GPL which permits relicensing
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The precise terms and conditions for copying, distribution and
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modification follow.
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## TERMS AND CONDITIONS
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"This License" refers to version 3 of the GNU Affero General Public
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"Copyright" also means copyright-like laws that apply to other kinds
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of works, such as semiconductor masks.
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"The Program" refers to any copyrightable work licensed under this
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License. Each licensee is addressed as "you". "Licensees" and
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"recipients" may be individuals or organizations.
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To "modify" a work means to copy from or adapt all or part of the work
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in a fashion requiring copyright permission, other than the making of
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an exact copy. The resulting work is called a "modified version" of
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the earlier work or a work "based on" the earlier work.
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A "covered work" means either the unmodified Program or a work based
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To "propagate" a work means to do anything with it that, without
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permission, would make you directly or secondarily liable for
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infringement under applicable copyright law, except executing it on a
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computer or modifying a private copy. Propagation includes copying,
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distribution (with or without modification), making available to the
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public, and in some countries other activities as well.
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To "convey" a work means any kind of propagation that enables other
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An interactive user interface displays "Appropriate Legal Notices" to
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menu, a prominent item in the list meets this criterion.
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### 1. Source Code.
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The "source code" for a work means the preferred form of the work for
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making modifications to it. "Object code" means any non-source form of
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interfaces specified for a particular programming language, one that
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The "System Libraries" of an executable work include anything, other
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The "Corresponding Source" for a work in object code form means all
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System Libraries, or general-purpose tools or generally available free
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programs which are used unmodified in performing those activities but
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includes interface definition files associated with source files for
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the work, and the source code for shared libraries and dynamically
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linked subprograms that the work is specifically designed to require,
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such as by intimate data communication or control flow between those
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subprograms and other parts of the work.
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The Corresponding Source need not include anything that users can
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regenerate automatically from other parts of the Corresponding Source.
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The Corresponding Source for a work in source code form is that same
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### 2. Basic Permissions.
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All rights granted under this License are granted for the term of
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copyright on the Program, and are irrevocable provided the stated
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conditions are met. This License explicitly affirms your unlimited
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permission to run the unmodified Program. The output from running a
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covered work is covered by this License only if the output, given its
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content, constitutes a covered work. This License acknowledges your
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rights of fair use or other equivalent, as provided by copyright law.
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You may make, run and propagate covered works that you do not convey,
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without conditions so long as your license otherwise remains in force.
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You may convey covered works to others for the sole purpose of having
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them make modifications exclusively for you, or provide you with
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facilities for running those works, provided that you comply with the
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terms of this License in conveying all material for which you do not
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control copyright. Those thus making or running the covered works for
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you must do so exclusively on your behalf, under your direction and
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control, on terms that prohibit them from making any copies of your
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copyrighted material outside their relationship with you.
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Conveying under any other circumstances is permitted solely under the
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conditions stated below. Sublicensing is not allowed; section 10 makes
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### 3. Protecting Users' Legal Rights From Anti-Circumvention Law.
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No covered work shall be deemed part of an effective technological
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measure under any applicable law fulfilling obligations under article
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11 of the WIPO copyright treaty adopted on 20 December 1996, or
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similar laws prohibiting or restricting circumvention of such
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When you convey a covered work, you waive any legal power to forbid
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circumvention of technological measures to the extent such
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circumvention is effected by exercising rights under this License with
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respect to the covered work, and you disclaim any intention to limit
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operation or modification of the work as a means of enforcing, against
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the work's users, your or third parties' legal rights to forbid
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circumvention of technological measures.
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### 4. Conveying Verbatim Copies.
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You may convey verbatim copies of the Program's source code as you
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receive it, in any medium, provided that you conspicuously and
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appropriately publish on each copy an appropriate copyright notice;
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keep intact all notices stating that this License and any
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non-permissive terms added in accord with section 7 apply to the code;
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keep intact all notices of the absence of any warranty; and give all
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recipients a copy of this License along with the Program.
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You may charge any price or no price for each copy that you convey,
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and you may offer support or warranty protection for a fee.
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### 5. Conveying Modified Source Versions.
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You may convey a work based on the Program, or the modifications to
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produce it from the Program, in the form of source code under the
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terms of section 4, provided that you also meet all of these
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- a) The work must carry prominent notices stating that you modified
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it, and giving a relevant date.
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- b) The work must carry prominent notices stating that it is
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released under this License and any conditions added under
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section 7. This requirement modifies the requirement in section 4
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to "keep intact all notices".
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- c) You must license the entire work, as a whole, under this
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License to anyone who comes into possession of a copy. This
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License will therefore apply, along with any applicable section 7
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additional terms, to the whole of the work, and all its parts,
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regardless of how they are packaged. This License gives no
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permission to license the work in any other way, but it does not
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invalidate such permission if you have separately received it.
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- d) If the work has interactive user interfaces, each must display
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Appropriate Legal Notices; however, if the Program has interactive
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interfaces that do not display Appropriate Legal Notices, your
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work need not make them do so.
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A compilation of a covered work with other separate and independent
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works, which are not by their nature extensions of the covered work,
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and which are not combined with it such as to form a larger program,
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in or on a volume of a storage or distribution medium, is called an
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"aggregate" if the compilation and its resulting copyright are not
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used to limit the access or legal rights of the compilation's users
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beyond what the individual works permit. Inclusion of a covered work
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in an aggregate does not cause this License to apply to the other
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parts of the aggregate.
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### 6. Conveying Non-Source Forms.
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You may convey a covered work in object code form under the terms of
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sections 4 and 5, provided that you also convey the machine-readable
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Corresponding Source under the terms of this License, in one of these
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- a) Convey the object code in, or embodied in, a physical product
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(including a physical distribution medium), accompanied by the
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Corresponding Source fixed on a durable physical medium
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customarily used for software interchange.
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- b) Convey the object code in, or embodied in, a physical product
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(including a physical distribution medium), accompanied by a
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written offer, valid for at least three years and valid for as
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long as you offer spare parts or customer support for that product
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model, to give anyone who possesses the object code either (1) a
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copy of the Corresponding Source for all the software in the
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product that is covered by this License, on a durable physical
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medium customarily used for software interchange, for a price no
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more than your reasonable cost of physically performing this
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conveying of source, or (2) access to copy the Corresponding
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Source from a network server at no charge.
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- c) Convey individual copies of the object code with a copy of the
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written offer to provide the Corresponding Source. This
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alternative is allowed only occasionally and noncommercially, and
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only if you received the object code with such an offer, in accord
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with subsection 6b.
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- d) Convey the object code by offering access from a designated
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place (gratis or for a charge), and offer equivalent access to the
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Corresponding Source in the same way through the same place at no
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further charge. You need not require recipients to copy the
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Corresponding Source along with the object code. If the place to
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copy the object code is a network server, the Corresponding Source
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may be on a different server (operated by you or a third party)
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that supports equivalent copying facilities, provided you maintain
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clear directions next to the object code saying where to find the
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Corresponding Source. Regardless of what server hosts the
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Corresponding Source, you remain obligated to ensure that it is
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available for as long as needed to satisfy these requirements.
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- e) Convey the object code using peer-to-peer transmission,
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provided you inform other peers where the object code and
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Corresponding Source of the work are being offered to the general
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public at no charge under subsection 6d.
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A separable portion of the object code, whose source code is excluded
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from the Corresponding Source as a System Library, need not be
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included in conveying the object code work.
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A "User Product" is either (1) a "consumer product", which means any
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tangible personal property which is normally used for personal,
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family, or household purposes, or (2) anything designed or sold for
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incorporation into a dwelling. In determining whether a product is a
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consumer product, doubtful cases shall be resolved in favor of
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coverage. For a particular product received by a particular user,
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"normally used" refers to a typical or common use of that class of
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to use, the product. A product is a consumer product regardless of
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whether the product has substantial commercial, industrial or
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non-consumer uses, unless such uses represent the only significant
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mode of use of the product.
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"Installation Information" for a User Product means any methods,
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procedures, authorization keys, or other information required to
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install and execute modified versions of a covered work in that User
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Product from a modified version of its Corresponding Source. The
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information must suffice to ensure that the continued functioning of
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the modified object code is in no case prevented or interfered with
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solely because modification has been made.
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If you convey an object code work under this section in, or with, or
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specifically for use in, a User Product, and the conveying occurs as
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part of a transaction in which the right of possession and use of the
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User Product is transferred to the recipient in perpetuity or for a
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fixed term (regardless of how the transaction is characterized), the
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Corresponding Source conveyed under this section must be accompanied
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by the Installation Information. But this requirement does not apply
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if neither you nor any third party retains the ability to install
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modified object code on the User Product (for example, the work has
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been installed in ROM).
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The requirement to provide Installation Information does not include a
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requirement to continue to provide support service, warranty, or
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updates for a work that has been modified or installed by the
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recipient, or for the User Product in which it has been modified or
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installed. Access to a network may be denied when the modification
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itself materially and adversely affects the operation of the network
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or violates the rules and protocols for communication across the
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Corresponding Source conveyed, and Installation Information provided,
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in accord with this section must be in a format that is publicly
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documented (and with an implementation available to the public in
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source code form), and must require no special password or key for
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unpacking, reading or copying.
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### 7. Additional Terms.
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"Additional permissions" are terms that supplement the terms of this
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License by making exceptions from one or more of its conditions.
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Additional permissions that are applicable to the entire Program shall
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be treated as though they were included in this License, to the extent
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that they are valid under applicable law. If additional permissions
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apply only to part of the Program, that part may be used separately
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under those permissions, but the entire Program remains governed by
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this License without regard to the additional permissions.
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When you convey a copy of a covered work, you may at your option
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remove any additional permissions from that copy, or from any part of
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it. (Additional permissions may be written to require their own
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removal in certain cases when you modify the work.) You may place
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additional permissions on material, added by you to a covered work,
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for which you have or can give appropriate copyright permission.
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Notwithstanding any other provision of this License, for material you
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add to a covered work, you may (if authorized by the copyright holders
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of that material) supplement the terms of this License with terms:
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- a) Disclaiming warranty or limiting liability differently from the
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terms of sections 15 and 16 of this License; or
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- b) Requiring preservation of specified reasonable legal notices or
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author attributions in that material or in the Appropriate Legal
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Notices displayed by works containing it; or
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- c) Prohibiting misrepresentation of the origin of that material,
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or requiring that modified versions of such material be marked in
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reasonable ways as different from the original version; or
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- d) Limiting the use for publicity purposes of names of licensors
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or authors of the material; or
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- e) Declining to grant rights under trademark law for use of some
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trade names, trademarks, or service marks; or
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- f) Requiring indemnification of licensors and authors of that
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material by anyone who conveys the material (or modified versions
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of it) with contractual assumptions of liability to the recipient,
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for any liability that these contractual assumptions directly
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impose on those licensors and authors.
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All other non-permissive additional terms are considered "further
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restrictions" within the meaning of section 10. If the Program as you
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received it, or any part of it, contains a notice stating that it is
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governed by this License along with a term that is a further
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restriction, you may remove that term. If a license document contains
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a further restriction but permits relicensing or conveying under this
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License, you may add to a covered work material governed by the terms
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of that license document, provided that the further restriction does
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not survive such relicensing or conveying.
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If you add terms to a covered work in accord with this section, you
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must place, in the relevant source files, a statement of the
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additional terms that apply to those files, or a notice indicating
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where to find the applicable terms.
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Additional terms, permissive or non-permissive, may be stated in the
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form of a separately written license, or stated as exceptions; the
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above requirements apply either way.
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### 8. Termination.
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You may not propagate or modify a covered work except as expressly
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provided under this License. Any attempt otherwise to propagate or
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modify it is void, and will automatically terminate your rights under
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this License (including any patent licenses granted under the third
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paragraph of section 11).
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However, if you cease all violation of this License, then your license
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from a particular copyright holder is reinstated (a) provisionally,
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unless and until the copyright holder explicitly and finally
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terminates your license, and (b) permanently, if the copyright holder
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fails to notify you of the violation by some reasonable means prior to
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60 days after the cessation.
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Moreover, your license from a particular copyright holder is
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reinstated permanently if the copyright holder notifies you of the
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violation by some reasonable means, this is the first time you have
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received notice of violation of this License (for any work) from that
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copyright holder, and you cure the violation prior to 30 days after
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your receipt of the notice.
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Termination of your rights under this section does not terminate the
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licenses of parties who have received copies or rights from you under
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this License. If your rights have been terminated and not permanently
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reinstated, you do not qualify to receive new licenses for the same
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material under section 10.
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### 9. Acceptance Not Required for Having Copies.
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You are not required to accept this License in order to receive or run
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a copy of the Program. Ancillary propagation of a covered work
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occurring solely as a consequence of using peer-to-peer transmission
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to receive a copy likewise does not require acceptance. However,
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nothing other than this License grants you permission to propagate or
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modify any covered work. These actions infringe copyright if you do
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not accept this License. Therefore, by modifying or propagating a
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covered work, you indicate your acceptance of this License to do so.
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### 10. Automatic Licensing of Downstream Recipients.
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Each time you convey a covered work, the recipient automatically
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receives a license from the original licensors, to run, modify and
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propagate that work, subject to this License. You are not responsible
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for enforcing compliance by third parties with this License.
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An "entity transaction" is a transaction transferring control of an
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organization, or substantially all assets of one, or subdividing an
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organization, or merging organizations. If propagation of a covered
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work results from an entity transaction, each party to that
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transaction who receives a copy of the work also receives whatever
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licenses to the work the party's predecessor in interest had or could
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give under the previous paragraph, plus a right to possession of the
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Corresponding Source of the work from the predecessor in interest, if
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the predecessor has it or can get it with reasonable efforts.
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You may not impose any further restrictions on the exercise of the
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rights granted or affirmed under this License. For example, you may
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not impose a license fee, royalty, or other charge for exercise of
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rights granted under this License, and you may not initiate litigation
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(including a cross-claim or counterclaim in a lawsuit) alleging that
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any patent claim is infringed by making, using, selling, offering for
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sale, or importing the Program or any portion of it.
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A "contributor" is a copyright holder who authorizes use under this
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License of the Program or a work on which the Program is based. The
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work thus licensed is called the contributor's "contributor version".
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A contributor's "essential patent claims" are all patent claims owned
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or controlled by the contributor, whether already acquired or
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hereafter acquired, that would be infringed by some manner, permitted
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by this License, of making, using, or selling its contributor version,
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but do not include claims that would be infringed only as a
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consequence of further modification of the contributor version. For
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purposes of this definition, "control" includes the right to grant
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patent sublicenses in a manner consistent with the requirements of
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Each contributor grants you a non-exclusive, worldwide, royalty-free
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patent license under the contributor's essential patent claims, to
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make, use, sell, offer for sale, import and otherwise run, modify and
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propagate the contents of its contributor version.
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In the following three paragraphs, a "patent license" is any express
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agreement or commitment, however denominated, not to enforce a patent
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(such as an express permission to practice a patent or covenant not to
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sue for patent infringement). To "grant" such a patent license to a
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party means to make such an agreement or commitment not to enforce a
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patent against the party.
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If you convey a covered work, knowingly relying on a patent license,
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and the Corresponding Source of the work is not available for anyone
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to copy, free of charge and under the terms of this License, through a
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publicly available network server or other readily accessible means,
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then you must either (1) cause the Corresponding Source to be so
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available, or (2) arrange to deprive yourself of the benefit of the
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patent license for this particular work, or (3) arrange, in a manner
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consistent with the requirements of this License, to extend the patent
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license to downstream recipients. "Knowingly relying" means you have
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actual knowledge that, but for the patent license, your conveying the
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covered work in a country, or your recipient's use of the covered work
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in a country, would infringe one or more identifiable patents in that
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country that you have reason to believe are valid.
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+
If, pursuant to or in connection with a single transaction or
497
+
arrangement, you convey, or propagate by procuring conveyance of, a
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+
covered work, and grant a patent license to some of the parties
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+
receiving the covered work authorizing them to use, propagate, modify
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+
or convey a specific copy of the covered work, then the patent license
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+
you grant is automatically extended to all recipients of the covered
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+
work and works based on it.
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+
A patent license is "discriminatory" if it does not include within the
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+
scope of its coverage, prohibits the exercise of, or is conditioned on
506
+
the non-exercise of one or more of the rights that are specifically
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+
granted under this License. You may not convey a covered work if you
508
+
are a party to an arrangement with a third party that is in the
509
+
business of distributing software, under which you make payment to the
510
+
third party based on the extent of your activity of conveying the
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+
work, and under which the third party grants, to any of the parties
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+
who would receive the covered work from you, a discriminatory patent
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+
license (a) in connection with copies of the covered work conveyed by
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+
you (or copies made from those copies), or (b) primarily for and in
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+
connection with specific products or compilations that contain the
516
+
covered work, unless you entered into that arrangement, or that patent
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+
license was granted, prior to 28 March 2007.
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+
Nothing in this License shall be construed as excluding or limiting
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+
any implied license or other defenses to infringement that may
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+
otherwise be available to you under applicable patent law.
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+
### 12. No Surrender of Others' Freedom.
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+
If conditions are imposed on you (whether by court order, agreement or
526
+
otherwise) that contradict the conditions of this License, they do not
527
+
excuse you from the conditions of this License. If you cannot convey a
528
+
covered work so as to satisfy simultaneously your obligations under
529
+
this License and any other pertinent obligations, then as a
530
+
consequence you may not convey it at all. For example, if you agree to
531
+
terms that obligate you to collect a royalty for further conveying
532
+
from those to whom you convey the Program, the only way you could
533
+
satisfy both those terms and this License would be to refrain entirely
534
+
from conveying the Program.
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+
### 13. Remote Network Interaction; Use with the GNU General Public License.
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+
Notwithstanding any other provision of this License, if you modify the
539
+
Program, your modified version must prominently offer all users
540
+
interacting with it remotely through a computer network (if your
541
+
version supports such interaction) an opportunity to receive the
542
+
Corresponding Source of your version by providing access to the
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+
Corresponding Source from a network server at no charge, through some
544
+
standard or customary means of facilitating copying of software. This
545
+
Corresponding Source shall include the Corresponding Source for any
546
+
work covered by version 3 of the GNU General Public License that is
547
+
incorporated pursuant to the following paragraph.
549
+
Notwithstanding any other provision of this License, you have
550
+
permission to link or combine any covered work with a work licensed
551
+
under version 3 of the GNU General Public License into a single
552
+
combined work, and to convey the resulting work. The terms of this
553
+
License will continue to apply to the part which is the covered work,
554
+
but the work with which it is combined will remain governed by version
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+
3 of the GNU General Public License.
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+
### 14. Revised Versions of this License.
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+
The Free Software Foundation may publish revised and/or new versions
560
+
of the GNU Affero General Public License from time to time. Such new
561
+
versions will be similar in spirit to the present version, but may
562
+
differ in detail to address new problems or concerns.
564
+
Each version is given a distinguishing version number. If the Program
565
+
specifies that a certain numbered version of the GNU Affero General
566
+
Public License "or any later version" applies to it, you have the
567
+
option of following the terms and conditions either of that numbered
568
+
version or of any later version published by the Free Software
569
+
Foundation. If the Program does not specify a version number of the
570
+
GNU Affero General Public License, you may choose any version ever
571
+
published by the Free Software Foundation.
573
+
If the Program specifies that a proxy can decide which future versions
574
+
of the GNU Affero General Public License can be used, that proxy's
575
+
public statement of acceptance of a version permanently authorizes you
576
+
to choose that version for the Program.
578
+
Later license versions may give you additional or different
579
+
permissions. However, no additional obligations are imposed on any
580
+
author or copyright holder as a result of your choosing to follow a
583
+
### 15. Disclaimer of Warranty.
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+
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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+
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
587
+
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT
588
+
WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT
589
+
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
590
+
A PARTICULAR PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND
591
+
PERFORMANCE OF THE PROGRAM IS WITH YOU. SHOULD THE PROGRAM PROVE
592
+
DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING, REPAIR OR
595
+
### 16. Limitation of Liability.
597
+
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
598
+
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR
599
+
CONVEYS THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
600
+
INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES
601
+
ARISING OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT
602
+
NOT LIMITED TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR
603
+
LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM
604
+
TO OPERATE WITH ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER
605
+
PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
607
+
### 17. Interpretation of Sections 15 and 16.
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+
If the disclaimer of warranty and limitation of liability provided
610
+
above cannot be given local legal effect according to their terms,
611
+
reviewing courts shall apply local law that most closely approximates
612
+
an absolute waiver of all civil liability in connection with the
613
+
Program, unless a warranty or assumption of liability accompanies a
614
+
copy of the Program in return for a fee.
616
+
END OF TERMS AND CONDITIONS
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+
## How to Apply These Terms to Your New Programs
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+
If you develop a new program, and you want it to be of the greatest
621
+
possible use to the public, the best way to achieve this is to make it
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+
free software which everyone can redistribute and change under these
625
+
To do so, attach the following notices to the program. It is safest to
626
+
attach them to the start of each source file to most effectively state
627
+
the exclusion of warranty; and each file should have at least the
628
+
"copyright" line and a pointer to where the full notice is found.
630
+
<one line to give the program's name and a brief idea of what it does.>
631
+
Copyright (C) <year> <name of author>
633
+
This program is free software: you can redistribute it and/or modify
634
+
it under the terms of the GNU Affero General Public License as
635
+
published by the Free Software Foundation, either version 3 of the
636
+
License, or (at your option) any later version.
638
+
This program is distributed in the hope that it will be useful,
639
+
but WITHOUT ANY WARRANTY; without even the implied warranty of
640
+
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
641
+
GNU Affero General Public License for more details.
643
+
You should have received a copy of the GNU Affero General Public License
644
+
along with this program. If not, see <https://www.gnu.org/licenses/>.
646
+
Also add information on how to contact you by electronic and paper
649
+
If your software can interact with users remotely through a computer
650
+
network, you should also make sure that it provides a way for users to
651
+
get its source. For example, if your program is a web application, its
652
+
interface could display a "Source" link that leads users to an archive
653
+
of the code. There are many ways you could offer source, and different
654
+
solutions will be better for different programs; see section 13 for
655
+
the specific requirements.
657
+
You should also get your employer (if you work as a programmer) or
658
+
school, if any, to sign a "copyright disclaimer" for the program, if
659
+
necessary. For more information on this, and how to apply and follow
660
+
the GNU AGPL, see <https://www.gnu.org/licenses/>.
dunkirk.sh